Impedance Matching in High-Power Resonant-Tunneling-Diode Terahertz Oscillators Integrated with Rectangular-Cavity Resonator. - Feifan Han; Kazunori Kobayashi; Safumi Suzuki; Hiroki Tanaka; Hidenari Fujikata; Masahiro Asada (IEICE Trans. Electron., 2021)