Journals and Transactions

  1. Jian Pang, Zheng Li, Ryo Kubozoe, Xueting Luo, Rui Wu, Yun Wang, Dongwon You, Ashbir Aviat Fadila, Rattanan Saengchan, Takeshi Nakamura, Joshua Alvin, Daiki Matsumoto, Bangan Liu, Aravind Tharayil Narayanan, Junjun Qiu, Hanli Liu, Zheng Sun, Hongye Huang, Korkut Kaan Tokgoz, Keiichi Motoi, Naoki Oshima, Shinichi Hori, Kazuaki Kunihiro, Tomoya Kaneko, Atsushi Shirane, and Kenichi Okada,
    "A 28GHz CMOS Phased-Array Beamformer Utilizing Neutralized Bi-Directional Technique Supporting Dual-Polarized MIMO for 5G NR,"
    IEEE Journal of Solid-State Circuits (JSSC), 2020.
  2. Zheng Sun, Dingxin Xu, Hongye Huang, Zheng Li, Hanli Liu, Bangan Liu, Jian Pang, Teruki Someya, Atsushi Shirane, and Kenichi Okada,
    "A Compact TF-based LC-VCO with Ultra-Low-Power Operation and Supply Pushing Reduction for IoT Applications,"
    IEICE Transactions on Electronics, Vol. E103-C, 2020.
  3. Yun Wang, Rui Wu, Jian Pang, Dongwon You, Ashbir Aviat Fadila, Rattanan Saengchan, Xi Fu, Daiki Matsumoto, Takeshi Nakamura, Ryo Kubozoe, Masaru Kawabuchi, Bangan Liu, Haosheng Zhang, Junjun Qiu, Hanli Liu, Naoki Oshima, Keiichi Motoi, Shinichi Hori, Kazuaki Kunihiro, Tomoya Kaneko, Atsushi Shirane, and Kenichi Okada,
    "A 39-GHz 64-Element Phased-Array Transceiver with Built-in Phase and Amplitude Calibration for Large-Array 5G NR in 65-nm CMOS,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 55, No. 5, pp. 1249-1269, May 2020.
  4. Bangan Liu, Yuncheng Zhang, Junjun Qiu, Hongye Huang, Zheng Sun, Dingxin Xu, Haosheng Zhang, Yun Wang, Jian Pang, Zheng Li, Xi Fu, Atsushi Shirane, Hitoshi Kurosu, Yoshinori Nakane, Shunichiro Masaki, and Kenichi Okada,
    "A Fully-Synthesizable Fractional-N Injection-Locked PLL for Digital Clocking with Triangle/Sawtooth Spread-Spectrum Modulation Capability in 5-nm CMOS,"
    IEEE Solid-State Circuits Letters (SSC-L), Vol. 3, No. 1??, pp. 34-37, Jan. 2020.
  5. Jian Pang, Ryo Kubozoe, Zheng Li, Masaru Kawabuchi, Atsushi Shirane, and Kenichi Okada,
    "A 28-GHz CMOS Vector-Summing Phase Shifter Featuring I/Q Imbalance Calibration Supporting 11.2Gb/s in 256QAM for 5G New Radio,"
    IEICE Transactions on Electronics, Vol.E103-C, No.2, pp.39-47, Feb. 2020.
  6. Jian Pang, Korkut Kaan Tokgoz, Shotaro Maki, Zeng Li, Xueting Luo, Ibrahim Abdo, Seitarou Kawai, Hanli Liu, Zheng Sun, Bangan Liu, Makihiko Katsuragi, Kento Kimura, Atsushi Shirane, Kenichi Okada,
    " A 28.16-Gb/s Area-Efficient 60-GHz CMOS Bidirectional Transceiver for IEEE 802.11ay,"
    IEEE Transactions on Microwave Theory and Techniques, Vol. 68, No. 1, pp. 251-262, Jan. 2020.
  7. Hanli Liu, Zheng Sun, Hongye Huang, Wei Deng, Teerachot Siriburanon, Jian Pang, Yun Wang, Rui Wu, Teruki Someya, Atsushi Shirane, and Kenichi Okada,
    "A 265-µW Fractional-N Digital PLL with Seamless Automatic Switching Sub-sampling/Sampling Feedback Path and Duty-Cycled Frequency-Locked Loop in 65nm CMOS,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 54, No. 12, pp. 3478-3492, Dec. 2019.
  8. Haosheng Zhang, Herdian Hans, Aravind Tharayil Narayanan, Atsushi Shirane, Mitsuru Suzuki, Kazuhiro Harasaka, Kazuhiko Adachi, Shigeyoshi Goka, Shinya Yanagimachi, and Kenichi Okada,
    "ULPAC: A Miniaturized Ultralow-Power Atomic Clock,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 54, No. 11, pp. 3135-3148, Nov. 2019.
  9. Zule Xu, Anugerah Firdauzi, Masaya Miyahara, Kenichi Okada, and Akira Matsuzawa,
    "Type-I Digital Ring-Based PLL Using Loop Delay Compensation and ADC-Based Sampling Phase Detector,"
    IEICE Transactions on Electronics, Vol. E102-C, No. 7, pp.520-529, Jul. 2019.
  10. Aravind Tharayil Narayanan, and Kenichi Okada,
    "A Pulse-Tail-Feedback LC-VCO with 700Hz Flicker Noise Corner and -195dBc FoM,"
    IEICE Transactions on Electronics, Vol. E102-C, No. 7, pp.595-606, Jul. 2019.
  11. Korkut Kaan Tokgoz, Ibrahim Abdo, Takuya Fujimura, Jian Pang, Yoichi Kawano, Taisuke Iwai, Akifumi Kasamatsu, Issei Watanabe, and Kenichi Okada,
    "A 273-301-GHz Amplifier with 21-dB Peak Gain in 65-nm Standard Bulk CMOS,"
    IEEE Microwave and Wireless Components Letters, Vol. 29, No. 5, pp. 342-344, May 2019.
  12. Jian Pang, Rui Wu, Yun Wang, Masato Dome, Hisashi Kato, Hongye Huang, Aravind Tharayil Narayanan, Hanli Liu, Bangan Liu Takeshi Nakamura, Takuya Fujimura, Masaru Kawabuchi, Ryo Kubozoe, Tsuyoshi Miura, Daiki Matsumoto, Zheng Li, Naoki Oshima, Keiichi Motoi, Shinichi Hori, Kazuaki Kunihiro, Tomoya Kaneko, Atsushi Shirane, and Kenichi Okada,
    "A 28GHz CMOS Phased-Array Transceiver Based on LO Phase Shifting Architecture with Gain Invariant Phase Tuning for 5G New Radio,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 54, No. 5, pp. 1228-1242, May 2019.
  13. Yun Wang, Bangan Liu, Rui Wu, Hanli Liu, Aravind Tharayil Narayanan, Jian Pang, Ning Li, Toru Yoshioka, Yuki Terashima, Haosheng Zhang, Dexian Tang, Makihiko Katsuragi, Daeyoung Lee, Sungtae Choi, Kenichi Okada, and Akira Matsuzawa,
    "A 60-GHz 3.0Gb/s Spectrum Efficient BPOOK Transceiver for Low-power Short-range Wireless in 65-nm CMOS,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 54, No. 5, pp. 1363-1374, May 2019.
  14. Jian Pang, Shotaro Maki, Seitarou Kawai, Noriaki Nagashima, Yuuki Seo, Masato Dome, Hisashi Kato, Makihiko Katsuragi, Kento Kimura, Satoshi Kondo, Yuki Terashima, Hanli Liu, Teerachot Siriburanon, Aravind Tharayil Narayanan, Nurul Fajri, Tohru Kaneko, Toru Yoshioka, Bangan Liu, Yun Wang, Rui Wu, Ning Li, Korkut Kaan Tokgoz, Masaya Miyahara, Atsushi Shirane, and Kenichi Okada,
    "A 50.1Gb/s 60-GHz CMOS Transceiver for IEEE 802.11ay with Calibration of LO Feed-Through and I/Q Imbalance,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 54, No. 5, pp. 1375-1390, May 2019.
  15. Haosheng Zhang, Aravind Tharayil Narayanan, Hans Herdian, Bangan Liu, Rui Wu, Atsushi Shirane, and Kenichi Okada,
    "A Power-Efficient Pulse-VCO for Chip-Scale Atomic Clock,"
    IEICE Transactions on Electronics, Vol. E102-C, No. 4, pp. 276-286, Apr. 2019.
  16. Bangan Liu, Huy Cu Ngo, Kengo Nakata, Wei Deng, Yuncheng Zhang, Junjun Qiu, Toru Yoshioka, Jun Emmei, Jian Pang, Aravind Thyarail Narayanan, Haosheng Zhang, Dongsheng Yang, Hanli Liu, Teruki Someya, Atsushi Shirane, and Kenichi Okada,
    "A 0.4ps-Jitter -52dBc-Spur Synthesizable Injection-Locked PLL with Self-Clocked Non-overlap Update and Slope-Balanced Sub-Sampling BBPD,"
    IEEE Solid-State Circuits Letters (SSC-L), Vol. 2, No. 1, pp. 5-8, Jan. 2019.
  17. Hanli Liu, Dexian Tang, Zheng Sun, Wei Deng, Huy Cu Ngo, and Kenichi Okada,
    "A Sub-mW Fractional-N ADPLL with FOM of -246dB for IoT Applications,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 53, No. 12, pp. 3540-3552, Dec. 2018.
  18. Hanli Liu, Zheng Sun, Dexian Tang, Hongye Huang, Tohru Kaneko, Zhijie Chen, Wei Deng, Rui Wu and Kenichi Okada,
    "A DPLL-Centric Bluetooth Low-Energy Transceiver with a 2.3-mW Interference-Tolerant Hybrid-Loop Receiver in 65nm CMOS,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 53, No. 12, pp. 3672-3687, Dec. 2018.
  19. Korkut Kaan Tokgoz, Seitaro Kawai, Kenichi Okada, and Akira Matsuzawa,
    "Design of Low-Loss 60GHz Integrated Antenna Switch in 65nm CMOS,"
    IEICE Electronics Express, Vol. 15, No. 7 pp. 1-10, Mar. 2018.
  20. Hanli Liu, Teerachot Siriburanon, Kengo Nakata, Wei Deng, Ju Ho Son, Dae Young Lee, Kenichi Okada, and Akira Matsuzawa,
    "A 28-GHz Fractional-N Frequency Synthesizer with Reference and Frequency Doublers for 5G Mobile Communications in 65nm CMOS,"
    IEICE Transactions on Electronics, Vol. E101-C, 2018.
  21. Bangan Liu, Yun Wang, Jian Pang, Haosheng Zhang, Dongsheng Yang, Aravind Tharayil Narayanan, DaeYoung Lee, SungTae Choi, Rui Wu, Kenichi Okada, and Akira Matsuzawa,
    "A Low-Power Pulse-Shaped Duobinary ASK Modulator for IEEE 802.11ad Compliant 60GHz Transmitter in 65nm CMOS,"
    IEICE Transactions on Electronics, Vol. E101-C, No. 2, pp.126-134, Feb. 2018.
  22. Rui Wu, Ryo Minami, Yuuki Tsukui, Seitaro Kawai, Yuuki Seo, Shinji Sato, Kento Kimura, Satoshi Kondo, Tomohiro Ueno, Nurul Fajri, Shotarou Maki, Noriaki Nagashima, Yasuaki Takeuchi, Tatsuya Yamaguchi, Ahmed Musa, Korkut Kaan Tokgoz, Teerachot Siriburanon, Bangan Liu, Yun Wang, Jian Pang, Ning Li, Masaya Miyahara, Kenichi Okada, and Akira Matsuzawa,
    "64-QAM 60-GHz CMOS Transceivers for IEEE 802.11ad/ay,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 52, No. 11, pp. 2871-2891, Nov. 2017.
  23. Yun Wang, Makihiko Katsuragi, Kenichi Okada, and Akira Matsuzawa,
    "A 20-GHz Differential Push-Push VCO for 60-GHz Frequency Synthesizer toward 256QAM Wireless Transmission in 65-nm CMOS,"
    IEICE Transactions on Electronics, Vol. E100-C, No. 6, pp. 568-575, June 2017.
  24. Takuichi Hirano, Ning Li, Kenichi Okada,
    "Analysis of Effective Material Properties of Metal Dummy Fills in a CMOS Chip,"
    IEICE Transactions on Communications, Vol. E100-B, No. 5, pp. 793-798, May. 2017.
  25. Aravind Tharayil Narayanan, Wei Deng, Dongsheng Yang, Rui Wu, Kenichi Okada, and Akira Matsuzawa,
    "A Fully-Synthesizable 10.06Gbps 16.1mW Injection-Locked CDR in 28nm FDSOI,"
    IEICE Transactions on Electronics, Vol. E100-C, No. 3, pp. 259-267, March 2017.
  26. Takuichi Hirano, Ning Li, and Kenichi Okada,
    "Analysis of Effective Material Properties of Metal Dummy Fills in a CMOS Chip,"
    IEICE Transactions on Communications, Vol. E100-B, No. 5, pp.793-798, May 2017.
  27. Mitsutoshi Sugawara, Kenji Mori, Zule Xu, Masaya Miyahara, Kenichi Okada, and Akira Matsuzawa,
    "Synthesis and Automatic Layout of Resistive Digital-to-Analog Converter Based on Mixed-Signal Slice Cell,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E99-A, No. 12, pp. 2435-2443, Dec. 2016.
  28. Zule Xu, Masaya Miyahara, Kenichi Okada, Akira Matsuzawa,
    "A 3.6GHz Low-Noise Fractional-N Digital PLL Using SAR-ADC-Based TDC,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 51, No. 10, pp. 2345-2356, Oct. 2016.
  29. Aravind Tharayil Narayanan, Makihiko Katsuragi, Kento Kimura, Satoshi Kondo, Korkut Kaan Tokgoz, Kengo Nakata, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A Fractional-N Sub-Sampling PLL Using a Pipelined Phase-Interpolator with an FoM of -250dB,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 51, No. 7, pp. 1630-1640, July 2016.
  30. Teerachot Siriburanon, Satoshi Kondo, Kento Kimura, Tomohiro Ueno, Satoshi Kawashima, Tohru Kaneko, Wei Deng, Masaya Miyahara, Kenichi Okada, and Akira Matsuzawa,
    "A 2.2GHz -242dB-FOM 4.2mW ADC-PLL using Digital Sub-Sampling Architecture,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 51, No. 6, pp. 1385-1397, June 2016.
  31. Seitaro Kawai, Shinji Sato, Shotaro Maki, Korkut Kaan Tokgoz, Kenichi Okada, and Akira Matsuzawa,
    "Accurate Transistor Modeling by Three-parameter Pad Model for Millimeter-Wave CMOS Circuit Design,"
    IEEE Transactions on Microwave Theory and Techniques, Vol. 64, No. 6, pp. 1736-1744, June 2016.
  32. Dongsheng Yang, Tomohiro Ueno, Wei Deng, Kengo Nakata, Aravind Tharayil Narayanan, Rui Wu, Kenichi Okada, and Akira Matsuzawa,
    "A 0.0055mm2 480µW Synthesizable PLL using Stochastic TDC in 28nm FDSOI,"
    IEICE Transactions on Electronics, Vol. E99-C, No. 6, pp. 632-640, June 2016.
  33. Teerachot Siriburanon, Satoshi Kondo, Makihiko Katsuragi, Hanli Liu, Kento Kimura, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A Low-Power Low-Noise mm-Wave Sub-Sampling PLL Using Dual-Step-Mixing ILFD and Tail-Coupling Quadrature Injection-Locked Oscillator for IEEE802.11ad,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 51, No. 5, pp. 1246-1260, May 2016.
  34. Kento Kimura, Aravind Tharayil Narayanan, Kenichi Okada, and Akira Matsuzawa,
    "An AM-PM Noise Mitigation Technique in Class-C VCO,"
    IEICE Transactions on Electronics, Vol. E98-C, No. 12, pp. 1161-1170, Dec. 2015.
  35. Dongsheng Yang, Wei Deng, Aravind Tharayil Narayanan, Rui Wu, Bangan Liu, Kenichi Okada, and Akira Matsuzawa,
    "A Fully Synthesizable Injection-Locked PLL with Feedback Current Output DAC in 28nm FDSOI,"
    IEICE Electronics Express, Vol. 12, No. 15 pp. 1-11, Aug. 2015.
  36. Kenichi Okada,
    "Digitally Assisted Analog and RF Circuits,"(Invited Paper)
    IEICE Transactions on Electronics, Vol. E98-C, No. 6, pp. 461-470, June 2015.
  37. Teerachot Siriburanon, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A Constant-Current-Controlled Class-C Voltage-Controlled Oscillator using Self-Adjusting Replica Bias Circuit,"
    IEICE Transactions on Electronics, Vol. E98-C, No. 6, pp. 471-479, June 2015.
  38. Ning Li, Kenichi Okada, Takeshi Inoue, Takuichi Hirano, Qinghong Bu, Aravind Tharayil Narayanan, Teerachot Siriburanon, Hitoshi Sakane, and Akira Matsuzawa,
    "High-Q Inductors on Locally Semi-Insulated Si Substrate by Helium-3 Bombardment for RF CMOS Integrated Circuits,"
    IEEE Transactions on Electron Devices, Vol. 62, No. 4, pp. 1269-1275, Apr. 2015.
  39. Rui Wu, Wei Deng, Shinji Sato, Takuichi Hirano, Ning Li, Takeshi Inoue, Hitoshi Sakane, Kenichi Okada, and Akira Matsuzawa,
    "A 60-GHz CMOS Transmitter with Gain-Enhanced On-Chip Antenna for Short-Range Wireless Interconnections,"
    IEICE Transactions on Electronics, Vol. E98-C, No. 4, pp. 304-314, Apr. 2015.
  40. Korkut Kaan Tokgoz, Kimsrun Lim, Seitarou Kawai, Nurul Fajri, Kenichi Okada, and Akira Matsuzawa,
    "Characterization of Crossing Transmission Line Using Two-Port Measurements for Millimeter-Wave CMOS Circuit Design,"
    IEICE Transactions on Electronics, Vol. E98-C, No. 1, pp. 35-44, Jan. 2015.
  41. Wei Deng, Dongsheng Yang, Tomohiro Ueno, Teerachot Siriburanon, Satoshi Kondo, Kenichi Okada, and Akira Matsuzawa,
    "A Fully Synthesizable All-digital PLL with Interpolative Phase Coupled Oscillator, Current-Output DAC, and Fine-resolution Digital Varactor Using Gated Edge Injection Technique,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 50, No. 1, pp. 68-80, Jan. 2015.
  42. Wei Deng, Shoichi Hara, Ahmed Musa, Kenichi Okada, and Akira Matsuzawa,
    "A Compact and Low-Power Fractionally Injection-Locked Quadrature Frequency Synthesizer Using a Self-Synchronized Gating Injection Technique for Software-Defined Radios,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 49, No. 9, pp. 1984-1994, Sep. 2014.
  43. Ahmed Musa, Wei Deng, Teerachot Siriburanon, Masaya Miyahara, Kenichi Okada, and Akira Matsuzawa,
    "A Compact, Low Power and Low Jitter Dual-Loop Injection Locked PLL Using All-Digital PVT Calibration,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 49, No. 1, pp. 50-60, Jan. 2014.
    - Ranked #1, Top Accessed Journal of Solid-State Circuits, Jan. 2014
  44. Rui Wu, Yuuki Tsukui, Ryo Minami, Kenichi Okada, and Akira Matsuzawa,
    "A Variable-Supply-Voltage 60-GHz PA with Consideration of HCI Issues for TDD Operation,"
    IEICE Transactions on Electronics, Vol. E97-C, No. 8, pp. 803-812, Aug. 2014.
  45. Takuichi Hirano, Kenichi Okada, Jiro Hirokawa, and Makoto Ando,
    "Electromagnetic Simulation Modeling of Silicon Substrate for 60 GHz On-Chip Differential-Feed Dipole Antenna,"
    Applied Physics Letters, Vol. 103, No. 12, 122101, Sep. 2013.
