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

Raheel M. Hashmi; Karu P. Esselle; Stuart G. Hay

doi:10.1109/APS.2014.6905200

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 proceeding › Conference proceeding contribution › peer-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 language	English
Title of host publication	2014 IEEE Antennas and Propagation Society International Symposium(APSURSI)
Place of Publication	PIscataway, NJ
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	1748-1749
Number of pages	2
ISBN (Electronic)	9781479935406
DOIs	https://doi.org/10.1109/APS.2014.6905200
Publication status	Published - 18 Sep 2014
Event	2014 IEEE Antennas and Propagation Society International Symposium, APSURSI 2014 - Memphis, United States Duration: 6 Jul 2014 → 11 Jul 2014

Other

Other	2014 IEEE Antennas and Propagation Society International Symposium, APSURSI 2014
Country/Territory	United States
City	Memphis
Period	6/07/14 → 11/07/14

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10.1109/APS.2014.6905200

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title = "Achieving high directivity-bandwidth through flat GRIN superstrates in Fabry-Perot cavity antennas",

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.",

author = "Hashmi, {Raheel M.} and Esselle, {Karu P.} and Hay, {Stuart G.}",

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doi = "10.1109/APS.2014.6905200",

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Hashmi, RM, Esselle, KP & Hay, SG 2014, Achieving high directivity-bandwidth through flat GRIN superstrates in Fabry-Perot cavity antennas. in 2014 IEEE Antennas and Propagation Society International Symposium(APSURSI)., 6905200, Institute of Electrical and Electronics Engineers (IEEE), PIscataway, NJ, pp. 1748-1749, 2014 IEEE Antennas and Propagation Society International Symposium, APSURSI 2014, Memphis, Tennessee, United States, 6/07/14. https://doi.org/10.1109/APS.2014.6905200

Achieving high directivity-bandwidth through flat GRIN superstrates in Fabry-Perot cavity antennas. / Hashmi, Raheel M.; Esselle, Karu P.; Hay, Stuart G.

2014 IEEE Antennas and Propagation Society International Symposium(APSURSI). PIscataway, NJ : Institute of Electrical and Electronics Engineers (IEEE), 2014. p. 1748-1749 6905200.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

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AB - 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.

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

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