Sub-Wavelength Frequency Selective Surface Design for Improved Antenna Array Out-of-Band Rejection

C. Yepes Julia, D. Cavallo, A. Neto, E. Gandini, S Monni, F.E. van Vliet

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

In this work, the problem of enhancing the frequency selectivity property of an antenna array has been studied. A solution based on a multi-layer frequency selective surface (FSS), composed of sub wavelength elements is proposed. An equivalent circuit model is used for the design, under the assumption that the inter-layer interaction is dominated by a single Floquet mode. This approximation remains valid by keeping the unit-cell size comparable to the inter-layer distance. Results for generic oblique incidence are presented. Fast roll-off is achieved by using a 3 pole Chebyshev filter design. Moreover, the FSS is used in combination with a connected slot array antenna. The resulting structure allows to scan up to 45° in both principal planes with a relative bandwidth (S11<; -10 dB) of 15% around the central frequency f0 = 4.8 GHz. Higher order harmonics are rejected up to 18 GHz.
Original languageEnglish
Title of host publication2016 IEEE International Symposium on Phased Array Systems and Technology, PAST 2016
Place of PublicationDanvers, MA
PublisherIEEE
Pages1-5
Number of pages5
ISBN (Electronic)978-1-5090-1447-7
DOIs
Publication statusPublished - Oct 2016
Event2016 IEEE International Symposium on Phased Array Systems and Technology, PAST 2016 - Waltham, MA, United States
Duration: 18 Oct 201621 Oct 2016
http://www.array2016.org/

Conference

Conference2016 IEEE International Symposium on Phased Array Systems and Technology, PAST 2016
Abbreviated titlePAST
CountryUnited States
CityWaltham, MA
Period18/10/1621/10/16
Internet address

Keywords

  • bandpass filters
  • phased array antenna
  • frequency selective surfaces (FSSs)

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