Tuning stubs for microstrip patch antennas

Author

du Plessis, M. ; Cloete, J.H.

Author_Institution

Dept. of Electr. & Electron. Eng., Stellenbosch Univ., South Africa

fYear

1993

fDate

June 28 1993-July 2 1993

Firstpage

964

Abstract

A practical method for the simultaneous tuning of both the resonant frequency and the reflection coefficient of a coaxially fed rectangular microstrip patch is described. The use of two tuning stubs allows independent adjustment of the effective patch length and the effective position of the feed point. The effective length determines the resonant frequency of the patch, while the effective position of the feed point determines the input impedance. It is demonstrated that the method allows the adjustment of the reflection coefficient of a patch to less than -60 dB at a frequency which is within 0.005% of specification.<>

Keywords

electric impedance; electromagnetic wave reflection; microstrip antennas; resonance; tuning; coaxially fed rectangular microstrip patch; effective patch length; feed point; input impedance; microstrip patch antennas; reflection coefficient; resonant frequency; tuning stubs; Coaxial components; Feeds; Impedance; Microstrip antennas; Patch antennas; Reflection; Resonance; Resonant frequency; Transmission lines; Tuning;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1993. AP-S. Digest

Conference_Location

Ann Arbor, MI, USA

Print_ISBN

0-7803-1246-5

Type

conf

DOI

10.1109/APS.1993.385188

Filename

385188