  46. Wei Deng, Teerachot Siriburanon, Ahmed Musa, Kenichi Okada, and Akira Matsuzawa,
    "A Sub-harmonic Injection-locked Quadrature Frequency Synthesizer with Frequency Calibration Scheme for Millimeter-wave TDD Transceivers,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 48, No. 7, pp. 1710-1720, July 2013.
  47. Teerachot Siriburanon, Takahiro Sato, Ahmed Musa, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A 20GHz Push-Push Voltage-Controlled Oscillator Using Second-Harmonic Peaking Technique for a 60GHz Frequency Synthesizer,"
    IEICE Transactions on Electronics, Vol. E96-C, No. 6, pp. 804-812, June 2013.
  48. Ahmed Musa, Kenichi Okada, and Akira Matsuzawa,
    "A Study of Stability and Phase Noise of Tail Capacitive-Feedback VCOs,"
    IEICE Transactions on Electronics, Vol. E96-C, No. 4, pp. 577-585, Apr. 2013.
  49. Ahmed Musa, Kenichi Okada, and Akira Matsuzawa,
    "Progressive Mixing Technique to Widen the Locking Range of High Division-Ratio Injection-Locked Frequency Dividers,"
    IEEE Transactions on Microwave Theory and Techniques, Vol. 61, No. 3, pp. 1161-1173, March 2013.
  50. Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "Class-C VCO with Amplitude Feedback Loop for Robust Start-up and Enhanced Oscillation Swing,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 48, No. 2, pp. 429-440, Feb. 2013.
    - Ranked #3, Top Accessed Journal of Solid-State Circuits, Jan. 2013
  51. Kenichi Okada, Keitarou Kondou, Masaya Miyahara, Masashi Shinagawa, Hiroki Asada, Ryo Minami, Tatsuya Yamaguchi, Ahmed Musa, Yuuki Tsukui, Yasuo Asakura, Shinya Tamonoki, Hiroyuki Yamagishi, Yasufumi Hino, Takahiro Sato, Hironori Sakaguchi, Naoki Shimasaki, Toshihiko Ito, Yasuaki Takeuchi, Ning Li, Qinghong Bu, Rui Murakami, Keigo Bunsen, Kota Matsushita, Makoto Noda, and Akira Matsuzawa,
    "Full Four-Channel 6.3-Gb/s 60-GHz CMOS Transceiver With Low-Power Analog and Digital Baseband Circuitry,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 48, No. 1, pp. 46-65, Jan. 2013.
    - Ranked #1, Top Accessed Journal of Solid-State Circuits, Jan. 2013
    - Ranked #3, Top 100 Downloads of the whole IEEExplore site, Jan. 2013 backup
  52. Hamid Kiumarsi, Hiroyuki Ito, Kenichi Okada, Yusuke Uemichi, Yasuto Chiba, Noboru Ishihara, and Kazuya Masu,
    "A 60GHz 3-dB Tandem Coupler Using Offset Broadside-Coupled Lines on a Silicon Substrate,"
    IEICE Electronics Express, Vol. 10, No. 2, pp. 1-12, Jan. 2013.
  53. Toshihiko Ito, Masaki Kanemaru, Satoshi Furuya, Dong Ta Ngoc Huy, Kenichi Okada, and Akira Matsuzawa,
    "Inter-Stage Tunable Notch Filter for a Multi-band WCDMA Receiver,"
    IEICE Transactions on Electronics, Vol. E95-C, No.11, pp. 1776-1782, Nov. 2012.
  54. Toshihiko Ito, Kenichi Okada, and Akira Matsuzawa,
    "A Wideband Common-Gate Low-Noise Amplifier Using Capacitive Feedback,"
    IEICE Transactions on Electronics, Vol. E95-C, No. 10, pp. 1666-1674, Oct. 2012.
  55. Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A 0.5-V, 0.05-to-3.2GHz LC-based Clock Generator for Substituting Ring Oscillators under Low-voltage Condition,"
    IEICE Transactions on Electronics, Vol. E95-C, No. 7, pp. 1285-1296, July 2012.
  56. Qing-Hong Bu, Ning Li, Kenichi Okada, and Akira Matsuzawa,
    "Evaluation of L-2L De-embedding Method Considering Misalignment of Contact Position for Millimeter-wave CMOS Circuit Design,"
    IEICE Transactions on Electronics, Vol. E95-C, No. 5, pp. 942-948, May 2012.
  57. JeeYoung Hong, Daisuke Imanishi, Kenichi Okada, and Akira Matsuzawa,
    "Two-Stage Band-Selectable CMOS Power Amplifiers Using Inter-Stage Frequency Tuning,"
    IEICE Transactions on Electronics, Vol. E95-C, No. 2, pp. 290-296, Feb. 2012.
  58. Kenichi Okada, You Nomiyama, Rui Murakami, and Akira Matsuzawa,
    "A Dual-conduction Class-C VCO for a Low Supply Voltage,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E95-A, No. 2, pp. 506-514, Feb. 2012.
  59. Ning Li, Keigo Bunsen, Naoki Takayama, Qinghong Bu, Toshihide Suzuki, Masaru Sato, Yoichi Kawano, Tatsuya Hirose, Kenichi Okada, and Akira Matsuzawa,
    "A 24dB Gain 51-68GHz Common Source Low Noise Amplifier Using Asymmetric-Layout Transistors,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E95-A, No. 2, pp. 498-505, Feb. 2012.
  60. Ning Li, Kota Matsushita, Naoki Takayama, Shogo Ito, Kenichi Okada, and Akira Matsuzawa,
    "Topology and Design Considerations of 60 GHz CMOS LNAs for Noise Performance Improving,"
    IEICE Transactions on Electronics, Vol. E94-C, No. 12, pp. 1881-1888, Dec. 2011.
  61. Kenichi Okada, Ning Li, Kota Matsushita, Keigo Bunsen, Rui Murakami, Ahmed Musa, Takahiro Sato, Hiroki Asada, Naoki Takayama, Shogo Ito, Win Chaivipas, Ryo Minami, Tatsuya Yamaguchi, Yasuaki Takeuchi, Hiroyuki Yamagishi, Makoto Noda, and Akira Matsuzawa,
    "A 60-GHz 16QAM/8PSK/QPSK/BPSK Direct-Conversion Transceiver for IEEE802.15.3c,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 46, No. 12, pp. 2988-3004, Dec. 2011.
  62. Ahmed Musa, Rui Murakami, Takahiro Sato, Win Chaivipas, Kenichi Okada, and Akira Matsuzawa,
    "A Low Phase Noise Quadrature Injection Locked Frequency Synthesizer for MM-Wave Applications,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 46, No. 11, pp. 2635-2649, Nov. 2011.
  63. JeeYoung Hong, Daisuke Imanishi, Kenichi Okada, and Akira Matsuzawa,
    "Tunable CMOS Power Amplifiers for Reconfigurable Transceivers,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E94-A No. 11, pp.2394-2401, Nov. 2011.
  64. Yusaku Ito, Kenichi Okada, and Kazuya Masu,
    "A Tunable Wideband LC-Based VCO for Reconfigurable Radio Transceivers,"
    Hindawi Journal of Electrical and Computer Engineering, Vol. 2011, pp.1-7, Aug. 2011.
  65. Ning Li, Kota Matsushita, Kenichi Okada, and Akira Matsuzawa,
    "A 14.3% PAE Parallel Class-A and AB 60GHz CMOS PA,"
    IEICE Electronics Express, Vol. 8, No. 13, pp.1071-1074, July 2011.
  66. Ryo Minami, JeeYoung Hong, Kenichi Okada, and Akira Matsuzawa,
    "Measurement of Integrated PA-to-LNA Isolation on Si CMOS Chip,"
    IEICE Transactions on Electronics, Vol. E94-C, No. 6, pp.1057-1060, June 2011.
  67. Yuya Ono, Takuichi Hirano, Kenichi Okada, Jiro Hirokawa, and Makoto Ando,
    "Eigenmode Analysis of Propagation Constant for a Microstrip Line with Dummy Metals on a Si CMOS Substrate,"
    IEICE Transactions on Electronics, Vol. E94-C, No. 6, pp.1008-1015, June 2011.
  68. Rui Murakami, Toshihiko Ito, Kenichi Okada, and Akira Matsuzawa,
    "An Ultra-Compact LC-VCO Using a Stacked-Spiral Inductor,"
    IEICE Electronics Express, Vol.8, No.7, pp.512-517, April 2011.
  69. Shouhei Kousai, Daisuke Miyashita, Junji Wadatsumi, Rui Ito, Takahiro, Sekiguchi, Mototsugu Hamada, and Kenichi Okada,
    "A Low-Noise and Highly-Linear Transmitter with Envelope Injection Pre-Power Amplifier for Multi-mode Radio,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E94-A, No. 2, pp.592-602, Feb. 2011.
  70. Kenichi Okada, and Akira Matsuzawa,
    "A Perspective of Reconfigurable RF Circuits,"(Invited Paper)
    Telecommunications Review, Vol. 20, No. 5, pp.782-790, Oct. 2010.
  71. Shoichi Hara, Kenichi Okada, and Akira Matsuzawa,
    "A Wide-Tunable LC-based Voltage-Controlled Oscillator Using a Divide-by-N Injection-Locked Frequency Divider,"
    IEICE Transactions on Electronics, Vol. E93-C, No. 6, pp.763-769, June 2010.
  72. Rui Murakami, Shoichi Hara, Kenichi Okada, and Akira Matsuzawa,
    "Analysis of Phase Noise Degradation Considering Switch Transistor Capacitances for CMOS Voltage Controlled Oscillators,"
    IEICE Transactions on Electronics, Vol. E93-C, No. 6, pp.777-784, June 2010.
  73. Naoki Takayama, Kota Matsushita, Shogo Ito, Ning Li, Keigo Bunsen, Kenichi Okada, and Akira Matsuzawa,
    "A De-Embedding Method Using Different-Length Transmission Lines for mm-Wave CMOS Device Modeling,"
    IEICE Transactions on Electronics, Vol. E93-C, No. 6, pp.812-819, June 2010.
  74. Shoichi Hara, Rui Murakami, Kenichi Okada, and Akira Matsuzawa,
    "The Optimum Design Methodology of Low-Phase-Noise LC-VCO Using Multiple-Divide Technique,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E93-A, No. 2, pp.424-430, Feb. 2010.
  75. Ning Li, Kota Matsushita, Naoki Takayama, Shogo Ito, Kenichi Okada, and Akira Matsuzawa,
    "Evaluation of a Multi-Line De-embedding Technique up to 110 GHz for Millimeter-Wave CMOS Circuit Design,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E93-A, No. 2, pp.431-439, Feb. 2010.
  76. Takeshi Ito, Kenichi Okada, and Kazuya Masu,
    "Characterization of On-Chip Multi-Port Inductors for Small-Area RF Circuits,"
    IEEE Transactions on Circuits and Systems I, Vol. 56, No. 8, pp. 1590-1597, Aug. 2009.
  77. Hirotaka Sugawara, Kenichi Okada, and Kazuya Masu,
    "Tunable CMOS LNA Using a Variable Inductor for a Reconfigurable RF Circuit,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E92-A, No. 2, pp.401-410, Feb. 2009.
  78. Hiroyuki Ito, Makoto Kimura, Kazuya Miyashita, Takahiro Ishii, Kenichi Okada, and Kazuya Masu,
    "A Bidirectional- and Multi-Drop-Transmission-Line Interconnect for Multipoint-to-Multipoint On-Chip Communications,"
    IEEE Journal of Solid-State Circuits (JSSC), Vol. 43, No. 4, pp.1020-1029, April 2008.
  79. Ning Li, Win Chaivipas, Kenichi Okada, and Akira Matsuzawa,
    "Analysis of CMOS Transconductance Amplifiers for Sampling Mixers,"
    IEICE Transactions on Electronics, Vol. E91-C, No. 6, pp.871-878, June 2008.
  80. Win Chaivipas, Kenichi Okada, and Akira Matsuzawa,
    "Spatial Sensitivity of Capacitors in Distributed Resonators and Its Application to Fine and Wide Frequency Tuning Digital Controlled Oscillators,"
    IEICE Transactions on Electronics, Vol. E91-C, No. 6, pp.918-927, June 2008.
  81. Tackya Yammouch, Kenichi Okada, and Kazuya Masu,
    "Physical Modeling of MEMS Variable Inductor,"
    IEEE Transactions on Circuits and Systems II, Vol. 55, No. 5, pp.419-422, May 2008.
  82. Kazuya Masu, and Kenichi Okada,
    "Reconfigurable RF CMOS Circuit for Cognitive Radio,"(Invited Paper)
    IEICE Transactions on Communications, Vol. E91-B, No. 1, pp.10-13, Jan. 2008.
  83. Kazuma Ohashi, Tackya Yammouch, Makoto Kimura, Hiroyuki Ito, Kenichi Okada, Kazuhisa Itoi, Masakazu Sato, Tatsuya Ito, Ryozo Yamauchi, and Kazuya Masu,
    "On-Chip Yagi-Uda Antenna for Horizontal Wireless Signal Transmission in Stacked Multi Chip Packaging,"
    Japanese Journal of Applied Physics, Vol.46, No.4B, pp.2283-2286, April 2007.
  84. Hiroyuki Ito, Hideyuki Sugita, Kenichi Okada, Tatsuya Ito, Kazuhisa Itoi, Masakazu Sato, Ryozo Yamauchi, and Kazuya Masu,
    "Low-Loss Distributed Constant Passive Devices Using Wafer-Level Chip Scale Package Technology,"
    IEICE Transactions on Electronics, Vol. E90-C, No.3, pp. 641-643, March 2007.
  85. Takumi Uezono, Kenichi Okada, and Kazuya Masu,
    "Statistical Modeling of a Via Distribution for Yield Estimation,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E89-A, No. 12, pp.3579-3584, Dec. 2006.
  86. Kenichi Okada, Hirotaka Sugawara, Hiroyuki Ito, Kazuhisa Itoi, Masakazu Sato, Hiroshi Abe, Tatsuya Ito, and Kazuya Masu,
    "On-Chip High-Q Variable Inductor Using Wafer-Level Chip-Scale Package Technology,"
    IEEE Transactions on Electron Devices, Vol. 53, No. 9, pp. 2401-2406, Sep. 2006.
  87. Tackya Yammouch, Hirotaka Sugawara, Kenichi Okada, and Kazuya Masu,
    "Improvement of Variable Ratio of On-Chip Variable Inductors Using Side Shield,"
    Japanese Journal of Applied Physics, Vol. 45, No. 7, pp.5720-5723, July 2006.
  88. Kazuya Masu, Kenichi Okada, and Hiroyuki Ito,
    "RF Passive Components Using Metal Line on Si CMOS,"(Invited Paper)
    IEICE Transactions on Electronics, Vol. E89-C, No. 6, pp. 681-691, June 2006.
  89. Kenichi Okada, Yoshiaki Yoshihara, Hirotaka Sugawara, and Kazuya Masu,
    "Design of Reconfigurable RF CMOS Wireless Circuit,"
    IEICE Transactions on Electronics, Vol. J89-C, No. 7, pp. 499-507, July 2006 (in Japanese).
  90. Makoto Kimura, Hiroyuki Ito, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "Zero-Crosstalk Bus Line Structure for Global Interconnects in Si ULSI,"
    Japanese Journal of Applied Physics, Vol. 45, No. 6A, pp.4977-4981, June 2006.
  91. Takanori Kyogoku, Junpei Inoue, Hidenari Nakashima, Takumi Uezono, Kenichi Okada, and Kazuya Masu,
    "Optimization Methodology of Layer Numbers with Circuit/Process Co-Design,"
    Japanese Journal of Applied Physics, Vol. 45, No. 4A, pp. 2476-2480, April 2006.
  92. Hidenari Nakashima, Junpei Inoue, Kenichi Okada, and Kazuya Masu,
    "Circuit Performance Prediction Considering Core Utilization with Interconnect Length Distribution Model,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E88-A, No. 12, pp. 3358-3366, Dec. 2005.
  93. Hidenari Nakashima, Naohiro Takagi, Junpei Inoue, Kenichi Okada, and Kazuya Masu,
    "Evaluation of X Architecture Using Interconnect Length Distribution,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E88-A, No. 12, pp. 3437-3444, Dec. 2005.
  94. Takanori Kyogoku, Junpei Inoue, Hidenari Nakashima, Takumi Uezono, Kenichi Okada, and Kazuya Masu,
    "Wire Length Distribution Model for System LSI,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E88-A, No. 12, pp. 3445-3452, Dec. 2005.
  95. Tomohiro Yamada, Takumi Uezono, Kenichi Okada, Kazuya Masu, Akio Oki, and Yasuhiro Horiike,
    "RF Attenuation Characteristics for In Vivo Wireless Healthcare Chip,"
    Japanese Journal of Applied Physics, Vol. 44, No. 7A, pp. 5275-5277, 2005.
  96. Hirotaka Sugawara, Kenichi Okada and Kazuya Masu,
    "Small-Area Inductor for Silicon CMOS Chips,"
    Japanese Journal of Applied Physics, Vol. 44, No. 4B, pp. 2766-2769, 2005.
  97. Hiroyuki Ito, Shinichiro Gomi, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "Twisted Differential Transmission Line Structure for Global Interconnect in Si LSI,"
    Japanese Journal of Applied Physics, Vol. 44, No. 4B, pp. 2774-2779, 2005.
  98. Tomohiro Yamada, Takumi Uezono, Kenichi Okada, Kazuya Masu, Akio Oki, and Yasuhiro Horiike,
    "In Vivo Batteryless Wireless Communication System for Bio-MEMS Sensors,"
    Japanese Journal of Applied Physics, Vol. 44, No. 4B, pp.2879-2882, 2005.
  99. Yoshiaki Yoshihara, Hirotaka Sugawara, Hiroyuki Ito, Kenichi Okada, and Kazuya Masu,
    "Wide Tuning Range LC-VCO Using Variable Inductor For Reconfigurable RF Circuit,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E88-A, No. 2, pp. 507-512, Feb. 2005.
  100. Kenichi Okada, and Hidetoshi Onodera,
    "Statistical Parameter Extraction for Intra- and Inter-chip Variabilities of Metal-Oxide-Semiconductor Field-Effect Transistor Characteristics,"
    Japanese Journal of Applied Physics, Vol. 44, No. 1A, pp. 131-134, 2005.
  101. Yoshiaki Yoshihara, Hirotaka Sugawara, Hiroyuki Ito, Kenichi Okada, and Kazuya Masu,
    "Inductance-Tuned LC-VCO for Reconfigurable RF Circuit Design,"
    IEICE Electronics Express, Vol.1, No.7, pp.156-159, July 2004.
  102. Kenichi Okada, Hiroaki Hoshino, and Hidetoshi Onodera,
    "Design Optimization Methodology of On-Chip Spiral Inductors,"
    IEICE Transactions on Electronics, Vol. E87-C, No. 6, pp. 933-941, June 2004.
  103. Hiroyuki Ito, Kohichi Nakamura, Kenichi Okada and Kazuya Masu,
    "High Density Differential Transmission Line Structure on Si USLI,"
    IEICE Transactions on Electronics, Vol. E87-C, No. 6, pp. 942-948, June 2004.
  104. Hirotaka Sugawara, Yoshisato Yokoyama, Shinichiro Gomi, Hiroyuki Ito, Kenichi Okada, Hiroaki Hoshino, Hidetoshi Onodera, and Kazuya Masu,
    "Variable RF Inductor on Si CMOS Chip,"
    Japanese Journal of Applied Physics, Vol. 43, No. 4B, pp.2293-2296, 2004.
  105. Kenichi Okada, Kento Yamaoka, and Hidetoshi Onodera,
    "Statistical Gate-delay Modeling with Intra-gate Variability,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E86-A, No. 12, pp.2914-2922, Dec. 2003.
  106. Kenichi Okada and Hidetoshi Onodera,
    "Realistic Delay Calculation Based on Measured Intra-chip and Inter-chip Variabilities with the Size Dependence,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E86-A, No. 4, pp.746-751, April 2003.
