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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

Biotelemetry and Wireless Powering of Biomedical Implants Using a Rectifier Integrated Self-Diplexing Implantable Antenna Thumbnail


Authors

Muath Al-Hasan

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

Files

Accepted Journal Article (4.7 Mb)
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Copyright Statement
© 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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