FDTD simulation of signal degradation in lossy and dispersive coplanar waveguides for high-speed digital circuits

Ao Sheng Rong, Vijai K. Tripathi, Zhong Liang Sun

Research output: Contribution to journalConference articlepeer-review

Abstract

The signal degradation stemming from the conductor loss and the substrate dispersion of coplanar waveguides for the high-speed digital circuits is analyzed by a combination of the original and frequency-dependent versions of the FDTD method. The metallic strips with the finite thickness are described by the equivalent Z-parameters. The backed conductor, if any, is modelled by the surface impedance. The dispersive property of the GaAs substrate is formulated by using the Kronig-Kramers relationship. The simulation results demonstrate the signal degradation due to modal dispersion, conductor loss, substrate dispersion and leakage effects in a conductor backed CPW structure.

Original languageEnglish (US)
Pages (from-to)1835-1838
Number of pages4
JournalIEEE MTT-S International Microwave Symposium Digest
Volume3
StatePublished - Jan 1 1996
Externally publishedYes
EventProceedings of the 1996 IEEE MTT-S International Microwave Symposium Digest. Part 1 (of 3) - San Franscisco, CA, USA
Duration: Jun 17 1996Jun 21 1996

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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