Abstract

An experimental comparative study of nonlinear distortion effects in 26-40 GHz frequency band on telecommunication MMIC’s subject to constant wave single-tone, two-tone and NPR excitations are presented in this paper. The study is performed using a wave-guide based power measurement setup previously developed and recently fully automated to allow very accurate analyses about nonlinear behaviour of PHEMT SSPA’s. The purpose of these studies is to determine the MMIC linearity performances at 29 GHz versus bias conditions. But also to improve the PHEMT technological parameters and the circuits designs as a function of the analyses.