A 49-GHz preamplifier with a transimpedance gain of 52 dBΩ using InP HEMTs. - Hisao Shigematsu; Masaru Sato 001; Toshihide Suzuki; Tsuyoshi Takahashi; Kenji Imanishi; Naoki Hara; Hiroaki Ohnishi; Yuu Watanaba (IEEE J. Solid State Circuits, 2001)

A 54-GHz distributed amplifier with 6-VPP output for a 40-Gb/s LiNbO3 modulator driver. - Hisao Shigematsu; Masaru Sato 001; Tatsuya Hirose; Yuu Watanabe (IEEE J. Solid State Circuits, 2002)

A 90-GHz InP-HEMT lossy match amplifier with a 20-dB gain using a broadband matching technique. - Yusuke Inoue 003; Masaru Sato 001; Toshihiro Ohki; Kozo Makiyama; Tsuyoshi Takahashi; Hisao Shigematsu; Tatsuya Hirose (IEEE J. Solid State Circuits, 2005)