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Applied Sciences
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State-of-the-Art Frequency Selective Surfaces (FSSs)
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State-of-the-Art Frequency Selective Surfaces (FSSs)

A special issue of Applied Sciences (ISSN 2076-3417).

Deadline for manuscript submissions: closed (30 April 2019) | Viewed by 26040

Special Issue Editors

Dr. William Whittow

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Guest Editor
Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, UK
Interests: 3D printing; antennas; artificial dielectrics; dielectric property measurements; embroidered antennas; energy harvesting; heterogeneous substrates; implanted antennas; inkjet printing; metamaterials; metasurfaces; RFID tags; specific absorption rates (SAR); wearable antennas
Special Issues, Collections and Topics in MDPI journals
Dr. Syed Bukhari

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Guest Editor
Department of Materials, University of Oxford, Wellington Square, Oxford OX1 2JD, UK
Interests: metasurfaces; metamaterials; 3D printing; dielectric characterisation

Special Issue Information

Dear Colleagues,

Electromagnetics is an area of rapid growth, with applications ranging from the internet of things to sensing and imaging. Wireless communication is an area that affects everyone’s lives without their noticing. The science and engineering behind this technology goes over the heads of many, but some of us stop and think “How could we make this better?”

This Special Issue of the journal Applied Sciences “Frequency Selective Surfaces” aims to cover recent advances in the development of FSS. This includes topics such as 3D-printing and new manufacturing techniques; conformal FSS; reconfigurable FSS; novel applications of FSS; numerical analysis; FSS at high mm-wave and low THz frequencies; and polarization-dependent FSS. 

Dr. William Whittow
Dr. Syed Bukhari
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 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. Applied Sciences 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

  • Frequency selective surfaces
  • FSS
  • metasurfaces
  • metamaterials

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Published Papers (3 papers)

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Research

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28 pages, 1892 KiB  
Article
Generalized Boundary Conditions in Surface Electromagnetics: Fundamental Theorems and Surface Characterizations
by Xiao Liu, Fan Yang, Maokun Li and Shenheng Xu
Appl. Sci. 2019, 9(9), 1891; https://doi.org/10.3390/app9091891 - 8 May 2019
Cited by 45 | Viewed by 4955
Abstract
Generalized boundary conditions (GBCs) for electromagnetic surfaces are investigated in this paper, which can be used to analytically characterize field discontinuities across two-dimensional surfaces. First, five representative features are described to categorize various surface problems which require proper GBC-based characterization procedures. Next, the [...] Read more.
Generalized boundary conditions (GBCs) for electromagnetic surfaces are investigated in this paper, which can be used to analytically characterize field discontinuities across two-dimensional surfaces. First, five representative features are described to categorize various surface problems which require proper GBC-based characterization procedures. Next, the generalized boundary conditions are discussed in details, in association with impedance boundary conditions, generalized sheet transition conditions, and surface scattering coefficients. Then an extraction method for surface susceptibilities, the characteristic parameters of surfaces in GBCs, are proposed and validated. Finally, to illustrate the applications of GBCs, two representative surface problems are demonstrated, namely, isolated-aperture surface analysis and surface-wave mode characterization. For the isolated-aperture surface, a characterization procedure is derived based on GBCs and Babinet’s principle, and the accuracy is validated through comparison with full-wave simulations. For surface wave analysis, a characterization procedure is also developed from GBCs, and the feasibility is verified by numerical examples as well. Full article
(This article belongs to the Special Issue State-of-the-Art Frequency Selective Surfaces (FSSs))
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12 pages, 5371 KiB  
Article
A 60-GHz Ultra-Thin and Flexible Metasurface for Frequency-Selective Wireless Applications
by Syeda Fizzah Jilani, Oluyemi P. Falade, Tom Wildsmith, Paul Reip and Akram Alomainy
Appl. Sci. 2019, 9(5), 945; https://doi.org/10.3390/app9050945 - 6 Mar 2019
Cited by 15 | Viewed by 4729
Abstract
This paper demonstrates a design, fabrication and performance evaluation of a frequency selective 60-GHz flexible metasurface in order to facilitate an unobstructed, secure, and low-loss high-frequency signal propagation. The high-attenuation 60 GHz millimeter-wave (MMW) band is selected for the design of a broadband [...] Read more.
This paper demonstrates a design, fabrication and performance evaluation of a frequency selective 60-GHz flexible metasurface in order to facilitate an unobstructed, secure, and low-loss high-frequency signal propagation. The high-attenuation 60 GHz millimeter-wave (MMW) band is selected for the design of a broadband metasurface. The symmetric metasurface unit-cell structure comprises of an assembly of a circular metallic ring embedded with a square-shaped ring. The screen printing process is deployed to perform fabrication of the metasurface on flexible films by means of highly-conductive nanoparticle copper pastes. Electromagnetic (EM) characteristics of the proposed structure are examined by using the quasi-optic bench testing facility in order to validate its potential contribution in the high data-rate communication links. The proposed ultra-thin and flexible metasurface can be integrated on walls and windows as wallpaper to enhance the wireless signal propagation in highly-dense indoor scenarios. Full article
(This article belongs to the Special Issue State-of-the-Art Frequency Selective Surfaces (FSSs))
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Review

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14 pages, 430 KiB  
Review
A Metasurfaces Review: Definitions and Applications
by Syed S. Bukhari, J (Yiannis) Vardaxoglou and William Whittow
Appl. Sci. 2019, 9(13), 2727; https://doi.org/10.3390/app9132727 - 5 Jul 2019
Cited by 195 | Viewed by 15241
Abstract
This paper is a critical review of metasurfaces, which are planar metamaterials. Metamaterials offer bespoke electromagnetic applications and novel properties which are not found in naturally occurring materials. However, owing to their 3D-nature and resonant characteristics, they suffer from manufacturing complexity, losses and [...] Read more.
This paper is a critical review of metasurfaces, which are planar metamaterials. Metamaterials offer bespoke electromagnetic applications and novel properties which are not found in naturally occurring materials. However, owing to their 3D-nature and resonant characteristics, they suffer from manufacturing complexity, losses and are highly dispersive. The 2-dimensional nature of metasurfaces allows ease of fabrication and integration into devices. The phase discontinuity across the metasurface offers anomalous refraction, thereby conserving the good metamaterial properties while still offering the low-loss characteristics. The paper discusses salient features and applications of metasurfaces; wavefront shaping; phase jumps; non-linear metasurfaces; and their use as frequency selective surfaces (FSS). Full article
(This article belongs to the Special Issue State-of-the-Art Frequency Selective Surfaces (FSSs))
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