新着情報

IMS 2017

IMS 2017 Workshop presentation

  1. Kenichi Okada,
    “Millimeter-wave Transceiver System Design for 5G Mobile Network,”(invited)
    IEEE MTT-S International Microwave Symposium (IMS), Honolulu, HI, June 2017. 2. 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.
    18767528_1682631245110163_2068323168401910894_n

    DSC08881

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VLSI Circuits 2017 (Wang-san)

VLSI Circuits 2017で発表しました(2件目)。送信78mW、受信22mWで動作する60GHz無線機について発表しました。
低消費電力化の可能なOOK(On-Off Keying)は振幅を0 or 1で変調しますが、0, 1, -1を組み合わせるBi-Phase OOKにより半分の帯域幅での通信が可能になりました。
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, pp. 298-299, June 2017.


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VLSI Circuits 2017 (Aravind-san)

VLSI Circuits 2017で発表しました(1件目)。
VCOの位相雑音を大幅に改善しました。1kHz離調周波数での位相雑音はフリッカ雑音の影響を大きく受けるのですが、テール電流源をパルス駆動することで性能指標FoMで8dB改善できました!
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, pp. 124-125, June 2017.

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Prof. Huei Wang

Prof. Huei Wang (National Taiwan University) visited our lab!

P1080054

He is very famous for CMOS RFIC design, but this time he gave a talk about “Harmonic Radar Development for Bee Searching”! 

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2 papers accepted in VLSI Circuits!

Two papers have been accepted for presentation in VLSI Circuits!

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10-1: A. T. Narayanan, et al.,"A Pulse-Tail-Feedback VCO Achieving FoM of 195dBc/Hz with Flicker Noise Corner of 700Hz“This paper proposes a pulse-tail-feedback technique for improving both 1/f2 and 1/f3 noises. The proposed VCO has separated tail transistors driven by inverters with rail-to-rail voltage swing. The tail transistor has an impulse shaped current waveform to improve FoM, and the flicker noise up-conversion is reduced by the switching operation. A prototype of the proposed VCO is implemented in 180nm CMOS, and the VCO achieves an FoM of 195dBc/Hz from 10kHz-10MHz offset with a flicker noise corner of 700Hz at 4.55GHz oscillation. 23-1: Y. Wang, et al.,”A 100mW 3.0 Gb/s Spectrum Efficient 60 GHz Bi-Phase OOK CMOS Transceiver“A novel high-data-rate low-power spectrum-efficient 60GHz Bi-Phase-On-Off-Keying (BPOOK) transceiver is presented for indoor short-range IoT application targeting IEEE 802.11ad/WiGig standard. By employing bi-phase encoder and doublebalanced mixer, the BPOOK transmitter spectrum is efficient to be compliant with 2-channel bonding spectrum mask. The proposed 60GHz OOK transceiver is fabricated in 65nm CMOS, achieves 3.0 Gb/s data-rate and -46 dBm sensitivity, while consuming a power of 100mW including the on-chip 60GHz synthesizer.


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Korkut Kaan Tokgoz won IEEE MTT-S Graduate Fellowship

Korkut Kaan Tokgoz won IEEE MTT-S Graduate Fellowship 2017!!

| Student | University | Country | Faculty Advisor | | ————————————————————————————————————————————————– | ——————————— | ——- | ——————— | | M. Mahdi Assefzadeh  | Rice University | USA | Prof. A. Babakhani | | Mustafa Bakr  | Graz University of Technology | Austria | Prof. W. Bosch | | Tammy Chang  | Stanford University | USA | Professor T. H. Lee | | Chandrakanth Reddy Chappidi  | Princeton University | USA | Prof. K. Sengupta | | Chen Jiang  | Cornell University | USA | Prof. E. Afshari | | Souheil Nadri  | University of Virginia | USA | Prof. R. M. Weikle | | Valentina Palazzi  | University of Perugia | Italy | Prof. P. Mezzanotte | | Ali Pourghorban Saghati  | Texas A&M University | USA | Prof. K. Entesari | | Negar Reiskarimian  | Columbia University | USA | Prof. H. Krishnaswamy | | Korkut Kaan Tokgoz  | Tokyo Institute of Technology | Japan | Prof. K. Okada |


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新入荷

五橋 Z(five)ピンク 純米大吟醸 無ろ過生原酒國権 純米吟醸 生酒


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Wanderlustでgmail風なメール転送をするためのelisp

Wanderlustでgmail風なメール転送をするためのelisp ;; 締め切りに追われている時ほどコードを書きたくなるの法則!

