Robust SPICE circuit generation using scattering parameters

Abstract

The generation of macromodel-based SPICE subcircuits has received widespread attention in CAD applications. Model-order reduction techniques that utilize frequency-dependent representations of packages and systems are used to obtain a simplified and more analytically tractable representation for these systems. Circuit extraction algorithms are then used to extract the equivalent circuit elements from these representations. This paper introduces two techniques for the synthesis of circuits characterized by broadband S parameters. Simulations are performed to verify the robustness and accuracy of these techniques.