  107. Kenichi Okada and Hidetoshi Onodera,
    "Statistical Modeling of Device Characteristics with Systematic Variability,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E84-A, No. 2, pp.529-536, February 2001.
  108. Kenichi Okada, Hidetoshi Onodera and Keikichi Tamaru,
    "Layout Dependent Matching Analysis of CMOS Circuits,"
    International Journal of Analog Integrated Circuits And Signal Processing, Kluwer Academic Publishers, Vol. 25, No. 3, pp. 309-318, December 2000.
  109. Kenichi Okada, Hidetoshi Onodera and Keikichi Tamaru,
    "Layout Dependent Matching Analysis of CMOS Circuits,"
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E82-A, No. 2, pp.348-355, February 1999.

International Conference

  1. Jian Pang, Zheng Li, Xueting Luo, Joshua Alvin, Rattanan Saengchan, Ashbir Aviat Fadila, Kiyoshi Yanagisawa, Yi Zhang, Zixin Chen, Zhongliang Huang, Xiaofan Gu, Rui Wu, Yun Wang, Dongwon You, Bangan Liu, Yuncheng Zhang, Zheng Sun, Hongye Huang, Naoki Oshima, Keiichi Motoi, Shinichi Hori, Kazuaki Kunihiro, Tomoya Kaneko, Atsushi Shirane, and Kenichi Okada,
    "A 28-GHz CMOS Phased-Array Beamformer Supporting Dual-Polarized MIMO with Cross-Polarization Leakage Cancellation,"
    IEEE Symposium on VLSI Circuits (VLSI Circuits), Honolulu, HI, June 2020.
  2. Yuncheng Zhang, Bangan Liu, Xiaofan Gu, Chun Wang, Kiyoshi Yanagisawa, Junjun Qiu, Yun Wang, Jian Pang, Atsushi Shirane, and Kenichi Okada,
    "A 29% PAE 1.5bit-DSM-Based Polar Transmitter with Spur-Mitigated Injection-Locked PLL,"
    IEEE Symposium on VLSI Circuits (VLSI Circuits), Honolulu, HI, June 2020.
  3. Yun Wang, Dongwon You, Xi fu, Takeshi Nakamura, Ashbir Aviat Fadila, Teruki Someya, Atsuhiro Kawaguchi, Jian Pang, Kiyoshi Yanagisawa, Bangan Liu, Yuncheng Zhang, Haosheng Zhang, Rui Wu, Atsushi Shirane, Shunichiro Masaki, Daisuke Yamazaki, and Kenichi Okada,
    "A CMOS Ka-Band SATCOM Transceiver with ACI-Cancellation Enhanced Dual-Channel Low-NF High-Dynamic-Range RX and High-Linearity TX,"
    IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Los Angeles, CA, June 2020.
  4. Kenichi Okada,
    "Millimeter-Wave CMOS Phased-Array Transceiver Supporting Dual-Polarized MIMO for 5G NR,"(invited)
    IEEE MTT-S International Microwave Symposium (IMS), Los Angeles, CA, June 2020.
  5. Ibrahim Abdo, Takuya Fujimura, Tsuyoshi Miura, Korkut Kaan Tokgoz, Hiroshi Hamada, Hideyuki Nosaka, Atsushi Shirane, and Kenichi Okada,
    "A 300GHz Wireless Transceiver in 65nm CMOS for IEEE802.15.3d Using Push-Push Subharmonic Mixer,
    IEEE MTT-S International Microwave Symposium (IMS), Los Angeles, CA, June 2020.
  6. Xi Fu, Yun Wang, Zheng Li, Atsushi Shirane, and Kenichi Okada,
    "A 68-dB Isolation 1.0-dB Loss Compact CMOS SPDT RF Switch Utilizing Switched Resonance Network,"
    IEEE MTT-S International Microwave Symposium (IMS), Los Angeles, CA, June 2020.
  7. Kenichi Okada, and Jian Pang,
    "Millimeter-Wave CMOS Phased-Array Transceiver Supporting Dual-Polarized MIMO for 5G NR,"(invited)
    IEEE Custom Integrated Circuits Conference (CICC), Boston, MA, Mar. 2020.
  8. Yuncheng Zhang, Bangan Liu, Atsushi Shirane, and Kenichi Okada,
    IEEE International Solid-State Circuits Conference (ISSCC) Student Research Preview, San Francisco, CA, Feb. 2020.
  9. Zheng Li, Jian Pang, Atsushi Shirane, and Kenichi Okada,
    IEEE International Solid-State Circuits Conference (ISSCC) Student Research Preview, San Francisco, CA, Feb. 2020.
  10. Zheng Li, Jian Pang, Ryo Kubozoe, Xueting Luo, Rui Wu, Yun Wang, Donwang You, Ashbir Aviat Fadila, Joshua Alvin, Bangan Liu, Zheng Sun, Hongye Huang, Atsushi Shirane, and Kenichi Okada,
    "A 28GHz CMOS Differential Bi-Directional Amplifier for 5G NR,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Beijing, China, Jan. 2020.
  11. Hiroshi Hamada, Takuya Tsutsumi, Hiroki Sugiyama, Hideaki Matsuzaki, Ho-Jin Song, Go Itami, Takuya Fujimura, Ibrahim Abdo, Kenichi Okada, and Hideyuki Nosaka,
    "Millimeter-wave InP Device Technologies for Ultra-high Speed Wireless Communications toward Beyond 5G,"(invited)
    IEEE International Electron Devices Meeting (IEDM), San Francisco, CA, Dec. 2019.
  12. Kenichi Okada,
    "A 28GHz CMOS Phased-Array Transceiver for 5G New Radio,"(invited)
    IEEE Asia-Pacific Microwave Conference (APMC), Singapore, Dec. 2019.
  13. Kenichi Okada,
    "Millimeter-Wave Phased-Array Transceiver Using CMOS Technology,"(invited)
    IEEE Asia-Pacific Microwave Conference (APMC), Singapore, Dec. 2019.
  14. Hans Herdian, Haosheng Zhang, Aravind Tharayil Narayanan, Atsushi Shirane, and Kenichi Okada,
    "10GHz Varactor-less VCO with Helium-3 Ion Irradiated Inductor,"
    IEEE Asia-Pacific Microwave Conference (APMC), Singapore, Dec. 2019.
  15. Kenichi Okada,
    "Millimeter-Wave Phased-Array Transceiver Design for 5G New Radio,"(Keynote, invited)
    IEEE Asia Pacific Conference on Circuits and Systems (APCCAS), Bangkok, Thailand, Nov. 2019.
  16. Yuji Yano, Seiya Yoshida, Shintaro Izumi, Hiroshi Kawaguchi, Tetsuya Hirose, Masaya Miyahara, Teruki Someya, Kenichi Okada, Ippei Akita, Yoshihiko Kurui, Hideyuki Tomizawa, and Masahiko Yoshimoto,
    "An IoT Sensor Node SoC with Dynamic Power Scheduling in Energy Harvesting Environment,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), Macau, China, Nov. 2019.
  17. Kenichi Okada,
    "Millimeter-Wave CMOS Phased-Array Transceiver Toward 1Tbps Wireless Communication,"(invited)
    IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS), Nashville, TN, Nov. 2019.
  18. Hiroshi Hamada, Takuya Tsutsumi, Go Itami, Hiroki Sugiyama, Hideaki Matsuzaki, Kenichi Okada, and Hideyuki Nosaka
    "300-GHz 120-Gb/s Wireless Transceiver with High-Output-Power and High-Gain Power Amplifier Based on 80-nm InP-HEMT Technology,"
    IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS), Nashville, TN, Nov. 2019.
  19. Takuichi Hirano, Ning Li, and Kenichi Okada
    "Electromagnetic Simulation of On-Chip RF Components in GHz and Millimetre-Wave Bands,"
    IEEJ Smart City Symposium, Chennai, India, Oct. 2019.
  20. Kenichi Okada,
    "Millimeter-Wave CMOS Phased-Array Transceiver for 5G New Radio,"(invited)
    IEEE MTT-S European Microwave Conference (EuMC), Paris, France, Sep. 2019.
  21. Kenichi Okada,
    "Ultra-Low-Power DTC-Based Fractional-N Digital PLL Techniques,"(invited)
    IEEE European Solid-State Circuits Conference (ESSCIRC), Cracow, Poland, Sep. 2019.
  22. Zheng Sun, Hanli Liu, Dingxin Xu, Hongye Huang, Bangan Liu, Zheng Li, Jian Pang, Teruki Someya, Atsushi Shirane, and Kenichi Okada,
    "A 78fs RMS Jitter Injection-Locked Clock Multiplier Using Transformer-Based Ultra-Low-Power VCO,"
    IEEE European Solid-State Circuits Conference (ESSCIRC), Cracow, Poland, Sep. 2019.
  23. Takuichi Hirano, Ning Li, Kenichi Okada, Takeshi Inoue, and Masatsugu Sogabe,
    "Electromagnetic Simulation of CMOS On-Chip Spiral Inductors in 5 GHz band,"
    IEEE International Symposium on Antennas and Propagation, Atlanta, GA, July 2019.
  24. Haosheng Zhang, Aravind Tharayil Narayanan, Hans Herdian, Bangan Liu, Yun Wang, Atsushi Shirane, and Kenichi Okada,
    "0.2mW 70fsrms-Jitter Injection-Locked PLL Using De-Sensitized SSPD-Based Injecting-Time Self-Alignment Achieving -270dB FoM and -66dBc Reference Spur,"
    IEEE Symposium on VLSI Circuits (VLSI Circuits), Kyoto, Japan, June 2019.
  25. Kenichi Okada,
    "100Gb/s Wireless Link: How do we Get There and What are the Future Applications?,"(invited)
    IEEE MTT-S International Microwave Symposium (IMS), Boston, MA, June 2019.
  26. Kenichi Okada,
    "Silicon Based Transceivers for High Data Rate mm-Wave Communications Targeting Beyond 5G Spectrum,"(invited)
    IEEE MTT-S International Microwave Symposium (IMS), Boston, MA, June 2019.
  27. Tomoya Kaneko, Noriaki Tawa, Shinichi Hori, and Kenichi Okada,
    "Digital Active Antenna Systems for 5G and Beyond mm-Wave Massive-MIMO Systems,"(invited)
    IEEE MTT-S International Microwave Symposium (IMS), Boston, MA, June 2019.
  28. Kenichi Okada,
    "Millimeter-wave CMOS Phased-Array Transceiver for 5G New Radio,"(invited)
    IEEE MTT-S International Microwave Symposium (IMS), Boston, MA, June 2019.
  29. Yun Wang, Rui Wu, Jian Pang, Dongwon You, Ashbir Aviat Fadila, Rattanan Saengchan, Xi Fu, Daiki Matsumoto, Takeshi Nakamura, Ryo Kubozoe, Masaru Kawabuchi, Bangan Liu, Haosheng Zhang, Junjun Qiu, Hanli Liu, Naoki Oshima, Keiichi Motoi, Shinichi Hori, Kazuaki Kunihiro, Tomoya Kaneko, Atsushi Shirane, and Kenichi Okada,
    "A 39GHz Phased-Array CMOS Transceiver with Built-in Calibration for Large-Array 5G NR,"
    IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Boston, MA, June 2019.
  30. Ibrahim Abdo, Takuya Fujimura, Tsuyoshi Miura, Atsushi Shirane, and Kenichi Okada,
    "A 300GHz Dielectric Lens Antenna,"
    IEEE Global Symposium on Millimeter Waves (GSMM), Sendai, Japan, pp. 17-19, May 2019.
  31. Korkut Kaan Tokgoz, and Kenichi Okada,
    "Millimeter-Wave CMOS Transceiver Toward 1Tbps Wireless Communication,"(invited)
    IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, May 2019.
  32. Kenichi Okada,
    "Millimeter-Wave Phased-Array Transceiver Design for 5G New Radio,"(Keynote, invited)
    IEEE Wireless Communications and Networking Conference, workshop, Marrakech, Morocco, Apr. 2019.
  33. Bangan Liu, Yuncheng Zhang, Junjun Qiu, Wei Deng, Zule Xu, Haosheng Zhang, Jian Pang, Yun Wang, Rui Wu, Teruki Someya, Atsushi Shirane, and Kenichi Okada,
    "An HDL-described Fully-synthesizable Sub-GHz IoT Transceiver with Ring Oscillator Based Frequency Synthesizer and Digital Background EVM Calibration,"
    IEEE Custom Integrated Circuits Conference (CICC), Austin, TX, Apr. 2019.
  34. Hanli Liu, Zheng Sun, Hongye Huang, Wei Deng, Teerachot Siriburanon, Jian Pang, Yun Wang, Rui Wu, Teruki Someya, Atsushi Shirane, and Kenichi Okada,
    "A 265-µW Fractional-N Digital PLL with Seamless Automatic Switching Subsampling/Sampling Feedback Path and Duty-Cycled Frequency-Locked Loop in 65nm CMOS,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 256-257, Feb. 2019.
  35. Jian Pang, Zheng Li, Ryo Kubozoe, Xueting Luo, Rui Wu, Yun Wang, Dongwon You, Ashbir Aviat Fadila, Rattanan Saengchan, Takeshi Nakamura, Joshua Alvin, Daiki Matsumoto, Aravind Tharayil Narayanan, Bangan Liu, Hanli Liu, Zheng Sun, Hongye Huang, Korkut Kaan Tokgoz, Naoki Oshima, Keiichi Motoi, Shinichi Hori, Kazuaki Kunihiro, Tomoya Kaneko, Atsushi Shirane, and Kenichi Okada,
    "A 28GHz CMOS Phased-Array Beamformer Utilizing Neutralized Bi-Directional Technique Supporting Dual-Polarized MIMO for 5G NR,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 344-345, Feb. 2019.
  36. Haosheng Zhang, Hans Herdian, Aravind Tharayil Narayanan, Atsushi Shirane, Mitsuru Suzuki, Kazuhiro Harasaka, Kazuhiko Adachi, Shinya Yanagimachi, and Kenichi Okada,
    "Ultra-Low-Power Atomic Clock for Satellite Constellation with 2.2x10-12 Long-Term Allan Deviation Using Cesium Coherent Population Trapping,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 462-463, Feb. 2019.
  37. Bangan Liu, Yuncheng Zhang, Junjun Qiu, Wei Deng, Zule Xu, Haosheng Zhang, Jian Pang, Yun Wang, Rui Wu, Teruki Someya, Atsushi Shirane, and Kenichi Okada,
    IEEE International Solid-State Circuits Conference (ISSCC) Student Research Preview, San Francisco, CA, pp. 512-513, Feb. 2019.
  38. Yun Wang, Rui Wu, Jian Pang, Dongwon You, Ashbir Aviat Fadila, Rattanan Saengchan, Xi Fu, Daiki Matsumoto, Takeshi Nakamura, Ryo Kubozoe, Masaru Kawabuchi, Bangan Liu, Haosheng Zhang, Junjun Qiu, Wei Deng, Hanli Liu, Naoki Oshima, Keiichi Motoi, Shinichi Hori, Kazuaki Kunihiro, Tomoya Kaneko, Atsushi Shirane, Kenichi Okada,
    IEEE International Solid-State Circuits Conference (ISSCC) Student Research Preview, San Francisco, CA, pp. 512-513, Feb. 2019.
  39. Jiro Hirokawa, Yuta Saito, Takashi Tomura, and Kenichi Okada,
    "Radiation of a Semi-rigid Cable Monopole Inserting into an Oscillator Chip in the 60GHz-band,"(invited)
    IEEE International Workshop on Antenna Technology (iWAT), Miami, FL, March 2019.
  40. Kenichi Okada,
    "A 28GHz CMOS Phased-Array Transceiver Using LO Phase Shifter for 5G New Radio,"(invited)
    IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA), Beijing, China, Nov. 2018.
  41. Kenichi Okada,
    "Millimeter-wave CMOS Transceiver Toward 1Tbps Wireless Communication,"(invited)
    IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA), Beijing, China, Nov. 2018.
  42. Kenichi Okada,
    "Millimeter-wave CMOS Transceiver Toward 1Tbps Wireless Communication,"(invited)
    IEEE Asia-Pacific Microwave Conference (APMC), Kyoto, Japan, Nov. 2018.
  43. Kenichi Okada, and Rui Wu,
    "A 28GHz CMOS Phased-Array Transceiver for 5G New Radio,"(invited)
    IEEE Asia-Pacific Microwave Conference (APMC), Kyoto, Japan, Nov. 2018.
  44. Haosheng Zhang, Hans Herdian, Aravind Tharayil Narayanan, Bangan Liu, Rui Wu, Atsushi Shirane, and Kenichi Okada,
    "A -194 dBc/Hz FoM VCO with Low-Supply Sensitivity for Ultra-Low-Power Atomic Clock,"
    IEEE Asia-Pacific Microwave Conference (APMC), Kyoto, Japan, Nov. 2018.
  45. Tomoya Kaneko, Kenichi Okada,
    "GaN and Si applications to 5G mm-Wave Massive-MIMO base-stations,"(invited)
    IEEE Asia-Pacific Microwave Conference (APMC), Kyoto, Japan, Nov. 2018.
  46. Jian Pang, Korkut Kaan Tokgoz, Shotaro Maki, Zheng Li, Xueting Luo, Ibrahim Abdo, Seitarou Kawai, Hanli Liu, Bangan Liu, Makihiko Katsuragi, Kento Kimura, Atsushi Shirane, Kenichi Okada,
    "A 28.16-Gb/s Area-Efficient 60GHz CMOS Bi-Directional Transceiver for IEEE 802.11ay,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), Tainan, Taiwan, pp. 77-78, Nov. 2018.
  47. Jian Pang, Ryo Kubozoe, Zheng Li, Masaru Kawabuchi, and Kenichi Okada,
    "28GHz CMOS Phase Shifter Supporting 11.2Gb/s in 256QAM with an RMS Gain Error of 0.13dB for 5G Mobile Network,"
    IEEE MTT-S European Microwave Conference (EuMC), Madrid, Spain, Sep. 2018.
  48. Zheng Sun, Hanli Liu, Dexian Tang, Hongye Huang, Tohru Kaneko, Rui Wu, Wei Deng, and Kenichi Okada,
    "A 0.85mm2 BLE Transceiver with Embedded T/R Switch, 2.6mW Fully-Passive Harmonic Suppressed Transmitter and 2.3mW Hybrid-Loop Receiver,"
    IEEE European Solid-State Circuits Conference (ESSCIRC), Dresden, Germany, pp. 310-313, Sep. 2018.
  49. Yun Wang, Rui Wu and Kenichi Okada,
    "A Compact 39-GHz 17.2-dBm Power Amplifier for 5G Communication in 65-nm CMOS,"
    IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), Melbourne, Australia, Aug. 2018.
  50. Kenichi Okada,
    "Millimeter-wave CMOS Transceiver Toward 1Tbps Wireless Communication,"(invited)
    Progress In Electromagnetics Research Symposium (PIERS), Toyama, Japan, Aug. 2018.
  51. Hiroshi Hamada, Takuya Fujimura, Ibrahim Abdo, Kenichi Okada, Takuya Tsutsumi, Ho-Jin Song, Hiroki Sugiyama, Hideaki Matsuzaki, and Hideyuki Nosaka,
    "300-GHz 100-Gb/s Wireless Transceiver Based on InP-HEMT MMICs,"(invited)
    Progress In Electromagnetics Research Symposium, Toyama, Japan, Aug. 2018.
  52. Nanae Kanai, Kennichi Okada, and Yasuyuki Miyamoto,
    "Investigation of Active Load Matching Using GaN HEMT as Digital Switch,"
    Asia-Pacific Workshop on Fundamentals and Applications of Advanced Semiconductor Devices (AWAD), Fukuoka, Japan, July 2018.
  53. Masaya Miyahara, Yukiya Endo, Kenichi Okada, and Akira Matsuzawa,
    "A 64µs Start-Up 26/40MHz Crystal Oscillator with Negative Resistance Boosting Technique Using Reconfigurable Multi-Stage Amplifier,"
    IEEE Symposium on VLSI Circuits (VLSI Circuits), Honolulu, HI, pp. 115-116, June 2018.
