Integrated deterministic and stochastic simulation of electronic circuits: Application to large signal–noise analysis

Abstract

SUMMARYThe ability to model the effect of non-negligible levels of white noise superimposed on a carrier is investigated when this signal-noise combination is fed to the input of an MMIC power amplifier. Transient simulation using stochastic differential equations is introduced here to handle large levels of noise of arbitrary frequency characteristics. The effectiveness of the modelling is ascertained by looking at measured gain-compression plots at the output of the amplifier and comparing these with simulated results. It is found that increasing levels of noise introduce increased compression of the output power characteristic.