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Electronics
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Frequency Selective Surfaces and Printed Antennas
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Frequency Selective Surfaces and Printed Antennas

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

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 8788

Special Issue Editors

Prof. Dr. Iñigo Cuiñas

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Guest Editor
Dept. Teoría do Sinal e Comunicacións, University of Vigo, 36310 Vigo, Spain
Interests: radio wave propagation in complex environments; frequency selective surfaces; wireless communications
Prof. Dr. Luca Catarinucci

E-Mail Website
Guest Editor
Department of Innovation Engineering, University of Salento in Lecce, 73100 Lecce, Italy
Interests: RFID; sensors; antenna design; NFC; 3D-printing in RFID/Electronics
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Rafael F.S. Caldeirinha

E-Mail Website
Guest Editor
Instituto de Telecomunicações and Polytechnic Institute of Leiria, 2411-901 Leiria, Portugal
Interests: radiowave propagation through vegetation media; radio channel sounding and modeling and frequency selective surfaces; for applications at microwave and millimeter wave frequencies
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Designing user terminal antennas for 5G bands, mainly when the design includes several frequencies, is a must in the antenna research. New smartphone terminals, managing a variety of sub-6 GHz and millimeter wave frequencies, will arise in the market in the next semesters, and the antennas could be a bottleneck if their designs are not perfectly adapted to their application.

In parallel, and no less important, many research works focus on the design and construction of frequency selective surfaces. These elements provide control of the radio transparency of building materials, given the possibility of selective obstruction, and even blocking the radio waves propagating across them.

This Special Issue will present scholarly papers that address critical issues in the theory, design, manufacturing (use of new materials and manufacturing process), and measurements (such as fast near-field measurements) of both user terminal antennas and frequency selective surfaces at bands assigned to fifth generation networks.

Prof. Dr. Iñigo Cuiñas
Prof. Dr. Luca Catarinucci
Prof. Dr. Rafael F.S. Caldeirinha
Guest Editor

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 submissions that pass pre-check are 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 semimonthly 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 2400 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.

Keywords

  • Printed antenna
  • Frequency selective surface
  • Measurements
  • New materials and constructive models
  • 2D and 3D radiating structures
  • Millimeter waves

Published Papers (3 papers)

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Research

15 pages, 30454 KiB  
Article
Fractal Cardioid Slot Antenna for Super Wideband Applications
by Luka Lazović, Branka Jokanovic, Vesna Rubežić, Milos Radovanovic and Ana Jovanović
Electronics 2022, 11(7), 1043; https://doi.org/10.3390/electronics11071043 - 26 Mar 2022
Cited by 7 | Viewed by 2197
Abstract
A new geometry for uniplanar, ultra-wideband monopole antenna has been proposed for operations in the 1.8–30 GHz band, thanks to its fractal structure in the form of a cardioid. The antenna has extremely small dimensions at 0.21λ × 0.285λ at the [...] Read more.
A new geometry for uniplanar, ultra-wideband monopole antenna has been proposed for operations in the 1.8–30 GHz band, thanks to its fractal structure in the form of a cardioid. The antenna has extremely small dimensions at 0.21λ × 0.285λ at the lowest frequency of 1.8 GHz. A parametric analysis of the influence of certain antenna dimensions on its characteristics was performed in order to achieve the widest possible impedance bandwidth. This antenna is designed for low-cost FR-4 substrate because it is primarily intended for use in broadband energy harvesting and IoT systems, but it is also suitable for applications in communication systems. Simulation results show that the antenna has a reflection coefficient (S11) below −10 dB in the entire 1.8 GHz to 30 GHz frequency range, which covers all existing cellular bands: 3G, 4G, 5G Wi-Fi, ISM, satellite communication and radar bands. The antenna exhibits gains up to 5 dBi. Full article
(This article belongs to the Special Issue Frequency Selective Surfaces and Printed Antennas)
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12 pages, 2795 KiB  
Article
Dielectric Resonators Antennas Potential Unleashed by 3D Printing Technology: A Practical Application in the IoT Framework
by Francesco Paolo Chietera, Riccardo Colella and Luca Catarinucci
Electronics 2022, 11(1), 64; https://doi.org/10.3390/electronics11010064 - 26 Dec 2021
Cited by 19 | Viewed by 3076
Abstract
One of the most promising and exciting research fields of the last decade is that of 3D-printed antennas, as proven by the increasing number of related scientific papers. More specifically, the most common and cost-effective 3D printing technologies, which have become more and [...] Read more.
One of the most promising and exciting research fields of the last decade is that of 3D-printed antennas, as proven by the increasing number of related scientific papers. More specifically, the most common and cost-effective 3D printing technologies, which have become more and more widespread in recent years, are particularly suitable for the development of dielectric resonator antennas (DRAs), which are very interesting types of antennas exhibiting good gain, excellent efficiency, and potentially very small size. After a brief survey on how additive manufacturing (AM) can be used in 3D printing of antennas and how much the manufacturing process of DRAs can benefit from those technologies, a specific example, consisting of a wideband antenna operating at 2.4 GHz and 3.8 GHz, was deeply analyzed, realized, and tested. The obtained prototype exhibited compact size (60 × 60 × 16 mm3, considering the whole antenna) and a good agreement between measured and simulated S11, with a fractional bandwidth of 46%. Simulated gain and efficiency were also quite good, with values of 5.45 dBi and 6.38 dBi for the gain and 91% and 90% for the efficiency, respectively, at 2.45 GHz and 3.6 GHz. Full article
(This article belongs to the Special Issue Frequency Selective Surfaces and Printed Antennas)
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16 pages, 7434 KiB  
Article
Dual-Band Single-Layer Fractal Frequency Selective Surface for 5G Applications
by Bram Decoster, Stephanie Maes, Iñigo Cuiñas, Manuel García Sánchez, Rafael Caldeirinha and Jo Verhaevert
Electronics 2021, 10(22), 2880; https://doi.org/10.3390/electronics10222880 - 22 Nov 2021
Cited by 10 | Viewed by 2464
Abstract
Due to the global growth in popularity of Fifth Generation (5G) cellular communications, the demand for shielding against it has risen for a variety of applications, mainly related to cybersecurity but also to isolation, calm areas and so on. This research paper aims [...] Read more.
Due to the global growth in popularity of Fifth Generation (5G) cellular communications, the demand for shielding against it has risen for a variety of applications, mainly related to cybersecurity but also to isolation, calm areas and so on. This research paper aims to provide a suitable dual-band fractal FSS (Frequency Selective Surface) for the 5G lower band frequencies: 750 MHz and 3.5 GHz. The unit cell is in the shape of a bow tie, where each of the triangular parts are Sierpiński triangles. One major addition to the unit cell is a central metal strip to make the manufacturing of the FSS more feasible and to tune the operation frequencies and bandwidths. As with each different stage of a fractal antenna, the different stages of the fractal FSS design behave differently. For this application, stage 2 is sufficient, as we are able to cover frequency bands among those included in the FR1 5G spectrum. Some equations were derived using linear regression in order to provide specific design tools for building an FSS. These equations have high accuracy and can be used to adapt the proposed design to other frequencies. Some other parameters, which are not represented in the aforementioned equations, can also be adjusted for minor tweaking of the final design. This design performs well except under large incidence angles. This should be taken into account when proposing the installation of a structure based on it. A good agreement between simulation and measurement results is observed. Full article
(This article belongs to the Special Issue Frequency Selective Surfaces and Printed Antennas)
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