학술논문
Large-signal PHEMT switch model, which accurately predicts harmonics and two-tone inter-modulation distortion
Document Type
Conference
Author
Source
IEEE MTT-S International Microwave Symposium Digest, 2005. Microwave Symposium Microwave Symposium Digest, 2005 IEEE MTT-S International. :1155-1158 2005
Subject
Language
ISSN
0149-645X
Abstract
In this paper we present a comprehensive large-signal PHEMT switch model and address critical switch modeling issues. Reciprocity, dispersion, leakages, and sub-pinchoff, and charge conservation all play important role in generating a realistic large-signal switch model. Device nonlinearities covering linear, saturation, sub-pinchoff and deep pinchoff regions are taken into account in the model. The model has been verified by comparing simulated dc characteristics, S-parameters and power harmonics performance of switch devices with measured results. The model also successfully predicts harmonics, two-tone IP3 and cross-modulation in various switch circuits.