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Kazuya YAMAMOTO

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: 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),
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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: 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,
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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,
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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,
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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,
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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,
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3.5-GHz-Band Low-Bias-Current Operation 0/20-dB Step Linearized Attenuators Using GaAs-HBT Compatible, AC-Coupled, Stack Type Base-Collector Diode Switch Topology Kazuya YAMAMOTO Miyo MIYASHITA Nobuyuki OGAWA Takeshi MIURA Teruyuki SHIMURA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2007/07/01 Vol. E90-C No. 7 pp. 1515-1523 Type of Manuscript: PAPER Category: Microwaves, Millimeter-Waves Keyword: wireless LAN, attenuator, diodes, heterojunction bipolar transistors (HBTs), linearity, intermodulation distortion, linearization, monolithic microwave integrated circuit (MMIC),
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A GSM/EDGE Dual-Mode, Triple-Band InGaP HBT MMIC Power Amplifier Module Teruyuki SHIMURA Tomoyuki ASADA Satoshi SUZUKI Takeshi MIURA Jun OTSUJI Ryo HATTORI Yukio MIYAZAKI Kazuya YAMAMOTO Akira INOUE
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2005/07/01 Vol. E88-C No. 7 pp. 1495-1501 Type of Manuscript: PAPER Category: Microwaves, Millimeter-Waves Keyword: GSM/EDGE dual mode, power amplifier module, InGaP HBT, diode switch, Rx-noise,
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Direct Measurement of the Maximum Operating Region in AlGaAs HBTs for RF Power Amplifiers Akira INOUE Shigenori NAKATSUKA Satoshi SUZUKI Kazuya YAMAMOTO Teruyuki SHIMURA Ryo HATTORI Yasuo MITSUI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2003/08/01 Vol. E86-C No. 8 pp. 1451-1457 Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology) Category: Keyword: maximum operating region, measurement, waveform, power amplifier, HBT,
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2.4-GHz-Band CMOS RF Front-End Building Blocks at a 1.8-V Supply Hiroshi KOMURASAKI Kazuya YAMAMOTO Hideyuki WAKADA Tetsuya HEIMA Akihiko FURUKAWA Hisayasu SATO Takahiro MIKI Naoyuki KATO Akira HYOGO Keitaro SEKINE
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2002/02/01 Vol. E85-A No. 2 pp. 300-308 Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics) Category: Keyword: CMOS, low voltage, RF, S band, front end,
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Design and Experimental Results of CMOS Low-Noise/Driver MMIC Amplifiers for Use in 2.4-GHz and 5.2-GHz Wireless Communications Kazuya YAMAMOTO Tetsuya HEIMA Akihiko FURUKAWA Masayoshi ONO Yasushi HASHIZUME Hiroshi KOMURASAKI Hisayasu SATO Naoyuki KATO
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2002/02/01 Vol. E85-C No. 2 pp. 400-407 Type of Manuscript: PAPER Category: Microwaves, Millimeter-Waves Keyword: Si-bulk CMOS, MMIC, 2.4 GHz, 5.2-GHz, low-noise/driver amplifier,
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A Sub 1-V L-Band Low Noise Amplifier in SOI CMOS Hiroshi KOMURASAKI Hisayasu SATO Kazuya YAMAMOTO Kimio UEDA Shigenobu MAEDA Yasuo YAMAGUCHI Nagisa SASAKI Takahiro MIKI Yasutaka HORIBA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2000/02/25 Vol. E83-A No. 2 pp. 220-227 Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics) Category: Keyword: SOI CMOS, low noise amplifier, L band, low voltage, RF,
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Analyses on Monolithic InP HEMT Resistive Mixer Operating under Very Low LO Power Takuo KASHIWA Kazuya YAMAMOTO Takayuki KATOH Takao ISHIDA Takahide ISHIKAWA Yasuo MITSUI Yoshikazu NAKAYAMA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1999/10/25 Vol. E82-C No. 10 pp. 1831-1838 Type of Manuscript: PAPER Category: Electronic Circuits Keyword: resistive mixer, LO power, conversion loss, InP HEMT, conductance,
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A 1. 9 GHz Single-Chip RF Front-End GaAs MMIC with Low-Distortion Cascode FET Mixer Masatoshi NAKAYAMA Kenichi HORIGUCHI Kazuya YAMAMOTO Yutaka YOSHII Shigeru SUGIYAMA Noriharu SUEMATSU Tadashi TAKAGI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1999/05/25 Vol. E82-C No. 5 pp. 717-724 Type of Manuscript: Special Section PAPER (Special Issue on Low Distortion Technology for Microwave Devices and Circuits) Category: Keyword: GaAs MMIC, single-chip front-end, mixer, cascode FET, low distortion,
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A New Broadband Buffer Circuit Technique and Its Application to a 10-Gbit/s Decision Circuit Using Production-Level 0. 5 µm GaAs MESFETs Miyo MIYASHITA Naoto ANDOH Kazuya YAMAMOTO Junichi NAKAGAWA Etsuji OMURA Masao AIGA Yoshikazu NAKAYAMA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1998/10/25 Vol. E81-C No. 10 pp. 1627-1638 Type of Manuscript: PAPER Category: Electronic Circuits Keyword: GaAs MESFET, buffer circuit, decision circuit, peaking inductor, source-follower,
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A 1. 9-GHz-Band Single-Chip GaAs T/R-MMIC Front-End Operating with a Single Voltage Supply of 2 V Kazuya YAMAMOTO Takao MORIWAKI Yutaka YOSHI Kenichiro CHOMEI Takayuki FUJII Jun OTSUJI Yukio MIYAZAKI Kazuo NISHITANI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1998/07/25 Vol. E81-C No. 7 pp. 1112-1121 Type of Manuscript: PAPER Category: Electronic Circuits Keyword: GaAs MESFET, MMIC front-end, single-chip, voltage-doubler, negative-voltage generator,
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A New GaAs Negative Voltage Generator for a Power Amplifier Applied to a Single-Chip T/R-MMIC Front-End Kazuya YAMAMOTO Kosei MAEMURA Nobuyuki KASAI Yutaka YOSHII Yukio MIYAZAKI Masatoshi NAKAYAMA Noriko OGATA Tadashi TAKAGI Mutsuyuki OTSUBO
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1996/12/25 Vol. E79-C No. 12 pp. 1741-1750 Type of Manuscript: PAPER Category: Semiconductor Materials and Devices Keyword: negative voltage generator, GaAs MESFET, power amplifire, MMIC front-end,
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Optical Filter Utilizing the Directional Coupler Composed of the K-and Ag-ion Exchange Waveguides Kiyoshi KISHIOKA Kazuya YAMAMOTO
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1996/10/25 Vol. E79-C No. 10 pp. 1405-1412 Type of Manuscript: Special Section PAPER (Special Issue on Electromagnetic Theory-Foundations and Applications) Category: Keyword: optical filter, optical device, optical (integrated) circuit, ion-exchange waveguide, directional coupler,
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