Composite defect-mode superstructures and wideband EBG resonator Antennas

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

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

1 Citation (Scopus)

Abstract

We propose two electromagnetic band gap (EBG) structures made out of multi-layer dielectric slabs to enhance the bandwidth of EBG resonator Antennas (ERAs). These multi-layer structures are designed to achieve wide defect-mode bandwidths. Wide defect modes are created by optimising the permittivity and thickness of the individual slabs, as well as the inter-slab separations. Using these EBG structures as ERA superstructures and truncating them to an appropriate area, two ERAs were designed. They exhibit pattern bandwidths nearly twice as wide as the classical ERAs. 3dB directivity bandwidths of 14.1% and 19.3% with a maximum directivity of 17.5 dBi and 18.7 dBi, respectively, were measured for the two ERA prototypes. The lateral dimensions of the ERA superstrates are 1.5×1.5λ02 which represent more than 90% reduction in superstrate area when compared with classical ERAs. Small size and simple configuration make these ERAs very suitable for high-gain millimetre wave applications when they are scaled to those bands.

Original languageEnglish
Title of host publication2015 9th European Conference on Antennas and Propagation, EuCAP 2015
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1-5
Number of pages5
ISBN (Electronic)9788890701856
Publication statusPublished - 27 Aug 2015
Event9th European Conference on Antennas and Propagation, EuCAP 2015 - Lisbon, Portugal
Duration: 13 May 201517 May 2015

Other

Other9th European Conference on Antennas and Propagation, EuCAP 2015
CountryPortugal
CityLisbon
Period13/05/1517/05/15

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