Design considerations for ultrasonic power transmission to millimeter-sized implantable microelectronics devices

Miao Meng, Ahmed Ibrahim, Mehdi Kiani

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    7 Scopus citations

    Abstract

    This paper presents the design considerations to improve the power transfer efficiency (PTE) of ultrasonic power transmission links for wireless powering of millimeter (mm)-sized implantable microelectronic devices (IMDs). We have shown by the ultrasound theory that the diameter of the transmitter (Tx) and receiver (Rx) ultrasonic transducers, operation frequency, and powering distance have significant effect on the sound beam profile and, therefore, PTE of the link. The proposed design guideline, which has been verified by measurement results, suggests that the Rx diameter should be maximized to the extent that the application allows, and then the Tx diameter and operation frequency should be carefully chosen such that the IMD locates inside the focal zone of the Tx transducer for a given powering distance. The PTEs of ultrasonic and optimized inductive links with 2 mm Rx have also been compared that suggests the use of ultrasound when the powering distance is larger than 45 mm.

    Original languageEnglish (US)
    Title of host publicationIEEE Biomedical Circuits and Systems Conference
    Subtitle of host publicationEngineering for Healthy Minds and Able Bodies, BioCAS 2015 - Proceedings
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781479972333
    DOIs
    StatePublished - Dec 4 2015
    Event11th IEEE Biomedical Circuits and Systems Conference, BioCAS 2015 - Atlanta, United States
    Duration: Oct 22 2015Oct 24 2015

    Publication series

    NameIEEE Biomedical Circuits and Systems Conference: Engineering for Healthy Minds and Able Bodies, BioCAS 2015 - Proceedings

    Other

    Other11th IEEE Biomedical Circuits and Systems Conference, BioCAS 2015
    CountryUnited States
    CityAtlanta
    Period10/22/1510/24/15

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    All Science Journal Classification (ASJC) codes

    • Biotechnology
    • Instrumentation
    • Biomedical Engineering
    • Electrical and Electronic Engineering

    Cite this

    Meng, M., Ibrahim, A., & Kiani, M. (2015). Design considerations for ultrasonic power transmission to millimeter-sized implantable microelectronics devices. In IEEE Biomedical Circuits and Systems Conference: Engineering for Healthy Minds and Able Bodies, BioCAS 2015 - Proceedings [7348295] (IEEE Biomedical Circuits and Systems Conference: Engineering for Healthy Minds and Able Bodies, BioCAS 2015 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/BioCAS.2015.7348295