Bandwidth comparison of rectangular and offset cross-slot frequency-selective surface polarisation transformers

Sarah Clendinning; Robert Cahill; Dmitry Zelenchuk; Vincent Fusco

doi:10.1049/ell2.12141

Bandwidth comparison of rectangular and offset cross-slot frequency-selective surface polarisation transformers

Sarah Clendinning^*, Robert Cahill, Dmitry Zelenchuk, Vincent Fusco

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

114 Downloads (Pure)

Abstract

This letter compares the 3 dB axial ratio (AR) bandwidth (BW) of transmission mode single-screen linear-to-circular polarisation convertors based on three different slot topologies. Using a conventional centre-connected cross-slot arrangement as a baseline, we show that a significant performance improvement can be achieved by creating a more elaborate design with unit cells composed of multiple unequal length offset rectangular-shaped apertures. The additional flexibility to tailor the shape of the Transverse Electric (TE) and Transverse Magnetic (TM) spectral amplitude and phase responses is exploited to achieve an 84% increase in the BW relative to the baseline for a freestanding structure, which is designed to work at a centre frequency of 10.0 GHz. Experimental AR results are used to verify the new design methodology.

Original language	English
Pages (from-to)	372-374
Number of pages	3
Journal	IET Electronic Letters
Volume	57
Issue number	9
Early online date	22 Mar 2021
DOIs	https://doi.org/10.1049/ell2.12141
Publication status	Published - 23 Apr 2021

Bibliographical note

Funding Information:
The first author was supported by a PhD scholarship funded by the Department for the Economy (DfE) Northern Ireland.

Publisher Copyright:
© 2021 The Authors. Electronics Letters published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1049/ell2.12141Licence: CC BY

Bandwidth comparison of rectangular and offset cross-slot FSS polarisation transformers
Copyright 2021 the authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Final published version, 851 KBLicence: CC BY
Bandwidth comparison of rectangular and offset cross-slot frequency-selective surface polarisation transformers
Copyright 2022 the authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited
Final published version, 852 KBLicence: CC BY

Optimising the axial ratio bandwidth of resonant linear to circular polarisation converters
Clendinning, S. (Author), Cahill, R. (Supervisor), Zelenchuk, D. (Supervisor) & Fusco, V. (Supervisor), Dec 2021
Student thesis: Doctoral Thesis › Doctor of Philosophy

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Cite this

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abstract = "This letter compares the 3 dB axial ratio (AR) bandwidth (BW) of transmission mode single-screen linear-to-circular polarisation convertors based on three different slot topologies. Using a conventional centre-connected cross-slot arrangement as a baseline, we show that a significant performance improvement can be achieved by creating a more elaborate design with unit cells composed of multiple unequal length offset rectangular-shaped apertures. The additional flexibility to tailor the shape of the Transverse Electric (TE) and Transverse Magnetic (TM) spectral amplitude and phase responses is exploited to achieve an 84% increase in the BW relative to the baseline for a freestanding structure, which is designed to work at a centre frequency of 10.0 GHz. Experimental AR results are used to verify the new design methodology.",

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AU - Zelenchuk, Dmitry

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Y1 - 2021/4/23

N2 - This letter compares the 3 dB axial ratio (AR) bandwidth (BW) of transmission mode single-screen linear-to-circular polarisation convertors based on three different slot topologies. Using a conventional centre-connected cross-slot arrangement as a baseline, we show that a significant performance improvement can be achieved by creating a more elaborate design with unit cells composed of multiple unequal length offset rectangular-shaped apertures. The additional flexibility to tailor the shape of the Transverse Electric (TE) and Transverse Magnetic (TM) spectral amplitude and phase responses is exploited to achieve an 84% increase in the BW relative to the baseline for a freestanding structure, which is designed to work at a centre frequency of 10.0 GHz. Experimental AR results are used to verify the new design methodology.

AB - This letter compares the 3 dB axial ratio (AR) bandwidth (BW) of transmission mode single-screen linear-to-circular polarisation convertors based on three different slot topologies. Using a conventional centre-connected cross-slot arrangement as a baseline, we show that a significant performance improvement can be achieved by creating a more elaborate design with unit cells composed of multiple unequal length offset rectangular-shaped apertures. The additional flexibility to tailor the shape of the Transverse Electric (TE) and Transverse Magnetic (TM) spectral amplitude and phase responses is exploited to achieve an 84% increase in the BW relative to the baseline for a freestanding structure, which is designed to work at a centre frequency of 10.0 GHz. Experimental AR results are used to verify the new design methodology.

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Bandwidth comparison of rectangular and offset cross-slot frequency-selective surface polarisation transformers

Abstract

Bibliographical note

ASJC Scopus subject areas

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Student theses

Optimising the axial ratio bandwidth of resonant linear to circular polarisation converters

Cite this