Microstripline- and stripline-fed aperture-coupled cylindrical rectangular microstrip antennas

Author

Tam, W.Y. ; Lai, A.K.Y. ; Luk, K.M.

Author_Institution

Dept. of Electron. Eng., Hong Kong Polytech., Hung Hom, Hong Kong

Volume

145

Issue

3

fYear

1998

fDate

6/1/1998 12:00:00 AM

Firstpage

257

Lastpage

261

Abstract

Stripline-fed and microstripline-fed aperture-coupled cylindrical rectangular microstrip antennas are investigated. The equivalence principle is invoked to separate the feedline and the antenna patch with equivalent magnetic currents distribution on the aperture region. The Lorentz reciprocity theorem is applied to find the interactions between the aperture and the feedline. The unknown patch current and aperture field are determined by solving coupled integral equations, which involve spectral-domain Green´s functions, using the Galerkin procedure. Numerical results of input impedance and far-field patterns are compared with those for antennas on a planar surface

Keywords

Galerkin method; Green´s function methods; antenna feeds; antenna radiation patterns; antenna theory; electric impedance; integral equations; microstrip antennas; spectral-domain analysis; Galerkin procedure; Lorentz reciprocity theorem; antenna patch; aperture field; aperture-coupled antennas; coupled integral equations; cylindrical rectangular microstrip antennas; equivalence principle; equivalent magnetic currents distribution; far-field patterns; feedline; input impedance; microstripline feed; numerical results; spectral-domain Green´s functions; stripline feed; unknown patch current;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:19982053

Filename

710409