  54. Jian Pang, Rui Wu, Yun Wang, Masato Dome, Hisashi Kato, Hongye Huang, Aravind Tharayil Narayanan, Hanli Liu, Wei Deng, Bangan Liu, Takeshi Nakamura, Takuya Fujimura, Masaru Kawabuchi, Ryo Kubozoe, Tsuyoshi Miura, Daiki Matsumoto, Naoki Oshima, Keiichi Motoi, Shinichi Hori, Kazuaki Kunihiro, Tomoya Kaneko, and Kenichi Okada,
    "A 28GHz CMOS Phased-Array Transceiver Using Gain-Invariant LO Phase Shifter with 0.1 Degree Beam-Steering Resolution for 5G New Radio,"
    IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Philadelphia, PA, pp. 56-59, June 2018.
  55. Hiroshi Hamada, Takuya Fujimura, Ibrahim Abdo, Kenichi Okada, Ho-jin Song, Hiroki Sugiyama, Hideaki Matsuzaki, and Hideyuki Nosaka,
    "300-GHz, 100-Gb/s InP-HEMT Wireless Transceiver Using a 300-GHz Fundamental Mixer,"
    IEEE MTT-S International Microwave Symposium (IMS), Philadelphia, PA, pp. 1480-1483, June 2018.
  56. Kenichi Okada,
    "28GHz CMOS Phased-Array Transceiver for 5G New Radio,"(invited)
    IEEE MTT-S International Microwave Symposium (IMS), Philadelphia, PA, June 2018.
  57. Kenichi Okada,
    "Millimeter-wave CMOS Transceiver Toward 1Tbps Wireless Communication,"(invited)
    IEEE MTT-S International Microwave Symposium (IMS), Philadelphia, PA, June 2018.
  58. Kenichi Okada,
    "High-Performance CMOS Frequency Synthesizer for WLAN Applications,"(invited)
    IEEE MTT-S International Microwave Symposium (IMS), Philadelphia, PA, June 2018.
  59. Bangan Liu, Huy Cu Ngo, Kengo Nakata, Wei Deng, Yuncheng Zhang, Junjun Qiu, Toru Yoshioka, Jun Emmei, Haosheng Zhang, Jian Pang, Aravind Tharayil Narayanan, Dongsheng Yang, Hanli Liu, Kenichi Okada, and Akira Matsuzawa,
    "A 1.2 ps-Jitter Fully-Synthesizable Fully-Calibrated Fractional-N Injection-Locked PLL Using True Arbitrary Nonlinearity Calibration Technique,"
    IEEE Custom Integrated Circuits Conference (CICC), San Diego, CA, Apr. 2018.
  60. Korkut Kaan Tokgoz, Shotaro Maki, Jian Pang, Noriaki Nagashima, Ibrahim Abdo, Seitaro Kawai, Takuya Fujimura, Yoichi Kawano, Toshihide Suzuki, Taisuke Iwai, Kenichi Okada, and Akira Matsuzawa,
    "A 120Gb/s 16QAM CMOS Millimeter-Wave Wireless Transceiver,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 168-169, Feb. 2018.
  61. Hanli Liu, Dexian Tang, Zheng Sun, Wei Deng, Huy Cu Ngo, Kenichi Okada, and Akira Matsuzawa,
    "A 0.98mW Fractional-N ADPLL Using 10b Isolated Constant-Slope DTC with FoM of -246dB for IoT Applications in 65nm CMOS,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 246-247, Feb. 2018.
  62. Hanli Liu, Zheng Sun, Dexian Tang, Hongye Huang, Tohru Kaneko, Wei Deng, Rui Wu, Kenichi Okada, and Akira Matsuzawa,
    "An ADPLL-Centric Bluetooth Low-Energy Transceiver with 2.3mW Interference-Tolerant Hybrid-Loop Receiver and 2.9mW Single-Point Polar Transmitter in 65nm CMOS,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 444-445, Feb. 2018.
  63. Bangan Liu, Huy Cu Ngo, Kenichi Okada and Akira Matsuzawa,
    IEEE International Solid-State Circuits Conference (ISSCC) Student Research Preview, San Francisco, CA, p. 522, Feb. 2018.
  64. Haosheng Zhang, Aravind Tharayil Narayanan, Bangan Liu, Kenichi Okada, and Akira Matsuzawa,
    "A Pulse VCO With Tail-filter,"
    IEEE Asia-Pacific Microwave Conference (APMC), Kuala Lumpur, Malaysia, Nov. 2017.
  65. Takuichi Hirano, Ning Li, Takeshi Inoue, Takahide Tagi, Kenichi Okada, and Akira Matsuzawa,
    "Gain Measurement of 60GHz CMOS On-Chip Dipole Antenna By Proton Irradiation," International Symposium on Antennas and Propagation (ISAP), Phuket, Thailand, Oct. 2017.
  66. Rui Wu, Ryo Minami, Yuuki Tsukui, Seitaro Kawai, Yuuki Seo, Shinji Sato, Kento Kimura, Satoshi Kondo, Tomohiro Ueno, Nurul Fajri, Shoutarou Maki, Noriaki Nagashima, Yasuaki Takeuchi, Tatsuya Yamaguchi, Ahmed Musa, Korkut Kaan Tokgoz, Teerachot Siriburanon, Bangan Liu, Yun Wang, Jian Pang, Ning Li, Masaya Miyahara, Kenichi Okada, and Akira Matsuzawa,
    "Ultra-High-Data-Rate 60-GHz CMOS Transceiver for Future Radio Access Network,"(invited)
    IEEE International Conference on ASIC (ASICON), Guiyang, China, Oct. 2017.
  67. Korkut Kaan Tokgoz, Seitaro Kawai, Kenichi Okada, and Akira Matsuzawa,
    "A Low-Loss 60GHz Integrated Antenna Switch in 65nm CMOS,"
    IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), pp. 50-52, Seoul, Korea, Aug. 2017. (Student Paper Finalist)
  68. Ibrahim Abdo, Korkut Kaan Tokgoz, Takuya Fujimura, Kenichi Okada, and Akira Matsuzawa,
    "Comparison Between L-2L and Thru-Reflect-Line De-embedding Methods for W-Band CMOS Amplifier Design,"
    IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), pp. 34-36, Seoul, Korea, Aug. 2017.
  69. Ibrahim Abdo, Korkut Kaan Tokgoz, Takuya Fujimura, Kenichi Okada, and Akira Matsuzawa,
    "A 100-123GHz CMOS Frequency Doubler with 5.5dBm Output Power and High Fundamental Rejection,"
    IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), pp. 138-140, Seoul, Korea, Aug. 2017. (Best Student Paper Award)
  70. Aravind Tharayil Narayanan, Ning Li, Kenichi Okada, and Akira Matsuzawa,
    "A Pulse-Tail-Feedback VCO Achieving FoM of 195dBc/Hz with Flicker Noise Corner of 700Hz,"
    IEEE Symposium on VLSI Circuits (VLSI Circuits), Kyoto, Japan, pp. 124-125, June 2017.
  71. Yun Wang, Bangan Liu, Hanli Liu, Aravind Tharayil Narayanan, Jian Pang, Ning Li, Toru Yoshioka, Yuki Terashima, Haosheng Zhang, Dexian Tang, Makihiko Katsuragi, Daeyoung Lee, Sungtae Choi, Rui Wu, Kenichi Okada, and Akira Matsuzawa,
    "A 100mW 3.0Gb/s Spectrum Efficient 60GHz Bi-Phase OOK CMOS Transceiver,"
    IEEE Symposium on VLSI Circuits (VLSI Circuits), Kyoto, Japan, pp. 298-299, June 2017.
  72. Kenichi Okada,
    "Millimeter-wave Transceiver System Design for 5G Mobile Network,"(invited)
    IEEE MTT-S International Microwave Symposium (IMS), Honolulu, HI, June 2017.
  73. Kenichi Okada,
    "Low-cost CMOS mm-wave Front-ends for 5G Wireless Terminals,"(invited)
    IEEE MTT-S International Microwave Symposium (IMS), Honolulu, HI, June 2017.
  74. Kenichi Okada,
    "Synthesizable Digital PLL Using Injection-Lock Architecture,"(invited)
    CMOS Emerging Technologies, Warsaw, Poland, May 2017.
  75. Huy Cu Ngo, Kengo Nakata, Toru Yoshioka, Yuki Terashima, Kenichi Okada, and Akira Matsuzawa,
    "A 0.42ps-Jitter -241.7dB-FOM Synthesizable Injection-Locked PLL with Noise-Isolation LDO,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 150-151, Feb. 2017.
  76. Jian Pang, Shotaro Maki, Seitarou Kawai, Noriaki Nagashima, Yuuki Seo, Masato Dome, Hisashi Kato, Makihiko Katsuragi, Kento Kimura, Satoshi Kondo, Yuki Terashima, Hanli Liu, Teerachot Siriburanon, Aravind Tharayil Narayanan, Nurul Fajri, Tohru Kaneko, Toru Yoshioka, Bangan Liu, Yun Wang, Rui Wu, Ning Li, Korkut Kaan Tokgoz, Masaya Miyahara, Kenichi Okada, and Akira Matsuzawa,
    "A 128-QAM 60GHz CMOS Transceiver for IEEE802.11ay with Calibration of LO Feedthrough and I/Q Imbalance,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 424-425, Feb. 2017.
  77. Kenichi Okada,
    "Synthesizable PLL Using Digital Standard Cell Library,"(invited)
    IEEE International Solid-State Circuits Conference (ISSCC) Forum, San Francisco, CA, pp.503-505, Feb. 2017.
  78. Korkut Kaan Tokgoz, Jian Pang, Shotaro Maki, Kenichi Okada, and Akira Matsuzawa,
    IEEE International Solid-State Circuits Conference (ISSCC) Student Research Preview, San Francisco, CA, p. 520, Feb. 2017.
  79. Kenichi Okada,
    "Quick Start Guide of Digital PLL for Digital Designers,"(invited)
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Tutorial, Chiba, Japan, Jan. 2017.
  80. Korkut Kaan Tokgoz, Shotaro Maki, Seitaro Kawai, Noriaki Nagashima, Yoichi Kawano, Toshihide Suzuki, Taisuke Iwai, Kenichi Okada, and Akira Matsuzawa,
    "W-Band Ultra-High Data-Rate 65nm CMOS Wireless Transceiver,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Chiba, Japan, pp. 5-6, Jan. 2017.
  81. Dongsheng Yang, Wei Deng, Bangan Liu, Aravind Tharayil Narayanan, Teerachot Siriburanon, Kenichi Okada, and Akira Matsuzawa,
    "An HDL-Synthesized Injection-Locked PLL Using LC-Based DCO for On-chip Clock Generation,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Chiba, Japan, pp. 13-14, Jan. 2017.
  82. Rui Wu, Jian Pang, Yuuki Seo, Kento Kimura, Seitaro Kawai, Shinji Sato, Satoshi Kondo, Tomohiro Ueno, Nurul Fajri, Yasuaki Takeuchi, Tatsuya Yamaguchi, Ahmed Musa, Masaya Miyahara, Kenichi Okada, Akira Matsuzawa,
    "An LO-Buffer-Less 60-GHz CMOS Transmitter with Oscillator Pulling Mitigation,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), Toyama, Japan, pp. 109-112, Nov. 2016.
  83. Dongsheng Yang, Wei Deng, Yuki Terashima, Teerachot Siriburanon, Aravind Tharayil Narayanan, Toru Yoshioka, Kenichi Okada, and Akira Matsuzawa,
    "An LC-VCO based Synthesizable Injection-Locked PLL with an FoM of -250.3dB,"
    IEEE European Solid-State Circuits Conference (ESSCIRC), Lausanne, Switzerland, pp. 197-200, Sep. 2016.
  84. Zule Xu, Anugerah Firdauzi, Masaya Miyahara, Kenichi Okada, and Akira Matsuzawa,
    "A 2GHz 3.1mW Type-I Digital Ring-Based PLL,"
    IEEE European Solid-State Circuits Conference (ESSCIRC), Lausanne, Switzerland, pp. 205-208, Sep. 2016.
  85. Kenichi Okada,
    "Millimeter-wave CMOS Transceiver for 60-GHz Wi-Fi, 5G Cellular and Future,"(Keynote, invited)
    International Conference on Analog VLSI Circuits, Boston, MA, Aug. 2016.
  86. Hanli Liu, Ning Li, Aravind Tharayil Narayanan, Teerachot Siriburanon, Takeshi Inoue, Hitoshi Sakane, Takuichi Hirano, Kenichi Okada, and Akira Matsuzawa,
    "A -194.0dBc/Hz FoM CMOS Tail-Filtering VCO Using Helium-3 Ion Irradiation Technique,"
    IEEE MTT-S European Microwave Conference (EuMC), London, United Kingdom, pp. 213-216, Oct. 2016.
  87. Kenichi Okada,
    "Millimeter-Wave CMOS Transceivers Toward More Than 1Tbps,"(invited)
    CMOS Emerging Technologies, Montreal, Canada, May 2016.
  88. Kenichi Okada,
    "CMOS MM-wave Transceivers Towards 5G Cellular,"(invited)
    IEEE MTT-S International Microwave Symposium (IMS), San Francisco, CA, May 2016.
  89. Korkut Kaan Tokgoz, Shotaro Maki, Seitaro Kawai, Noriaki Nagashima, Jun Emmei, Masato Dome, Hisashi Kato, Jian Pang, Yoichi Kawano, Toshihide Suzuki, Taisuke Iwai, Yuuki Seo, Kimsrun Lim, Shinji Sato, Ning Li, Kengo Nakata, Kenichi Okada, and Akira Matsuzawa,
    "A 56Gb/s W-Band CMOS Wireless Transceiver,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 242-243, Feb. 2016.
  90. Rui Wu, Seitaro Kawai, Yuuki Seo, Nurul Fajri, Kento Kimura, Shinji Sato, Satoshi Kondo, Tomohiro Ueno, Teerachot Siriburanon, Shotarou Maki, Bangan Liu, Yun Wang, Noriaki Nagashima, Masaya Miyahara, Kenichi Okada, and Akira Matsuzawa,
    "A 42Gb/s 60GHz CMOS Transceiver for IEEE802.11ay,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 248-249, Feb. 2016.
  91. Shotaro Maki, Yuuki Seo, Kenichi Okada, and Akira Matsuzawa,
    IEEE International Solid-State Circuits Conference (ISSCC) Student Research Preview, San Francisco, CA, Feb. 2016.
  92. Aravind Tharayil Narayanan, Makihiko Katsuragi, Kengo Nakata, Yuki Terashima, Kenichi Okada, and Akira Matsuzawa,
    "A Noise Reduction Technique for Divider-Less Fractional-N Frequency Synthesizer using Phase-Interpolation Technique,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Macau, China, Jan. 2016.
  93. Dongsheng Yang, Wei Deng, Aravind Tharayil Narayanan, Kengo Nakata, Teerachot Siriburanon, and Kenichi Okada, Akira Matsuzawa,
    "An Automatic Place-and-Routed Two-Stage Fractional-N Injection-locked PLL Using Soft Injection,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Macau, China, Jan. 2016.
  94. Takuichi Hirano, Ning Li, Kenichi Okada, Akira Matsuzawa, Jiro Hirokawa, Makoto Ando, Takeshi Inoue, and Hitoshi Sakane,
    "Design of 60 GHz CMOS on-Chip Dipole Antenna with 50 % Radiation Efficiency by Helium-3 Ion Irradiation,"
    IEEE International Conference on Antenna Measurements and Applications, Chiang Mai, Thailand, Dec. 2015.
  95. Kenichi Okada,
    "A 28-Gb/s 60-GHz Wireless Transceiver in 65nm CMOS with 64QAM Capability,"(invited)
    IEEE International Conference on ASIC (ASICON), Chengdu, China, Nov. 2015.
  96. Teerachot Siriburanon, Liu Hanli, Kengo Nakata, Wei Deng, Ju Ho Son, Dae Young Lee, Kenichi Okada, and Akira Matsuzawa,
    "A 28-GHz Fractional-N Frequency Synthesizer with Reference and Frequency Doublers for 5G Cellular,"
    IEEE European Solid-State Circuits Conference (ESSCIRC), Graz, Austria, pp. 76-79, Sep. 2015.
  97. Aravind Tharayil Narayanan, Makihiko Katsuragi, Kento Kimura, Satoshi Kondo, Korkut Kaan Tokgoz, Yuki Terashima, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A Fractional-N Sub-Sampling PLL using a Pipelined Phase-Interpolator with an FoM of -246dB,"
    IEEE European Solid-State Circuits Conference (ESSCIRC), Graz, Austria, pp. 380-383, Sep. 2015.
  98. Ning Li, Takeshi Inoue, Takuichi Hirano, Jian Pang, Rui Wu, Kenichi Okada, Hitoshi Sakane, and Akira Matsuzawa,
    "Substrate Noise Isolation Improvement by Helium-3 Irradiation Technique in a Triple-well CMOS Process,"
    IEEE European Solid-State Device Research Conference (ESSDERC), Graz, Austria, pp. 254-257, Sep. 2015.
  99. Kenichi Okada,
    "A 60GHz CMOS Transceiver Considering HCI Reliability,"(invited)
    IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), Sendai, Japan, pp. 22-24, Aug. 2015.
  100. Korkut Kaan Tokgoz, Shotarou Maki, Kenichi Okada, and Akira Matsuzawa,
    "Characterization of Cross-Line up to 110 GHz Using Two-Port Measurements,"
    IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), Sendai, Japan, pp. 97-99, Aug. 2015.
  101. Kenichi Okada,
    "Synthesizable Digital PLL Using Injection-Lock Architecture,"(invited)
    IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Phoenix, AZ, May 2015.
  102. Wei Deng, Dongsheng Yang, Aravind Tharayil Narayanan, Kengo Nakata, Teerachot Siriburanon, Kenichi Okada, and Akira Matsuzawa,
    "A 0.048-mm2 3-mW Synthesizable Fractional-N PLL with a Soft Injection-Locking Technique,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 252-253, Feb. 2015.
  103. Rui Wu, Seitaro Kawai, Yuuki Seo, Kento Kimura, Shinji Sato, Satoshi Kondo, Tomohiro Ueno, Nurul Fajri, Shotarou Maki, Noriaki Nagashima, Yasuaki Takeuchi, Tatsuya Yamaguchi, Ahmed Musa, Masaya Miyahara, Kenichi Okada, and Akira Matsuzawa,
    "An HCI-Healing 60GHz CMOS Transceiver,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 350-351, Feb. 2015.
  104. Teerachot Siriburanon, Satoshi Kondo, Kento Kimura, Tomohiro Ueno, Satoshi Kawashima, Tohru Kaneko, Wei Deng, Masaya Miyahara, Kenichi Okada, and Akira Matsuzawa,
    "A 2.2-GHz -242dB-FoM 4.2-mW ADC-PLL Using Digital Sub-Sampling Architecture,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 440-441, Feb. 2015.
  105. Dongsheng Yang, Wei Deng, Tomohiro Ueno, Teerachot Siriburanon, Satoshi Kondo, Kenichi Okada, and Akira Matsuzawa,
    "An HDL-Synthesized Gated-Edge-Injection PLL with A Current Output DAC,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Chiba, Japan, Jan. 2015.
  106. Teerachot Siriburanon, Tomohiro Ueno, Kento Kimura, Satoshi Kondo, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A 58.3-to-65.4GHz 34.2mW Sub-Harmonically Injection-Locked PLL with a Sub-Sampling Phase Detection,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Chiba, Japan, Jan. 2015.
  107. Aravind Tharayil Narayanan, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A Tail-Current Modulated VCO with Adaptive-Bias Scheme,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Chiba, Japan, Jan. 2015.
