Fast and Stable Time-Domain Simulation Based on Modified Numerical Inversion of the Laplace Transform

摘要

This article presents a new algorithm for timedomain circuit simulation based on numerical inversion of Laplace transform (NILT). The proposed method, labeled NILTn, shows that for the same computational cost of the conventional NILT, referred to as NILT0, the approximation error is reduced by a significant factor, permitting time-marching with much larger time steps and, consequently, saving significant computational cast per time step. Numerical experiments are presented to demonstrate the efficiency and accuracy of the proposed approach.