An offset-fed 20/30 GHz dual-band circularly polarized reflectarray antenna

Thomas Gunst Smith, Niels Vesterdal, Ulrich Gothelf, Oleksiy S. Kim, Olav Breinbjerg

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

A dual-frequency circularly polarized offset reflectarray antenna for Ka-band satellite communication is presented. The reflectarray is designed using the concentric dual split-loop element which enables full 360° phase adjustment simultaneously in two separate frequency bands. The elements have been optimized to suppress the cross-polar reflection. Thereafter, the element data is used for synthesis of the reflectarray layout and computation of the associated radiation patterns. The reflectarray is 400mm × 400mm and radiates LHCP at 19.95 GHz and RHCP at 29.75 GHz. Aperture efficiencies of 58% and 60% are obtained at these frequencies, and the cross-polarization is more than 25 dB below peak gain.
Original languageEnglish
Title of host publication7th European Conference on Antennas and Propagation : 2013 EuCAP
PublisherIEEE
Publication date2013
Pages2959 - 2962
ISBN (Print)978-1-4673-2187-7
Publication statusPublished - 2013
Event2013 7th European Conference on Antennas and Propagation - Swedish Exhibition and Congress Centre, Gothenburg, Sweden
Duration: 8 Apr 201312 Apr 2013

Conference

Conference2013 7th European Conference on Antennas and Propagation
LocationSwedish Exhibition and Congress Centre
CountrySweden
CityGothenburg
Period08/04/201312/04/2013

Keywords

  • Reflectarray antenna
  • Reflectarray element
  • Dual band
  • Circularly polarized
  • Concentric dual split-loop

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