A Linear-Centric Modeling Approach to Harmonic Balance Analysis

In this paper we propose a new harmonic balance simulation methodology based on a linear-centric modeling approach. A linear circuit representation of the nonlinear devices and associated parasitics is used along with corresponding time and frequency domain inputs to solve for the nonlinear steady-state response via successive chord (SC) iterations. For our circuit examples this approach is shown to be up to 60x more run-time efficient than traditional NewtonRaphson (N-R) based iterative methods, while providing the same level of accuracy. This SC-based approach converges as reliably as the N-R approaches, including for circuit problems which cause alternative relaxation-based harmonic balance approaches to fail[1][2]. The efficacy of this linear-centric methodology further improves with increasing model complexity, the inclusion of interconnect parasitics and other analyses that are otherwise difficult with traditional nonlinear models.

• Type: Conference
• Year: 2002
• Where: DATE
• Authors: Peng Li, Lawrence T. Pileggi
• Keywords: DATE 2002, Hardware, Harmonic Balance, Harmonic Balance Simulation, Nonlinear Steady-state Response