Multilayer frequency-selective-surface reflector for constant gain over ultra wideband

Y. Ranga*, L. Matekovits, Karu P. Esselle, Andrew R. Weily

*Corresponding author for this work

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

12 Citations (Scopus)

Abstract

In this paper the gain enhancement of an ultra-wideband (UWB) antenna, achieved using an appropriately designed multi-layer frequency selective surface (FSS) reflector is demonstrated. The proposed novel FSS reflects effectively in-phase over a bandwidth of about 145%. Consequently, significant enhancement in antenna gain has been achieved with a low-profile configuration without compromising the impedance bandwidth of the UWB antenna. The composite structure is compact, with a total height of λ/4 where λ is the free-space wavelength at the lowest operating frequency of 3 GHz. Experimental results show an impedance bandwidth of 145% BW with FSS and 149% without FSS. The antenna gain is maintained around 9.3 dBi from 3 to 15 GHz with a variation of ±0.5 dB. The predicted wideband antenna performance and gain enhancement due to the presence of the FSS reflector are discussed.

Original languageEnglish
Title of host publicationProceedings of the 5th European Conference on Antennas and Propagation, EUCAP 2011
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages332-334
Number of pages3
ISBN (Electronic)9788882020743
ISBN (Print)9781457702501
Publication statusPublished - 2011
Event5th European Conference on Antennas and Propagation, EUCAP 2011 - Rome, Italy
Duration: 10 Apr 201115 Apr 2011

Other

Other5th European Conference on Antennas and Propagation, EUCAP 2011
CountryItaly
CityRome
Period10/04/1115/04/11

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