Optimization of autonomous magnetic field sensor consisting of giant magnetoimpedance sensor and surface acoustic wave transducer

Bodong Li, Ahmed Mohamed Aly Morsy, Jürgen Kosel

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

This paper presents a novel autonomous thin film magnetic field sensor consisting of a tri-layer giant magnetoimpedance sensor and a surface acoustic wave transponder. Double and single electrode interdigital transducer (IDT) designs are employed and compared. The integrated sensor is fabricated using standard microfabrication technology. The results show the double electrode IDT has an advantage in terms of the sensitivity. In order to optimize the matching component, a simulation based on P-matrix is carried out. A maximum change of 2.4 dB of the reflection amplitude and a sensitivity of 0.34 dB/Oe are obtained experimentally. © 2012 IEEE.
Original languageEnglish (US)
Pages (from-to)4324-4327
Number of pages4
JournalIEEE Transactions on Magnetics
Volume48
Issue number11
DOIs
StatePublished - Nov 2012

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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