Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Kenji Harauchi"'
Autor:
Kenji Harauchi, Miyo Miyashita, Takumi Sugitani, Takaaki Yoshioka, Kazuya Yamamoto, Seiki Goto, Maehara Hiroaki, Hiroaki Ichinohe, Takashi Yamasaki
Publikováno v:
IEEE Journal of Solid-State Circuits. 56:2635-2646
This study describes the Ku -band 70- and 30-W-class internally matched gallium nitride (GaN) power amplifiers (PAs) for multi-carrier satellite communications (SatComs). The GaN PAs maintain low third-order intermodulation distortion (IMD3) over a w
Autor:
Kouhei Hayashino, Yuichi Iwasaki, Kenji Harauchi, Yasuo Ohno, Tatsuaki Shioiri, Kazuhito Fukui, Jin-Ping Ao
Publikováno v:
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications.
Effects of wetting on wireless power transmission by an open-ring resonator coupling (ECOR) were investigated. Using sheets of paper wetted with deionized, tap, and sea waters as intervening materials, s-parameters were measured between two open-ring
Autor:
Kouhei Hayashino, Yasuo Ohno, Taro Takeuchi, Yuichi Iwasaki, Jin-Ping Ao, Kenji Harauchi, Kazuhito Fukui
Publikováno v:
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications.
Reduction of ON resistance and OFF capacitance of GaN microwave rectifying diode is realized by applying T-shaped anode wiring together with increase of donor concentration in the active layer. The time constant defined by the product of ON resistanc
Publikováno v:
2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications.
Comparing circuit simulation results, an analytical model for the efficiency of single shunt rectenna circuits is developed. The model estimates the DC output power and loss power in rectenna circuits and gives good agreements with circuit simulation
Autor:
Naoki Shinohara, Mami Abe, Hiroshi Tonomura, Kenji Harauchi, Yasuo Ohno, Jin-Ping Ao, Yuichi Iwasaki
Publikováno v:
2011 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications.
Open-ring resonator coupling is used for the wireless power transmission through 1.6mm thick epoxy-glass plate. Microwave signal is emitted from one circuit board where an open-ring resonator is placed and the signal is received by another board with