Design of a low-THz linear-to-circular polarization conversion metasurface

Research output: Contribution to conference (unpublished)Paperpeer-review

Authors

Colleges, School and Institutes

External organisations

  • Department of Electronic Electrical and Systems Engineering

Abstract

A study on designing a linear polarization (LP) to circular polarization (CP) converter at low THz frequencies is presented. The proposed design is composed of a periodic arrangement of 4-micron thick gold, anisotropic patches deposited on a quartz substrate, with a gold ground plane backing the wafer. The materials were chosen to minimize reflection loss, with the quartz providing an optically flat surface. Simulations have been carried out using CST Microwave Studio to extract and evaluate the operation bandwidth and the reflection losses of the proposed design. The design achieves more than 120 GHz left handed circular polarization (LHCP) bandwidth and more than 65 GHz right handed circular polarization (RHCP) bandwidth with 3 dB axial ratio bandwidth more than 89.9% and a 3 dB axial ratio bandwidth of 26.5% respectively. The proposed design can be fabricated using standard microfabrication methods.

Details

Original languageEnglish
Publication statusPublished - 2019
EventAntennas and Propagation Conference 2019, APC 2019 - Birmingham, United Kingdom
Duration: 11 Nov 201912 Nov 2019

Conference

ConferenceAntennas and Propagation Conference 2019, APC 2019
CountryUnited Kingdom
CityBirmingham
Period11/11/1912/11/19

Keywords

  • Enhanced bandwidth, Low THz, LP to CP conversion, Metasurface, Polarization converters

ASJC Scopus subject areas