Rotation angle sensor capable of accurately detecting rotation angle
US6640652B2 · kind B2 · utility
19Cited by
9References
4Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 2, 2002 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Oct 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/145
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
When shape anisotropy energy (H) of giant magnetoresistive elements (GMR elements) is expressed by H=A*Js*(Br/&pgr;) using saturation magnetization Js of a free magnetic layer and remanent magnetic flux density Br, A is set within a range of −350<A<0, and pairs of the GMR elements having opposite directions of fixed magnetization are electrically connected so that a differential of electric resistance values between electrode layers is outputted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.