Nonlinear Modeling for MMIC´s

Nonlinear microwave CAD as applied to GaAs MMIC\´s is still in its infancy. A brief review is given of some of the work on modeling the nonlinear or "large-signal" behavior of the GaAs FET and nonlinear microwave circuit simulation. This is an important topic to the future success of GaAs MMIC\´s. Several important issues are raised with respect to nonlinear CAD for GaAs MMIC\´s.