A 184 mW Fully Integrated DVB-H Tuner With a Linearized Variable Gain LNA and Quadrature Mixers Using Cross-Coupled Transconductor. - Kunihiko Iizuka; Hiroshi Kawamura; Takanobu Fujiwara; Kanetomo Kagoshima; Shuichi Kawama; Hiroshi Kijima; Masato Koutani; Shinji Toyoyama; Keiichi Sakuno (IEEE J. Solid State Circuits, 2007)

Highly integrated RF frontend module for high SHF wide-band massive MIMO in 5G, and switching-mode amplifiers beyond 4G. - Shintaro Shinjo; Keigo Nakatani; Jun Kamioka; Ryota Komaru; Shuichi Sakata; Takanobu Fujiwara; Hideyuki Nakamizo; Koji Yamanaka (VLSI-DAT, 2017)

A 15GHz-Band 4-Channel Transmit/Receive RF Core-Chip for High SHF Wide-Band Massive MIMO in 5G. - Koji Tsutsumi; Takaya Maruyama; Wataru Yamamoto; Takanobu Fujiwara; Tatsuya Hagiwara; Ichiro Somada; Eiji Taniguchi; Mitsuhiro Shimozawa (IEICE Trans. Electron., 2017)