Noise Macromodel for Radio Frequency Integrated Circuits
DATE '03 Proceedings of the conference on Design, Automation and Test in Europe - Volume 1
Efficient harmonic balance simulation using multi-level frequency decomposition
Proceedings of the 2004 IEEE/ACM International conference on Computer-aided design
Nonlinear distortion analysis via linear-centric models
ASP-DAC '03 Proceedings of the 2003 Asia and South Pacific Design Automation Conference
MAPS: multi-algorithm parallel circuit simulation
Proceedings of the 2008 IEEE/ACM International Conference on Computer-Aided Design
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In this paper we propose a new harmonic balance simulationmethodology based on a linear-centric modeling approach.A linear circuit representation of the nonlineardevices and associated parasitics is used along with correspondingtime and frequency domain inputs to solve for thenonlinear steady-state response via successive chord (SC) iterations.For our circuit examples this approach is shown tobe up to 60x more run-time efficient than traditional Newton-Raphson(N-R) based iterative methods, while providing thesame level of accuracy. This SC-based approach convergesas reliably as the N-R approaches, including for circuitproblems which cause alternative relaxation-based harmonicbalance approaches to fail[1][2]. The efficacy of this lin-earcentric methodology further improves with increasingmodel complexity, the inclusion of interconnect parasiticsand other analyses that are otherwise difficult with traditionalnonlinear models.