Multibeam Dual-Circularly Polarized Reflectarray for Connected and Autonomous Vehicles

Luo, Qi, Gao, Steven, Li, Wenting, Sobhy, Mohammed, Bakaimi, Ioanna, de Groot, CH Kees, Hayden, Brian, Reaney, Ian, Yang, Xuexia (2019) Multibeam Dual-Circularly Polarized Reflectarray for Connected and Autonomous Vehicles. IEEE Transactions on Vehicular Technology, 68 (4). pp. 3574-3585. ISSN 0018-9545. E-ISSN 1939-9359. (doi:10.1109/TVT.2019.2897218)

Abstract

This paper presents a multibeam dual-circularly polarized (CP) reflectarray for connected and autonomous vehicles. The developed reflectarray uses one aperture to realize dualband and multibeam operation. At each frequency band, there are two simultaneously shaped beams with different circular polarizations. Totally four beams are obtained with a single feed and each of the beams can be independently controlled. A simple but effective polarization suppression technique is introduced to suppress cross polarizations at large scan angles so the CP beam of the reflectarray can be configured to point at large angles. Thus, the present reflectarray is suitable to be applied to vehicles for reliable high data-rate satellite communications. To validate the design concept, an X-band prototype was designed, fabricated and measured. The design concept is flexible and can be applied to the design of dual-band, dual-CP reflectarray with different frequencies ratios. Moreover, the present design can also be extended to a continuous beam-steering design by incorporating phase shifters.

Item Type:	Article
DOI/Identification number:	10.1109/TVT.2019.2897218
Uncontrolled keywords:	vehicles, Satcom-on-the-Move, circular polarization, reflectarray, multibeam, dual-band
Divisions:	Faculties > Sciences > School of Engineering and Digital Arts
Depositing User:	Steven Gao
Date Deposited:	05 Feb 2019 15:31 UTC
Last Modified:	30 May 2019 08:53 UTC
Resource URI:	https://kar.kent.ac.uk/id/eprint/72188 (The current URI for this page, for reference purposes)