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    ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; gmail-style forward
    (add-hook 'wl-summary-mode-hook
    	  (lambda ()
    	  (define-key wl-summary-mode-map "F" 'my-wl-summary-forward)))

    (defun my-wl-summary-forward ()
      (interactive)
      (let ((summary-buf (current-buffer))
    	(winconf (current-window-configuration))
    	(tmp-buf (get-buffer-create " *wl-draft-edit-string*"))
    	mes-buf
    	to subject in-reply-to cc references mail-followup-to
    	content-type content-transfer-encoding from date
    	to-alist cc-alist decoder string)
        (when (wl-summary-message-number)
          (save-excursion
    	(wl-summary-set-message-buffer-or-redisplay))
          (condition-case err
    	  (when (setq mes-buf (wl-message-get-original-buffer))
    	    (setq string (wl-summary-message-string 'maybe))
    	    (set-buffer tmp-buf)
    	    (erase-buffer)
    	    (insert string)
    	    (setq to (std11-field-body "To"))
    	    (setq subject (std11-field-body "Subject"))
    	    (setq subject (and subject
    			       (eword-decode-string
    				(decode-mime-charset-string
    				 subject
    				 wl-mime-charset))))
    	    (setq from (std11-field-body "From")
    		  from (and from
    			    (eword-decode-string
    			     (decode-mime-charset-string
    			      from
    			      wl-mime-charset))))
    	    (setq cc (std11-field-body "Cc"))
    	    (setq date (std11-field-body "Date"))
    	    (setq in-reply-to (std11-field-body "Message-ID"))
    	    (setq references (nconc
    			      (std11-field-bodies '("References" "In-Reply-To"))
    			      (list in-reply-to))
    		  references (delq nil references)
    		  references (mapconcat 'identity references " ")
    		  references (wl-draft-parse-msg-id-list-string references)
    		  references (wl-delete-duplicates references)
    		  references (when references
    			       (mapconcat 'identity references "\n\t")))
    	    (setq mail-followup-to (std11-field-body "Mail-Followup-To"))
    	    (setq content-type (std11-field-body "Content-Type"))
    	    (setq content-transfer-encoding (std11-field-body "Content-Transfer-Encoding"))
    	    (goto-char (point-min))
    	    (or (re-search-forward "\n\n" nil t)
    		(search-forward (concat mail-header-separator "\n") nil t))
    	    (unwind-protect
    		(set-buffer
    		 (wl-draft (list
    			    (cons 'From
    				  (if (wl-address-user-mail-address-p from) from))
    			    (cons 'To "")
    			    (cons 'Subject (wl-draft-forward-make-subject subject))
    			    (cons 'Mail-Followup-To mail-followup-to)
    			    (cons 'In-Reply-To in-reply-to)
    			    (cons 'References references))
    			   content-type content-transfer-encoding
    			   (buffer-substring (point) (point-max))
    			   'edit-again))
    	      (kill-buffer tmp-buf))
    	    ;; Set cursor point to the top.
    	    (goto-char (point-min))
    	    (search-forward (concat mail-header-separator "\n") nil t)
    	    ;;
    	    (setq to (wl-parse-addresses to)
    		  cc (wl-parse-addresses cc))
    	    (setq to-alist
    		  (mapcar
    		   (lambda (addr)
    		     (setq decoder (mime-find-field-decoder 'To 'plain))
    		     (cons (nth 1 (std11-extract-address-components addr))
    		   (if decoder (funcall decoder addr) addr)))
    		   to))
    	    (setq cc-alist
    		  (mapcar
    		   (lambda (addr)
    		     (setq decoder (mime-find-field-decoder 'Cc 'plain))
    		     (cons (nth 1 (std11-extract-address-components addr))
    			   (if decoder (funcall decoder addr) addr)))
    		   cc))
    	    
    	    (setq to (delq nil (mapcar 'car to-alist)))
    	    (setq cc (delq nil (mapcar 'car cc-alist)))
    	    (and to (setq to (mapconcat
    			      (lambda (addr)
    				(if wl-draft-reply-use-address-with-full-name
    				    (or (cdr (assoc addr to-alist)) addr)
    				  addr))
    			      to ",\n\t")))
    	    (and cc (setq cc (mapconcat
    			      (lambda (addr)
    				(if wl-draft-reply-use-address-with-full-name
    				    (or (cdr (assoc addr cc-alist)) addr)
    				  addr))
    			      cc ",\n\t")))
    	    (wl-draft-reply-position 'body)
    	    (insert (concat
    		     "\n-------- Forwarded Message --------\n"
    		     (and from (format "From: %s\n" from))
    		     (and date (format "Date: %s\n" date))
    		     (and subject (format "Subject: %s\n" subject))
    		     (and to (format "To: %s\n" to))
    		     (and cc (format "Cc: %s\n" cc))
    		     "\n\n"))
    	    (mail-position-on-field "To")
    	    (run-hooks 'wl-draft-forward-hook)
    	    (run-hooks 'wl-mail-setup-hook))
    	(error (set-window-configuration winconf)
    	       (signal (car err) (cdr err))))
          (with-current-buffer summary-buf (run-hooks 'wl-summary-forward-hook))
          t)))

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新入荷

313号室にありますので、お好きにどうぞ!

あと、次の飲み会のために、橋和屋で  鳳凰美田 純米吟醸 赤磐雄町 1.8l  五橋Five ピンク 純米大吟醸無濾過生原酒 1.8l  菊姫 山廃純米 無濾過生原酒 1.8l 買ってきてください!

image


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4/4(火)花見開催!

4/4(火)18:10~より、洗足池でお花見やります!

OB,OGの方もお待ちしております!ご都合つく方は是非ふるってご参加ください! 連絡は折原か松下にお願い致します。

 


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