Dr Amjad Iqbal amjad.iqbal@durham.ac.uk
Academic Visitor
Biotelemetry and Wireless Powering of Biomedical Implants Using a Rectifier Integrated Self-Diplexing Implantable Antenna
Iqbal, Amjad; Al-Hasan, Muath; Ben Mabrouk, Ismail; Basir, Abdul; Nedil, Mourad; Yoo, Hyoungsuk
Authors
Muath Al-Hasan
Dr Ismail Ben Mabrouk ismail.benmabrouk@durham.ac.uk
Assistant Professor
Abdul Basir
Mourad Nedil
Hyoungsuk Yoo
Abstract
This article proposes an efficient and complete wireless power transfer (WPT) system (WPTS) for multipurpose biomedical implants. The WPTS is composed of a self-diplexing implantable antenna, efficient rectifier, and WPT transmitter (WPT Tx). The proposed system is capable of simultaneously transmitting recorded data and recharging the batteries of the devices (so as to elongate the implant life). The WPT Tx occupies dimensions of 50×50×1.6 mm 3 and is optimized to effectively transfer power at 1470 MHz to a 55-mm deep implantable device. An efficient and compact ( 3.4×6.7 mm 2 ) rectifier is used at 1470 MHz to convert the harvested RF power into a useful direct current (dc) power. The proposed rectifier circuit exhibits a high conversion efficiency of 50% even at an input power of −14 dBm and maximum efficiency of 76.1% at 2 dBm. The proposed self-diplexing implantable antenna occupies small dimensions (9.4 mm 3 ) and operates at 915 and 1470 MHz by exciting ports 1 and 2, respectively. The biotelemetry operation is performed using a 915 MHz band (port 1), and the rectifier circuit is connected to port 2 (1470 MHz) to perform wireless powering. The simulated results are validated by examining the individual elements (WPT Tx, rectifier, and self-diplexing antenna) and overall WPTS in a saline solution and minced pork. The results prove that the proposed scheme is suitable for biotelemetry and wireless powering of biomedical implants.
Citation
Iqbal, A., Al-Hasan, M., Ben Mabrouk, I., Basir, A., Nedil, M., & Yoo, H. (2021). Biotelemetry and Wireless Powering of Biomedical Implants Using a Rectifier Integrated Self-Diplexing Implantable Antenna. IEEE Transactions on Microwave Theory and Techniques, 69(7), 3438-3451. https://doi.org/10.1109/tmtt.2021.3065560
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 5, 2021 |
Online Publication Date | Mar 24, 2021 |
Publication Date | 2021-07 |
Deposit Date | Oct 7, 2021 |
Publicly Available Date | Oct 7, 2021 |
Journal | IEEE Transactions on Microwave Theory and Techniques |
Print ISSN | 0018-9480 |
Electronic ISSN | 1557-9670 |
Publisher | Institute of Electrical and Electronics Engineers |
Peer Reviewed | Peer Reviewed |
Volume | 69 |
Issue | 7 |
Pages | 3438-3451 |
DOI | https://doi.org/10.1109/tmtt.2021.3065560 |
Public URL | https://durham-repository.worktribe.com/output/1231450 |
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© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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