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AMC-Based Low-Profile Dual-Band Slotted Patch Antenna for IoT Devices in the Healthcare System
An artificial magnetic conductor (AMC)-based patch antenna with a low profile is developed for wireless devices in IoT-based healthcare systems. The proposed antenna comprises two pairs of circular-shaped patches with circular-shaped slots and a dual-band 4 × 4 array of AMC reflectors with two zero-...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer International Publishing
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9794476/ http://dx.doi.org/10.1007/s40998-022-00581-7 |
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author | Rajavel, V. Ghoshal, Dibyendu |
author_facet | Rajavel, V. Ghoshal, Dibyendu |
author_sort | Rajavel, V. |
collection | PubMed |
description | An artificial magnetic conductor (AMC)-based patch antenna with a low profile is developed for wireless devices in IoT-based healthcare systems. The proposed antenna comprises two pairs of circular-shaped patches with circular-shaped slots and a dual-band 4 × 4 array of AMC reflectors with two zero-degree reflection responses to enhance the antenna's radiation performance. For the 2.45 GHz ISM and 5.4 GHz WLAN bands, the patch antenna has dimensions of 0.44λ(0) × 0.52λ(0) × 0.013λ(0), with partial ground structures to improve radiation characteristics. Following that, a unique dual-band symmetrical AMC unit cell with dimensions of 22 × 22 × 1.6 mm(3) is developed. There is a gap of 15 mm between the antenna and the AMC surface. The antenna is supported by a 4 × 4 AMC array that has a total dimension of 0.72λ(0) × 0.72λ(0) × 0.15λ(0). The reflection coefficient values of less than − 10 dB in the 1.7–2.5 and 5.1–5.6 GHz bands, with a bandwidth percentage of 38 and 9.3%, respectively. The antenna's gains were 7.2 and 4 dBi inside the bands. Furthermore, the Specific Absorption Rate (SAR) value did not match the WHO's safety and health guidelines. The issue was solved by including an AMC surface in the proposed antenna. At 2.45 and 5.4 GHz, SAR values of 0.58 and 1.04 W/Kg were measured. Vector network analyser and anechoic chamber were used to test the performance of antenna and AMC surface prototypes. There is a substantial agreement among measured and simulated parameters of an antenna. Consequently, the developed antenna combination with the AMC structure is suited for wireless devices in ISM and WLAN bands, often used in IoT-based healthcare systems. |
format | Online Article Text |
id | pubmed-9794476 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Springer International Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-97944762022-12-28 AMC-Based Low-Profile Dual-Band Slotted Patch Antenna for IoT Devices in the Healthcare System Rajavel, V. Ghoshal, Dibyendu Iran J Sci Technol Trans Electr Eng Research Paper An artificial magnetic conductor (AMC)-based patch antenna with a low profile is developed for wireless devices in IoT-based healthcare systems. The proposed antenna comprises two pairs of circular-shaped patches with circular-shaped slots and a dual-band 4 × 4 array of AMC reflectors with two zero-degree reflection responses to enhance the antenna's radiation performance. For the 2.45 GHz ISM and 5.4 GHz WLAN bands, the patch antenna has dimensions of 0.44λ(0) × 0.52λ(0) × 0.013λ(0), with partial ground structures to improve radiation characteristics. Following that, a unique dual-band symmetrical AMC unit cell with dimensions of 22 × 22 × 1.6 mm(3) is developed. There is a gap of 15 mm between the antenna and the AMC surface. The antenna is supported by a 4 × 4 AMC array that has a total dimension of 0.72λ(0) × 0.72λ(0) × 0.15λ(0). The reflection coefficient values of less than − 10 dB in the 1.7–2.5 and 5.1–5.6 GHz bands, with a bandwidth percentage of 38 and 9.3%, respectively. The antenna's gains were 7.2 and 4 dBi inside the bands. Furthermore, the Specific Absorption Rate (SAR) value did not match the WHO's safety and health guidelines. The issue was solved by including an AMC surface in the proposed antenna. At 2.45 and 5.4 GHz, SAR values of 0.58 and 1.04 W/Kg were measured. Vector network analyser and anechoic chamber were used to test the performance of antenna and AMC surface prototypes. There is a substantial agreement among measured and simulated parameters of an antenna. Consequently, the developed antenna combination with the AMC structure is suited for wireless devices in ISM and WLAN bands, often used in IoT-based healthcare systems. Springer International Publishing 2022-12-28 2023 /pmc/articles/PMC9794476/ http://dx.doi.org/10.1007/s40998-022-00581-7 Text en © The Author(s), under exclusive licence to Shiraz University 2022, Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic. |
spellingShingle | Research Paper Rajavel, V. Ghoshal, Dibyendu AMC-Based Low-Profile Dual-Band Slotted Patch Antenna for IoT Devices in the Healthcare System |
title | AMC-Based Low-Profile Dual-Band Slotted Patch Antenna for IoT Devices in the Healthcare System |
title_full | AMC-Based Low-Profile Dual-Band Slotted Patch Antenna for IoT Devices in the Healthcare System |
title_fullStr | AMC-Based Low-Profile Dual-Band Slotted Patch Antenna for IoT Devices in the Healthcare System |
title_full_unstemmed | AMC-Based Low-Profile Dual-Band Slotted Patch Antenna for IoT Devices in the Healthcare System |
title_short | AMC-Based Low-Profile Dual-Band Slotted Patch Antenna for IoT Devices in the Healthcare System |
title_sort | amc-based low-profile dual-band slotted patch antenna for iot devices in the healthcare system |
topic | Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9794476/ http://dx.doi.org/10.1007/s40998-022-00581-7 |
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