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Effects of photonic band gap substrates on microstrip antenna performance

Sudha, T and Vedavathy, TS (2000) Effects of photonic band gap substrates on microstrip antenna performance. In: Proceedings of Seventh National Symposium on Antennas and Propagation, 6-8 Dec. 2000, Cochin, India, pp. 57-60.

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Abstract

Patch antennas have some limitations such as restricted bandwidth 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 ϵr substrate. In this work, the substrate of a microstrip antenna is loaded with a 2D triangular lattice of circular holes to give the PBG structure. The PBG patch antenna showed significantly reduced levels of surface modes compared to a conventional patch antenna, thus improving the gain and far-field radiation pattern. An effort is also made to study the effect on the antenna pattern of the dielectric contrast between the host material and atoms in the PBG structure

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to CREMA, Cochin University Science & Technology
Keywords: antenna radiation patterns;microstrip antennas;photonic band gap;substrates
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 26 Jul 2007
Last Modified: 27 Aug 2008 12:43
URI: http://eprints.iisc.ernet.in/id/eprint/10321

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