Metasurface Waveguides Applied to Matched Feeds for Reflector Antennas

Michael Forum Palvig, Erik Jorgensen, Peter Meincke, Olav Breinbjerg

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

Abstract

Waveguides with anisotropic surface impedance boundaries have been investigated for the purpose of matched feeds for offset reflectors. Matched feeds employ higher order waveguide modes to cancel out cross polarization introduced by the offset geometry. Since the higher order modes propagate at different speeds than the fundamental mode in conventional waveguides, it is challenging to meet phase relationship requirements over a large band. We have found that traditional corrugated waveguides are poorly suited for matched feed applications. However, other surfaces that satisfy the balanced hybrid condition, but have a small capacitive longitudinal reactance and large inductive azimuthal reactance show very promising properties: In a large band, HE11 and HE21 have similar propagation characteristics.
Original languageEnglish
Title of host publicationProceedings of the 11th European Conference on Antennas and Propagation (EUCAP 2017)
PublisherIEEE
Publication date2017
Pages3636-3638
ISBN (Electronic)978-8-8907-0187-0
DOIs
Publication statusPublished - 2017
Event11th European Conference on Antennas and Propagation (EuCAP 2017) - Paris, France
Duration: 19 Mar 201724 Mar 2017

Conference

Conference11th European Conference on Antennas and Propagation (EuCAP 2017)
CountryFrance
CityParis
Period19/03/201724/03/2017

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