Advanced Antenna Array Technologies and Applications

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Electrical, Electronics and Communications Engineering".

Deadline for manuscript submissions: 20 October 2024 | Viewed by 659

Special Issue Editors


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Guest Editor
CMEMS–UMinho, University of Minho, 4800-058 Guimarães, Portugal
Interests: microsystems; RF microelectronics; wireless sensor networks; biomedical devices; antennas; neural interfaces; wireless power
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Guest Editor
Affiliation CMEMS–UMinho, University of Minho, 4800-058 Guimarães, Portugal
Interests: machine learning; medical image segmentation

E-Mail Website
Guest Editor
CMEMS–UMinho, University of Minho, 4800-058 Guimarães, Portugal
Interests: RF and microwave devices; electromagnetic engineering

Special Issue Information

Dear Colleagues,

Wireless communications are a fundamental component of modern society. Antenna arrays play an important role in this field, as they provide a vast set of advantages such as high directivity and adaptive beamforming to improve the wireless link. Antenna arrays are employed in several applications such as 5G, MIMO, GNSS for autonomous vehicles, wireless power transfer, radar, and satellite, aerospace, and mobile communications. Antenna arrays prove to be essential even for military and safety applications, through, for example, null-pointing operations to mitigate interferences, both accidental and intentional. With the increase of computational power of modern systems, complex algorithms which were unfeasible in the past become real possibilities to improve antenna array performances. This, in turn, can pave the way for sizeable advancements in this technology and its applications, using recent advances in the fields of, for example, artificial intelligence, RF circuits, additive manufacturing, and graphene.

Authors are invited to submit to this Special Issue their contributions to the advancement of antenna array technology, from the development of novel antenna elements and arrays, to control algorithms and electronics, applications of antenna arrays, and so on. Both theoretical and experimental studies are welcome, as well as review and tutorial papers.

Dr. Paulo M. Mendes
Dr. Carlos Lima
Dr. Hugo Daniel da Costa Dinis
Guest Editors

Manuscript Submission Information

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Published Papers (1 paper)

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Research

16 pages, 7501 KiB  
Article
Dual-Band Frequency Selective Surface-Backed Reflectarray for High-Speed Ka-Band Satellites
by Ahmet Hulusi Gülseren, Aytaç Alparslan and Nurhan Türker Tokan
Appl. Sci. 2024, 14(7), 2928; https://doi.org/10.3390/app14072928 - 30 Mar 2024
Viewed by 460
Abstract
A dual-band, dual-polarized frequency selective surface (FSS)-backed multilayer reflectarray antenna is designed for 5G high-speed satellites operating at Ka-band uplink and downlink frequencies (20/30 GHz). A reflectarray antenna system consists of two reflectarrays that are separated from each other by an FSS layer [...] Read more.
A dual-band, dual-polarized frequency selective surface (FSS)-backed multilayer reflectarray antenna is designed for 5G high-speed satellites operating at Ka-band uplink and downlink frequencies (20/30 GHz). A reflectarray antenna system consists of two reflectarrays that are separated from each other by an FSS layer that behaves as a planar bandpass filter at Ka-band satellite uplink frequencies. Each reflectarray antenna is designed with dual-polarized unit cells. In order to achieve a uniform phase distribution across the reflectarray surface, physical dimensions and positions of the unit cells with a fixed periodicity are carefully chosen. The FSS conductor is etched to the bottom layer of the 30 GHz reflectarray substrate to save cost and weight. The reflectarray performance is analyzed by using CST Microwave Studio and array theory. A prototype is fabricated, and the results are experimentally verified. The gain of the reflectarray is measured as 21.13 dBi and 26.94 dBi at 20 and 30 GHz, respectively. A crosspol level of more than 35 dB is observed at both frequencies. The simulated and measured results show that the proposed reflectarray is suitable for high-speed Ka-band satellites. Full article
(This article belongs to the Special Issue Advanced Antenna Array Technologies and Applications)
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