New empirical unified dispersion model for shielded-, suspended-, and composite-substrate microstrip line for microwave and mm-wave applications

A. K. Verma*

*Corresponding author for this work

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

By introducing the concept of "virtual relative permittivity," this paper reports several closed-form dispersion models for a multilayered shielded/unshielded microstrip line over 1 < εr < 20, 0.1 < (w/h) < 10, (h3/h) > 2 in the frequency range up to 4 GHz · cm. The maximum deviation of the one model against the results of the spectraldomain analysis (SDA) is limited to 3%, while for the other three models, the maximum deviation is <2% and the root-mean-square (rms) deviation is <0.8%. This paper also reports improvement in the closed-form model of March for the determination of eff(0) of the shielded microstrip line.

Original languageEnglish
Pages (from-to)1187-1192
Number of pages6
JournalIEEE Transactions on Microwave Theory and Techniques
Volume46
Issue number8
DOIs
Publication statusPublished - 1998
Externally publishedYes

Keywords

  • Dispersion
  • Multilayer microstrip

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