Closed-form expressions for accurate determination of capacitance and effective radius of microstrip circular disk

A. K. Verma*, Raj Kumar, Manu Sharma

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Accurate MWM-based closed-form expressions are presented to determine total lumped capacitance C1 and effective radius Reff of a microstrip circular patch in the range 0.1 ≤ h / R ≤ 10 and ∈r ≤ 1, with maximum errors of 5% and 2.5% for Ct and Reff, respectively, on ∈r = 1. The results are compared to those obtained with Noble's variational method. For ∈r > 1, the error of the present model decreases. A graphical method is also presented to determine the Reff of the circular patch, which has an accuracy of < 1.5% versus the calculated value.

Original languageEnglish
Pages (from-to)217-221
Number of pages5
JournalMicrowave and Optical Technology Letters
Volume14
Issue number4
Publication statusPublished - Mar 1997
Externally publishedYes

Keywords

  • Capacitance
  • Circular patch
  • Microstrip circular disk
  • Resonators

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