IEICE Trans

Keiichi YAMAGUCHI

A Study on Highly Efficient Dual-Input Power Amplifiers for Large PAPR Signals Atsushi YAMAOKA Thomas M. HONE Yoshimasa EGASHIRA Keiichi YAMAGUCHI
Publication: Publication Date: 2021/10/01 Vol. E104-C No. 10 pp. 506-515 Type of Manuscript: INVITED PAPER (Special Section on Microwave and Millimeter-Wave Technologies) Category: Keyword: Doherty amplifier, outphasing amplifier, Doherty-outphasing amplifier, base stations, multiple-input amplifier,
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A Proposal for Adopting the Frequency Response of an Envelope Amplifier with Memoryless DPD EER PA Model Takayuki KATO Yoshinori KOGAMI Yuuki FUNAHASHI Atsushi YAMAOKA Keiichi YAMAGUCHI Yasuhiko TANABE Jiafeng ZHOU Kevin MORRIS Gavin T. WATKINS
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2012/07/01 Vol. E95-C No. 7 pp. 1163-1171 Type of Manuscript: Special Section PAPER (Special Section on Recent Trends of Microwave Systems and Their Fundamental Technologies) Category: Keyword: EER, power amplifier, memoryless DPD, envelope amplifier, frequency response,
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An HPSK/OFDM 64-QAM Dual-Mode Doherty Power Amplifier Module for Mobile Terminals Takayuki KATO Keiichi YAMAGUCHI Yasuhiko KURIYAMA Hiroshi YOSHIDA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2007/09/01 Vol. E90-C No. 9 pp. 1678-1684 Type of Manuscript: Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology) Category: Active Devices/Circuits Keyword: Doherty amplifier, PA module, HPSK, OFDM 64-QAM, multi-mode, mobile terminal, GaAs MMIC,
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A 4-mm-Square Miniaturized Doherty Power Amplifier Module for W-CDMA Mobile Terminals Takayuki KATO Keiichi YAMAGUCHI Yasuhiko KURIYAMA Hiroshi YOSHIDA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2007/02/01 Vol. E90-A No. 2 pp. 310-316 Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics) Category: Keyword: Doherty amplifier, PA module, W-CDMA, mobile terminal, GaAs MMIC,
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Millimeter-Wave Monolithic GaAs HEMT Medium-Power Amplifier Having Low-Loss, CRC High-Pass Equalizer Circuits Naoko ONO Ken ONODERA Kazuhiro ARAI Keiichi YAMAGUCHI Hiroyuki YOSHINAGA Yuji ISEKI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2004/05/01 Vol. E87-C No. 5 pp. 733-741 Type of Manuscript: Special Section PAPER (Special Section on Advances in Characterization and Measurement Technologies for Microwave and Millimeter-Wave Materials, Devices and Circuits) Category: Active Devices and Circuits Keyword: K-band, driver amplifier, filter circuit, HEMT,
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V-Band HEMT MMICs Using BCB Thin-Film Layers on GaAs Substrates Naoko ONO Keiichi YAMAGUCHI Minoru AMANO Masayuki SUGIURA Yuji ISEKI Eiji TAKAGI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2001/10/01 Vol. E84-C No. 10 pp. 1528-1534 Type of Manuscript: Special Section PAPER (Special Issue on Millimeter-Wave Circuits and Fabrication Technologies Opening up the 21st Century) Category: Keyword: BCB, thin-film layer, V-band, HEMT, MMIC,
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An Optimum Bias Point Study of Low Local Oscillator Power Operation for 60 GHz Drain Mixer Keiichi YAMAGUCHI Yasuhiko KURIYAMA Eiji TAKAGI Mitsuo KONNO
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1999/11/25 Vol. E82-C No. 11 pp. 1982-1991 Type of Manuscript: Special Section PAPER (Special Issue on High-Frequency/High-Speed Devices for Information and Communication Systems in the 21st Century) Category: Low Power-Consumption RF ICs Keyword: drain mixer, LO power, bias, MMIC, millimeter wave,
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I-V Characteristic of YBCO Step-Edge Josephson Junction Keiichi YAMAGUCHI Shuichi YOSHIKAWA Tsuyoshi TAKENAKA Syuichi FUJINO Kunihiko HAYASHI Tsutomu MITSUZUKA Katsumi SUZUKI Youichi ENOMOTO
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1994/08/25 Vol. E77-C No. 8 pp. 1218-1223 Type of Manuscript: Special Section PAPER (Special Section on Superconducting Devices) Category: HTS Keyword: Josephson junction, high T_c superconductor, I-V characteristics, device application,
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