Omnidirectional Wireless Power Transfer for Millimetric Magnetoelectric Biomedical Implants
Abstract
Miniature bioelectronic implants promise revolutionary therapies for cardiovascular and neurological disorders. Wireless power transfer (WPT) is a significant method for miniaturization, eliminating the need for bulky batteries in today’s devices. Despite successful demonstrations of millimetric battery-free implants in animal models, the robustness and efficiency of WPT are known to degrade significantly under misalignment incurred by body movements, respiration, heart beating, and limited control of implant orientation during surgery. This article presents an omnidirectional WPT platform for millimetric bioelectronic implants, employing the emerging magnetoelectric (ME) WPT modality, and “magnetic field steering” technique based on multiple transmitter (TX) coils. To accurately sense the weak coupling in a miniature implant and adaptively control the multicoil TX array in a closed loop, we develop an active echo (AE) scheme …
Wei Wang
Ph.D. Student (started in 2021)
Zhanghao Yu
PhD 2023, now at Intel
Yiwei Zou
Ph.D. Student (started in 2022)
Prahalad Chari
Class of 2025
Yumin Su
Ph.D. Student (started in 2023)
