Resonant frequency of a rectangular microstrip patch on several uniaxial substrates

Author

Nelson, Robert M. ; Rogers, David A. ; d´Assuncao, A.G.

Author_Institution

Dept. of Electr. Eng., Idaho Univ., Moscow, ID, USA

Volume

38

Issue

7

fYear

1990

fDate

7/1/1990 12:00:00 AM

Firstpage

973

Lastpage

981

Abstract

A full-wave analysis for determining the resonant frequency of a rectangular microstrip patch on multiple uniaxial anisotropic layers with or without an anisotropic overlay is presented. Two independent methods are used to derive the immittance matrix for the patch, from which the resonant frequency is determined. They are the Hertz vector potentials and the modified spectral domain immittance approach. Numerical results of the resonant frequency are given for several patch configurations, including cases of a patch on a single anisotropic layer, a patch on a double layer with one layer anisotropic and one layer isotropic, a suspended patch resonator with anisotropic substrate, a patch with anisotropic overlay and a patch on two anisotropic substrates with an anisotropic overlay. Changes in the resonant frequency of up to 58% are reported as n_x/n _y is changed from 1.0 (for isotropic substrates) to 2.0

Keywords

antenna theory; electric immittance; microstrip antennas; substrates; Hertz vector potentials; anisotropic overlay; full-wave analysis; immittance matrix; microstrip antennas; modified spectral domain immittance approach; multiple uniaxial anisotropic layers; rectangular microstrip patch; resonant frequency; suspended patch resonator; uniaxial substrates; Anisotropic magnetoresistance; Geometrical optics; Helium; Microstrip antennas; Moment methods; Neodymium; Optical resonators; Polymers; Resonant frequency; Transmission line matrix methods;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.55607

Filename

55607