Effective techniques for extending the directivity-bandwidth of resonant cavity antennas

Raheel M. Hashmi; Basit A. Zeb; Karu P. Esselle

doi:10.1109/IWAT.2014.6958658

Effective techniques for extending the directivity-bandwidth of resonant cavity antennas

Raheel M. Hashmi, Basit A. Zeb, Karu P. Esselle

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

Abstract

We present extremely simple techniques developed recently to address the bandwidth enhancement of resonant cavity antennas (RCAs) made out of unprinted dielectric slabs. These techniques are suitable for both unit-cell superstrate models as well as the finite-size RCA model in which superstructure area is optimized to increase the 3dB directivity bandwidth of RCA. It is shown that controlled dielectric and thickness contrast can be used as a defect to create wideband RCA superstrates in unit-cell design whereas the use of small superstrate area can directly enhance the 3dB bandwidth. Prototype antenna design is presented and results are included to demonstrate the improvements obtained. Significant improvements in 3dB bandwidth (≥50%) have been observed as compared to conventional designs while conserving design simplicity, practicality and ease of fabrication, which are the key advantages of presented techniques.

Original language	English
Title of host publication	2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications, iWAT 2014
Place of Publication	Piscataway, NJ
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	270-272
Number of pages	3
ISBN (Electronic)	9781479923298
DOIs	https://doi.org/10.1109/IWAT.2014.6958658
Publication status	Published - 14 Nov 2014
Event	2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications, iWAT 2014 - Sydney, Australia Duration: 4 Mar 2014 → 6 Mar 2014

Other

Other	2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications, iWAT 2014
Country/Territory	Australia
City	Sydney
Period	4/03/14 → 6/03/14

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10.1109/IWAT.2014.6958658

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Hashmi, R. M., Zeb, B. A., & Esselle, K. P. (2014). Effective techniques for extending the directivity-bandwidth of resonant cavity antennas. In 2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications, iWAT 2014 (pp. 270-272). [6958658] Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/IWAT.2014.6958658

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title = "Effective techniques for extending the directivity-bandwidth of resonant cavity antennas",

abstract = "We present extremely simple techniques developed recently to address the bandwidth enhancement of resonant cavity antennas (RCAs) made out of unprinted dielectric slabs. These techniques are suitable for both unit-cell superstrate models as well as the finite-size RCA model in which superstructure area is optimized to increase the 3dB directivity bandwidth of RCA. It is shown that controlled dielectric and thickness contrast can be used as a defect to create wideband RCA superstrates in unit-cell design whereas the use of small superstrate area can directly enhance the 3dB bandwidth. Prototype antenna design is presented and results are included to demonstrate the improvements obtained. Significant improvements in 3dB bandwidth (≥50%) have been observed as compared to conventional designs while conserving design simplicity, practicality and ease of fabrication, which are the key advantages of presented techniques.",

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Hashmi, RM, Zeb, BA & Esselle, KP 2014, Effective techniques for extending the directivity-bandwidth of resonant cavity antennas. in 2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications, iWAT 2014., 6958658, Institute of Electrical and Electronics Engineers (IEEE), Piscataway, NJ, pp. 270-272, 2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications, iWAT 2014, Sydney, Australia, 4/03/14. https://doi.org/10.1109/IWAT.2014.6958658

Effective techniques for extending the directivity-bandwidth of resonant cavity antennas. / Hashmi, Raheel M.; Zeb, Basit A.; Esselle, Karu P.

2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications, iWAT 2014. Piscataway, NJ : Institute of Electrical and Electronics Engineers (IEEE), 2014. p. 270-272 6958658.

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

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Hashmi RM, Zeb BA, Esselle KP. Effective techniques for extending the directivity-bandwidth of resonant cavity antennas. In 2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications, iWAT 2014. Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE). 2014. p. 270-272. 6958658 https://doi.org/10.1109/IWAT.2014.6958658

Effective techniques for extending the directivity-bandwidth of resonant cavity antennas

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