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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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 |
|---|---|
| Publisher: | CREMA, Cochin University Science & Technology |
| 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.ac.in/id/eprint/10321 |
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