Novel Band-Reconfigurable High Efficiency Power Amplifier Employing RF-MEMS Switches. - Atsushi Fukuda; Hiroshi Okazaki; Tetsuo Hirota; Yasushi Yamao (IEICE Trans. Electron., 2005)

Multi-Port Amplifier with Enhanced Linearity and Isolation Employing Feed-Forward Techniques. - Yasunori Suzuki; Tetsuo Hirota; Toshio Nojima (IEICE Trans. Electron., 2022)