Study of the capacitively fed microstrip antenna element

Author

Vandenbosch, Guy A E ; Van de Capelle, Antoine R.

Author_Institution

Div. ESAT-TELEMIC, Katholieke Univ., Leuven, Belgium

Volume

42

Issue

12

fYear

1994

fDate

12/1/1994 12:00:00 AM

Firstpage

1648

Lastpage

1652

Abstract

The moment method is used to solve the integral equations describing the capacitively fed rectangular microstrip antenna element. This element consists of a ground plane, a radiating patch, and a small patch located between ground plane and radiating patch. The small patch is fed by a coaxial probe. It excites the radiating patch through capacitive coupling. After checking the accuracy by comparing calculated and measured results, the effect of the capacitor patch is analyzed theoretically. A procedure is given to determine capacitor patches which yield elements matched to the coaxial feed. It is shown how a matched configuration can be found for a given capacitor patch height

Keywords

antenna feeds; antenna testing; antenna theory; capacitance; impedance matching; integral equations; method of moments; microstrip antennas; probes; calculated results; capacitive coupling; capacitively fed antenna element; capacitor patch height; capacitor patches; coaxial feed; coaxial probe; ground plane; integral equations; matched configuration; measured results; moment method; radiating patch; rectangular microstrip antenna element; Antenna measurements; Capacitors; Coaxial components; Feeds; Inductance; Integral equations; Microstrip antennas; Moment methods; Probes; Resonance;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.362807

Filename

362807