A 4-mm-Square Miniaturized Doherty Power Amplifier Module for W-CDMA Mobile Terminals. - Takayuki Kato; Keiichi Yamaguchi; Yasuhiko Kuriyama; Hiroshi Yoshida (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

An HPSK/OFDM 64-QAM Dual-Mode Doherty Power Amplifier Module for Mobile Terminals. - Takayuki Kato; Keiichi Yamaguchi; Yasuhiko Kuriyama; Hiroshi Yoshida (IEICE Trans. Electron., 2007)

Simplified Temperature Compensation Technique for Digital Predistorter Using Fixed Coefficients. - Toshihiro Tango; Atsushi Yamaoka; Keiichi Yamaguchi; Yasuhiko Tanabe (VTC Fall, 2010)

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 A. Morris; Gavin T. Watkins (IEICE Trans. Electron., 2012)

On the Detection Mode of Spectrum Analyzers in the Measurement of OFDM Out-of-Band Distortion. - Makoto Tanahashi; Yoshimasa Egashira; Keiichi Yamaguchi; Yasuhiko Tanabe (VTC Fall, 2013)

Uncertainty of Out-of-Band Distortion Measurement With a Spectrum Analyzer. - Makoto Tanahashi; Keiichi Yamaguchi (IEEE Trans. Broadcast., 2015)

A Study on Highly Efficient Dual-Input Power Amplifiers for Large PAPR Signals. - Atsushi Yamaoka; Thomas M. Hone; Yoshimasa Egashira; Keiichi Yamaguchi (IEICE Trans. Electron., 2021)