Waveguide Excited Microstrip Patch Antenna theory And Experiment

Min-Hua Ho, Krzysztof A. Michalski, Kai Chang

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

An arbitrarily shaped microstrip patch antenna excited through an arbitrarily shaped aperture in the mouth of a rectangular waveguide is investigated theoretically and experimentally. The metallic patch resides on a dielectric substrate grounded by the waveguide flange and may be covered by a dielectric superstrate. The substrate (and superstrate, if present) consists of one or more planar, homogeneous layers, which may exhibit uniaxial anisotropy. The analysis is based on the space domain integral equation approach. More specifically, the Green's functions for the layered medium and the waveguide are used to formulate a coupled set of integral equations for the patch current and the aperture electric field. The layered medium Green's function is expressed in terms of Sommerfeld-type integrals and the waveguide Green's function in terms of Floquet series, which are both accelerated to reduce the computational effort The coupled integral equations are solved by the method of moments using vector basis functions defined over triangular subdomains. The dominant mode reflection coefficient in the waveguide and the farfield radiation patterns are then found from the computed aperture field and patch current distributions. The radar cross section (RCS) of a Planewave excited structure is obtained in a like manner. Sample numerical results are presented and are found to be in good agreement with measurements and with published data.

Original languageEnglish
Pages (from-to)1114-1125
Number of pages12
JournalIEEE Transactions on Antennas and Propagation
Volume42
Issue number8
DOIs
Publication statusPublished - 1994 Jan 1

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Microstrip antennas
Waveguides
Green's function
Integral equations
Experiments
Radar cross section
Rectangular waveguides
Directional patterns (antenna)
Substrates
Flanges
Method of moments
Anisotropy
Electric fields

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

Ho, Min-Hua ; Michalski, Krzysztof A. ; Chang, Kai. / Waveguide Excited Microstrip Patch Antenna theory And Experiment. In: IEEE Transactions on Antennas and Propagation. 1994 ; Vol. 42, No. 8. pp. 1114-1125.
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Waveguide Excited Microstrip Patch Antenna theory And Experiment. / Ho, Min-Hua; Michalski, Krzysztof A.; Chang, Kai.

In: IEEE Transactions on Antennas and Propagation, Vol. 42, No. 8, 01.01.1994, p. 1114-1125.

Research output: Contribution to journalArticle

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