Temperature dependence of high-frequency performances of AlGaN/GaN HEMTs

被引:0
|
作者
Akita, M [1 ]
Kishimoto, K [1 ]
Mizutani, T [1 ]
机构
[1] Nagoya Univ, Dept Quantum Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan
来源
关键词
D O I
10.1002/1521-396X(200111)188:1<207::AID-PSSA207>3.0.CO;2-X
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
High-frequency measurements of AlGaN/GaN HEMTs (high electron mobility transistors) with 1.3 mum long gate have been performed at temperatures between 23 and 187 degreesC. The cut-off frequency f(T) decreased monotonically with increasing temperature. It was 13.7 and 8.7 GHz at 23 and 187 degreesC, respectively. The effective electron velocities v(eff) in the channel, evaluated from the relation of total delay time versus the I-D-inverse, were 1.2 x 10(7) and 0.8 x 10(7) cm/s at 23 and 187 degreesC respectively. It has been shown that the present device is in an intermediate state between mobility-dominant and peak-velocity-dominant operations.
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页码:207 / 211
页数:5
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