UCSC-CRL-93-28: SCATTERING PARAMETER TRANSIENT ANALYSIS OF INTERCONNECT NETWORKS WITH NONLINEAR TERMINATIONS USING RECURSIVE CONVOLUTION

06/01/1993 09:00 AM
Computer Engineering
A novel method for analyzing interconnect networks with nonlinear terminations is presented. The circuit is partitioned into linear and nonlinear networks. A scattering parameter based macromodel is introduced to model the linear network. An efficient network reduction algorithm is developed to reduce the linear network into a network containing one multiport component (macromodel) together with sources and loads of interest. Exponentially Decayed Polynomial Functions (EDPF) are used to approximate the scattering parameters of the macromodel, which is always stable for stable circuits. In order to incorporate the macromodel into a SPICE like circuit simulator, a simplified recursive convolution formula is developed and Norton equivalent circuits are derived based on recursive convolution. Experiment results indicate that our method can approach the accuracy of SPICE3e2 with order of magnitudes less computing time.

UCSC-CRL-93-28

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