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 language | English |
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Title of host publication | 12th European Conference on Antennas and Propagation (EuCAP 2018) |
Publisher | Institution of Engineering and Technology |
ISBN (Print) | 9781785618161 |
DOIs | |
Publication status | Published - 2018 |
Event | 12th European Conference on Antennas and Propagation 2018 - London, United Kingdom Duration: 9 Apr 2018 → 13 Apr 2018 |
Conference
Conference | 12th European Conference on Antennas and Propagation 2018 |
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Abbreviated title | EuCAP 2018 |
Country/Territory | United Kingdom |
City | London |
Period | 9/04/18 → 13/04/18 |
Keywords
- Circular polarisation selective surfaces
- Frequency selective surfaces
- Linear-to-circular polarisers
- Multibeam antennas
- Reflector antennas
ASJC Scopus subject areas
- Electrical and Electronic Engineering