Time-Domain Integral Equation Solver for Planar Circuits Over Layered Media Using Finite Difference Generated Green's Functions

摘要

A simple, highly accurate, and efficient 2D finite-difference technique for computing the direct convolution of time-domain Green's functions (TDGFs) of layered media with temporal interpolators is presented. The proposed TDGFs are incorporated into a recently developed marching-on-in-time (MOT)-based time-domain integral equation (TDIE) solver based on noncausal high-order B-Spline temporal interpolators without requiring the prediction of future unknowns. Numerical results demonstrating the applicability of the technique to the analysis of various microwave structures are presented.