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Coplanar Capacitively Coupled Probe Fed Microstrip Antennas for Wideband Applications

Kasabegoudar, VG and Vinoy, KJ (2010) Coplanar Capacitively Coupled Probe Fed Microstrip Antennas for Wideband Applications. In: IEEE Transaction on Antennas and Propagation, 58 (10). pp. 3131-3138.

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Abstract

The design and analysis of a coplanar capacitive fed microstrip antenna suspended above the ground plane is presented. It is demonstrated that the proposed approach can be used for designing antennas with impedance bandwidth of about 50% and a good gain to operate in various microwave bands. The model of the antenna incorporates the capacitive feed strip which is fed by a coaxial probe using equivalent circuit approach, and matches simulation and experimental results. The capacitive feed strip used here is basically a rectangular microstrip capacitor formed from a truncated microstrip transmission line and all its open ends are represented by terminal or edge capacitances. The error analysis was carried out for validity of the model for different design parameters. The antenna configuration can be used where unidirectional radiation patterns are required over a wide bandwidth.

Item Type: Journal Article
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 02 Nov 2010 07:34
Last Modified: 02 Nov 2010 07:37
URI: http://eprints.iisc.ernet.in/id/eprint/33167

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