IEICE Trans

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IEICE Trans

Hiroaki SEKI

Design and Measurements of Two-Gain-Mode GaAs-BiFET MMIC Power Amplifier Modules with Small Phase Discontinuity for WCDMA Data Communications Kazuya YAMAMOTO Miyo MIYASHITA Kenji MUKAI Shigeru FUJIWARA Satoshi SUZUKI Hiroaki SEKI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2018/01/01 Vol. E101-C No. 1 pp. 65-77 Type of Manuscript: PAPER Category: Microwaves, Millimeter-Waves Keyword: WCDMA, MMIC, step attenuator, two gain modes, directional coupler, heterojunction bipolar transistors (HBTs),
	Summary \| Full Text:PDF

Experimental Study on CDMA GaAs HBT MMIC Power Amplifier Layout Design for Reducing Turn-On Delay in Transient Response Kazuya YAMAMOTO Miyo MIYASHITA Takayuki MATSUZUKA Tomoyuki ASADA Kazunobu FUJII Satoshi SUZUKI Teruyuki SHIMURA Hiroaki SEKI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2017/06/01 Vol. E100-C No. 6 pp. 618-631 Type of Manuscript: PAPER Category: Microwaves, Millimeter-Waves Keyword: heterojunction bipolar transistors (HBTs), MMIC, CDMA, parallel-amplifier-chain topology, transient response, thermal coupling,
	Summary \| Full Text:PDF

Design and Measurements of Building Blocks Supporting a 1.9-GHz-Band BiFET MMIC Power Amplifier for WCDMA Handsets Kazuya YAMAMOTO Takayuki MATSUZUKA Miyo MIYASHITA Kenichi HORIGUCHI Shigeo YAMABE Satoshi SUZUKI Hiroaki SEKI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2016/07/01 Vol. E99-C No. 7 pp. 837-848 Type of Manuscript: PAPER Category: Microwaves, Millimeter-Waves Keyword: MMIC, reference voltage generator, ESD protection, three power modes, heterojunction bipolar transistors (HBTs), WCDMA,
	Summary \| Full Text:PDF

A Current-Mirror-Based GaAs-HBT RF Power Detector Suitable for Base Terminal Monitoring in an HBT Power Stage Kazuya YAMAMOTO Hitoshi KURUSU Miyo MIYASHTA Satoshi SUZUKI Hiroaki SEKI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2015/12/01 Vol. E98-C No. 12 pp. 1150-1160 Type of Manuscript: PAPER Category: Microwaves, Millimeter-Waves Keyword: power detector, current-mirror circuits, heterojunction bipolar transistors (HBTs), WiMAX, MMIC,
	Summary \| Full Text:PDF

0.8-/1.5-GHz-Band WCDMA HBT MMIC Power Amplifiers with an Analog Bias Control Scheme Kazuya YAMAMOTO Takayuki MATSUZUKA Miyo MIYASHITA Kenichi MAEDA Satoshi SUZUKI Hiroaki SEKI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2015/09/01 Vol. E98-C No. 9 pp. 934-945 Type of Manuscript: PAPER Category: Microwaves, Millimeter-Waves Keyword: analog bias control, emitter follower, current injection, heterojunction bipolar transistors (HBTs), WCDMA,
	Summary \| Full Text:PDF

A 3.5-GHz-Band GaAs HBT Stage-Bypass-Type Step-Gain Amplifier Using Base-Collector Diode Switches and Its Application to a WiMAX HBT MMIC Power Amplifier Module Kazuya YAMAMOTO Miyo MIYASHITA Hitoshi KURUSU Yoshinobu SASAKI Satoshi SUZUKI Hiroaki SEKI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2015/07/01 Vol. E98-C No. 7 pp. 716-728 Type of Manuscript: PAPER Category: Microwaves, Millimeter-Waves Keyword: step gain control, diode switches, heterojunction bipolar transistors (HBTs), WiMAX, MMIC,
	Summary \| Full Text:PDF

A Low Quiescent Current CV/CC Parallel Operation HBT Power Amplifier for W-CDMA Terminals Shintaro SHINJO Kazutomi MORI Hiro-omi UEDA Akira OHTA Hiroaki SEKI Noriharu SUEMATSU Tadashi TAKAGI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2003/08/01 Vol. E86-C No. 8 pp. 1444-1450 Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology) Category: Keyword: microwave, power amplifier, heterojunction bipolar transistor (HBT), inductor base feed, resistor base feed,
	Summary \| Full Text:PDF