Antennas and Propagation for Mobile Communication Systems

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: closed (12 January 2022) | Viewed by 3668

Special Issue Editor


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Guest Editor
Departamento de Tecnologías de la Informción y las Comunicaciones, Universidad Politécnica de Cartagena, E30202 Cartagena (Murcia), Spain
Interests: antenna design; electromagnetic dosimetry; EMR exposure; microwave heating

Special Issue Information

Dear Colleagues,

The imminent emergence of 5G technology in mobile communications systems is posing a new demanding challenge in antenna design that must take into account the particularities of both the different propagation channels and the physical space available in the terminal for the antennas. In fact, design priorities always attend to commercial aspects that make it more attractive rather than to the space needs for the antenna, which in turn must respond to an increasingly demanding compatibility of standards: Bluetooth, Wi-Fi, 4G/5G, GPS.

The antennas used in this technology can be classified into outdoor antennas such as fixed-base stations, indoor antennas with omnidirectional coverage, and small low-profile antennas for mobile devices. The increase in mobile data traffic given in this next 5G generation will lead to the improvement of techniques already known or the implementation of new ones such as the use of multibeam antennas, which means an increase in coverage. Likewise, miniaturization techniques, group optimization, MIMO systems, bandwidth improvements, among others, acquire great importance. In the future, 6G will have a wider frequency band, higher transmission rate, improved spectrum efficiency, greater connection capacity, shorter delay, wider coverage, and stronger anti-interference capability to satisfy various network requirements.

This Special Issue aims to collect relevant papers describing the latest advances and prospects in antenna design for mobile communications. You are cordially invited to submit a contribution of either an original research or a review article to this Special Issue.

Prof. Dr. Antonio Manuel Martínez González
Guest Editor

Manuscript Submission Information

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Keywords

  • mobile communications
  • antenna design
  • radioelectric propagation
  • 4G/5G
  • MIMO systems
  • chanel characterization
  • reverberation chamber
  • beamforming
  • base station
  • measurements techniques
  • electromagnetic compatibility
  • regulatory issues
  • EMF exposure
  • multi-beam antenna technologies
  • distributed antenna systems

Published Papers (2 papers)

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Research

13 pages, 3623 KiB  
Article
On the Spectral Efficiency for Distributed Massive MIMO Systems
by Alejandro Ramírez-Arroyo, Juan Carlos González-Macías, Jose J. Rico-Palomo, Javier Carmona-Murillo and Antonio Martínez-González
Appl. Sci. 2021, 11(22), 10926; https://doi.org/10.3390/app112210926 - 18 Nov 2021
Viewed by 1525
Abstract
Distributed MIMO (D-MIMO) systems are expected to play a key role in deployments for future mobile communications. Together with massive MIMO technology, D-MIMO aims to maximize the spectral efficiency and data rate in mobile networks. This paper proposes a deep study on the [...] Read more.
Distributed MIMO (D-MIMO) systems are expected to play a key role in deployments for future mobile communications. Together with massive MIMO technology, D-MIMO aims to maximize the spectral efficiency and data rate in mobile networks. This paper proposes a deep study on the spectral efficiency of D-MIMO systems for essential channel parameters, such as the channel power balance or the correlation between propagation channels. For that purpose, several propagation channels were acquired in both anechoic and reverberation chambers and were emulated using channel simulators. In addition, several frequency bands were studied, both the sub–6 GHz band and mmWave band. The results of this study revealed the high influence of channel correlation and power balance on the physical channel performance. Low-correlated and high-power balance propagation channels show better performances than high correlated and power unbalance channels in terms of spectral efficiency. Given these results, it will be fundamental to take into account the spectral efficiency of D-MIMO systems when designing criteria to establish multi-connectivity in future mobile network deployments. Full article
(This article belongs to the Special Issue Antennas and Propagation for Mobile Communication Systems)
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14 pages, 1903 KiB  
Article
Enhanced Efficiency and Reduced Side Lobe Level Convex Conformal Reflectarray
by Michele Beccaria, Giuseppe Addamo, Mario Orefice, Oscar Peverini, Diego Manfredi, Flaviana Calignano, Giuseppe Virone and Paola Pirinoli
Appl. Sci. 2021, 11(21), 9893; https://doi.org/10.3390/app11219893 - 22 Oct 2021
Cited by 5 | Viewed by 1413
Abstract
In this work, the design of a convex conformal reflectarray (CRA), suitable to be used for high gain on board antenna in mobile communication systems, is presented. The reflector is not planar, as in usual reflectarray configurations, but the re-radiating elements are printed [...] Read more.
In this work, the design of a convex conformal reflectarray (CRA), suitable to be used for high gain on board antenna in mobile communication systems, is presented. The reflector is not planar, as in usual reflectarray configurations, but the re-radiating elements are printed on a surface conformed to a cylinder to mimic a curved surface, such as the fuselage of an airplane, on which the reflectarray could be mounted. To compensate for the loss in efficiency due to the curvature, an ad hoc feed is designed; the results obtained with the simulation of the entire structure and the measurements of its prototype prove the effectiveness of the design procedure and its capability in enhancing the CRA features, in comparison with similar but more conventional solutions. Full article
(This article belongs to the Special Issue Antennas and Propagation for Mobile Communication Systems)
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