Resonance of the axial-symmetric modes in microstrip disk resonators

Weng Cho Chew, J. A. Kong

Research output: Contribution to journalArticlepeer-review


Three methods have been used to calculate the resonant frequencies for the axial-symmetric modes in the microstrip disk resonators which also have the application as radiating antennas. The variational Galerkin's method provides the most accurate result for the estimation of both the real and imaginary parts of the resonant frequency shifts with judicious choices of basis functions. The iterative approach gives good results for the imaginary part of the frequency shift and very crude approximations for the real part. The perturbation formula is the most efficient in computational time and is useful for sufficiently large permittivity for the substrate material and small ratio of substrate thickness to disk radius. To illustrate the application of the circular microstrip disk as a radiating antenna, the radiation pattern for the axial-symmetric mode is also plotted.

Original languageEnglish (US)
Pages (from-to)582-591
Number of pages10
JournalJournal of Mathematical Physics
Issue number3
StatePublished - 1979
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics


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