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A Dynamic Beamforming at 5.4 GHz: Design and Validation of an Integrated Metasurface Reflectarray-Horn Antenna System for Wireless Communications

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Title: A Dynamic Beamforming at 5.4 GHz: Design and Validation of an Integrated Metasurface Reflectarray-Horn Antenna System for Wireless Communications
Authors: Fatih Özkan Alkurt, Volkan Akdoğan, Olcay Altintaş, Muharrem Karaaslan, Merih Palandöken, Emin Ünal, Lulu Wang
Contributors: Havacılık ve Uzay Bilimleri Fakültesi -- Havacılık Elektrik ve Elektroniği Bölümü, Mühendislik ve Doğa Bilimleri Fakültesi -- Elektrik-Elektronik Mühendisliği Bölümü, Alkurt, Fatih Özkan, Akdoğan, Volkan, Altıntaş, Olcay, Karaaslan, Muharrem
Source: Arabian Journal for Science and Engineering. 50:5825-5834
Publisher Information: Springer Science and Business Media LLC, 2024.
Publication Year: 2024
Subject Terms: Phase tuning, Metasurface, Reflector antennas, Electronically steerable reflectarrays, Phase control, Reflectarray, Reconfigurable reflectarray, Beamforming, Digital beamforming, Electrical Engineering, Electronics & Computer Science - Wireless Technology - Metamaterials, Antenna miniaturization, Dielectrics, Scattering control, Antenna Arrays
Description: This paper presents the comprehensive design, analysis, and evaluation of a metasurface reflectarray structure integrated with a feeding horn antenna specifically tailored for 5.4 GHz wireless communications, especially for beamforming applications. The reflectarray is modelled as a 10 × 10 array size comprising 100 individual unit cells, and each cell is equipped with a control varicap utilized for manipulating the reflection phase and generating variously reflected beamformers. A broadband horn antenna, meticulously designed to feed the reflectarray, is also modelled and analysed at the operating frequency. Integrating both the horn antenna and designed reflectarray creates beam control through the dynamic variation of reverse biasing voltage applied to capacitors located on each unit cell. The scientific importance of the electronically tunable reflectarray design is the technical requirement of controlling the reflected beams, for the realization of flat panel satellite communication systems demanding flexible beamforming capabilities. The designed reflectarray has been fabricated and experimentally validated by the free space measurements to confirm the design approach. The radiation pattern characteristics under different reflection configurations exhibit excellent agreement with the simulated results, providing robust evidence of the reflectarray's performance. The successful experimental validation reinforces the potential of this integrated system, promising greater flexibility and performance for future communication systems that require advanced beam-steering capabilities.
Document Type: Article
File Description: application/pdf
Language: English
ISSN: 2191-4281
2193-567X
DOI: 10.1007/s13369-024-09624-z
Access URL: https://hdl.handle.net/20.500.12508/3226
Rights: Springer Nature TDM
Accession Number: edsair.doi.dedup.....5ab1f9f8faddca5eb277ce35c2941bcc
Database: OpenAIRE
Description
Abstract:This paper presents the comprehensive design, analysis, and evaluation of a metasurface reflectarray structure integrated with a feeding horn antenna specifically tailored for 5.4 GHz wireless communications, especially for beamforming applications. The reflectarray is modelled as a 10 × 10 array size comprising 100 individual unit cells, and each cell is equipped with a control varicap utilized for manipulating the reflection phase and generating variously reflected beamformers. A broadband horn antenna, meticulously designed to feed the reflectarray, is also modelled and analysed at the operating frequency. Integrating both the horn antenna and designed reflectarray creates beam control through the dynamic variation of reverse biasing voltage applied to capacitors located on each unit cell. The scientific importance of the electronically tunable reflectarray design is the technical requirement of controlling the reflected beams, for the realization of flat panel satellite communication systems demanding flexible beamforming capabilities. The designed reflectarray has been fabricated and experimentally validated by the free space measurements to confirm the design approach. The radiation pattern characteristics under different reflection configurations exhibit excellent agreement with the simulated results, providing robust evidence of the reflectarray's performance. The successful experimental validation reinforces the potential of this integrated system, promising greater flexibility and performance for future communication systems that require advanced beam-steering capabilities.
ISSN:21914281
2193567X
DOI:10.1007/s13369-024-09624-z