  108. Seitaro Kawai, Korkut Kaan Tokgoz, Kenichi Okada, and Akira Matsuzawa,
    "L-2L De-embedding Method with Double-T-type PAD Model for Millimeter-wave Amplifier Design,"
    IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), San Diego, CA, Jan. 2015.
  109. Kento Kimura, Kenichi Okada, and Akira Matsuzawa,
    "A 20GHz Class-C VCO Using Noise Sensitivity Mitigation Technique,"
    IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), San Diego, CA, Jan. 2015.
  110. Korkut Kaan Tokgoz, Kimsrun Lim, Yuuki Seo, Seitarou Kawai, Kenichi Okada, and Akira Matsuzawa,
    "Cross-Line Characterization for Capacitive Cross Coupling in Differential Millimeter-Wave CMOS Amplifiers,"
    IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), San Diego, CA, Jan. 2015.
  111. Kenichi Okada,
    "28Gbps Millimeter-Wave CMOS Transceiver,"(invited)
    IEICE Thailand-Japan MicroWave (TJMW), Bangkok, Thailand, Nov. 2014.
  112. Korkut Kaan Tokgoz, Kimsrun Lim, Kenichi Okada, and Akira Matsuzawa,
    "On the Variations of Shunt Characterization Technique of Decoupling Transmission Line for Millimeter-Wave CMOS Applications,"
    IEICE Vietnam-Japan MicroWave (VJMW), Hanoi, Vietnam, Nov. 2014.
    IEICE Thailand-Japan MicroWave (TJMW), Bangkok, Thailand, Nov. 2014.
  113. Aravind Tharayil Narayanan, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A Tail-Current Modulated VCO with Adaptive Start-up Scheme,"
    IEICE Vietnam-Japan MicroWave (VJMW), Hanoi, Vietnam, Nov. 2014.
    IEICE Thailand-Japan MicroWave (TJMW), Bangkok, Thailand, Nov. 2014.
  114. Teerachot Siriburanon, Tomohiro Ueno, Kento Kimura, Satoshi Kondo, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A 60-GHz Sub-Sampling PLL Using A Dual-Step-Mixing ILFD,"(invited)
    IEEE Asia-Pacific Microwave Conference (APMC), Sendai, Japan, Nov. 2014.
  115. Kenichi Okada,
    "A Millimeter-Wave CMOS Transceiver Toward More Than 300Gbps,"(invited)
    IEEE Asia-Pacific Microwave Conference (APMC), Sendai, Japan, Nov. 2014.
  116. Korkut Kaan Tokgoz, Kimsrun Lim, Kenichi Okada, and Akira Matsuzawa,
    "Shunt Characterization Technique of Decoupling Transmission Line for Millimeter-Wave CMOS Amplifier Design,"
    IEEE Asia-Pacific Microwave Conference (APMC), Sendai, Japan, Nov. 2014.
  117. Naoya Oikawa, Jiro Hirokawa, Hiroshi Nakano, Yasutake Hirachi, Kenichi Okada, and Makoto Ando,
    "Coaxial-line Connection of a Circularly-polarized Patch Array Antenna on the Thick Resin and a 60 GHz-band Quadrature Oscillator Chip," iWEM 2014.
  118. Rui Wu, Qinghong Bu, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A 0.015-mm2 60-GHz Reconfigurable Wake-Up Receiver by Reusing Multi-Stage LNAs,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), KaoHsiung, Taiwan, Nov. 2014.
  119. Aravind Tharayil Narayanan, Wei Deng, Dongsheng Yang, Rui Wu, Kenichi Okada, and Akira Matsuzawa,
    "A 0.011mm2 PVT-Robust Fully-Synthesizable CDR with a Data Rate of 10.05Gb/s in 28nm FD SOI,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), KaoHsiung, Taiwan, Nov. 2014.
  120. Aravind Tharayil Narayanan, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A Tail-Feedback VCO with Self-Adjusting Current Modulation Scheme,"
    IEEE MTT-S European Microwave Conference (EuMC), Rome, Italy, Oct. 2014.
  121. Rui Wu, Wei Deng, Shinji Sato, Takuichi Hirano, Ning Li, Takeshi Inoue, Hitoshi Sakane, Kenichi Okada, and Akira Matsuzawa,
    "A 60-GHz Efficiency-Enhanced On-Chip Dipole Antenna Using Helium-3 Ion Implantation Process,"
    IEEE MTT-S European Microwave Conference (EuMC), Rome, Italy, Oct. 2014.
  122. Aravind Tharayil Narayanan, Kento Kimura, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A Pulse-Driven LC-VCO with a Figure-of-Merit of -192dBc/Hz,"
    IEEE European Solid-State Circuits Conference (ESSCIRC), Venice, Italy, Sep. 2014.
  123. Korkut Kaan Tokgoz, Nurul Fajri, Yuuki Seo, Seitarou Kawai, Kenichi Okada, and Akira Matsuzawa,
    "A Characterization Method of On-Chip Tee-Junction for Millimeter-Wave CMOS Circuit Design,"
    International Conference on Solid State Devices and Materials (SSDM), Tsukuba, Japan, Sep. 2014.
  124. Kenichi Okada,
    "Digitally Assisted Wireless Transceivers and Synthesizers,"(invited)
    IEEE Symposium on VLSI Circuits (VLSI Circuits), Honolulu, HI, pp. 1-88, June 2014.
  125. Ning Li, Kenichi Okada, Takeshi Inoue, Takuichi Hirano, Qinghong Bu, Aravind Tharayil Narayanan, Teerachot Siriburanon, Hitoshi Sakane, and Akira Matsuzawa,
    "High-Q Inductors on Locally Semi-Insulated Si Substrate by Helium-3 Bombardment for RF CMOS Integrated Circuits,"
    IEEE Symposium on VLSI Technology (VLSI Technology), Honolulu, HI, pp. 189-190, June 2014.
  126. Kenichi Okada,
    "60GHz WiGig Frequency Synthesizer Using Injection Locked Oscillator,"(invited)
    IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Tampa, FL, pp. 109-134, June 2014.
  127. Teerachot Siriburanon, Tomohiro Ueno, Kento Kimura, Satoshi Kondo, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A 60-GHz Sub-Sampling Frequency Synthesizer Using Sub-Harmonic Injection-Locked Quadrature Oscillators,"
    IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Tampa, FL, pp. 105-108, June 2014.
  128. Rui Wu, Wei Deng, Shinji Sato, Takuichi Hirano, Ning Li, Takeshi Inoue, Hitoshi Sakane, Kenichi Okada, and Akira Matsuzawa,
    "A 17-mW 5-Gb/s 60-GHz CMOS Transmitter with Efficiency-Enhanced On-Chip Antenna,"
    IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Tampa, FL, pp. 381-384, June 2014.
  129. Wei Deng, Dongsheng Yang, Tomohiro Ueno, Teerachot Siriburanon, Satoshi Kondo, Kenichi Okada, and Akira Matsuzawa,
    "A 0.0066mm2 780µW Fully Synthesizable PLL with a Current Output DAC and an Interpolative-Phase Coupled Oscillator using Edge Injection Technique,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 266-267, Feb. 2014.
  130. Kenichi Okada, Ryo Minami, Yuuki Tsukui, Seitaro Kawai, Yuuki Seo, Shinji Sato, Satoshi Kondo, Tomohiro Ueno, Yasuaki Takeuchi, Tatsuya Yamaguchi, Ahmed Musa, Rui Wu, Masaya Miyahara, and Akira Matsuzawa,
    "A 64-QAM 60GHz CMOS Transceiver with 4-Channel Bonding,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 346-347, Feb. 2014.
  131. Masaya Miyahara, Ibuki Mano, Masaaki Nakayama, Kenichi Okada, and Akira Matsuzawa,
    "A 2.2GS/s 7b 27.4mW Time-Based Folding-Flash ADC with Resistively Averaged Voltage-to-Time Amplifiers,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 388-389, Feb. 2014.
  132. Wei Deng, Ahmed Musa, Teerachot Siriburanon, Masaya Miyahara, Kenichi Okada, and Akira Matsuzawa,
    "A Dual-loop Injection-locked PLL with All-digital Background Calibration System for On-chip Clock Generation,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Singapore, pp.21-22, Jan. 2014.
  133. Teerachot Siriburanon, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A Swing-Enhanced Current-Reuse Class-C VCO with Dynamic Bias Control Circuits,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Singapore, pp.25-26, Jan. 2014.
  134. Kenichi Okada,
    "Challenges Toward Millimeter-wave CMOS Circuits Enhanced by Design Techniques,"(invited)
    IEEE International Electron Devices Meeting (IEDM), Washington, DC, pp.455-458, Dec. 2013.
  135. Teerachot Siriburanon, Wei Deng, Ahmed Musa, Kenichi Okada, and Akira Matsuzawa,
    "A Dual-Step-Mixing ILFD using a Direct Injection Technique for High-Order Division Ratios in 60GHz Applications,"
    IEICE Thailand-Japan MicroWave (TJMW), Bangkok, Thailand, Dec. 2013.
  136. Rui Wu, Kenichi Okada, and Akira Matsuzawa,
    "An AC-mode HCI Model and Output Power Management Scheme for Millimeter-wave PAs,"
    IEEE/ACM Workshop on Variability Modeling and Characterization, San Jose, CA, Nov. 2013.
  137. Kenichi Okada,
    "Millimeter-wave CMOS Transceivers for Multi-Gb/s Wireless Communications,"(invited)
    International Workshop on Cloud Cooperated Heterogeneous Networks, Oct. 2013.
  138. Yuki Yao, Takuichi Hirano, Kenichi Okada, Jiro Hirokawa, and Makoto Ando,
    "60GHz On-Chip Loop Antenna Integrated in a 0.18µm CMOS Technology,"
    International Symposium on Antennas and Propagation (ISAP), Nanjing, China, Oct. 2013.
  139. Korkut Kaan Tokgoz, Kimsrun Lim, Seitarou Kawai, Kenichi Okada, and Akira Matsuzawa,
    "Crossing Transmission Line Modeling Using Two-port Measurements,"
    International Conference on Solid State Devices and Materials (SSDM), Fukuoka, Japan, Sep. 2013.
  140. Teerachot Siriburanon, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A Constant-Current-Controlled Class-C VCO using a Self-Adjusting Replica Biasing Scheme,"
    IEEE MTT-S European Microwave Conference (EuMC), Nuremberg, Germany, pp. 109-112, Oct. 2013.
  141. Satoshi Kondo, Tatsuya Yamaguchi, Yuuki Tsukui, Ryo Minami, Yasuaki Takeuchi, Ahmed Musa, Kenichi Okada, and Akira Matsuzawa,
    "A 60-GHz CMOS Direct-Conversion Transmitter with Injection-Locking I/Q Calibration,"
    IEEE MTT-S European Microwave Conference (EuMC), Nuremberg, Germany, pp. 300-303, Oct. 2013.
  142. Teerachot Siriburanon, Wei Deng, Ahmed Musa, Kenichi Okada, and Akira Matsuzawa,
    "A 13.2% Locking-Range Divide-by-6, 3.1mW, ILFD Using Even-Harmonic-Enhanced Direct Injection Technique for Millimeter-Wave PLLs,"
    IEEE European Solid-State Circuits Conference (ESSCIRC), Bucharest, Romania, pp.403-406, Sep. 2013.
  143. Kenichi Okada,
    "Analog Designer's Play-Ground Beyond 20nm, Is it Circuit Physics or Auto Place&Route?,"(Rump session)
    IEEE Symposium on VLSI Circuits (VLSI Circuits), Kyoto, Japan, June 2013.
  144. Teerachot Siriburanon, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A Current-Reuse Class-C LC-VCO with an Adaptive Bias Scheme,"
    IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Seattle, WA, pp.35-38, June 2013.
  145. Seitaro Kawai, Ryo Minami, Yuki Tsukui, Yasuaki Takeuchi, Hiroki Asada, Ahmed Musa, Rui Murakami, Takahiro Sato, Qinghong Bu, Ning Li, Masaya Miyahara, Kenichi Okada, and Akira Matsuzawa,
    "A Digitally-Calibrated 20-Gb/s 60-GHz Direct-Conversion Transceiver in 65-nm CMOS,"
    IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Seattle, WA, pp.137-140, June 2013.
  146. Takuichi Hirano, Kenichi Okada, Jiro Hirokawa, and Makoto Ando,
    "Evaluation of Effective Permittivity and Permeability for Dummy Metal Fills in a CMOS Chip Using Capacitor and Inductor Model,"(invited)
    URSI International Symposium on Electromagnetic Theory (EMTS), Hiroshima, Japan, pp.695-697, May 2013.
  147. Takuichi Hirano, Kenichi Okada, Jiro Hirokawa, and Makoto Ando,
    "Approximate Evaluation of Effective Permittivity for Metal Dummies in a CMOS Chip Using Electrostatic Capacitor Model,"
    IEEE European Conference on Antennas and Propagation (EuCAP), Gothenburg, Sweden, pp. 1181-1183, Apr. 2013.
  148. Yuuki Tsukui, Kenichi Okada, and Akira Matsuzawa,
    "A 60GHz up-conversion mixer using asymmetric layout with -41.1dBc LO leakage,"
    IEEE Latin American Symposium on Circuits and Systems (LASCAS), Cusco, Peru, Feb. 2013.
  149. Wei Deng, Ahmed Musa, Teerachot Siriburanon, Masaya Miyahara, Kenichi Okada, and Akira Matsuzawa,
    "A 0.022mm2 970µW Dual-Loop Injection-Locked PLL with -243dB FOM Using Synthesizable All-Digital PVT Calibration Circuits,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp.248-249, Feb. 2013.
  150. Qinghong Bu, Ning Li, Kenichi Okada, and Akira Matsuzawa,
    "A Comparison between Common-source and Cascode Topologies for 60GHz Amplifier Design in 65nm CMOS,"
    IEEE EDS WIMNACT-37 Future Trend of Nanodevices and Photonics, Feb. 2013.
  151. Teerachot Siriburanon, Wei Deng, Ahmed Musa, Kenichi Okada, and Akira Matsuzawa,
    "A 60GHz PVT-Tolerant Injection-locked Frequency Synthesizer with a Background Calibration Technique,"
    IEEE EDS WIMNACT-37 Future Trend of Nanodevices and Photonics, Feb. 2013.
  152. Seitaro Kawai, Ryo Minami, Ahmed Musa, Takahiro Sato, Ning Li, Tatsuya Yamaguchi, Yasuaki Takeuchi, Yuki Tsukui, Kenichi Okada, and Akira Matsuzawa,
    "A Full 4-Channel 60 GHz Direct-Conversion Transceiver,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Yokohama, Japan, pp.95-96, Jan. 2013.
  153. Teerachot Siriburanon, Wei Deng, Ahmed Musa, Kenichi Okada, and Akira Matsuzawa,
    "A Sub-harmonic Injection-locked Frequency Synthesizer with Frequency Calibration Scheme for Use in 60GHz TDD Transceivers,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Yokohama, Japan, pp.97-98, Jan. 2013.
  154. Wei Deng, Teerachot Siriburanon, Ahmed Musa, Kenichi Okada, and Akira Matsuzawa,
    "A Fractional-N Harmonic Injection-locked Frequency Synthesizer with 10MHz-6.6GHz Quadrature Outputs for Software-Defined Radios,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Yokohama, Japan, pp. 99-100, Jan. 2013.
  155. Ryo Minami, Keigo Bunsen, Kenichi Okada, and Akira Matsuzawa,
    "A 60GHz Power Amplifier Using high Common-Mode Rejection Technique,"
    IEEE Asia-Pacific Microwave Conference (APMC), Kaohsiung, Taiwan, pp.10-12, Dec. 2012.
  156. Teerachot Siriburanon, Takahiro Sato, Ahmed Musa, Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A 20 GHz Push-Push Voltage-Controlled Oscillator for a 60 GHz Frequency Synthesizer,"
    IEEE Asia-Pacific Microwave Conference (APMC), Kaohsiung, Taiwan, pp.205-207, Dec. 2012.
  157. Takuichi Hirano, Tatsuya Yamaguchi, Ning Li, Kenichi Okada, Jiro Hirokawa, and Makoto Ando,
    "60GHz On-Chip Dipole Antenna with Differential Feed,"
    IEEE Asia-Pacific Microwave Conference (APMC), Kaohsiung, Taiwan, pp.304-306, Dec. 2012.
  158. Takashi Sumida, Takuichi Hirano, Kenichi Okada, Jiro Hirokawa, and Makoto Ando,
    "Electromagnetic Analysis of an On-Chip Spiral Inductor in the Millimeter-Wave Band,"
    IEEE Asia-Pacific Microwave Conference (APMC), Kaohsiung, Taiwan, pp.1277-1279, Dec. 2012.
  159. Wei Deng, Ahmed Musa, Kenichi Okada, and Akira Matsuzawa,
    "A 0.38mm2, 10MHz-6.6GHz Quadrature Frequency Synthesizer Using Fractional-N Injection-Locked Technique,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), Kobe, Japan, pp.353-356, Nov. 2012.
  160. Rui Wu, Yuuki Tsukui, Ryo Minami, Kenichi Okada, and Akira Matsuzawa,
    "A 0.7V-to-1.0V 10.1dBm-to-13.2dBm 60-GHz Power Amplifier Using Digitally-Assisted LDO Considering HCI Issues,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), Kobe, Japan, pp.269-272, Nov. 2012.
  161. Kenichi Okada,
    "60-GHz CMOS Direct-Conversion Transceiver Using Injection-Lock Oscillators,"(invited)
    IEEE Compound Semiconductor IC Symposium (CSICS), La Jolla, CA, Oct. 2012.
  162. Takuichi Hirano, Kenichi Okada, Jiro Hirokawa, and Makoto Ando,
    "60 GHz On-chip Patch Antenna Integrated in a 0.18-µm CMOS Technology,"
    International Symposium on Antennas and Propagation (ISAP), Nagoya, Japan, Oct. 2012.
  163. Qinghong Bu, Ning Li, Kenichi Okada, and Akira Matsuzawa,
    "A Comparison between Common-source and Cascode Topologies for 60GHz Amplifier Design in 65nm CMOS,"
    International Conference on Solid State Devices and Materials (SSDM), Kyoto, Japan, Sep. 2012.
  164. Kenichi Okada,
    "Millimeter-Wave CMOS Device Modeling and Issues,"(invited)
    IEEE European Solid-State Circuits Conference (ESSCIRC) Workshop, Bordeaux, France, Sep. 2012.
  165. Kenichi Okada,
    "A 60-GHz CMOS Direct-Conversion Transceiver,"(invited)
    IEEE European Solid-State Circuits Conference (ESSCIRC) Tutorial, Bordeaux, France, Sep. 2012.
  166. Wei Deng, Teerachot Siriburanon, Ahmed Musa, Kenichi Okada, and Akira Matsuzawa,
    "A 58.1-to-65.0GHz Frequency Synthesizer with Background Calibration for Millimeter-wave TDD Transceivers,"
    IEEE European Solid-State Circuits Conference (ESSCIRC), Bordeaux, France, pp.201-204, Sep. 2012.
  167. Takuichi Hirano, Kenichi Okada, Jiro Hirokawa, and Makoto Ando,
    "Electromagnetic Analysis of Effective Anisotropic Material Parameters for Metal Dummies in a CMOS Chip,"
    IEEE AP-S International Symposium, Chicago, IL, July 2012.
  168. Kenichi Okada,
    "A Millimeter-wave CMOS Transceiver for 10Gb/s Wireless Communication,"(invited)
    CMOS Emerging Technologies, Vancouver, Canada, July 2012.
  169. Hamid Kiumarsi, Hiroyuki Ito, Noboru Ishihara, Kenichi Okada, Yusuke Uemichi, Yasuto Chiba, and Kazuya Masu,
    "A 3-dB Quadrature WLP Coupler for 60GHz Applications,"
    Materials Research Society Spring Meeting, San Francisco, USA, April 2012.
