Metasurface Modeling for Low Reflectance Polarization Conversion Based on a Multilayer Liquid Crystal Panel

We numerically analyze a tunable millimeter-wave polarization converter based on liquid crystals (LCs) smoothy rotating the polarization plane of the transmitted wave beam with a low level of the reflection coefficient at 72 GHz. It is formed by three cascaded metasurfaces with low reflection loss,...

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Bibliographic Details
Published in:	2023 Antennas Design and Measurement International Conference (ADMInC) pp. 3 - 6
Main Authors:	Surikov, Vasilij V., Glybovski, Stanislav B.
Format:	Conference Proceeding
Language:	English
Published:	IEEE 19-10-2023
Subjects:	liquid crystal phase shifting plate polarizer tunable polarization rotator
Online Access:	Get full text
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Summary:	We numerically analyze a tunable millimeter-wave polarization converter based on liquid crystals (LCs) smoothy rotating the polarization plane of the transmitted wave beam with a low level of the reflection coefficient at 72 GHz. It is formed by three cascaded metasurfaces with low reflection loss, i.e. two tunable phase-shifting plates and one linear-to-circular polarization converter. Each phase-shifting plate contains two LC layers separated by a quarter-wave layer. On both sides of each LC layer, there are metallization layers, which are periodic structures with a subwavelength period deposited on quartz substrates. When illuminated with a linearly-polarized wave beam, the converter allows tunable polarization rotation at an angle of up to 90 degrees. The numerical simulations predict relatively low dissipative losses and reflection coefficient level.
DOI:	10.1109/ADMInC59462.2023.10335381