Effect of substrate dielectric anisotropy on the frequency behavior of micro strip circuits

Enrique Drake, Rafael R. Boix, Manuel Horno, Tapan K. Sarkar

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


In this paper, we carry out a full-wave analysis of shielded two-port microstrip circuits, in which the metallizations are embedded in a multilayered substrate that may contain isotropic dielectrics and/or anisotropic dielectrics. The Galerkin's method in the spectral domain is applied for determining the current density on the metallizations of the circuits when their feeding lines are excited by means of delta-gap generators, and the matrix pencil technique is subsequently used for deembedding the scattering parameters from the computed current densities. Results are presented for the scattering parameters of some microstrip discontinuities and filters printed on both isotropic dielectric substrates and anisotropic dielectric substrates. These results show that when substrate dielectric anisotropy is ignored, errors arise when computing the scattering parameters of microstrip discontinuities and when predicting the operating frequency band of microstrip filters.

Original languageEnglish (US)
Pages (from-to)1394-1403
Number of pages10
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number8
StatePublished - 2000


  • Anisotropic dielectric substrates
  • Microstrip circuits
  • Spectral-domain numerical techniques

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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