Noise analysis in devices under nonlinear operation

This paper describes various aspects of noise modeling in devices under non linear operation. After a presentation of the parameters required to comple tely model the noise performance in a nonlinear device, a generalization of the impedance field method is proposed for the calculation of the macrosco pic noise sources. High frequency and then low frequency microscopic noise processes are considered. It is shown that the impedance field method is fo rmulated differently for these two noise processes. (C) 1998 Elsevier Scien ce Ltd. All rights reserved.