Optimisation by unit-cell rotation of linear-to-circular polarising reflectors for multiple primary feeds

S. Mercader-Pellicer, G. Goussetis, G. M. Medero, D. Bresciani, H. Legay, N. J. G. Fonseca

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents an efficient method to optimise an offset parabolic linear-to-circular reflection polariser illuminated by multiple linearly-polarised primary ideal feeds. The method exploits a local rotation of the unit-cells to optimise the far-field obtained by each feed. Then a weighted average function based on the field intensities is applied to all the feeds. Improvement in cross-polarisation discrimination up to 10 dB over nominal values without rotation is obtained by simulation in the horizontal plane of the far-field, where maximum cross-polarisation is expected. Smaller improvements are obtained in the vertical plane, and mainly for the feeds outside the reflector's focus.

Original languageEnglish
Title of host publication12th European Conference on Antennas and Propagation (EuCAP 2018)
PublisherInstitution of Engineering and Technology
ISBN (Print)9781785618161
DOIs
Publication statusPublished - 2018
Event12th European Conference on Antennas and Propagation 2018 - London, United Kingdom
Duration: 9 Apr 201813 Apr 2018

Conference

Conference12th European Conference on Antennas and Propagation 2018
Abbreviated titleEuCAP 2018
CountryUnited Kingdom
CityLondon
Period9/04/1813/04/18

Keywords

  • Circular polarisation selective surfaces
  • Frequency selective surfaces
  • Linear-to-circular polarisers
  • Multibeam antennas
  • Reflector antennas

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Mercader-Pellicer, S., Goussetis, G., Medero, G. M., Bresciani, D., Legay, H., & Fonseca, N. J. G. (2018). Optimisation by unit-cell rotation of linear-to-circular polarising reflectors for multiple primary feeds. In 12th European Conference on Antennas and Propagation (EuCAP 2018) Institution of Engineering and Technology. https://doi.org/10.1049/cp.2018.0730