MIMO Antennas

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Microwave and Wireless Communications".

Deadline for manuscript submissions: 15 August 2024 | Viewed by 3499

Special Issue Editor


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Guest Editor
School of Engineering and the Built Environment, Edinburgh Napier University, Edinburgh EH10 5DT, UK
Interests: MIMO/diversity antennas; 5G/6G antennas; MM-wave phased arrays; multi-band/UWB antennas; RFID antennas; metamaterials and metasurfaces; Fabry resonators; fractal antennas; band-pass/band-stop microwave filters; reconfigurable structures; power amplifiers; electromagnetic wave propagation
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Special Issue Information

Dear Colleagues,

With the development of wireless communications, multiple-input multiple-output (MIMO) technology has been attracting much more attention for various applications. MIMO technology can exponentially increase the data transfer rate, spectrum efficiency, and link reliability of wireless systems without any need to increase the transmission power. It is a key component and the most promising technology to truly reach the promised transfer data rates of 5G and 6G communications. In addition, MIMO antennas are very attractive for future smart devices due to their ability to increase network capacity and coverage. In MIMO systems, various multiple antenna elements are deployed at the sending and receiving units to provide high spectral and energy efficiency using relatively simple processing. The greater number of antennas can make the system more resistant to jamming and interference. Due to the large number of elements and limited spaces, proximity, and operations, strict requirements are imposed on the design of antennas in MIMO systems, which poses significant challenges.

The objective of this Special Issue is to cover all aspects of MIMO antennas. It aims to highlight recent advances, current trends, and future developments of MIMO antenna design and techniques. We invite researchers to submit their original research or review papers that are concerned with novel design techniques, analysis, optimization, and experimental results in this area. Submissions can focus on conceptual and applied research in topics including but not limited to the following:

  • MIMO antenna design;
  • 5G/6G MIMO antennas;
  • Wearable MIMO antennas;
  • Integrated MIMO antennas;
  • MIMO antenna optimization;
  • MM-wave/THz MIMO antennas;
  • Reconfigurable MIMO antennas;
  • MIMO antennas for smartphones;
  • Antenna design for massive MIMO;
  • Adaptive and smart MIMO antennas;
  • Transmission and detection techniques;
  • Large-scale and massive MIMO systems;
  • Models for MIMO propagation channels;
  • Diversity techniques in MIMO antennas;
  • AI-empowered MIMO antenna systems;
  • Decoupling techniques of MIMO antennas;
  • Channel capacity estimation of MIMO systems;
  • Intelligent surfaces for MIMO communications;
  • Phased array and beamforming MIMO antennas;
  • Angle of arrival estimation using MIMO antennas;
  • Signal processing of MIMO antennas and systems;
  • Metamaterial/Metasurface-inspired MIMO systems;
  • Prototyping and experimentation of MIMO antennas.

Submissions should reflect the high quality of this international journal and should not have been submitted or published elsewhere. Extended versions of conference papers that show significant improvement (minimal of over 50%) can be considered for publication in this Special Issue.

Dr. Naser Ojaroudi Parchin
Guest Editor

Manuscript Submission Information

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Keywords

  • MIMO
  • antennas
  • MIMO communications
  • 5G/6G

Published Papers (3 papers)

