Efficient modeling and simulation of coupled transmission lines

We present a computationally efficient method to simulate transmission lines. Based on the generalized method of characteristics, transmission lines are modeled with characteristic impedances and waveform generators. Thus the first major task involves network synthesis. The second is efficient computation of the synthesized waveform generators which requires computationally expensive convolution integral evaluation during transient simulation of transmission lines. As solutions of the above tasks, we present iterative linear least square fitting (ILLSF) for the first task and PRC for the second. The superior performance of ILLSF and the efficiency of PRC will be demonstrated for the transient simulation of coupled transmission lines.