A Predistortion Diode Linearizer Technique with Automatic Average Power Bias Control for a Class-F GaN HEMT Power Amplifier. - Akihiro Ando; Yoichiro Takayama; Tsuyoshi Yoshida; Ryo Ishikawa; Kazuhiko Honjo (IEICE Trans. Electron., 2011)

Bubble jumper: enhancing the traditional japanese sport sumo with physical augmentation. - Ryoichi Ando; Akihiro Ando; Kai Kunze; Kouta Minamizawa (Superhuman Sports Design Challenge, 2018)