Open AccessWideband and metal‐only linear to circular polarization converter using multi‐slot elements
Author(s) -
Pesarakloo Ali,
Oraizi Homayoon
Publication year - 2022
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/mia2.12291
Subject(s) - polarizer , wideband , optics , polarization (electrochemistry) , linear polarization , axial ratio , perpendicular , circular polarization , plane wave , materials science , bandwidth (computing) , amplitude , transmission coefficient , transmission (telecommunications) , physics , electrical engineering , engineering , telecommunications , microstrip , geometry , mathematics , laser , chemistry , birefringence
A wideband, metal‐only, and low‐cost transmission‐type polariser is proposed in which a plane wave with linear polarization impinging on the structure is converted to circular polarization wave on the other side and vice versa. The proposed structure is a quad‐layer frequency selective surface that its unit cell is composed of two sets of multi‐slot elements placed perpendicular to each other to achieve a wideband polariser. In this unit cell, by changing the length of the slots, the amplitude and phase of transmission coefficient can be controlled, which are used to create a 90‐degree phase difference between vertical and horizontal components of the incident electric field. A9 × 9 $9\times 9$ array of the proposed polariser with a quad‐layer is simulated and fabricated that shows the bandwidth of 22% (11.7–14.7 GHz) for an axial ratio below −3 dB and a transmission efficiency of more than 85%.