Wen, L;
Sanz-Izquierdo, B;
Gao, S;
Wong, KK;
Tong, KF;
(2023)
Wideband Metamaterial Crossed-Arm Unit Cell for the Design of Beam-Scanning Circularly Polarized Reflectarray Antenna.
In:
Proceedings of 2023 IEEE MTT-S International Wireless Symposium, IWS 2023.
IEEE: Qingdao, China.
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Abstract
This paper presents a reconfigurable metamaterial unit cell using crossed arms and its application in designing a wideband beam-scanning circularly polarized (CP) reflectarray (RA) antenna. The unit cell is comprised of two pairs of reconfigurable rotated crossed-arms. One pair is connected by two line strips, and the other pair is connected by two arc-shaped strips. The unit cell is verified with a broad CP reflection bandwidth of 7.7-15.5 GHz. An equivalent circuit is utilized to illustrate its working principle for wide CP reflection bandwidth. Based on this meta material unit cell, a broadband RA antenna was designed, developed, and tested for the initial CP performance verification. A high gain of 26.3 dBic with the maximum aperture efficiency of 58.3 % is obtained for this fabricated RA antenna. In addition, a broad CP bandwidth (from 7.6 GHz to 15.9 GHz) for axial ratio <3 dB is achieved for the high gain unidirectional CP radiation.
| Type: | Proceedings paper |
|---|---|
| Title: | Wideband Metamaterial Crossed-Arm Unit Cell for the Design of Beam-Scanning Circularly Polarized Reflectarray Antenna |
| Event: | 2023 IEEE MTT-S International Wireless Symposium (IWS) |
| Dates: | 14 May 2023 - 17 May 2023 |
| ISBN-13: | 9798350336535 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/IWS58240.2023.10222486 |
| Publisher version: | https://doi.org/10.1109/IWS58240.2023.10222486 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Wireless communication, Antenna measurements, Reflector antennas, Reflection, Metamaterials, Broadband communication, Broadband antennas |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10177794 |
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