Staff View: Flexible Meta-Patch Rectenna Array for Energizing Low-Power Wearable Medical Sensors

Flexible Meta-Patch Rectenna Array for Energizing Low-Power Wearable Medical Sensors

This article presents a low-cost 2x2 metasurface-based rectenna array operating at the 2.45 GHz industrial, scientific, and medical (ISM) band, designed to power low-power wearable medical sensors (WMS). The proposed antenna is a novel textile-based metasurface interlayer patch (meta-patch) antenna...

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Main Authors:	Alkhalaf, Hussein Yahya, Ahmad, Mohd Yazed, Ramiah, Harikrishnan, Hossain, A. K. M. Zakir, Azam, S. M. Kayser, Thiha, Aung
Format:	Article
Published:	Institute of Electrical and Electronics Engineers 2024
Subjects:	QA75 Electronic computers. Computer science TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://eprints.um.edu.my/47070/ https://doi.org/10.1109/ACCESS.2024.3452316
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spelling	my.um.eprints.470702025-01-03T08:50:17Z http://eprints.um.edu.my/47070/ Flexible Meta-Patch Rectenna Array for Energizing Low-Power Wearable Medical Sensors Alkhalaf, Hussein Yahya Ahmad, Mohd Yazed Ramiah, Harikrishnan Hossain, A. K. M. Zakir Azam, S. M. Kayser Thiha, Aung QA75 Electronic computers. Computer science TK Electrical engineering. Electronics Nuclear engineering This article presents a low-cost 2x2 metasurface-based rectenna array operating at the 2.45 GHz industrial, scientific, and medical (ISM) band, designed to power low-power wearable medical sensors (WMS). The proposed antenna is a novel textile-based metasurface interlayer patch (meta-patch) antenna fabricated on a felt fabric substrate, which replaces the conventional ground plane with a grounded metasurface consisting of a 3x3 unit cell array. A single excitation port is used for both the patch antenna and the metasurface to improve gain, efficiency, and bandwidth. The meta-patch antenna achieved a high gain of 7 dB, an efficiency of 77%, and an enhanced bandwidth of 120 MHz. The rectifier employs a seven-stage Cockcroft-Walton Voltage Multiplier (CWVM) topology, fabricated on a rigid substrate. To evaluate the performance of the meta-patch rectenna array and the effect of adding more elements, the proposed meta-patch rectenna was tested in single-element, 2x1 array, and 2x2 array configurations under continuous RF power. The single-element, 2x1 rectenna array, and 2x2 rectenna array achieved power conversion efficiencies (PCE) of 52%, 53%, and 56%, with DC output powers of 414 mu W, 429 mu W, and 450 mu W, respectively, at an input power of -1 dBm. The results demonstrate the potential of the proposed rectenna arrays for efficiently energizing low-power WMS. Institute of Electrical and Electronics Engineers 2024 Article PeerReviewed Alkhalaf, Hussein Yahya and Ahmad, Mohd Yazed and Ramiah, Harikrishnan and Hossain, A. K. M. Zakir and Azam, S. M. Kayser and Thiha, Aung (2024) Flexible Meta-Patch Rectenna Array for Energizing Low-Power Wearable Medical Sensors. IEEE Access, 12. pp. 121570-121585. ISSN 2169-3536, DOI https://doi.org/10.1109/ACCESS.2024.3452316 <https://doi.org/10.1109/ACCESS.2024.3452316>. https://doi.org/10.1109/ACCESS.2024.3452316 10.1109/ACCESS.2024.3452316
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	QA75 Electronic computers. Computer science TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	QA75 Electronic computers. Computer science TK Electrical engineering. Electronics Nuclear engineering Alkhalaf, Hussein Yahya Ahmad, Mohd Yazed Ramiah, Harikrishnan Hossain, A. K. M. Zakir Azam, S. M. Kayser Thiha, Aung Flexible Meta-Patch Rectenna Array for Energizing Low-Power Wearable Medical Sensors
description	This article presents a low-cost 2x2 metasurface-based rectenna array operating at the 2.45 GHz industrial, scientific, and medical (ISM) band, designed to power low-power wearable medical sensors (WMS). The proposed antenna is a novel textile-based metasurface interlayer patch (meta-patch) antenna fabricated on a felt fabric substrate, which replaces the conventional ground plane with a grounded metasurface consisting of a 3x3 unit cell array. A single excitation port is used for both the patch antenna and the metasurface to improve gain, efficiency, and bandwidth. The meta-patch antenna achieved a high gain of 7 dB, an efficiency of 77%, and an enhanced bandwidth of 120 MHz. The rectifier employs a seven-stage Cockcroft-Walton Voltage Multiplier (CWVM) topology, fabricated on a rigid substrate. To evaluate the performance of the meta-patch rectenna array and the effect of adding more elements, the proposed meta-patch rectenna was tested in single-element, 2x1 array, and 2x2 array configurations under continuous RF power. The single-element, 2x1 rectenna array, and 2x2 rectenna array achieved power conversion efficiencies (PCE) of 52%, 53%, and 56%, with DC output powers of 414 mu W, 429 mu W, and 450 mu W, respectively, at an input power of -1 dBm. The results demonstrate the potential of the proposed rectenna arrays for efficiently energizing low-power WMS.
format	Article
author	Alkhalaf, Hussein Yahya Ahmad, Mohd Yazed Ramiah, Harikrishnan Hossain, A. K. M. Zakir Azam, S. M. Kayser Thiha, Aung
author_facet	Alkhalaf, Hussein Yahya Ahmad, Mohd Yazed Ramiah, Harikrishnan Hossain, A. K. M. Zakir Azam, S. M. Kayser Thiha, Aung
author_sort	Alkhalaf, Hussein Yahya
title	Flexible Meta-Patch Rectenna Array for Energizing Low-Power Wearable Medical Sensors
title_short	Flexible Meta-Patch Rectenna Array for Energizing Low-Power Wearable Medical Sensors
title_full	Flexible Meta-Patch Rectenna Array for Energizing Low-Power Wearable Medical Sensors
title_fullStr	Flexible Meta-Patch Rectenna Array for Energizing Low-Power Wearable Medical Sensors
title_full_unstemmed	Flexible Meta-Patch Rectenna Array for Energizing Low-Power Wearable Medical Sensors
title_sort	flexible meta-patch rectenna array for energizing low-power wearable medical sensors
publisher	Institute of Electrical and Electronics Engineers
publishDate	2024
url	http://eprints.um.edu.my/47070/ https://doi.org/10.1109/ACCESS.2024.3452316
_version_	1821001884207415296
score	13.239859

Flexible Meta-Patch Rectenna Array for Energizing Low-Power Wearable Medical Sensors

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