A novel bar-shaped magnetic shielding for magnetoresistive sensors in current measurement on printed circuit boards

X. Sun, P. T. Lai, P. W.T. Pong

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

This paper presents the study of a novel bar-shaped magnetic shielding for magnetoresistive (MR) sensors in current measurement on printed circuit boards (PCB). The main physical principles of the shielding effect were studied by using the analytical model of magnetic flux concentration. Finite element analysis (FEA) simulations were used to simulate the shielding effects with changing geometrical parameters of the bar-shaped magnetic shielding. The dependences of the shielding effect on the parameters of length, width and thickness were analyzed. It shows that these parameters are critical for designing magnetic shielding. This new concept of magnetic shielding for MR sensors in current measurement on PCB was experimentally tested and verified in a laboratory setup. The experimental results verify the feasibility and effect of this novel magnetic shielding for MR sensors.

Original languageEnglish (US)
Article number2274727
JournalIEEE Transactions on Magnetics
Volume50
Issue number1
DOIs
StatePublished - Jan 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

Keywords

  • Finite element analysis (FEA)
  • Magnetic flux concentration
  • Magnetic shielding
  • Magnetoresistive (MR) sensors

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