Simulation and sensitivity analysis of transmission line circuits by the characteristic method

Jun Fa Mao, Janet Meiling Wang, Ernest S. Kuh

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations


In this paper we use the method of characteristics to derive a new simulation model of lossy transmission lines, and we present the sensitivity analysis in the time-domain. The simulation model is as fast as the recursive convolution model based on moment matching and Pade approximation, but does not have the stability problem. The sensitivity analysis model is particularly useful for transmission line circuits containing nonlinear elements, and is believed to be the first time-domain model. Also we show that any nonlinear circuit element has a very simple linear model in sensitivity analysis. Furthermore, we demonstrate that for any circuits, the modified nodal admittance (MNA) matrices in simulation and in sensitivity analysis are the same, therefore no LU decomposition is needed in sensitivity analysis. The contributions in this paper have been implemented into a general-purpose program CSSC which shows excellent accuracy and efficiency in both simulation and sensitivity analysis of transmission line circuits.

Original languageEnglish (US)
Pages (from-to)556-562
Number of pages7
JournalIEEE/ACM International Conference on Computer-Aided Design, Digest of Technical Papers
StatePublished - 1996
EventProceedings of the 1996 IEEE/ACM International Conference on Computer-Aided Design - San Jose, CA, USA
Duration: Nov 10 1996Nov 14 1996

ASJC Scopus subject areas

  • Software
  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design


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