The modem for ultra-wideband communication employing surface-acoustic-wave devices. - H. Nagasaka; T. Sato; Tsuyoshi Sugiura; Eiichiro Otobe; M. Hasegawa; Koki Tanji; Norihisa Otani; Tsuyoshi Shimamori (ISCAS (4), 2005)

A 5-GHz Band WLAN SiGe HBT Power Amplifier IC with Novel Adaptive-Linearizing CMOS Bias Circuit. - Xin Yang; Tsuyoshi Sugiura; Norihisa Otani; Tadamasa Murakami; Eiichiro Otobe; Toshihiko Yoshimasu (IEICE Trans. Electron., 2015)

High Efficiency Class-E and Compact Doherty Power Amplifiers with Novel Harmonics Termination for Handset Applications. - Tsuyoshi Sugiura; Satoshi Furuta; Tadamasa Murakami; Koki Tanji; Norihisa Otani; Toshihiko Yoshimasu (IEICE Trans. Electron., 2019)