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Special Issue "UHF Wearable Antennas for RFID Applications"

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Physical Sensors".

Deadline for manuscript submissions: closed (31 October 2020) | Viewed by 7776

Special Issue Editor

Prof. Dr. Giovanni Andrea Casula
E-Mail Website
Guest Editor
Department of Electrical and Electronic Engineering, University of Cagliari, Piazza d’armi, 09123 Cagliari, Italy
Interests: low-cost RFID tag design in the UHF band; wearable antennas design and interaction with the human body; design of substrate integrated waveguides slot antennas in the UHF band; microwave antennas design using genetic programming, periodic structures design (EBG and AMC) through evolutionary programming; printed log-periodic dipole antennas design using innovative feeding techniques and inkjet printing; synthesis, analysis, and design of wire, patch and slot antennas
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Special Issue Information

Dear Colleagues,

Radio-frequency identification (RFID) technology has recently attracted significant interest in wearable applications, especially in the UHF frequency band, where devices operate in the far-field region, allowing long haul links. Several design challenges are associated with wearable RFID technologies, including operation frequencies, the influence of the surrounding biological tissues, antenna design and miniaturization, and conforming to international safety guidelines. Different fabrication methods are available for realizing flexible, conformal, and robust RFID device prototypes. The presence of the human body in close proximity to the RFID device is probably the most critical difficulty in terms of design, fabrication, and testing, which must be faced in order to allow appropriate developments in the field of health care and of body-area applications in general.

Authors are invited to submit articles reporting recent advances in wearable antennas for RFID applications in the UHF frequency band. The Special Issue is mainly focused on new design methodologies and simulation techniques to face the problems imposed by the human body proximity, which significantly modifies the performance of wearable antennas. The scope of this Special Issue will be the collection of new full research and/or review results, and highly rated manuscripts exploring the above topic.

Dr. Giovanni Andrea Casula
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. Sensors 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

  • UHF RFID applications 
  • RFID antennas 
  • Wearable antennas
  • Body–antenna coupling

Published Papers (2 papers)

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Research

Article
Fabrication, Measurement and Time Decay of the Electromagnetic Properties of Semi-Solid Water-Based Phantoms
Sensors 2019, 19(19), 4298; https://doi.org/10.3390/s19194298 - 04 Oct 2019
Cited by 4 | Viewed by 1583
Abstract
This paper presents a complete and detailed description of the fabrication and measurement of the electromagnetic properties of water-based semi-solid phantoms with emphasis on the analysis of the time evolution of the complex permittivity of several samples stored in different conditions. A known [...] Read more.
This paper presents a complete and detailed description of the fabrication and measurement of the electromagnetic properties of water-based semi-solid phantoms with emphasis on the analysis of the time evolution of the complex permittivity of several samples stored in different conditions. A known recipe for a 2/3 muscle equivalent phantom is used as test material, and the several phantom sample properties are measured with an in-house developed coaxial probe technique. It is shown that the storing condition is of paramount importance to extend the lifetime of a given phantom. This behavior stems from the way the storing condition affects the water evaporation rate of the sample. In particular, while an unprotected sample can preserve its electromagnetic properties only for a few days, a very well-sealed one can last at least up to a year. Full article
(This article belongs to the Special Issue UHF Wearable Antennas for RFID Applications)
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Article
A Printed Wearable Dual-Band Antenna for Wireless Power Transfer
Sensors 2019, 19(7), 1732; https://doi.org/10.3390/s19071732 - 11 Apr 2019
Cited by 26 | Viewed by 5601
Abstract
In this work, a dual-band printed planar antenna, operating at two ultra-high frequency bands (2.5 GHz/4.5 GHz), is proposed for wireless power transfer for wearable applications. The receiving antenna is printed on a Kapton polyimide-based flexible substrate, and the transmitting antenna is on [...] Read more.
In this work, a dual-band printed planar antenna, operating at two ultra-high frequency bands (2.5 GHz/4.5 GHz), is proposed for wireless power transfer for wearable applications. The receiving antenna is printed on a Kapton polyimide-based flexible substrate, and the transmitting antenna is on FR-4 substrate. The receiver antenna occupies 2.1 cm 2 area. Antennas were simulated using ANSYS HFSS software and the simulation results are compared with the measurement results. Full article
(This article belongs to the Special Issue UHF Wearable Antennas for RFID Applications)
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