Sensor component and sensor device for magnetic field measurement

The sensor component and device address sensitivity and noise challenges in magnetic sensors by series-connecting layer bodies with independent power supplies and optimized axes, enhancing sensitivity and noise reduction for precise magnetic field measurements.

DE102025120746B3Undetermined Publication Date: 2026-07-09HELMHOLTZ ZENTRUM DRESDEN ROSSENDORF
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
HELMHOLTZ ZENTRUM DRESDEN ROSSENDORF
Filing Date
2025-05-27
Publication Date
2026-07-09

AI Technical Summary

Technical Problem

Existing magnetic sensors face challenges in achieving high sensitivity and signal-to-noise ratio while maintaining compact size and efficiency, particularly in planar Hall effect sensors and Hall probes, due to correlated noise and hysteresis issues.

Method used

A sensor component and device design featuring series-connected layer bodies with independent excitation and measuring electrodes, separated power supply circuits, and optimized angular alignment of axes to enhance sensitivity and reduce noise, utilizing ferromagnetic and semiconductor materials for charge carrier deflection.

Benefits of technology

The design achieves improved signal-to-noise ratio and sensitivity by correlating noise reduction and maintaining dynamic range, enabling precise magnetic field measurements and applications such as small particle position determination and current density distribution reconstruction.

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Abstract

A sensor component (510) comprises electrically conductive layer bodies (100), each with a horizontal first axis (101) and a horizontal second axis (102) inclined to the first axis. Two excitation electrodes (211, 212) are arranged on opposite first sides of one of the layer bodies (100) along the first axis (101) and make electrical contact with the layer body (100). Two measuring electrodes (311, 312) are arranged on opposite measuring sides of one of the layer bodies (100) along the second axis (102) and define a measuring section (301) between them. The measuring sections (301) of the layer bodies (100) are electrically connected in series.
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