Katsuya Kosaki
Mitsubishi
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Publication
Featured researches published by Katsuya Kosaki.
IEEE Transactions on Electron Devices | 1995
Teruyuki Shimura; Masayuki Sakai; S. Izumi; Hirofumi Nakano; H. Matsuoka; Akira Inoue; J. Udomoto; Katsuya Kosaki; T. Kuragaki; H. Takano; T. Sonoda; S. Takamiya
High power and high-efficiency multi-finger heterojunction bipolar transistors (HBTs) have been successfully realized at Ku-band by using an optimum emitter ballasting resistor and a plated heat sink (PHS) structure. Output power of 1 W with power-added efficiency (PAE) of 72% at 12 GHz has been achieved from a 10-finger HBT with the total emitter size of 300 /spl mu/m/sup 2/. 72% PAE with the output power density of 5.0 W/mm is the best performance ever reported for solid-state power devices with output powers more than 1 W at Ku-band. >
Archive | 1994
Katsuya Kosaki
Archive | 1991
Katsuya Kosaki
Archive | 1997
Masahiro Tamaki; Katsuya Kosaki
Archive | 2000
Katsuya Kosaki; Masahiro Tamaki
Archive | 1994
Katsuya Kosaki
IEEE Transactions on Electron Devices | 1994
Takahide Ishikawa; Kazuhiro Okaniwa; M. Komaru; Katsuya Kosaki; Yasuo Mitsui
Archive | 1999
Katsuya Kosaki
Archive | 1996
Katsuya Kosaki; Takeshi Kuragaki
Archive | 1997
Katsuya Kosaki; Masahiro Tamaki
