Henthorn, S. orcid.org/0000-0003-1913-9283 and Ford, K.L. orcid.org/0000-0002-1080-6193 (2023) Tuneable polarisation agnostic reflectarray element at mmWave using polymer dispersed liquid crystal. In: 2023 17th European Conference on Antennas and Propagation (EuCAP). 2023 17th European Conference on Antennas and Propagation (EuCAP), 26-31 Mar 2023, Florence, Italy. Institute of Electrical and Electronics Engineers (IEEE) ISBN 9781665475419
Abstract
A reflectarray element operating at 73 GHz is designed using polymer dispersed liquid crystal (PDLC) to allow tuning of the reflected phase. Liquid crystals allow low-loss tuning at mmWave frequencies, but add complexity to the fabrication process. PDLCs trap pockets of liquid crystal in polymer, simplifying fabrication at the cost of reduced birefringence in permittivity. This paper proposes and simulates a polarisation agnostic element design achieving 200 degrees phase change with only 2.1 dB magnitude variation using PDLCs by using a slotted, rotationally symmetrical unit cell with two closely spaced resonances.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 The Authors. Except as otherwise noted, this author-accepted version of a paper published in 2023 17th European Conference on Antennas and Propagation (EuCAP) is made available via the University of Sheffield Research Publications and Copyright Policy under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ |
Keywords: | Reflectarray; metasurface; polymer dispersed liquid crystal; mmWave |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > School of Electrical and Electronic Engineering |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 11 Dec 2024 12:39 |
Last Modified: | 11 Dec 2024 12:39 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers (IEEE) |
Refereed: | Yes |
Identification Number: | 10.23919/eucap57121.2023.10133583 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:220699 |