Magnetic sensor with an asymmetric Wheatstone bridge
US11525874B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 8, 2021 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | Jul 8, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/0023
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic sensor includes a sensor arrangement including a plurality of resistive elements electrically arranged in an asymmetrical bridge circuit, where the plurality of resistive elements include a plurality of magnetic field sensor elements and a plurality of non-magnetic sensitive resistive elements. Moreover, a first total resistance of a first pair of resistive elements is different from a second total resistance of a second pair of resistive elements. A first leg of the asymmetrical bridge circuit includes a first magnetic field sensor element and a first non-magnetic sensitive resistive element. A second leg of the asymmetrical bridge circuit includes a second magnetic field sensor element and a second non-magnetic sensitive resistive element. The asymmetrical bridge circuit is configured to generate a differential signal based on sensor signals generated by the plurality of magnetic field sensor elements in response to a magnetic field impinging thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.