Pole-residue formulation for transient simulation of high-speed interconnects using Householder LS curve-fitting techniques

As digital circuits approach the GHz range, and as the need for high performance wireless devices increases, new simulation tools which accurately characterize high speed interconnects are needed. In this paper, a new macromodelling algorithm for time domain simulation of interconnects is presented. The algorithm incorporates Householder LS curve-fitting techniques. The approach generates a universal macromodelling tool that enables simulation of interconnects in a modified version of SPICE. This results in a method that conveniently incorporates accurate EM models of interconnects, or experimental data into a circuit simulator. The time domain simulation results using this new tool are compared with results from other simulators.