Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Manabu Yanagihara"'
Autor:
Tetsuzo Ueda, Manabu Yanagihara
Publikováno v:
The Journal of The Institute of Electrical Engineers of Japan. 139:80-83
Autor:
Manabu Yanagihara, Masaya Mannoh, Hideyuki Okita, Saichiro Kaneko, Michinobu Tsuda, Hisayoshi Matsuo, Kenichiro Tanaka, Yasuhiro Uemoto, Akihiko Nishio, Masayuki Kuroda, Keiichi Matsunaga, Masahiro Hikita, Takahiro Sato, Ayanori Ikoshi, Tatsuo Morita
Publikováno v:
IEEE Transactions on Electron Devices. 64:1026-1031
A new gate recess process technology has been successfully implemented in normally off GaN-based gate injection transistors, in order to improve the process stability. In this process, unlike the conventional gate recess process, the initial AlGaN ba
Autor:
Masahiro Hikita, Masahiro Toki, Yasuhiro Uemoto, Hiroto Yamagiwa, Ayanori Ikoshi, Kenichiro Tanaka, Kazuki Suzuki, Daijiro Arisawa, Tetsuzo Ueda, Manabu Yanagihara
Publikováno v:
IRPS
Reliability of a GaN-based Hybrid-Drain-embedded Gate Injection Transistor (HD-GIT) under continuous switching operation is investigated to extract the lifetime under a practical switching application. Switching lifetimes are deduced by varying ambie
Autor:
Kenichiro Tanaka, Tetsuzo Ueda, Tatsuo Morita, Tsuguyasu Hatsuda, Masahiro Ishida, Masahiro Toki, Masahiro Hikita, Ayanori Ikoshi, Kazuki Yokoyama, Yasuhiro Uemoto, Manabu Yanagihara
Publikováno v:
2017 IEEE International Reliability Physics Symposium (IRPS).
Reliability tests on 600V-rated GaN-based normally-off hybrid-drain-embedded Gate Injection Transistor (HD-GIT) are performed. High-temperature reverse-bias test on HD-GIT reveals that the lifetime is dependent on the leakage current before the relia
Publikováno v:
physica status solidi (a). 206:1221-1227
In this paper, recent advances in GaN-based transistors for power switching and millimeter wave communications are reviewed. These two applications are emerging in addition to the widely developed power amplifiers at microwave frequencies mainly for
Autor:
Tetsuzo Ueda, Hiroaki Ueno, Yasuhiro Uemoto, Manabu Yanagihara, Hisayoshi Matsuo, Daisuke Ueda, Hidetoshi Ishida, Tsuyoshi Tanaka, Masahiro Hikita
Publikováno v:
IEEE Transactions on Electron Devices. 54:3393-3399
We have developed a normally-off GaN-based transistor using conductivity modulation, which we call a gate injection transistor (GIT). This new device principle utilizes hole-injection from the p-AlGaN to the AlGaN/GaN heterojunction, which simultaneo
Autor:
Yasuhiro Uemoto, Kenichiro Tanaka, Satoru Takahashi, Saichiro Kaneko, Tetsuzo Ueda, Tatsuo Morita, Masahiro Hikita, Ayanori Ikoshi, Masayuki Kuroda, Hideyuki Okita, Manabu Yanagihara
Publikováno v:
2015 IEEE 27th International Symposium on Power Semiconductor Devices & IC's (ISPSD).
Current collapse at high drain voltage in a GaN-based transistor is successfully suppressed by the introduction of p-GaN region which is placed beside the drain of a Gate Injection Transistor (GIT). The additional p-GaN region enables hole injection
Autor:
Manabu Yanagihara, Inoue Kaoru, Yutaka Hirose, Masahiro Hikita, Daisuke Ueda, Tomohiro Murata, Hidetoshi Ishida, Tsuyoshi Tanaka, Takashi Egawa, Yasuhiro Uemoto
Publikováno v:
International Journal of High Speed Electronics and Systems. 16:469-477
We present results of some novel AlGaN/GaN heterojunction field-effect transistors (HFETs) specifically developed for RF front-end and power applications. To reduce the parasitic resistance, two unique techniques: selective Si doping into contact are
Autor:
Hiroaki Ueno, Yasuhiro Uemoto, Tetsuzo Ueda, Manabu Yanagihara, Yutaka Hirose, Daisuke Ueda, Masahiro Hikita, Tsuyoshi Tanaka, T. Egawa, K. Nakazawa
Publikováno v:
IEEE Transactions on Electron Devices. 52:1963-1968
We have developed a high-power AlGaN/GaN HFET fabricated on 4-in conductive Si substrate with a source-via grounding (SVG) structure. The SVG structure enables efficient chip layout and high packing density by the vertical configuration. By establish
Autor:
Hidetoshi Ishida, Daisuke Ueda, Manabu Yanagihara, Hisayoshi Matsuo, Tetsuzo Ueda, Yasuhiro Uemoto, Daisuke Shibata, Tsuyoshi Tanaka
Publikováno v:
IEEE Electron Device Letters. 29:1087-1089
A breakdown mechanism of polarized semiconductors represented by GaN-based materials is presented, based on the concept of a natural super junction, which is established by the inherent material polarization. In this concept, owing to the precise mat