Special Issue "Antennas and Propagation Aspects for Emerging Wireless Communication Technologies"

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

Deadline for manuscript submissions: 31 March 2020.

Special Issue Editors

Guest Editor
Prof. Dr. Dimitra I. Kaklamani Website E-Mail
Microwave and Fiber Optics Laboratory, Intelligent Communications and Broadband Networks Laboratory, School of Electrical and Computer Engineering, National Technical University of Athens, 9 Heroon Polytechneiou str, Zografou, Athens 15780, Greece
Interests: Microwave Theory and Techniques, Microwave Systems, Computational Electromagnetism, Antennas, Wireless Communications, Radio Communications, Cellular Networks, Object-Oriented Computing, Distributed Processing, Security & Privacy
Guest Editor
Prof. Dr. Athanasios Panagopoulos Website E-Mail
School of Electrical and Computer Engineering, National Technical University of Athens, 9 Heroon Polytechneiou str, Zografou, Athens 15780, Greece
Interests: Wireless and satellite communication systems; radio communications; cellular networks; software defined radios and software-defined networks; optimization; channel modeling; cyber-physical systems; high-throughput radio systems
Guest Editor
Dr. Panagiotis Gkonis Website E-Mail
General Department, National and Kapodistrian University of Athens, Sterea Ellada, Dirfies Messapies, 106 79 Athens, Greece
Interests: Wireless communications; radio communications; cellular networks; MIMO systems; adaptive antennas; LTE; cross-layer design

Special Issue Information

Dear Colleagues,

The roadmap towards the design and implementation of next-generation broadband wireless networks is inextricably connected with the provision of even higher data rates to mobile users, delivery of zero latency multimedia content and the interconnection of heterogeneous services. The aim is to provide an environment in which sensors, appliances, cars, and drones will communicate with each other via the cellular network. In order to accommodate such communications, the cellular network has to dramatically increase its capacity. Recently, the wireless communications community has introduced the concept of 5G – a new generation of mobile wireless technology that will deliver multi-gigabit-per-second data speeds, with orders of magnitude more capacity and lower latency than today’s wireless systems. Numerous challenges lie ahead in the antenna and propagation fields such as low cost, intelligent antennas, and new radio propagation modeling and prediction techniques for future wireless networks must emerge to support the new frequency bands and wireless system architectures.

In this context, promising solutions include among others mmWave beamforming, massive MIMO techniques, and distributed antenna systems that shift today’s perception of wireless access networks (cellular structures with fixed base station locations) to a user or even service-oriented approach.

The main aim of this Special Issue is to seek high-quality submissions that highlight emerging applications and address recent breakthroughs in the design and implementation of advanced antenna components and novel propagation models in order to support high data rate transmission in the context of 5G and satellite networks and also the accurate evaluation of the new architectures.

Topics of interest include, but are not limited to the following:

  • Multi-beam antenna technologies for 5G wireless communications
  • Millimeter wave (mmWave) and THz antennas for 5G wireless communications
  • Propagation model at mmWave and THz bands
  • Compact antenna arrays for massive MIMO systems
  • mmWave and large-scale MIMO channel model
  • Antennas for implantable systems and IoT applications
  • Advanced antennas and transceivers for full-duplex communication
  • Distributed antenna systems for 5G multi-user networks
  • mmWave and THz cooperative relays for coverage extension

Prof. Dr. Dimitra I. Kaklamani
Prof. Dr. Athanasios Panagopoulos
Dr. Panagiotis Gkonis
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Electronics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (3 papers)

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Research

Open AccessFeature PaperArticle
Spectrum Occupancy Measurements and Analysis in 2.4 GHz WLAN
Electronics 2019, 8(9), 1011; https://doi.org/10.3390/electronics8091011 - 10 Sep 2019
Abstract
High time resolution spectrum occupancy measurements and analysis are presented for 2.4 GHz WLAN signals. A custom-designed wideband sensing engine records the received power of signals, and its performance is presented to select the decision threshold required to define the channel state (busy/idle). [...] Read more.
High time resolution spectrum occupancy measurements and analysis are presented for 2.4 GHz WLAN signals. A custom-designed wideband sensing engine records the received power of signals, and its performance is presented to select the decision threshold required to define the channel state (busy/idle). Two sets of measurements are presented where data were collected using an omni-directional and directional antenna in an indoor environment. Statistics of the idle time windows in the 2.4 GHz WLAN are analyzed using a wider set of distributions, which require fewer parameters to compute and are more practical for implementation compared to the widely-used phase type or Gaussian mixture distributions. For the omni-directional antenna, it was found that the lognormal and gamma distributions can be used to model the behavior of the idle time windows under different network traffic loads. In addition, the measurements show that the low time resolution and angle of arrival affect the statistics of the idle time windows. Full article
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Open AccessArticle
Time Domain Performance of Reconfigurable Filter Antenna for IR-UWB, WLAN, and WiMAX Applications
Electronics 2019, 8(9), 1007; https://doi.org/10.3390/electronics8091007 - 09 Sep 2019
Abstract
A novel reconfigurable filter antenna with three ports for three dependent switchable states for impulse radio-ultrawideband (IR-UWB)/wireless local area network (WLAN)/worldwide interoperability for microwave access (WiMAX) applications is presented in this paper. Three positive-intrinsic-negative diodes, controlled by direct current, are employed to realize [...] Read more.
A novel reconfigurable filter antenna with three ports for three dependent switchable states for impulse radio-ultrawideband (IR-UWB)/wireless local area network (WLAN)/worldwide interoperability for microwave access (WiMAX) applications is presented in this paper. Three positive-intrinsic-negative diodes, controlled by direct current, are employed to realize frequency reconfiguration of one ultra-wideband state and two narrowband states (2.4 GHz and 3.5 GHz). The time domain characteristic of the proposed antenna in the ultra-wideband state is studied, because of the features of the IR-UWB system. The time domain analysis shows that the reconfigurable filtering antenna in the wideband state performs similarly to the original UWB antenna. The compact size, low cost, and expanded reconfigurable filtering features make it suitable for IR-UWB systems that are integrated with WLAN/WiMAX communications. Full article
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Open AccessArticle
A Low-Cost CPW-Fed Multiband Frequency Reconfigurable Antenna for Wireless Applications
Electronics 2019, 8(8), 900; https://doi.org/10.3390/electronics8080900 - 14 Aug 2019
Abstract
A novel, cedar-shaped, coplanar waveguide-fed frequency reconfigurable antenna is proposed. The presented antenna uses low-cost FR4 substrate with a thickness of 1.6 mm. Four PIN diodes are inserted on the antenna surface to variate the current distribution and alter the resonant frequencies with [...] Read more.
A novel, cedar-shaped, coplanar waveguide-fed frequency reconfigurable antenna is proposed. The presented antenna uses low-cost FR4 substrate with a thickness of 1.6 mm. Four PIN diodes are inserted on the antenna surface to variate the current distribution and alter the resonant frequencies with different combinations of switches. The proposed antenna is fabricated and measured for all states, and a good agreement is seen between measured and simulated results. This antenna resonates within the range of 2 GHz to 10 GHz, covering the major wireless applications of aviation service, wireless local area network (WLAN), worldwide interoperability for microwave access (WiMAX), long distance radio telecommunications, and X-band satellite communication. The proposed antenna works resourcefully with reasonable gain, significant bandwidth, directivity, and reflection coefficient. The proposed multiband reconfigurable antenna will pave the way for future wireless communications including WLAN, WiMAX, and possibly fifth-generation (5G) communication. Full article
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