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Microstrip Antennas and Arrays on Photonic Band Gap Substrates

Sudha, T and Vedavathy, TS (2001) Microstrip Antennas and Arrays on Photonic Band Gap Substrates. In: 2001 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, IMOC 2001, 6-10 August, Belem,Brazil, Vol.1, 105-108.

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Abstract

Patch antennas have some limitations such as restricted band-width of operation, low gain and a potential decrease in radiation efficiency due to surface wave losses. In this paper, the ability of a photonic band gap (PBG) substrate to minimize the surface wave effects is analyzed for a thick and high /spl epsiv//sub r/ substrate. Two different types of PBGs are used, one the conventional dielectric PBG and the other a metallodielectric PBG. The PBG patch antenna showed significantly reduced levels of surface modes compared to conventional patch antenna, thus improving the gain and far-field radiation pattern. The results also showed that introducing metallic cylinders in dielectric crystals is more effective in suppressing side lobe radiation. The performance improvement of a two-element array of patches on the PBG substrate is also analyzed.

Item Type: Conference Paper
Additional Information: Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Photanic Band Gap;Metallodielectric;Microstrip antenna;Surface waves
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 13 Feb 2006
Last Modified: 19 Sep 2010 04:23
URI: http://eprints.iisc.ernet.in/id/eprint/5324

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