Shouhei KOUSAI


A-104 dBc/Hz In-Band Phase Noise 3 GHz All Digital PLL with Phase Interpolation Based Hierarchical Time to Digital Converter
Daisuke MIYASHITA Hiroyuki KOBAYASHI Jun DEGUCHI Shouhei KOUSAI Mototsugu HAMADA Ryuichi FUJIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/06/01
Vol. E95-C  No. 6  pp. 1008-1016
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
ADPLLTDCphase interpolatorphase noise
 Summary | Full Text:PDF

A Low-Noise and Highly-Linear Transmitter with Envelope Injection Pre-Power Amplifier for Multi-Mode Radio
Shouhei KOUSAI Daisuke MIYASHITA Junji WADATSUMI Rui ITO Takahiro SEKIGUCHI Mototsugu HAMADA Kenichi OKADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/02/01
Vol. E94-A  No. 2  pp. 592-602
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
multi-mode radiowideband transmitteractive matchingenvelope injection
 Summary | Full Text:PDF

A Novel Automatic Quality Factor Tuning Scheme for a Low-Power Wideband Active-RC Filter
Shouhei KOUSAI Mototsugu HAMADA Rui ITO Tetsuro ITAKURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/02/01
Vol. E92-A  No. 2  pp. 411-420
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
active-RCLPFquality factor tuning
 Summary | Full Text:PDF

A 2.4-GHz Temperature-Compensated CMOS LC-VCO for Low Frequency Drift Low-Power Direct-Modulation GFSK Transmitters
Toru TANZAWA Kenichi AGAWA Hiroyuki SHIBAYAMA Ryota TERAUCHI Katsumi HISANO Hiroki ISHIKURO Shouhei KOUSAI Hiroyuki KOBAYASHI Hideaki MAJIMA Toru TAKAYAMA Masayuki KOIZUMI Fumitoshi HATORI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/04/01
Vol. E88-C  No. 4  pp. 490-495
Type of Manuscript:  Special Section PAPER (Special Section on Low-Power LSI and Low-Power IP)
Category: Analog
Keyword: 
GFSKCMOS LC-VCOBluetoothdirect modulationlow power
 Summary | Full Text:PDF

A Full-CMOS Single Chip Bluetooth LSI with 1.5 MHz-IF Receiver and Direct Modulation Transmitter
Fumitoshi HATORI Hiroki ISHIKURO Mototsugu HAMADA Ken-ichi AGAWA Shouhei KOUSAI Hiroyuki KOBAYASHI Duc Minh NGUYEN 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/04/01
Vol. E87-C  No. 4  pp. 556-562
Type of Manuscript:  Special Section PAPER (Special Section on Low-Power System LSI, IP and Related Technologies)
Category: 
Keyword: 
Bluetoothwireless communicationCMOS transceiverlow-IFdirect modulationlow power
 Summary | Full Text:PDF