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Advanced Antenna Systems and Techniques for 6G and Beyond Wireless Communications

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Communications".

Deadline for manuscript submissions: 30 November 2024 | Viewed by 932

Special Issue Editor


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Guest Editor
Department of Signal Theory and Communications, Universidad Carlos III de Madrid, 28911 Leganés, Spain
Interests: antenna design; gap waveguide technology; EBG; optimization techniques

Special Issue Information

Dear Colleagues,

The capabilities, features and technologies of the upcoming 6G networks are currently being investigated. The effective integration and cost of these radio elements will condition the future capabilities of these systems that will surely combine sensing, computing and communication functions. In this changing environment, it is necessary to develop and improve solutions and technologies, but also to solve open research problems and make the co-design of these elements more flexible. Efficient energy systems will be required that allow the multiband, multibeam and multilayer operation of the antennas, as well as the use of complementary elements such as intelligent surfaces or adaptive massive MIMO environments. The complexity in the electromagnetic design of these systems requires the improvement of advanced tools and techniques such as multi-objective optimization and hybrid integration models, which are an essential focus on the roadmap towards 6G networks.

  • Advanced multi-function antennas for 6G;
  • Shared-aperture antennas, filtering and diplexed antennas;
  • New topologies and intelligent surfaces for 6G;
  • Transparent or textile devices;
  • Multi-objective optimization and systems;
  • IoT and MIMO antennas for 6G communications and decoupling systems;
  • Cost-effective antennas for sensing, multiband and multibeam applications;
  • Integrated sensing and communication devices.

Prof. Dr. Luis Inclán-Sánchez
Guest Editor

Manuscript Submission Information

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Keywords

  • antenna systems
  • multifunction
  • multiband
  • intelligent surfaces
  • multi-objective optimization

Published Papers (1 paper)

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Research

19 pages, 18339 KiB  
Article
A Low-Profile Circularly Polarized Millimeter-Wave Broadband Antenna Analyzed with a Link Budget for IoT Applications in an Indoor Scenario
by Parveez Shariff Bhadravathi Ghouse, Pallavi R. Mane, Tanweer Ali, Goutham Simha Golapuram Dattathreya, Sudheesh Puthenveettil Gopi, Sameena Pathan and Jaume Anguera
Sensors 2024, 24(5), 1569; https://doi.org/10.3390/s24051569 - 29 Feb 2024
Viewed by 654
Abstract
Broadband antennas with a low-profile generating circular polarization are always in demand for handheld/ portable devices as CP antennas counter multipath and misalignment issues. Therefore, a compact millimeter-wave antenna is proposed in this article. The proposed antenna structure comprises two circular rings and [...] Read more.
Broadband antennas with a low-profile generating circular polarization are always in demand for handheld/ portable devices as CP antennas counter multipath and misalignment issues. Therefore, a compact millimeter-wave antenna is proposed in this article. The proposed antenna structure comprises two circular rings and a circular patch at the center. This structure is further embedded with four equilateral triangles at a 90° orientation. The current entering the radiator is divided into left and right circular directions. The equilateral triangles provide the return path for current at the differential phase of ±90°, generating circular polarization. Structural development and analysis were initially performed through the characteristic mode theory. It showed that Modes 1 to 4 generated good impedance matching from 20 to 30 GHz and Modes 1 to 5, from 30 to 40 GHz. It also demonstrated the summation of orthogonal modes leading to circular polarization. The antenna-measured reflection coefficient |S11| > 10 dB was 19 GHz (23–42 GHz), and the axial ratio at −3 dB was 4.2 GHz (36–40.2 GHz). The antenna gain ranged from 4 to 6.2 dBi. The proposed antenna was tested for link margin estimation for IoT indoor conditions with line-of-sight (LOS) and non-line-of-sight (NLOS) conditions. The communication reliability with co- and cross-polarization was also studied under these conditions, and the results proved to be satisfactory. Full article
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