JOURNAL ARTICLE

A self-biased, low-frequency, miniaturized magnetoelectric antenna for implantable medical device applications.

  • Published In: Applied Physics Letters, 2023, v. 122, n. 1. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Mukherjee, Dibyajyoti; Mallick, Dhiman 3 of 3

Abstract

This article focuses on the development and characterization of a self-biased, miniaturized low-frequency (LF) magnetoelectric (ME) antenna designed for implantable medical device (IMD) applications. Operating at an electromechanical resonant frequency of 49.9 kHz and sized at 1.75 mm³, the antenna uses a piezoelectric layer (PVDF) sandwiched between two magnetostrictive (Metglas) layers, enabling significant size reduction and lower path loss (0.57 dB/m) compared to conventional electromagnetic antennas. Experimental evaluations in air and a three-layered human tissue-mimicking phantom demonstrate the antenna’s capability for deep-body communication, with received powers of 20 nW and 8 nW at 1.2 m distance, respectively, alongside low specific absorption rate (SAR) values (~12 μW/kg). These features suggest the antenna’s suitability for next-generation miniaturized IMDs requiring efficient wireless communication with minimal tissue absorption.

Additional Information

  • Source:Applied Physics Letters. 2023/01, Vol. 122, Issue 1, p1
  • Document Type:Article
  • Subject Area:History
  • Publication Date:2023
  • ISSN:0003-6951
  • DOI:10.1063/5.0122736
  • Accession Number:161194010
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