Nonlinear Analysis of Microwave Limiter Using Field-Circuit Coupling Algorithm Based on Time-Domain Volume-Surface Integral Method

This letter presents the nonlinear analysis of the physical characteristic of a microwave positive intrinsic-negative diode limiter using the field-circuit coupling algorithm based on a time-domain volume-surface integral equation method. In order to accelerate the Newton iteration solution of the nonlinear field-circuit coupling equations, an improved solution scheme of a matrix equation is used here. Moreover, the basic diode charge-control model employed contains both a forward and reverse process as well as emitter recombination. Experimental and numerical results are given to demonstrate the accuracy and the efficiency of the proposed method for the nonlinear analysis of commercial limiter.