Network modeling of an aperture coupling between microstrip line and patch antenna for active array applications

Author

Gao, Xuanzheng ; Chang, Kai

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

36

Issue

3

fYear

1988

fDate

3/1/1988 12:00:00 AM

Firstpage

505

Lastpage

513

Abstract

An analytical method based on the aperture coupling theory and the derivation of the S-parameter matrix has been developed for modeling a microstrip line coupled to a microstrip patch antenna using a circular coupling aperture. Closed-form solutions were derived for scattering parameters of the coupling circuit. Input impedance and matching condition can be calculated from the equivalent six-port network. The theoretical results agree well with the measurements. The analysis should have many applications in active array and spatial power combining systems

Keywords

S-parameters; antenna theory; equivalent circuits; impedance matching; microstrip antennas; microwave antenna arrays; strip line components; waveguide couplers; waveguide theory; S-parameter matrix; active array; aperture coupling; circular coupling aperture; equivalent six-port network; impedance matching; microstrip line; microstrip patch antenna; microwave antenna arrays; network modelling; patch antenna; scattering parameters; spatial power combining systems; Antenna measurements; Apertures; Closed-form solution; Coupled mode analysis; Coupling circuits; Impedance matching; Microstrip antennas; Patch antennas; Scattering parameters; Transmission line matrix methods;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.3542

Filename

3542