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Research

20 pages, 11107 KiB  
Article
Electrical Performance Compensation of Reflector Antenna Based on Sub-Reflector Array
by Jie Zhang, Xiangpeng Kong, Chuyun Zhang, Yifan Gao and Qiang He
Electronics 2023, 12(23), 4771; https://doi.org/10.3390/electronics12234771 - 24 Nov 2023
Cited by 1 | Viewed by 753
Abstract
Large high-frequency reflector antennas typically operate outdoors and are impacted by environmental factors such as wind, rain, snow, solar radiation, etc. These conditions cause the antenna structures to distort, which, in turn, affects electrical performance. The observation performance of the antenna is seriously [...] Read more.
Large high-frequency reflector antennas typically operate outdoors and are impacted by environmental factors such as wind, rain, snow, solar radiation, etc. These conditions cause the antenna structures to distort, which, in turn, affects electrical performance. The observation performance of the antenna is seriously affected. To solve this problem, based on the active control of sub-reflector arrays, an optimization method for sub-reflector arrays and an active compensation method for electrical performance are proposed. Through real-time regulation of the phase plane of the distorted aperture field, the electrical performance of the antenna can be compensated for. The research object, a 65 m Cassegrain dual-reflector antenna, is designed in this work using a sub-reflector with an aperture of 6.1 m. The form and posture of the sub-reflector are comprehensively changed by adjusting the position of the sub-reflector panel and the overall movement of the sub-reflector, and the phase inaccuracy of the aperture field brought by the deformation of the main reflector is compensated for. The simulation results demonstrate that the maximum gain loss can be reduced from 0.44315 dB to 0.0803 dB and the maximum point error can be reduced from 0.00143° to 0.00047° under wind load with an average wind speed of 12 m/s using the active sub-reflector array adjustment strategy proposed. Full article
(This article belongs to the Special Issue MIMO Antennas)
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14 pages, 3719 KiB  
Article
Ten-Port MIMO Inverted-F Antenna for LTE Bands 43/48/49 Bands Smartphone Applications
by Muhammad Zahid, Aliya Khalid, Hira Moazzam, Hajra Sadaqat, Sultan Shoaib and Yasar Amin
Electronics 2023, 12(19), 4005; https://doi.org/10.3390/electronics12194005 - 22 Sep 2023
Cited by 2 | Viewed by 916
Abstract
This paper presents a design and performance analysis of a 10-element 5G massive Multiple Input Multiple Output (m-MIMO) antenna array for sub-6 GHz mobile handsets, specifically for Long Term Evolution (LTE) bands 43 (3600–3800 MHz) and 48/49 (3550–3700 MHz) applications. The proposed antenna [...] Read more.
This paper presents a design and performance analysis of a 10-element 5G massive Multiple Input Multiple Output (m-MIMO) antenna array for sub-6 GHz mobile handsets, specifically for Long Term Evolution (LTE) bands 43 (3600–3800 MHz) and 48/49 (3550–3700 MHz) applications. The proposed antenna array consists of ten closely spaced inverted-F antennas with a compact size of 20 × 9 mm2 of a single element. The proposed antenna array provides high efficiency and low correlation between the antenna elements, which result in increased data rate and enhanced signal quality. The performance of the antenna array is evaluated in terms of the radiation pattern, diversity gain, efficiency, and correlation coefficient. The simulation and measured results show that the proposed antenna array achieves an approximate peak gain of 2.8 dBi and a total efficiency of 65% at the resonance frequency of 37 GHz and a low correlation coefficient of 0.07 between the adjacent antenna elements. Moreover, the single and two-hand modes are also given in order to highlight the potential of such a structure as a smart mobile terminal. The simulated results are discovered to be in excellent agreement with the measured values. We think this structure has a bright future in the next generation of smart mobile phones based on the performance and the measured findings. Full article
(This article belongs to the Special Issue MIMO Antennas)
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13 pages, 2737 KiB  
Article
Controllable Local Propagation Environment to Maximize the Multiplexing Capability of Massive MIMO Systems
by Daniele Pinchera, Mario Lucido, Gaetano Chirico, Fulvio Schettino and Marco Donald Migliore
Electronics 2023, 12(9), 2022; https://doi.org/10.3390/electronics12092022 - 27 Apr 2023
Cited by 1 | Viewed by 1161
Abstract
The capability of controlling and modifying wireless propagation channels is one of the prerogatives of beyond-5G systems. In this paper, we propose the use of a controllable local propagation environment surrounding the terminals, and analyze its positive effect on the multiplexing capability of [...] Read more.
The capability of controlling and modifying wireless propagation channels is one of the prerogatives of beyond-5G systems. In this paper, we propose the use of a controllable local propagation environment surrounding the terminals, and analyze its positive effect on the multiplexing capability of massive MIMO systems. In particular, we focus on using a few switched passive elements surrounding each terminal. In this way, the modification of the propagation environment is not realized by means of a single structure, as in reconfigurable intelligent surfaces (RIS), but is achieved by the cooperative work of all the terminals. By employing numerical simulations, we show that the proposed system outperforms its non-reconfigurable counterpart in terms of the number of contemporary connected users. Moreover, the optimized system enables a substantial increase in the minimum received power by the terminals, thus guaranteeing superior channel fairness. Full article
(This article belongs to the Special Issue MIMO Antennas)
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