Short-Range Communication for Small Biomedical Implants using Magnetoelectric Effect

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

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

4 Scopus citations

Abstract

This paper introduces a technique, called monotonic energy transmission (MET), for short-range wireless data transfer from small implantable devices with millimeter (mm) scale dimensions to an external unit using the magnetoelectric (ME) effect. In the proposed technique, while low-frequency magnetic field is used to power an implant which integrates a small ME transducer, data is transferred by driving the ME transducer with an initiation and a suppression sinusoid, which are 180° apart in phase. Transmitting both sinusoids improves the data rate and minimizes the inter-symbol interference (ISI). This technique was combined with pulse position modulation (PPM) to further increase the data rate. This paper describes the theory behind the proposed technique and demonstrates its operation through measurements using a 6.56×2.63× 0.67 mm3 ME transducer fabricated with Metglas and PZT-5A as the magnetostrictive and piezoelectric layers, respectively. In measurements, 220 kbps data rate was achieved using a delay detection resolution of 1 ns with an ME transducer operating at 274 kHz.

Original languageEnglish (US)
Title of host publicationISCAS 2023 - 56th IEEE International Symposium on Circuits and Systems, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665451093
DOIs
StatePublished - 2023
Externally publishedYes
Event56th IEEE International Symposium on Circuits and Systems, ISCAS 2023 - Monterey, United States
Duration: May 21 2023May 25 2023

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
Volume2023-May
ISSN (Print)0271-4310

Conference

Conference56th IEEE International Symposium on Circuits and Systems, ISCAS 2023
Country/TerritoryUnited States
CityMonterey
Period5/21/235/25/23

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Keywords

  • Wireless data transfer
  • biomedical implant
  • magnetic field
  • magnetoelectric transducer

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