  170. Kenichi Okada, Keitarou Kondou, Masaya Miyahara, Masashi Shinagawa, Hiroki Asada, Ryo Minami, Tatsuya Yamaguchi, Ahmed Musa, Yuuki Tsukui, Yasuo Asakura, Shinya Tamonoki, Hiroyuki Yamagishi, Yasufumi Hino, Takahiro Sato, Hironori Sakaguchi, Naoki Shimasaki, Toshihiko Ito, Yasuaki Takeuchi, Ning Li, Qinghong Bu, Rui Murakami, Keigo Bunsen, Kota Matsushita, Makoto Noda, and Akira Matsuzawa,
    "A Full 4-Channel 6.3Gb/s 60GHz Direct-Conversion Transceiver With Low-Power Analog and Digital Baseband Circuitry,"
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp.218-219, Feb. 2012.
  171. Ahmed Musa, Han Jeonghoon, Kenichi Okada, and Akira Matsuzawa,
    "Injection Locked 1.17GHz 7.2mW Dual Ring VCOs with Synthesizable All Digital PVT Calibration Circuitry,"
    IEEE International Solid-State Circuits Conference (ISSCC) Student Research Preview, San Francisco, CA, Feb. 2012.
  172. Ryo Minami, Hiroki Asada, Ahmed Musa, Takahiro Sato, Ning Li, Tatsuya Yamaguchi, Yasuaki Takeuchi, Win Chiavipas, Kenichi Okada, and Akira Matsuzawa,
    "A 60-GHz 16QAM 11Gbps Direct-Conversion Transceiver in 65nm CMOS,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Sydney, Australia, pp.467-468, Jan. 2012.
  173. Ahmed Musa, Kenichi Okada, and Akira Matsuzawa,
    "Progressive Mixing 20GHz ILFD with Wide Locking Range for Higher Division Ratios,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Sydney, Australia, pp.559-560, Jan. 2012.
  174. Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A PVT-robust Feedback Class-C VCO Using an Oscillation Swing Enhancement Technique,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Sydney, Australia, pp.563-564, Jan. 2012.
  175. Ryo Minami, Kota Matsushita, Hiroki Asada, Kenichi Okada, and Akira Matsuzawa,
    "A 60GHz CMOS Power Amplifier Using Varactor Cross-Coupling Neutralization with Adaptive Bias,"
    IEEE Asia-Pacific Microwave Conference (APMC), Melbourne, Australia, Dec. 2011.
  176. Yuki Tsukui, Hiroki Asada, Han ChanGyo, Kenichi Okada, and Akira Matsuzawa,
    "Area Reduction of Millimeter-Wave CMOS Amplifier Using Narrow Transmission Line,"
    IEEE Asia-Pacific Microwave Conference (APMC), Melbourne, Australia, Dec. 2011.
  177. Qinghong Bu, Ning Li, Kenichi Okada, and Akira Matsuzawa,
    "A Wideband LNA with an Excellent Gain Flatness for 60GHz 16QAM Modulation in 65nm CMOS,"
    IEEE Asia-Pacific Microwave Conference (APMC), Melbourne, Australia, pp.1901-1904, Dec. 2011.
  178. Toshihiko Ito, Kenichi Okada, and Akira Matsuzawa,
    "A 0.8-1.8GHz Wideband Low Noise Amplifier with Capacitive Feedback,"
    IEEE Asia-Pacific Microwave Conference (APMC), Melbourne, Australia, Dec. 2011.
  179. Akira Matsuzawa, and Kenichi Okada,
    "Short Range and Long Range Millimeter Wave Systems and RF/BB SoCs,"(invited)
    IEEE International Workshop on RF Integration Technology (RFIT), Beijing, China, pp.93-96, Nov. 2011.
  180. Akira Matsuzawa, and Kenichi Okada,
    "60GHz Direct Conversion CMOS Transceiver Design,"(invited)
    IEEE International Conference of Electron Devices and Solid-State Circuits, Tianjin, China, Nov. 2011.
  181. Kenichi Okada,
    "A 60GHz 16QAM/8PSK/QPSK/BPSK Direct-Conversion Transceiver,"(invited)
    International SoC Design Conference (ISOCC), Seoul, Korea, pp.20-23, Nov. 2011.
  182. Ahmed Musa, Kenichi Okada, and Akira Matsuzawa,
    "A 20GHz ILFD with Locking Range of 31% for Divide-by-4 and 15% for Divide-by-8 Using Progressive Mixing,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), Jeju, Korea, pp.85-88, Nov. 2011.
  183. Hiroki Asada, Keigo Bunsen, Kota Matsushita, Rui Murakami, Qinghong Bu, Ahmed Musa, Takahiro Sato, Tatsuya Yamaguchi, Ryo Minami, Toshihiko Ito, Kenichi Okada, and Akira Matsuzawa,
    "A 60GHz 16Gb/s 16QAM Low-Power Direct-Conversion Transceiver Using Capacitive Cross-Coupling Neutralization in 65nm CMOS,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), Jeju, Korea, pp.373-376, Nov. 2011.
  184. Takuichi Hirano, Kenichi Okada, Jiro Hirokawa, and Makoto Ando,
    "Effect of Filling Factor and Size of Dummy Fills in Microstrip Line on a CMOS Chip,"
    International Symposium on Antennas and Propagation (ISAP), Jeju, Korea, Oct. 2011.
  185. Junki Mihira, Takuichi Hirano, Kenichi Okada, Jiro Hirokawa, and Makoto Ando,
    "Characteristic of On-Chip Dipole Antennas Considering Silicides on the Surface of Silicon Substrate,"
    International Symposium on Antennas and Propagation (ISAP), Jeju, Korea, Oct. 2011.
  186. Hiroki Asada, Kota Matsushita, Keigo Bunsen, Kenichi Okada, and Akira Matsuzawa,
    "A 60GHz CMOS Power Amplifier Using Capacitive Cross-Coupling Neutralization with 16% PAE,"
    IEEE MTT-S European Microwave Conference (EuMC), Manchester, UK, pp.115-118, Oct. 2011.
  187. Ryo Minami, Changyo Han, Kota Matsushita, Kenichi Okada, and Akira Matsuzawa,
    "Effect of Transmission Line Modeling Using Different De-embedding Methods,"
    IEEE MTT-S European Microwave Conference (EuMC), Manchester, UK, Oct. 2011.
  188. Yasuaki Takeuchi, Kenichi Okada, and Akira Matsuzawa,
    "An Improved Dual-Conduction Class-C VCO Using a Tail Resistor,"
    IEEE MTT-S European Microwave Conference (EuMC), Manchester, UK, Oct. 2011.
  189. Kenichi Okada,
    "A 60GHz 16QAM/8PSK/QPSK/BPSK Direct-Conversion Transceiver,"(invited)
    IEEE International Conference on ASIC (ASICON), Xiamen, China, Oct. 2011.
  190. Qinghong Bu, Ning Li, Hiroki Asada, Kenichi Okada, and Akira Matsuzawa,
    "Analysis of Cascode Structure for 60GHz Amplifier Design in 65nm CMOS,"
    International Conference on Solid State Devices and Materials (SSDM), Nagoya, Japan, Sep. 2011.
  191. Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A Feedback Class-C VCO with Robust Startup Condition over PVT Variations and Enhanced Oscillation Swing,"
    IEEE European Solid-State Circuits Conference (ESSCIRC), Helsinki, Finland, pp.499-502 Sep. 2011.
  192. Kenichi Okada,
    "Measurement and Characterization of Millimeter-wave Passive and Active Devices,"(invited)
    IEEE International Conference on Simulation of Semiconductor Processes and Devices (SISPAD), Osaka, Japan, Sep. 2011.
  193. Kenichi Okada,
    "Multi-standard CMOS Frequency Synthesizers for Cognitive Radios,"(invited)
    IEEE International Midwest Symposium on Circuits and Systems (MWSCAS), Seoul, Korea, Aug. 2011.
  194. Kenichi Okada,
    "Can FinFET/FDSOI Compensate for the Stagnation in Scaling?,"(Rump session)
    IEEE Symposium on VLSI Technology, Kyoto, Japan, June 2011.
  195. Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A 25MHz-6.44GHz LC-VCO Using a 5-port Inductor for Multi-band Frequency Generation,"
    IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Baltimore, MD, June 2011.
  196. Akira Matsuzawa, and Kenichi Okada,
    "Indoor and Outdoor Millimeter Wave Systems and RF/BB SoCs,"(invited)
    IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Baltimore, MD, June 2011.
  197. Yusuke Uemichi, Hideki Hatakeyama, Takuya Aizawa, Kenichi Okada, Hamid Kiumarsi, Satoru Tanoi, Noboru Ishihara, and Kazuya Masu,
    "Low-loss and Compact Millimeter-wave Balun on Si,"
    IEEE MTT-S International Microwave Symposium (IMS), Baltimore, MD, June 2011.
  198. Kenichi Okada, Kota Matsushita, Keigo Bunsen, Rui Murakami, Ahmed Musa, Takahiro Sato, Hiroki Asada, Naoki Takayama, Ning Li, Shogo Ito, Win Chaivipas, Ryo Minami, and Akira Matsuzawa,
    "A 60GHz 16QAM/8PSK/QPSK/BPSK Direct-Conversion Transceiver for IEEE 802.15.3c,"
    IEEE International Solid-State Circuits Conference (ISSCC), pp.160-161, San Francisco, CA, Feb. 2011.
  199. Ahmed Musa, Rui Murakami, Takahiro Sato, Win Chaivipas, Kenichi Okada, and Akira Matsuzawa,
    "A 58-63.6GHz Quadrature PLL Frequency Synthesizer Using Dual-Injection Technique,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Yokohama, Japan, pp.101-102, Jan. 2011.
  200. Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "An Ultra-Low-Voltage LC-VCO with a Frequency Extension Circuit for Future 0.5-V Clock Generation,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), Yokohama, Japan, pp.103-104, Jan. 2011.
  201. Takuichi Hirano, Kenichi Okada, Jiro Hirokawa, and Makoto Ando,
    "Accuracy Investigation of the De-embedding Technique using Open and Short Patterns for On-Wafer RF Characterization,"
    IEEE Asia-Pacific Microwave Conference (APMC), Yokohama, Japan, pp.1436-1439, Dec. 2010.
  202. Ryo Minami, JeeYoung Hong, Daisuke Imanishi, Kenichi Okada, and Akira Matsuzawa,
    "Measurement of Integrated PA-to-LNA Isolation on Si CMOS Chip,"
    IEEE Asia-Pacific Microwave Conference (APMC), Yokohama, Japan, pp.1629-1632, Dec. 2010.
  203. Qing-Hong Bu, Ning Li, Keigo Bunsen, Hiroki Asada, Kouta Matsushita, Kenichi Okada, and Akira Matsuzawa,
    "Evaluation of a Multi-line De-embedding Technique for Millimeter-Wave CMOS Circuit Design,"
    IEEE Asia-Pacific Microwave Conference (APMC), Yokohama, Japan, pp.1901-1904, Dec. 2010.
  204. Kenichi Okada,
    "A Challenge to a 60GHz CMOS Wireless Transceiver for 40Gbps,"(invited)
    The International Workshop on Millimeter Wave Wireless Technology and Applications, Tokyo, Japan, pp.92-93, Dec. 2010.
  205. Takuichi Hirano, Kenichi Okada, Jiro Hirokawa, and Makoto Ando,
    "Thru-Line (TL) Calibration Technique for On-Wafer Measurement,"
    International Symposium on Antennas and Propagation (ISAP), Macau, China, Nov. 2010.
  206. Yuya Ono, Takuichi Hirano, Kenichi Okada, Jiro Hirokawa, and Makoto Ando,
    "Eigenmode Analysis of Propagation Constant for a Transmission Line with Dummy Metals on a Si CMOS Substrate,"
    International Symposium on Antennas and Propagation (ISAP), Macau, China, Nov. 2010.
  207. Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "A 0.5-V, 0.05-to-3.2 GHz, 4.1-to-6.4 GHz LC-VCO using E-TSPC frequency divider with forward body bias for sub-picosecond jitter clock generation,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), Beijing, China, pp.93-96, Nov. 2010.
  208. Ahmed Musa, Rui Murakami, Takahiro Sato, Win Chaivipas, Kenichi Okada, and Akira Matsuzawa,
    "A 58-63.6GHz Quadrature PLL Frequency Synthesizer in 65nm CMOS,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), Beijing, China, pp.189-192, Nov. 2010.
  209. Rui Murakami, Kenichi Okada, and Akira Matsuzawa,
    "A 484-um2 21-GHz LC-VCO beneath a Stacked-Spiral Inductor,"
    IEEE MTT-S European Microwave Conference (EuMC), Paris, France, pp.1615-1618, Sep. 2010.
  210. Toshihiko Ito, Masaki Kanemaru, Satoshi Furuya, Dong Ta Ngoc Huy, Kenichi Okada, and Akira Matsuzawa,
    "A 0.8-1.5 GHz Multi-Standard WCDMA Receiver with an Inter-Stage Tunable Notch Filter,"
    IEEE MTT-S European Microwave Conference (EuMC), Paris, France, pp.1118-1121, Sep. 2010.
  211. Wei Deng, Kenichi Okada, and Akira Matsuzawa,
    "Phase Noise Scaling of LC-VCO for Ultra Low Supply Voltage,"
    URSI Asia-Pacific Radio Science Conference (AP-RASC), Toyama, Japan, Sep. 2010.
  212. JeeYoung Hong, Daisuke Imanishi, Kenichi Okada, and Akira Matsuzawa,
    "A 6-10 GHz CMOS Tunable Power Amplifier for Reconfigurable RF Transceivers,"
    International Conference on Solid State Devices and Materials (SSDM), Tokyo, Japan, pp.101-102, Sep. 2010.
  213. Qing-Hong Bu, Ning Li, Naoki Takayama, Kenichi Okada, and Akira Matsuzawa,
    "Multi-Line De-Embedding Technique for Millimeter-Wave Circuit Design,"
    International Conference on Solid State Devices and Materials (SSDM), Tokyo, Japan, Sep. 2010.
  214. JeeYoung Hong, Daisuke Imanishi, Kenichi Okada, and Akira Matsuzawa,
    "Two-Stage Band-Selectable CMOS Power Amplifier,"
    IEEE Power Amplifier Symposium, Tempe, AZ, Sep. 2010.
  215. Ning Li, Keigo Bunsen, Naoki Takayama, Qinghong Bu, Toshihide Suzuki, Masaru Sato, Tatsuya Hirose, Kenichi Okada, and Akira Matsuzawa,
    "A 24 dB Gain 51-68 GHz CMOS Low Noise Amplifier Using Asymmetric-Layout Transistors,"
    IEEE European Solid-State Circuits Conference (ESSCIRC), Seville, Spain, pp.342-345, Sep. 2010.
  216. JeeYoung Hong, Daisuke Imanishi, Kenichi Okada, and Akira Matsuzawa,
    "A 2.4 GHz Fully Integrated CMOS Power Amplifier Using Capacitive Cross-Coupling,"
    IEEE International Conference on Wireless Information Technology and Systems (ICWITS), Honolulu, HI, Aug. 2010.
  217. Yusuke Uemichi, Hideki Hatakeyama, Takuya Aizawa, Shuhei Amakawa, Kenichi Okada, Noboru Ishihara, and Kazuya Masu,
    "Low-loss Millimeter-wave Passives on Si,"
    IEEE International Conference on Wireless Information Technology and Systems (ICWITS), Honolulu, HI, Aug. 2010.
  218. Shoichi Hara, Kenichi Okada, and Akira Matsuzawa,
    "10MHz to 7GHz Quadrature Signal Generation Using a Divide-by-4/3, -3/2, -5/3, -2, -5/2, -3, -4, and -5 Injection-Locked Frequency Divider,"
    IEEE Symposium on VLSI Circuits (VLSI Circuits), Honolulu, HI, pp.51-52, June 2010.
  219. Kenichi Okada,
    "Test Structures for Millimeter-Wave CMOS Circuit Design,"(tutorial)
    IEEE International Conference on Microelectronic Test Structures (ICMTS), Hiroshima, Japan, pp.119-160, March 2010.
  220. Kenichi Okada,
    "Reconfigurable RF CMOS Circuits for Cognitive Radios,"(invited)
    IEEE International Solid-State Circuits Conference (ISSCC) Forum, pp.512-513, San Francisco, CA, Feb. 2010.
  221. Shoichi Hara, Kenichi Okada, and Akira Matsuzawa,
    "A 10MHz to 7GHz Quadrature Signal Generation Using a Divide-by-4/3, -3/2, -5/3, -2, -5/2, -3, -4, and -5 Injection-Locked Frequency Divider,"
    IEEE International Solid-State Circuits Conference (ISSCC) Student Research Preview, p.523, San Francisco, CA, Feb. 2010.
  222. Naoki Takayama, Kota Matsushita, Shogo Ito, Ning Li, Kenichi Okada, and Akira Matsuzawa,
    "A 60GHz Direct-Conversion Transmitter in 65nm CMOS Technology,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), pp.363-364, Taipei, Taiwan, Jan. 2010.
  223. Daisuke Imanishi, JeeYoung Hong, Kenichi Okada, and Akira Matsuzawa,
    "A 2-6 GHz Fully Integrated Tunable CMOS Power Amplifier for Multi-Standard Transmitters,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), pp.351-352, Taipei, Taiwan, Jan. 2010.
  224. Kota Matsushita, Naoki Takayama, Ning Li, Shogo ito, Kenichi Okada, and Akira Matsuzawa,
    "CMOS Device Modeling for Millimeter-Wave Power Amplifiers,"
    IEEE International Workshop on RF Integration Technology (RFIT), pp.68-71, Singapore, Dec. 2009.
  225. Shinji Nagamine, Fumio Ozawa, Toshifumi Shirosaki, Toru Taniguchi, and Kenichi Okada,
    "Multifunctional Frequency Converter MMIC for 38GHz Band 600Mbps Multi-level QAM Wireless System,"
    IEEE International Workshop on RF Integration Technology (RFIT), pp.229-232, Singapore, Dec. 2009.
  226. Shoichi Hara, Takahiro Sato, Rui Murakami, Kenichi Okada, and Akira Matsuzawa,
    "60GHz Injection Locked Frequency Quadrupler with Quadrature Outputs in 65nm CMOS Process,"
    IEEE Asia-Pacific Microwave Conference (APMC), Singapore, Dec. 2009.
  227. Naoki Takayama, Kota Matsushita, Shogo ito, Ning Li, Kenichi Okada, and Akira Matsuzawa,
    "Multi-Line De-Embedding Technique for Mm-wave CMOS Circuits,"
    IEEE Asia-Pacific Microwave Conference (APMC), Singapore, Dec. 2009.
  228. Kenichi Okada, and Akira Matsuzawa,
    "Reconfigurable RF CMOS Circuit Design for Cognitive Radios,"(invited)
    International SoC Design Conference (ISOCC), Busan, Korea, Nov. 2009.
  229. Daisuke Imanishi, Kenichi Okada, and Akira Matsuzawa,
    "A 0.9-3.0 GHz Fully Integrated Tunable CMOS Power Amplifier for Multi-Band Transmitters,"
    Cross-strait Elite University IC Design Workshop, pp.98-104, Taipei, Taiwan, Nov. 2009.
  230. Shoichi Hara, Kenichi Okada, and Akira Matsuzawa,
    "A 9.3MHz to 5.7 GHz Tunable LC-based VCO Using a Divide-by-N Injection-Locked Frequency Divider,"
    Cross-strait Elite University IC Design Workshop, pp.105-110, Taipei, Taiwan, Nov. 2009.
  231. Shoichi Hara, Kenichi Okada, and Akira Matsuzawa,
    "A 9.3MHz to 5.7 GHz Tunable LC-based VCO Using a Divide-by-N Injection-Locked Frequency Divider,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), pp.81-84, Taipei, Taiwan, Nov. 2009.
  232. Daisuke Imanishi, Kenichi Okada, and Akira Matsuzawa,
    "A 0.9-3.0 GHz Fully Integrated Tunable CMOS Power Amplifier for Multi-Band Transmitters,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), pp.253-256, Taipei, Taiwan, Nov. 2009.
