An Approach to Improve the Misalignment and Wireless Power Transfer into Biomedical Implants Using Meandered Wearable Loop Antenna

Kod, Muayad, Zhou, Jiafeng ORCID: 0000-0001-5829-3932, Huang, Yi ORCID: 0000-0001-7774-1024, Hussein, Muaad, Sohrab, Abed P and Song, Chaoyun (2021) An Approach to Improve the Misalignment and Wireless Power Transfer into Biomedical Implants Using Meandered Wearable Loop Antenna. Wireless Power Transfer, 2021. pp. 1-12.

Text
revised Meandered loop antenna_beta.pdf - Author Accepted Manuscript
Download (1MB) | Preview

Official URL: http://dx.doi.org/10.1155/2021/6621899

Abstract

<jats:p>An approach to improve wireless power transfer (WPT) to implantable medical devices using loop antennas is presented. The antenna exhibits strong magnetic field and dense flux line distribution along two orthogonal axes by insetting the port inside the antenna area. This design shows excellent performance against misalignment in the y-direction and higher WPT as compared with a traditional square loop antenna. Two antennas were optimized based on this approach, one wearable and the other implantable. Both antennas work at both the ISM (Industrial, Scientific, and Medical) band of 433 MHz for WPT and the MedRadio (Medical Device Radiocommunications Service) band of 401–406 MHz for communications. To test the WPT for implantable medical devices, a miniaturized rectifier with a size of 10 mm × 5 mm was designed to integrate with the antenna to form an implantable rectenna. The power delivered to a load of 4.7 kΩ can be up to 1150 μW when 230 mW power is transmitted which is still under the safety limit. This design can be used to directly power a pacemaker, a nerve stimulation device, or a glucose measurement system which requires 70 μW, 100 μW, and 48 μW DC power, respectively.</jats:p>

Item Type:	Article
Uncontrolled Keywords:	Assistive Technology, Bioengineering, 7 Affordable and Clean Energy
Divisions:	Faculty of Science and Engineering > School of Electrical Engineering, Electronics and Computer Science
Depositing User:	Symplectic Admin
Date Deposited:	15 Mar 2021 08:23
Last Modified:	15 Mar 2024 10:32
DOI:	10.1155/2021/6621899
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3117289