Accurate multibias equivalent-circuit extraction for GaN HEMTs

被引:144
|
作者
Crupi, Giovanni [1 ]
Xiao, Dongping
Schreurs, Dominique M. M. -P.
Limiti, Ernesto
Caddemi, Alina
De Raedt, Walter
Germain, Marianne
机构
[1] Univ Roma Tor Vergata, Dept Elect Engn, I-00133 Rome, Italy
[2] Univ Messina, Dipartimento Fis Mat & Tecnol Fisiche Avanzate, I-98166 Messina, Italy
[3] Katholieke Univ Leuven, Dept Elect Engn, B-3001 Heverlee, Belgium
[4] Interuniv Microelect Ctr, B-3001 Louvain, Belgium
关键词
gallium nitride; high electron-mobility transistor (HEMT); multibias; small-signal model;
D O I
10.1109/TMTT.2006.882403
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper focuses on the determination and analysis of an accurate small-signal equivalent circuit for gallium-nitride high electron-mobility transistors under different bias conditions. Our experimental results show that a channel capacitance has to be added to the conventional forward "cold" model for modeling the device-under-test. The validity of the proposed extraction procedure has been verified by the very good agreement between simulated and measured scattering parameters up to 50 GHz.
引用
收藏
页码:3616 / 3622
页数:7
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