The design and analysis of electronically reconfigurable liquid crystal-based reflectarray metasurface for 6G beamforming, beamsteering, and beamsplitting

Meng, Xiaomin, Nekovee, Maziar and Wu, Dehao (2021) The design and analysis of electronically reconfigurable liquid crystal-based reflectarray metasurface for 6G beamforming, beamsteering, and beamsplitting. IEEE Access, 9. pp. 155564-155575. ISSN 2169-3536

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Abstract

Reconfigurable intelligent surfaces (RISs) are becoming increasingly popular in the field of wireless communications, given their potential to ameliorate the challenges faced in millimeter-wave wireless communications. Specifically, liquid crystal (LC)-based RISs have demonstrated numerous advantages over other types of RISs in terms of cost, complexity, and radiation efficiency in the high-frequency regime. This paper presents the design, algorithms, implementation routines, and simulation of a novel reconfigurable LC-based reflectarray metasurface operating at 108 GHz. The scanning range of the proposed device is ±40 (azimuthally and horizontally), with an average scanning beamwidth of 8.6. We present semi-analytical findings on the scalability and phase continuity of our design, showing how key performance indicators (KPIs) are affected by dimension and phase degree-of-freedom changes. We demonstrate agreement between our semi-analytical models and full-wave analysis, focusing on genetic algorithm (GA)-optimized beam manipulations. Our results present a feasible workflow that enables dynamic beamforming, beamsteering, and multibeams at 108 GHz, and is easily scalable for applications in other 6G and beyond frequency spectra.

Item Type: Article
Additional Information: Special section on Reconfigurable intelligent surface aided communications for 6G and beyond
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Research Centres and Groups: Advanced Communications, Mobile Technology and IoT (ACMI)
Subjects: Q Science > QC Physics > QC0501 Electricity and magnetism
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication
Depositing User: Xiaomin Meng
Date Deposited: 26 Jan 2022 09:12
Last Modified: 26 Jan 2022 09:15
URI: http://sro.sussex.ac.uk/id/eprint/103947

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