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Industrial, Scientific and Medical (ISM) Sensors and Antennas in the Microwave Range

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

Deadline for manuscript submissions: 31 October 2024 | Viewed by 4209

Special Issue Editors

Prof. Dr. Daniel Segovia Vargas

E-Mail Website
Guest Editor
Signal Theory and Communication Department, University Carlos III of Madrid, 28029 Madrid, Spain
Interests: communications; RF; signal and data processing and multimedia processing
Prof. Dr. Alejandro García Lampérez

E-Mail Website
Guest Editor
Signal Theory and Communication Department, University Carlos III of Madrid, Madrid, Spain
Interests: microwave filters; millimeter waves; antennas

Special Issue Information

Dear Colleagues,

The use of wireless miniaturized and/or implantable devices has experienced a significant increase in industrial, health and scientific monitoring. (ISM applications). The use of the microwave or millimeter band for these applications has experienced an extraordinary advance in the last years. The need of either multiband or broadband devices, miniaturized and with the best performance in terms of gain and bandwidith has experienced a great advance. This issue is intended to present the last advances of miniaturized and implantable devices in ISM applications.

Prof. Dr. Daniel Segovia Vargas
Prof. Dr. Alejandro García Lampérez
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. 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 2600 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

  • multi-band
  • frequency-independent antenna
  • implantable antenna
  • industrial, scientific, and medical (ISM) bands
  • miniaturization
  • harvesting and wireless power transfer

Published Papers (2 papers)

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Research

18 pages, 3620 KiB  
Article
A Compact Modified Two-Arm Rectangular Spiral Implantable Antenna Design for ISM Band Biosensing Applications
by Mustafa Hikmet Bilgehan Ucar and Erdem Uras
Sensors 2023, 23(10), 4883; https://doi.org/10.3390/s23104883 - 18 May 2023
Cited by 6 | Viewed by 1622
Abstract
This paper presents a new microstrip implantable antenna (MIA) design based on the two-arm rectangular spiral (TARS) element for ISM band (Industrial, Scientific, and Medical 2.4–2.48 GHz) biotelemetric sensing applications. In the antenna design, the radiating element consists of a two-arm rectangular spiral [...] Read more.
This paper presents a new microstrip implantable antenna (MIA) design based on the two-arm rectangular spiral (TARS) element for ISM band (Industrial, Scientific, and Medical 2.4–2.48 GHz) biotelemetric sensing applications. In the antenna design, the radiating element consists of a two-arm rectangular spiral placed on a ground-supported dielectric layer with a permittivity of ϵr = 10.2 and a metallic line surrounding this spiral. Considering the practical implementation, in the proposed TARS-MIA, a superstrate of the same material is used to prevent contact between the tissue and the metallic radiator element. The TARS-MIA has a compact size of 10 × 10 × 2.56 mm3 and is excited by a 50 Ω coaxial feed line. The impedance bandwidth of the TARS-MIA is from 2.39 to 2.51 GHz considering a 50 Ω system, and has a directional radiation pattern with directivity of 3.18 dBi. Numerical analysis of the proposed microstrip antenna design is carried out in an environment with dielectric properties of rat skin (Cole–Cole model ϵf (ω), ρ = 1050 kg/m3) via CST Microwave Studio. The proposed TARS-MIA is fabricated using Rogers 3210 laminate with dielectric permittivity of ϵr = 10.2. The in vitro input reflection coefficient measurements are realized in a rat skin-mimicking liquid reported in the literature. It is observed that the in vitro measurement and simulation results are compatible, except for some inconsistencies due to manufacturing and material tolerances. The novelty of this paper is that the proposed antenna has a unique two-armed square spiral geometry along with a compact size. Moreover, an important contribution of the paper is the consideration of the radiation performance of the proposed antenna design in a realistic homogeneous 3D rat model. Ultimately, the proposed TARS-MIA may be a good alternative for ISM-band biosensing operations with its miniature size and acceptable radiation performance compared to its counterparts. Full article
(This article belongs to the Special Issue Industrial, Scientific and Medical (ISM) Sensors and Antennas in the Microwave Range)
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15 pages, 5668 KiB  
Article
UWB Circular Fractal Antenna with High Gain for Telecommunication Applications
by Ibrahime Hassan Nejdi, Seddik Bri, Mohamed Marzouk, Sarosh Ahmad, Youssef Rhazi, Mustapha Ait Lafkih, Yawar Ali Sheikh, Adnan Ghaffar and Mousa Hussein
Sensors 2023, 23(8), 4172; https://doi.org/10.3390/s23084172 - 21 Apr 2023
Cited by 8 | Viewed by 1985
Abstract
The present study proposes a new, highly efficient fractal antenna with ultra-wideband (UWB) characteristics. The proposed patch offers a wide simulated operating band that reaches 8.3 GHz, a simulated gain that varies between 2.47 and 7.73 dB throughout the operating range, and a [...] Read more.
The present study proposes a new, highly efficient fractal antenna with ultra-wideband (UWB) characteristics. The proposed patch offers a wide simulated operating band that reaches 8.3 GHz, a simulated gain that varies between 2.47 and 7.73 dB throughout the operating range, and a high simulated efficiency that comes to 98% due to the modifications made to the antenna geometry. The modifications carried out on the antenna are composed of several stages, a circular ring extracted from a circular antenna in which four rings are integrated and, in each ring, four other rings are integrated with a reduction factor of 3/8. To further improve the adaptation of the antenna, a modification of the shape of the ground plane is carried out. In order to test the simulation results, the prototype of the suggested patch was built and tested. The measurement results validate the suggested dual ultra-wideband antenna design approach, which demonstrates good compliance with the simulation. From the measured results, the suggested antenna with a compact volume of 40 × 24.5 × 1.6 mm3 asserts ultra-wideband operation with a measured impedance bandwidth of 7.33 GHz. A high measured efficiency of 92% and a measured gain of 6.52 dB is also achieved. The suggested UWB can effectively cover several wireless applications such as WLAN, WiMAX, and C and X bands. Full article
(This article belongs to the Special Issue Industrial, Scientific and Medical (ISM) Sensors and Antennas in the Microwave Range)
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