Achieving high directivity-bandwidth through flat GRIN superstrates in Fabry-Perot cavity antennas

Raheel M. Hashmi*, Karu P. Esselle, Stuart G. Hay

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

4 Citations (Scopus)

Abstract

The use of flat dielectric surfaces having a radial gradient of permittivity is investigated for use as superstrates in Fabry-Perot cavity (FPC) antennas. The use of such surfaces results in a varied reflectivity within the FPC and makes the boresight emissions spatially coherent. This results in a significantly enhanced gain-bandwidth product of a FPC antenna using only a single feed. The key advantage of such GRIN surfaces is their all-dielectric, flat and thin nature. A prototype FPC antenna is numerically investigated to study the feasibility of this concept. Half power directivity-bandwidth as high as 51% is recorded with peak directivity of 17.6 dBi.

Original languageEnglish
Title of host publication2014 IEEE Antennas and Propagation Society International Symposium(APSURSI)
Place of PublicationPIscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1748-1749
Number of pages2
ISBN (Electronic)9781479935406
DOIs
Publication statusPublished - 18 Sep 2014
Event2014 IEEE Antennas and Propagation Society International Symposium, APSURSI 2014 - Memphis, United States
Duration: 6 Jul 201411 Jul 2014

Other

Other2014 IEEE Antennas and Propagation Society International Symposium, APSURSI 2014
CountryUnited States
CityMemphis
Period6/07/1411/07/14

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