Magnetic field transducer

WO2026114799A1PCT designated stage Publication Date: 2026-06-04LEM INT SA
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Patent Information

Application Number
PCT/EP2025/083970
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-11-30
Filing Date
2025-11-24
Publication Date
2026-06-04

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  • Figure EP2025083970_04062026_PF_FP_ABST
    Figure EP2025083970_04062026_PF_FP_ABST
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Abstract

A magnetic field transducer (1) comprising a tunnel magnetoresistance (TMR) sensing arrangement (2) comprising a TMR Wheatstone bridge (6) and a power supply (4), configured to supply power to the TMR sensing arrangement (2), comprising a current source (5). The magnetic field transducer (1) further comprises a signal regulation circuit (3) comprising a bridge output control section (8) configured to measure an output of the TMR Wheatstone bridge (6) and to output a signal, based on the measured output of the TMR Wheatstone bridge (6), transmitted to the current source (5). The current source (5) is configured to set a predefined base current (Is) and a supplementary current (Isup) of the power supply (4) to adjust the supplied power to the TMR sensing arrangement (2) in response to the output of the TMR Wheatstone bridge (6) and to correct a non-linearity of the output of the TMR Wheatstone bridge in response to an applied magnetic field.
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Citation Information

Patent Citations

  • Magnetic field sensor with automatic sensitivity adjustment

    US20090212765A1

  • Circuits and methods for modulating current in circuits comprising sensing elements

    US20160313407A1

  • TMR Sensor with Magnetic Tunnel Junctions with Shape Anisotropy

    US20210055360A1

  • Self-calibrating magnetoresistance-based magnetic field sensors

    US20240230791A1