A Comparative Study on Wireless Power Transfer to Millimeter-Scale Biomedical Implants with Ultrasound and Magnetoelectric Technologies

Sujay Hosur; Sumanta Kumar Karan; Shashank Priya; Mehdi Kiani

doi:10.1109/BioCAS58349.2023.10388751

A Comparative Study on Wireless Power Transfer to Millimeter-Scale Biomedical Implants with Ultrasound and Magnetoelectric Technologies

Sujay Hosur, Sumanta Kumar Karan, Shashank Priya, Mehdi Kiani

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

Wireless power transfer (WPT) to biomedical implants enables their miniaturization to millimeter (mm) scales by removing their battery, which is critical for chronic operation. Ultrasound (US) and magnetoelectric (ME) modalities are both emerging technologies for WPT to mm-sized implants at deep sites (several centimeters) as they enjoy higher regulatory safety limits. In US WPT, the piezoelectric transducer in the implant generates an electric voltage when actuated by US pressure. In ME WPT, the ME transducer composed of a layered magnetostrictive and piezoelectric structure is exposed to low-frequency magnetic field to generate an electric voltage. Since both US and ME transducers operate at acoustic wave resonance, high-performance mm-sized transducers operating at MHz and sub-MHz frequencies are viable. Although US and ME WPT modalities have been studied individually in the literature, there is no comparative study of them for similar conditions. This paper compares the power delivery capabilities of these two modalities using comparable mm-sized receiver transducers of 6.4×2.3×1 mm3. In measurements at 30 mm depth, considering the safety limits, the ME and US WPT links could deliver 4.4 mW and 6.25 mW of power in a tissue and water medium, respectively.

Original language	English (US)
Title of host publication	BioCAS 2023 - 2023 IEEE Biomedical Circuits and Systems Conference, Conference Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798350300260
DOIs	https://doi.org/10.1109/BioCAS58349.2023.10388751
State	Published - 2023
Externally published	Yes
Event	2023 IEEE Biomedical Circuits and Systems Conference, BioCAS 2023 - Toronto, Canada Duration: Oct 19 2023 → Oct 21 2023

Publication series

Name	BioCAS 2023 - 2023 IEEE Biomedical Circuits and Systems Conference, Conference Proceedings

Conference

Conference	2023 IEEE Biomedical Circuits and Systems Conference, BioCAS 2023
Country/Territory	Canada
City	Toronto
Period	10/19/23 → 10/21/23

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Keywords

Wireless power transfer
biomedical implants
magnetoelectric transducers
ultrasound transducers

Publisher link

10.1109/BioCAS58349.2023.10388751

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Cite this

Hosur, S., Karan, S. K., Priya, S., & Kiani, M. (2023). A Comparative Study on Wireless Power Transfer to Millimeter-Scale Biomedical Implants with Ultrasound and Magnetoelectric Technologies. In BioCAS 2023 - 2023 IEEE Biomedical Circuits and Systems Conference, Conference Proceedings (BioCAS 2023 - 2023 IEEE Biomedical Circuits and Systems Conference, Conference Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/BioCAS58349.2023.10388751

A Comparative Study on Wireless Power Transfer to Millimeter-Scale Biomedical Implants with Ultrasound and Magnetoelectric Technologies. / Hosur, Sujay; Karan, Sumanta Kumar; Priya, Shashank et al.
BioCAS 2023 - 2023 IEEE Biomedical Circuits and Systems Conference, Conference Proceedings. Institute of Electrical and Electronics Engineers Inc., 2023. (BioCAS 2023 - 2023 IEEE Biomedical Circuits and Systems Conference, Conference Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Hosur, S, Karan, SK, Priya, S & Kiani, M 2023, A Comparative Study on Wireless Power Transfer to Millimeter-Scale Biomedical Implants with Ultrasound and Magnetoelectric Technologies. in BioCAS 2023 - 2023 IEEE Biomedical Circuits and Systems Conference, Conference Proceedings. BioCAS 2023 - 2023 IEEE Biomedical Circuits and Systems Conference, Conference Proceedings, Institute of Electrical and Electronics Engineers Inc., 2023 IEEE Biomedical Circuits and Systems Conference, BioCAS 2023, Toronto, Canada, 10/19/23. https://doi.org/10.1109/BioCAS58349.2023.10388751

Hosur S, Karan SK, Priya S, Kiani M. A Comparative Study on Wireless Power Transfer to Millimeter-Scale Biomedical Implants with Ultrasound and Magnetoelectric Technologies. In BioCAS 2023 - 2023 IEEE Biomedical Circuits and Systems Conference, Conference Proceedings. Institute of Electrical and Electronics Engineers Inc. 2023. (BioCAS 2023 - 2023 IEEE Biomedical Circuits and Systems Conference, Conference Proceedings). doi: 10.1109/BioCAS58349.2023.10388751

Hosur, Sujay ; Karan, Sumanta Kumar ; Priya, Shashank et al. / A Comparative Study on Wireless Power Transfer to Millimeter-Scale Biomedical Implants with Ultrasound and Magnetoelectric Technologies. BioCAS 2023 - 2023 IEEE Biomedical Circuits and Systems Conference, Conference Proceedings. Institute of Electrical and Electronics Engineers Inc., 2023. (BioCAS 2023 - 2023 IEEE Biomedical Circuits and Systems Conference, Conference Proceedings).

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A Comparative Study on Wireless Power Transfer to Millimeter-Scale Biomedical Implants with Ultrasound and Magnetoelectric Technologies

Abstract

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