Design of multi-frequency microstrip antennas using multiple rings

Pal, A and Behera, S and Vinoy, KJ (2009) Design of multi-frequency microstrip antennas using multiple rings. In: IET Microwaves, Antennas & Propagation, 3 (1). pp. 77-84.

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Abstract

An electromagnetically coupled feed arrangement is proposed for simultaneously exciting multiple concentric ring antennas for multi-frequency operation. This has a multi-layer dielectric configuration in which a transmission line is embedded below the layer containing radiating rings. Energy coupled to these rings from the line beneath is optimised by suitably adjusting the location and dimensions of stubs on the line. It has been shown that the resonant frequencies of these rings do not change as several of these single-frequency antennas are combined to form a multi-resonant antenna. Furthermore, all radiators are forced to operate at their primary mode and some harmonics of the lower resonant frequency rings appearing within the frequency range are suppressed when combined. The experimental prototype antenna has three resonant frequencies at which it has good radiation characteristics.

Item Type:	Journal Article
Publication:	IET Microwaves, Antennas & Propagation
Publisher:	The Institution of Engineering and Technology
Additional Information:	Copyright of this article belongs to The Institution of Engineering and Technology.
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	05 Nov 2009 11:30
Last Modified:	19 Sep 2010 05:28
URI:	http://eprints.iisc.ac.in/id/eprint/19354

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