Performance of aperture-coupled dual-patch microstrip phased arrays

Author

Au, Tsien Ming ; Tong, Kin Fai ; Luk, Kwai-Man

Author_Institution

Centre for Wireless Commun., Nat. Univ. of Singapore, Singapore

Volume

44

Issue

9

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

1290

Lastpage

1295

Abstract

This paper presents an analysis of infinite phased arrays of aperture-coupled two-layer dual-patch microstrip antennas. The substrate layers for supporting the patches have the same dielectric constant and are separated by an airgap. The numerical model is based on the spectral-domain method of moments together with the Floquet theorem. Calculated results predict a 2:1 standing-wave ratio (SWR) bandwidth of 30-40% in a ±60° scan cone for arrays operating at around 4 GHz. Measured results from a waveguide simulator are obtained to verify the theoretical prediction

Keywords

antenna phased arrays; method of moments; microstrip antenna arrays; spectral-domain analysis; 2:1 standing-wave ratio bandwidth; 4 GHz; Floquet theorem; airgap; aperture-coupled dual-patch microstrip phased arrays; dielectric constant; infinite phased arrays; scan cone; spectral-domain method of moments; substrate layers; two-layer dual-patch microstrip antennas; waveguide simulator; Aperture antennas; Bandwidth; Dielectric constant; Dielectric measurements; Dielectric substrates; Microstrip antenna arrays; Microstrip antennas; Moment methods; Numerical models; Phased arrays;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.535388

Filename

535388