  233. Rui Murakami, Shoichi Hara, Kenichi Okada, and Akira Matsuzawa,
    "Design Optimization of Voltage Controlled Oscillators in Consideration of Parasitic Capacitance,"
    IEEE International Midwest Symposium on Circuits and Systems (MWSCAS), Cancun, Mexico, Aug. 2009.
  234. Kenichi Okada, You Nomiyama, Rui Murakami, and Akira Matsuzawa,
    "A 0.114-mW Dual-Conduction Class-C CMOS VCO with 0.2-V Power Supply,"
    IEEE Symposium on VLSI Circuits (VLSI Circuits), pp.228-229, Kyoto, Japan, June 2009.
  235. You Nomiyama, Win Chaivipas, Kenichi Okada, and Akira Matsuzawa,
    "Low-Impedance and High-Q Transmission Line for mmw VCO,"
    IEEE Workshop on Signal Propagation on Interconnects (SPI), Strasbourg, France, May 2009.
  236. Kenichi Okada, Kota Matsushita, Naoki Takayama, Shogo Ito, Ning Li, and Akira Matsuzawa,
    "Passive Device Characterization for 60-GHz CMOS Power Amplifiers,"
    IEEE Global Symposium on Millimeter Waves (GSMM), 4-4, Sendai, Japan, Apr. 2009.
  237. Win Chaivipas, Kenichi Okada, and Akira Matsuzawa,
    "A 60GHz CMOS VCO Using a Reduced Resonator Loading Architecture,"
    IEEE International Solid-State Circuits Conference (ISSCC) Student Forum, pp.10-11, San Francisco, CA, Feb. 2009.
  238. Shoichi Hara, Rui Murakami, Kenichi Okada, and Akira Matsuzawa,
    "A Design Optimization of Low-Phase-Noise LC-VCO Using Multiple-Divide Technique,"
    The Workshop on Synthesis And System Integration of Mixed Information Technologies (SASIMI), R5-1, Okinawa, Japan, March 2009.
  239. Ning Li, Kenichi Okada, Toshihide Suzuki, Tatsuya Hirose and Akira Matsuzawa,
    "A Three-Stage 60GHz CMOS LNA Using Dual Noise-Matching Technique for 5dB NF,"
    IEEE Asia-Pacific Microwave Conference (APMC), D3-07, Hong Kong & Macau, China, Dec. 2008.
  240. Masaki Kanemaru, Daisuke Imanishi, Kenichi Okada, and Akira Matsuzawa,
    "Numerical Analysis of Asymmetric Differential Inductors,"
    IEEE Asia-Pacific Microwave Conference (APMC), H4-07, Hong Kong & Macau, China, Dec. 2008.
  241. Win Chaivipas, Kenichi Okada, and Akira Matsuzawa,
    "A 80GHz Voltage Controlled Oscillator With a Negative Varactor in 90nm CMOS Technology,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), pp.133-136, Fukuoka, Japan, Nov. 2008.
  242. Hideki Hatakeyama, Yusuke Uemichi, Kazuma Ohashi, Satoshi Fukuda, Hiroyuki Ito, Kenichi Okada, Takuya Aizawa, Tatsuya Ito, and Kazuya Masu,
    "RF CMOS Circuits with Wafer-Level Packaging Inductors,"
    International Wafer-Level Packaging Conference, San Jose, October 2008.
  243. Susumu Sadoshima, Satoshi Fukuda, Hiroyuki Ito, Kenichi Okada, Hideki Hatakeyama, Naoyuki Ozawa, Masakazu Sato, Takuya Aizawa, Tatsuya Ito, Ryozo Yamauchi, and Kazuya Masu,
    "A 2-GHz-band CMOS Low Noise Amplifier with High-Q Inductors Embedded in Wafer-Level Package,"
    International Conference on Solid State Devices and Materials (SSDM), pp.74-75, Tukuba, Sep. 2008.
  244. Kazuma Ohashi, Yuka Kobayashi, Hiroyuki Ito, Kenichi Okada, Hideki Hatakeyama, Takuya Aizawa, Tatsuya Ito, Ryozo Yamauchi, and Kazuya Masu,
    "A Low Phase Noise LC-VCO with a High-Q Inductor Fabricated by Wafer Level Package Technology,"
    IEEE Radio Frequency Integrated Circuits Symposium (RFIC), pp.123-126, Atlanta, Georgia, USA, June 2008.
  245. Tomoaki Maekawa, Takahiro Ishii, Junki Seita, Hiroyuki Ito, Kenichi Okada, Hideki Hatakeyama, Yusuke Uemichi, Takuya Aizawa, Tatsuya Ito, Ryozo Yamauchi, and Kazuya Masu,
    "A Low-Power Differential Transmission Line Interconnect using Wafer Level Package Technology,"
    IEEE Workshop on Signal Propagation on Interconnects (SPI), Avignon, France, May 2008.
  246. Shoichi Hara, Takeshi Ito, Kenichi Okada, and Akira Matsuzawa,
    "Design Space Exploration of Low-Phase-Noise LC-VCO Using Multiple-Divide Technique,"
    IEEE International Symposium on Circuits and Systems (ISCAS), pp.1966-1969, Seattle, WA, May 2008.
  247. Akiko Mineyama, Hiroyuki Ito, Takahiro Ishii, Kenichi Okada, and Kazuya Masu,
    "LVDS-type On-Chip Transmision Line Interconnect with Passive Equalizers in 90nm CMOS Process,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), pp.97-98, Seoul, Korea, Jan. 2008.
  248. Hong Phuc Ninh, Takashi Moue, Takashi Kurashina, Kenichi Okada, and Akira Matsuzawa,
    "CMOS Direct Sampling Mixer Using Switched Capacitor Filter Technique for Software-Defined Radio,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), pp.103-104, Seoul, Korea, Jan. 2008.
  249. Susumu Sadoshima, Satoshi Fukuda, Tackya Yammouch, Hiroyuki Ito, Kenichi Okada, and Kazuya Masu,
    "Small-Area CMOS RF Distributed Mixer Using Multi-Port Inductors,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), pp.105-106, Seoul, Korea, Jan. 2008.
  250. Kazuma Ohashi, Yusaku Ito, Hiroyuki Ito, Kenichi Okada, Hideki Hatakeyama, Naoyuki Ozawa, Masakazu Sato, Takuya Aizawa, Tatsuya Ito, Ryozo Yamauchi, and Kazuya Masu,
    "A Low-Power Low-Phase-Noise CMOS VCO using RF SiP Technology,"
    IEEE Asia-Pacific Microwave Conference (APMC), pp.1777-1780, Bangkok, Thailand, Dec. 2007.
  251. Takeshi Ito, Win Chaivipas, Kenichi Okada, and Akira Matsuzawa,
    "Dynamic Reconfigurable Si CMOS VCO Using a Transmission-Line Resonator with PMOS-Bias and PMOS-Crosscouple Topology,"
    IEEE Asia-Pacific Microwave Conference (APMC), pp.1785-1788, Bangkok, Thailand, Dec. 2007.
  252. Satoshi Fukuda, Hiroyuki Ito, Kazuhisa Itoi, Masakazu Sato, Tatsuya Ito, Ryozo Yamauchi, Kenichi Okada, and Kazuya Masu,
    "A 5.2GHz CMOS Low Noise Amplifier with High-Q Inductors Embedded in Wafer-Level Chip-Scale Package,"
    IEEE International Workshop on RF Integration Technology (RFIT), pp.34-37, Singapore, Dec. 2007.
  253. Kota Tanaka, Yasuhide Kuramochi, Takashi Kurashina, Kenichi Okada, and Akira Matsuzawa,
    "A 0.026mm² Capacitance-to-Digital Converter for Biotelemetry Applications Using a Charge Redistribution Technique,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), pp.244-247, Jeju, Korea, Nov. 2007.
  254. Win Chaivipas, Takeshi Ito, Takashi Kurashina, Kenichi Okada, and Akira Matsuzawa,
    "Fine and Wide Frequency Tuning Digital Controlled Oscillators Utilizing Capacitance Position Sensitivity in Distributed Resonators,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), pp.424-427, Jeju, Korea, Nov. 2007.
  255. Kazuya Miyashita, Hiroyuki Ito, Kenichi Okada, and Kazuya Masu,
    "High Frequency Characteristics of On-Chip Wirings up to 110 GHz," Advanced Metallization Conference, Asian Session (ADMETA), pp.106-107, Tokyo, Oct. 2007.
  256. Hideki Hatakeyama, Kenichi Okada, Kazuma Ohashi, Yusaku Ito, Naoyuki Ozawa, Masakazu Sato, Takuya Aizawa, Tatsuya Ito, Ryozo Yamauchi, and Kazuya Masu,
    "Wafer-level-packaging inductor with extremely high quality factor and its application to 5.8GHz LC-type voltage controlled oscillator,"
    Advanced Metallization Conference, Asian Session (ADMETA), pp.108-109, Tokyo, Oct. 2007.
  257. Kenichi Okada, Hirotaka Sugawara, Kazuyasu Nishikawa, and Kazuya Masu,
    "Modeling of Three-port Si CMOS On-Chip Symmetric Inductor for Various Operation Modes,"
    IEEE MTT-S European Microwave Conference (EuMC), pp.520-523, Munich, Germany, Oct. 2007.
  258. Hideki Hatakeyama, Kenichi Okada, Kazuma Ohashi, Yusaku Ito, Naoyuki Ozawa, Masakazu Sato, Takuya Aizawa, Tatsuya Ito, Ryozo Yamauchi, and Kazuya Masu,
    "Wafer-level-packaging inductor with extremely high quality factor and its application to 5.8GHz LC-type voltage controlled oscillator,"
    Advanced Metallization Conference (AMC), pp.8-9, Albany, New York, Oct. 2007
  259. Kazuya Miyashita, Hiroyuki Ito, Kenichi Okada, and Kazuya Masu,
    "High Frequency Characteristics of On-Chip Wirings up to 110 GHz," Advanced Metallization Conference (AMC), pp.103-104, Albany, New York, Oct. 2007
  260. Yuka Kobayashi, Kazuma Ohashi, Yusaku Ito, Hiroyuki Ito, Kenichi Okada, and Kazuya Masu,
    "A 0.49-6.50GHz Wideband LC-VCO with High-IRR in a 180nm CMOS Technology,"
    International Conference on Solid State Devices and Materials (SSDM), pp.268-269, Tsukuba, Sep. 2007.
  261. Hiroyuki Ito, Makoto Kimura, Kenichi Okada, and Kazuya Masu,
    "A 8-Gbps Low-Latency Multi-Drop On-Chip Transmission Line Interconnect with 1.2-mW Two-Way Transceivers,"
    IEEE Symposium on VLSI Circuits (VLSI Circuits), pp.136-137, Kyoto, Japan, June 2007.
  262. Hiroyuki Ito, Junki Seita, Takahiro Ishii, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "A Low-Latency and High-Power-Efficient On-Chip LVDS Transmission Line Interconnect for an RC Interconnect Alternative,"
    IEEE International Interconnect Technology Conference (IITC), pp.193-195, San Francisco, CA, June 2007.
  263. Takeshi Ito, Kenichi Okada, and Kazuya Masu,
    "Modeling of Multi-Port Inductor Considering Mutual Components,"
    IEEE Automatic RF Techniques Group Conference (ARFTG), pp.212-215, Honolulu, HI, June 2007.
  264. Wanlin Fu, Makoto Kimura, Kenichi Okada, Jun Sakai and Kazuya Masu,
    "Design of High-Density Interconnects for High-Speed Transmission,"
    IEEE Electronic Components and Technology Conference (ECTC), pp.352-356, Reno, Nevada, May 2007.
  265. Shuhei Amakawa, Takumi Uezono, Takashi Sato, Kenichi Okada, and Kazuya Masu,
    "Adaptable Wire-Length Distribution with Tunable Occupation Probability,"
    IEEE International Workshop on System Level Interconnect Prediction (SLIP), pp.1-8, Austin, Texas, March 2007.
  266. Takashi Sato, Takumi Uezono, Shiho Hagiwara, Kenichi Okada, Shuhei Amakawa, Noriaki Nakayama, and Kazuya Masu,
    "A MOS Transistor-Array for Accurate Measurement of Subthreshold Leakage Variation,"
    IEEE International Symposium on Quality Electronic Design (ISQED), pp.21-26, San Jose, CA, Mar. 2007.
  267. Yusaku Ito, Hirotaka Sugawara, Kenichi Okada, and Kazuya Masu,
    "A 0.98 to 6.6GHz Tunable Wideband VCO in a 180nm CMOS Technology for Reconfigurable Radio Transceiver," (invited)
    IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, Feb. 2007.
  268. Kazuma Ohashi, Yusaku Ito, Yoshiaki Yoshihara, Kenichi Okada, and Kazuya Masu,
    "A Wideband CMOS LC-VCO Using Variable Inductor,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), pp.98-99, Yokohama, Jan. 2007.
  269. Satoshi Fukuda, Daisuke Kawazoe, Kenichi Okada, and Kazuya Masu,
    "Reconfigurable CMOS Low Noise Amplifier Using Variable Bias Circuit for Self Compensation,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), pp.104-105, Yokohama, Jan. 2007.
  270. Junki Seita, Hiroyuki Ito, Kenichi Okada, Takashi Sato, and Kazuya Masu,
    "A Multi-Drop Transmission-Line Interconnect in Si LSI,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), pp.118-119, Yokohama, Jan. 2007.
  271. Tackya Yammouch, Kenichi Okada, and Kazuya Masu,
    "Small-Area CMOS RF Distributed Mixer Using Multi-Port Inductors,"
    IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), pp.123-126, Long Beach, CA, Jan. 2007.
  272. Jang-Gu Kim, Kenichi Okada, Tackya Yammouch, Takashi Sato, and Kazuya Masu,
    "A Left Handed Material on Si CMOS Chip with Wafer Level Package Process,"
    IEEE Asia-Pacific Microwave Conference (APMC), pp.1321-1324, Yokohama, Dec. 2006.
  273. Yuka Kobayashi, Koichi Ishida, Kenichi Okada, Yasuhiro Horiike, and Kazuya Masu,
    "A Batteryless Wireless Communication Circuit for Measurement of Gastric Acid,"
    IEEE Biomedical Circuits and Systems Conference (BioCAS), pp.5-8, London, Nov. 2006.
  274. Takahiro Ishii, Hiroyuki Ito, Makoto Kimura, Kenichi Okada, and Kazuya Masu,
    "A 6.5-mW 5-Gbps On-Chip Differential Transmission Line Interconnect with a Low-Latency Asymmetric Tx in a 180nm CMOS Technology,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), pp.131-134, Hangzhou, China, Nov. 2006.
  275. Yusaku Ito, Hirotaka Sugawara, Kenichi Okada, and Kazuya Masu,
    "A 0.98 to 6.6GHz Tunable Wideband VCO in a 180nm CMOS Technology for Reconfigurable Radio Transceiver,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), pp.359-362, Hangzhou, China, Nov. 2006.
  276. Takeshi Ito, Daisuke Kawazoe, Kenichi Okada, and Kazuya Masu,
    "A DC-7GHz Small-Area Distributed Amplifier Using 5-port Inductors in a 180nm Si CMOS Technology,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), pp.363-366, Hangzhou, China, Nov. 2006.
  277. Kenichi Okada, Hiroyuki Ito, and Kazuya Masu,
    "On-Chip Differential-Transmission-Line(DTL) Interconnect for 22nm Technology,"
    Advanced Metallization Conference (AMC), pp.3-4, San Diego, CA, Oct. 2006.
  278. Kazuya Masu, Kenichi Okada, and Hiroyuki Ito,
    "Transmission Line Interconnect on Si CMOS LSI,"(invited)
    International Conference on Solid-State and Integrated-Circuit Technology (ICSICT), pp.306-309, Shanghai, Chaina, Oct. 2006.
  279. Kenichi Okada, Hiroyuki Ito, and Kazuya Masu,
    "On-Chip Differential-Transmission-Line(DTL) Interconnect for 22nm Technology,"
    Advanced Metallization Conference, Asian Session (ADMETA), pp.124-125, Tokyo, Sep. 2006.
  280. Tackya Yammouch, Koichi Ishida, Kenichi Okada, and Kazuya Masu,
    "Equivalent Circuit Model for On-Chip Variable Inductor,"
    International Conference on Solid State Devices and Materials (SSDM), pp.58-59, Yokohama, Sep. 2006.
  281. Kazuma Ohashi, Tackya Yammouch, Makoto Kimura, Hiroyuki Ito, Kenichi Okada, Koichi Ishida, Kazuhisa Itoi, Masakazu Sato, Tatsuya Ito, and Kazuya Masu,
    "On-Chip Yagi Antenna for Wireless Signal Transmission in Stacked MCP,"
    International Conference on Solid State Devices and Materials (SSDM), pp.68-69, Yokohama, Sep. 2006.
  282. Kenichi Okada, Takumi Uezono, and Kazuya Masu,
    "Estimation of Power Reduction by On-Chip Transmission Line for 45nm Technology,"
    International Workshop on Power and Timing Modeling, Optimization and Simulation (PATMOS), pp.181-190, Montpellier, France, Sep. 2006.
  283. Daisuke Kawazoe, Hirotaka Sugawara, Takeshi Ito, Kenichi Okada, and Kazuya Masu,
    "Reconfigurable CMOS Low Noise Amplifier for Self Compensation,"
    IEEE International Symposium on Circuits and Systems (ISCAS), pp.3410-3413, Kos, Greece, May 2006.
  284. Makoto Kimura, Hiroyuki Ito, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "High-Crosstalk Robustness Transmission Line Interconnect in Si LSI using Zero-Crosstalk Structure,"
    IEEE Workshop on Signal Propagation on Interconnects (SPI), pp.153-156, Berlin-Mitte, Germany, 2006.
  285. Hiroyuki Ito, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "A Design Guideline of On-Chip Differential Transmission Line Structure for High-Frequency Signal Transmission,"
    IEEE Workshop on Signal Propagation on Interconnects (SPI), pp.217-220, Berlin-Mitte, Germany, 2006.
  286. Kenichi Okada, Takumi Uezono, and Kazuya Masu,
    "Power Reduction Using On-Chip Transmission Line for 45nm Technology,"
    The Workshop on Synthesis And System Integration of Mixed Information Technologies (SASIMI), pp.183-188, Nagoya Japan, Apr. 2006.
  287. Takumi Uezono, Kenichi Okada, and Kazuya Masu,
    "Yield Estimation Considering Via Defects,"
    The Workshop on Synthesis And System Integration of Mixed Information Technologies (SASIMI), pp.201-206, Nagoya Japan, Apr. 2006.
  288. Takumi Uezono, Kenichi Okada, and Kazuya Masu,
    "Via Distribution Model for Yield Estimation,"
    IEEE International Symposium on Quality Electronic Design (ISQED), pp.479-484, San Jose, CA, Mar. 2006.
  289. Kazuya Masu, Kenichi Okada, and Hiroyuki Ito,
    "On-chip/Off-chip High Density Transmission Line Interconnect,"(invited),
    International Conference on Electronics Packaging (ICEP), pp.398-401, Tokyo, Jan. 19-21. 2006.
  290. Kazuya Masu, Kenichi Okada, and Hiroyuki Ito,
    "On-chip Signal Transmission and Interconnect for Si CMOS LSI,"(invited)
    IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), pp.353-356, San Diego, CA, Jan. 2006.
  291. Junki Seita, Hiroyuki Ito, Hideyuki Sugita, Kenichi Okada, Tatsuya Ito, Kazuhisa Itoi, Masakazu Sato, and Kazuya Masu,
    "Distributed Constant Passive Devices Using Wafer-Level Chip Scale Package Technology for One-Chip Wireless Communication Circuits,"
    IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), pp.338-341, San Diego, CA, Jan. 2006.
  292. Kenichi Okada, Hirotaka Sugawara Daisuke Kawazoe, Yusaku Ito, and Kazuya Masu,
    "Reconfigurable RF Circuit Design for Multi-Function and Self-Compensation,"
    International Symposium on Advanced Reconfigurable Systems, Kyoto, Japan, Dec. 2005.
