Large-signal HEMT modelling, specifically optimized for InP based HEMTs

Abstract

InP based HEMTs are the optimum choice for high-performant, low-noise microwave and especially millimetre wave MMICs. Regarding the stringent small-size requirement of future telecommunications systems, it is mandatory to extend the functionality to non-linear circuits. This clarifies why recently much attention is paid to non-linear HEMT modelling. The existing non-linear HEMT models, however, are elaborated for HEMTs in general and do not address explicitly the specific properties appropriate to InP based HEMTs. This paper summarizes the problem areas inherent to InP based HEMTs that are encountered with the most common non-linear model generation procedure. Adequate solutions to overcome these problems are successfully implemented in a large-signal table based model.