Transient Simulation of Lossy and Nonuniform Multi-Conductor Transmission Lines by Time Domain Finite Element

A new method - time domain finite element (TDFF) - for the transient simulation of lossy and nonuniform multi-conductor transmission lines (MTL) is presented. The method is based on the integral transformation of the telegrapher´s equations, combined with recursive convolution method to get the discrete time and space model for frequency-dependent transmission lines. No special technique is required to ensure the stability of the method as in the case of frequency domain moment-matching methods. At last, several numerical experiments show that TDFE-based modeling leads to high accuracy as well as high efficiency.