Title
Temperature effects on DC and small signal RF performance of AlGaAs/GaAs HEMTs
Abstract
We here report on the DC and microwave performance of HEMTs tested on wafer under different temperature conditions. The relevant experimental data show that the most important electrical parameters, such as the output current, the threshold voltage, the transconductance and the forward transmission coefficient, are sensibly affected by thermal phenomena. We focused our attention on the variations of the above parameters with the temperature because such a detailed knowledge is essential to establish the optimum bias point for a given application. Furthermore, we analyze the influence of the DC quiescent point degradations, due to thermal phenomena, on the small signal equivalent circuit. Since the thermal behavior of the circuit model is a function of the bias, we examine the behavior of the circuit elements vs. temperature over a wide range of bias conditions.
Year
DOI
Venue
2006
10.1016/j.microrel.2005.05.003
Microelectronics Reliability
Keywords
DocType
Volume
equivalent circuit,threshold voltage,transmission coefficient
Journal
46
Issue
ISSN
Citations 
1
0026-2714
1
PageRank 
References 
Authors
0.48
3
3
Name
Order
Citations
PageRank
A Caddemi12012.87
G. Crupi261.95
N. Donato3158.53