  293. Daisuke Kawazoe, Hirotaka Sugawara, Takeshi Ito, Kenichi Okada, and Kazuya Masu,
    "A Reconfigurable RF Circuit Architecture for Dynamic Power Reduction,"
    IEEE International Region 10 Conference (Tencon), pp.115, Melbourne, Australia, Nov. 2005.
  294. Hiroyuki Ito, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "4 Gbps On-Chip Interconnection using Differential Transmission Line,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), pp.417-420, Hsinchu, Taiwan, Nov. 2005.
  295. Yusaku Ito, Yoshiaki Yoshihara, Hirotaka Sugawara, Kenichi Okada, and Kazuya Masu,
    "A 1.3-2.8 GHz Wide Range CMOS LC-VCO Using Variable Inductor,"
    IEEE Asian Solid-State Circuits Conference (A-SSCC), pp.265-268, Hsinchu, Taiwan, Nov. 2005.
  296. Kazuhisa Itoi, Masakazu Sato, Hiroshi Abe, Takuya Aizawa, Oasmu Nakao, Takashi Takizawa, Kenichi Okada, Kazuya Masu, and Tatsuya Ito,
    "Fabrication of high-performance on-die passives based on multi-Cu-layer WLP processes,"
    International Wafer-Level Packaging Congress, San Jose, CA, Nov. 2005.
  297. Makoto Kimura, Hiroyuki Ito, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "High-Density Differential Transmission Line Bus Structure for 65nm Technology,"
    Advanced Metallization Conference, Asian Session (ADMETA), pp.56-57, Tokyo, Oct. 2005.
  298. Hirotaka Sugawara, Yoshiaki Yoshihara, Kenichi Okada, and Kazuya Masu,
    "Reconfigurable CMOS LNA for Software Defined Radio Using Variable Inductor,"
    IEEE MTT-S European Microwave Conference (EuMC), pp.1947-1950, Paris, France, Oct. 2005.
  299. Khoa Dang Pham, Kenichi Okada, and Kazuya Masu,
    "On-Chip Variable Inductor using MOSFET Switches,"
    IEEE MTT-S European Microwave Conference (EuMC), pp.1347-1350, Paris, France, Oct. 2005.
  300. Makoto Kimura, Hiroyuki Ito, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "High-Density Differential Transmission Line Bus Structure for 65nm Technology,"
    Advanced Metallization Conference (AMC), pp.26-27, Colorado Springs, CO, Sep. 2005.
  301. Tackya Yammouch, Hirotaka Sugawara, Kenichi Okada, and Kazuya Masu,
    "A Large Variable Ratio Inductor with Spider Legs Shield,"
    International Conference on Solid State Devices and Materials (SSDM), pp.652-653, Kobe, Sep. 2005.
  302. Makoto Kimura, Hiroyuki Ito, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "Zero-Crosstalk Bus Line Structure for Global Interconnects in Si ULSI,"
    International Conference on Solid State Devices and Materials (SSDM), pp.936-937, Kobe, Sep. 2005.
  303. Kazuhisa Itoi, Masakazu Sato, Kenichi Okada, Kazuya Masu, and Tatsuya Ito,
    "Comparison of compact on-chip inductors embedded in Wafer-level Package,"
    Electronic Components and Technology Conference (ECTC), pp.1578-1583, San Diego, CA, May 2005.
  304. Takanori Kyogoku, Junpei Inoue, Hidenari Nakashima, Takumi Uezono, Kenichi Okada, and Kazuya Masu,
    "Wire Length Distribution Model Considering Core Utilization for System on Chip,"
    IEEE Computer Society Annual Symposium on VLSI (ISVLSI), pp.276-277, Tampa, Florida, May 2005.
  305. Tatsuya Ito, Kazuhisa Itoi, Masakazu Sato, Hiroshi Abe, Kenichi Okada, Kazuya Masu,
    "Integration of the passive element above IC wafers by applying Wafer Level Package technology,"
    International Workshop on High Frequency Micromagnetic Devices and Materials, pp.29-30, Sendai, Japan, Apr. 2005.
  306. Hideyuki Sugita, Hiroyuki Ito, Shinichiro Gomi, Kenichi Okada, and Kazuya Masu,
    "On-Wafer Measurement of Pseudo Differential Transmission Line for Global Interconnect in Si LSI,"
    International Meeting for Future of Electron Devices (IMFEDK), Kansai, pp.35-36, Kyoto, Japan, Apr. 2005.
  307. Takumi Uezono, Junpei Inoue, Takanori Kyogoku, Kenichi Okada, and Kazuya Masu,
    "Prediction of Delay Time for Future LSI Using On-Chip Transmission Line Interconnects,"
    IEEE International Workshop on System Level Interconnect Prediction (SLIP), pp.7-12, San Francisco, CA, Apr. 2005.
  308. Junpei Inoue, Hiroyuki Ito, Shinichiro Gomi, Takanori Kyogoku, Takumi Uezono, Kenichi Okada, and Kazuya Masu,
    "Evaluation of On-Chip Transmission Line Interconnect Using Wire Length Distribution,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), pp.133-138, Shanghai, China, Jan. 2005.
  309. Kenichi Okada, Yoshiaki Yoshihara, Hirotaka Sugawara, and Kazuya Masu,
    "A Dynamic Reconfigurable RF Circuit Architecture,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), pp.683-686, Shanghai, China, Jan. 2005.
  310. Hiroyuki Ito, Junpei Inoue, Shinichiro Gomi, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "On-Chip Transmission Line for Long Global Interconnects,"
    IEEE International Electron Devices Meeting (IEDM), pp.677-680, San Francisco, CA, Dec. 2004.
  311. Hiroyuki Ito, Shinichiro Gomi, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "High Density Bus Line Structure With Pseudo Differential Transmission Line in Si ULSI,"
    IEEE Asia-Pacific Microwave Conference (APMC), p.175, Delhi, India, Dec. 2004.
  312. Hirotaka Sugawara, Kenichi Okada, and Kazuya Masu,
    "Small Area Inductor for Silicon CMOS Chip,"
    IEEE Asia-Pacific Microwave Conference (APMC), p.255, Delhi, India, Dec. 2004.
  313. Junpei Inoue, Hidenari Nakashima, Takanori Kyogoku, Takumi Uezono, Kenichi Okada, and Kazuya Masu,
    "Optimization Methodology of Global Interconnect Structure,"
    International Conference on Microelectronics (ICM), pp.351-354, Tunis, Tunisia, Dec. 2004.
  314. Shinichiro Gomi, Kohichi Nakamura, Hiroyuki Ito, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "High Speed and Low Power On-Chip Micro Network Circuit with Differential Transmission Line,"
    IEEE International Symposium on System-on-Chip, pp.173-176, Tampere, Finland, Nov. 2004.
  315. Hideyuki Sugita, Hiroyuki Ito, Shinichiro Gomi, Kenichi Okada, and Kazuya Masu,
    "Pseudo Differential Transmission Line Structure on Si ULSI,"
    Advanced Metallization Conference (AMC), pp.126-127, San Diego, CA, Oct. 2004.
  316. Takanori Kyogoku, Hidenari Nakashima, Junpei Inoue, Naohiro Takagi, Hiyouko Shinoki, Kenichi Okada, and Kazuya Masu,
    "Wire Length Distribution of SoC considering Macro Block Shapes,"
    The Workshop on Synthesis And System Integration of Mixed Information Technologies (SASIMI), pp.176-180, Kanazawa, Oct. 2004.
  317. Kenichi Okada, Yoshiaki Yoshihara, Hirotaka Sugawara, and Kazuya Masu,
    "Dynamic Reconfigurable RF Circuit Design,"
    The Workshop on Synthesis And System Integration of Mixed Information Technologies (SASIMI), pp.451-457, Kanazawa, Oct. 2004.
  318. Hirotaka Sugawara, Yoshiaki Yoshihara, Hiroyuki Ito, Kenichi Okada, and Kazuya Masu,
    "Wide-Range RF Variable Inductor on Si CMOS Chip with MEMS Actuator,"
    IEEE European Microwave Conference (EuMC), pp.701-704, Amsterdam, Netherlands, Oct. 2004.
  319. Shinichiro Gomi, Kohichi Nakamura, Hiroyuki Ito, Kenichi Okada, and Kazuya Masu,
    "Differential Transmission Line Interconnect for High Speed and Low Power Global Wiring,"
    IEEE Custom Integrated Circuits Conference (CICC), pp.325-328, Orlando, Florida, Oct. 2004.
  320. Hideyuki Sugita, Hiroyuki Ito, Shinichiro Gomi, Kenichi Okada, and Kazuya Masu,
    "Pseudo Differential Transmission Line Structure on Si ULSI,"
    Advanced Metallization Conference Asian Session (ADMETA), pp.126-127, Tokyo, Sep. 2004.
  321. Masakazu Sato, Kazuhisa Itoi, Hiroshi Abe, Hirotaka Sugawara, Hiroyuki Ito, Kenichi Okada, Kazuya Masu, and Tatsuya Ito,
    "On-chip Spiral Inductors Integrated with Wafer-Level Package,"
    International Conference on Solid State Devices and Materials (SSDM), pp.286-287, Tokyo, Sep. 2004.
  322. Hirotaka Sugawara, Kenichi Okada, and Kazuya Masu,
    "Small Area Snake Inductor on Si RF CMOS Chip,"
    International Conference on Solid State Devices and Materials (SSDM), pp.288-289, Tokyo, Sep. 2004.
  323. Hiroyuki Ito, Shinichiro Gomi, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "Twisted Differential Transmission Line Structure for EMI Noise Reduction at Global Interconnect in Si LSI,"
    International Conference on Solid State Devices and Materials (SSDM), pp.290-291, Tokyo, Sep. 2004.
  324. Shinichiro Gomi, Kohichi Nakamura, Hiroyuki Ito, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "High-Speed Transmission Circuit for Micro-Network on Si ULSI,"
    International Conference on Solid State Devices and Materials (SSDM), pp.308-309, Tokyo, Sep. 2004.
  325. Kenichi Okada, Tomohiro Yamada, Takumi Uezono, Kazuya Masu, Akio Oki, and Yasuhiro Horiike,
    "in-vivo Wireless Communication System for Bio MEMS Sensors,"
    International Conference on Solid State Devices and Materials (SSDM), pp.366-367, Tokyo, Sep. 2004.
  326. Takanori Kyogoku, Junpei Inoue, Hidenari Nakashima, Kenichi Okada, and Kazuya Masu,
    "Optimization Technique of Number of Interconnect Layers and Circuit Area Based on Wire Length Distribution,"
    International Conference on Solid State Devices and Materials (SSDM), pp.474-475, Tokyo, Sep. 2004.
  327. Hirotaka Sugawara, Hiroyuki Ito, Kenichi Okada, Kazuhisa Itoi, Masakazu Sato, Hiroshi Abe, Tatsuya Ito, and Kazuya Masu,
    "High-Q Variable Inductor Using Redistributed Layers for Si RF Circuits,"
    IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), pp.187-190, Atlanta, Georgia, USA, Sep. 2004.
  328. Yoshiaki Yoshihara, Hirotaka Sugawara, Hiroyuki Ito, Kenichi Okada, and Kazuya Masu,
    "A Wide Tuning Range CMOS VCO using Variable Inductor,"
    IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), pp.278-281, Atlanta, Georgia, USA, Sep. 2004.
  329. Tomohiro Yamada, Hirotaka Sugawara, Kenichi Okada, Kazuya Masu, Akio Oki, and Yasuhiro Horiike,
    "Battery-less Wireless Communication System through Human Body for in-vivo Healthcare Chip,"
    IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), pp.322-325, Atlanta, Georgia, USA, Sep. 2004.
  330. Shinichiro Gomi, Kohichi Nakamura, Hiroyuki Ito, Kenichi Okada, and Kazuya Masu,
    "High Speed and Low Power Global Interconnect IP with Differential Transmission Line and Driver-Receiver Circuits,"
    IEEE Asia-Pacific Conference on Advanced System Integrated Circuits (AP-ASIC), pp.384-387, Hakata, Aug. 2004.
  331. Hiroyuki Ito, Shinichiro Gomi, Hideyuki Sugita, Kenichi Okada, and Kazuya Masu,
    "Differential Transmission Line Structure for Over 10 Gbps Signal Transmission at Global Interconnect in Si ULSI,"
    IEEE Asia-Pacific Conference on Advanced System Integrated Circuits, Designer Forum (AP-ASIC), pp.414-415, Hakata, Aug. 2004.
  332. Yoshiaki Yoshihara, Hirotaka Sugawara, Hiroyuki Ito, Kenichi Okada, and Kazuya Masu,
    "Reconfigurable RF Circuit Design for Multi-band Wireless Chip,"
    IEEE Asia-Pacific Conference on Advanced System Integrated Circuits, Designer Forum (AP-ASIC), pp.418-419, Hakata, Aug. 2004.
  333. Kenichi Okada, Tomohiro Yamada, Takumi Uezono, Kazuya Masu, Akio Oki, and Yasuhiro Horiike,
    "Near Field Communication Chip using PIM for Bio Sensor,"
    IEEE Asia-Pacific Conference on Advanced System Integrated Circuits, Designer Forum (AP-ASIC), pp.440-441, Hakata, Aug. 2004.
  334. Kazuhisa Itoi, Masakazu Sato, Hiroshi Abe, Hiroyuki Ito, Hirotaka Sugawara, Kenichi Okada, Kazuya Masu, and Tatsuya Ito,
    "On-chip High-Q Solenoid Inductors Embedded in WL-CSP,"
    IEEE Conference on High Density Microsystem Design and Packaging and Component Failure Analysis, pp.105-108, Atlanta, Georgia, USA, June 2004.
  335. Kazuhisa Itoi, Masakazu Sato, Hiroshi Abe, Hirotaka Sugawara, Hiroyuki Ito, Kenichi Okada, Kazuya Masu, and Tatsuya Ito,
    "On-Chip High-Q Cu Inductors Embedded In Wafer-Level Chip-Scale Package for Silicon RF Application,"
    IEEE MTT-S International Microwave Symposium (IMS), pp.197-200, Texas, USA, June 2004.
  336. Kenichi Okada, Hiroaki Hoshino, and Hidetoshi Onodera,
    "Modeling and Optimization of On-Chip Spiral Inductors in S-parameter Domain,"
    IEEE International Symposium on Circuits and Systems (ISCAS), Vol.V, pp.153-156, Vancouver, Canada, May 2004.
  337. Yoshiaki Yoshihara, Hirotaka Sugawara, Hiroyuki Ito, Kenichi Okada, and Kazuya Masu,
    "Wide Tunable LC-VCO using Variable Inductor,"
    IEEE Workshop on Wireless Circuits and Systems (WoWCAS), pp.29-30, Vancouver, Canada, May 2004.
  338. Tomohiro Yamada, Kenichi Okada, Kazuya Masu, Akio Oki, and Yasuhiro Horiike,
    "Battery-less Wireless Communication System Using PIM for in-vivo Healthcare Chip,"
    IEEE Workshop on Wireless Circuits and Systems (WoWCAS), pp.31-32, Vancouver, Canada, May 2004.
  339. Hidenari Nakashima, Junpei Inoue, Kenichi Okada, and Kazuya Masu,
    "ULSI Interconnect Length Distribution Model Considering Core Utilization,"
    IEEE Design Automation and Test in Europe (DATE), No.2, pp.1210-1215, Paris, France, Feb. 2004.
  340. Kenichi Okada, and Hidetoshi Onodera,
    "Extraction and Verification Methodology for MOS Transistor Fluctuation with Intra-chip and Inter-chip Variabilities,"
    International Workshop on Compact Modeling (IWCM), pp.42-44, Yokohama, Jan. 2004.
  341. Hirotaka Sugawara, Hiroyuki Ito, Kenichi Okada, and Kazuya Masu,
    "Modeling for Variable RF Inductor on Si CMOS Chip,"
    International Workshop on Compact Modeling (IWCM), pp.24-28, Yokohama, Jan. 2004.
  342. Kenichi Okada, Kento Yamaoka, and Hidetoshi Onodera,
    "A Statistical Gate-Delay Model Considering Intra-Gate Variability,"
    IEEE/ACM International Conference on Computer Aided Design (ICCAD), pp.908-913, San Jose, CA, Nov. 2003.
  343. Hiroyuki Ito, Kenichi Okada, and Kazuya Masu,
    "Low Crosstalk Bus Line Configuration Using Differential Transmission Line Interconnect on Si ULSI,"
    IEEE Asia-Pacific Microwave Conference (APMC), No.2, pp.1006-1009, Seoul, Korea, Nov. 2003.
  344. Kenichi Okada, Hiroaki Hoshino, and Hidetoshi Onodera,
    "Design Optimization Methodology for On-Chip Spiral Inductors in S-parameter Domain,"
    International SOC Design Conference, p.29, Seoul, Korea, Nov. 2003.
  345. Hiroyuki Ito, Shinichiro Gomi, Hirotaka Sugawara, Kenichi Okada, and Kazuya Masu,
    "Low Crosstalk Differential Transmission Line Interconnect on Si ULSI,"
    Advanced Metallization Conference (AMC), pp.9-10, Montreal, Canada, Oct. 2003.
  346. Hiroyuki Ito, Shinichiro Gomi, Hirotaka Sugawara, Kenichi Okada, and Kazuya Masu,
    "Low Crosstalk Differential Transmission Line Interconnect on Si ULSI,"
    Advanced Metallization Conference, Asian Session (ADMETA), pp.56-57, Tokyo, Sep. 2003.
  347. Shinichiro Gomi, Yoshisato Yokoyama, Hirotaka Sugawara, Hiroyuki Ito, Kenichi Okada, Hiroaki Hoshino, Hidetoshi Onodera, and Kazuya Masu,
    "Variable RF Inductor on Si CMOS Chip,"
    International Conference on Solid State Devices and Materials (SSDM), pp.398-399, Tokyo, Sep. 2003.
  348. Tomohiro Yamada, Hisashi Uesugi, Kenichi Okada, Kazuya Masu, Hiroyuki Nakase, Kazuo Tsubouchi, Akio Oki, and Yasuhiro Horiike,
    "Preliminary Measurements for in-vivo Wireless Communication Chip,"
    International Conference on Solid State Devices and Materials (SSDM), pp.366-367, Tokyo, Sep. 2003.
  349. Kenichi Okada, Kento Yamaoka, and Hidetoshi Onodera,
    "Statistical Modeling of Gate-delay Variation with Consideration of Intra-gate Variability,"
    IEEE International Symposium on Circuits and Systems (ISCAS), Vol.V, pp.513-516, Bangkok, Tailand, May 2003.
  350. Kenichi Okada, Kento Yamaoka, and Hidetoshi Onodera,
    "Statistical Gate-delay Modeling with Intra-gate Variability,"
    The Workshop on Synthesis And System Integration of Mixed Information Technologies (SASIMI), pp.102-108, Hiroshima, Apr. 2003.
  351. Hiroaki Hoshino, Kenichi Okada, and Hidetoshi Onodera,
    "Design Optimization Methodology of Spiral Inductors on Silicon,"
    The Workshop on Synthesis And System Integration of Mixed Information Technologies (SASIMI), pp.69-75, Hiroshima, Apr. 2003.
  352. Kenichi Okada, Kento Yamaoka, and Hidetoshi Onodera,
    "A Statistical Gate Delay Model for Intra-chip and Inter-chip Variabilities,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), pp.31-36, Kitakyushu, January 2003.
  353. Kenichi Okada, and Hidetoshi Onodera,
    "Statistical Modeling of Device Characteristics with Systematic Fluctuation,"
    IEEE International Symposium on Circuits and Systems (ISCAS), Vol.2, pp.437-440, Geneva, Switzerland, May 2000.
  354. Tomohiro Fujita, Ken-ichi Okada, Hiroaki Fujita, Hidetoshi Onodera, and Keikichi Tamaru,
    "A Method for Linking Process-level Variability to System Performances,"
    IEEE/ACM Asia South Pacific Design Automation Conference (ASP-DAC), pp.547-551, Yokohama, January 2000.