Magnetic field sensor including carrier excluding for reducing an instrinsic contribution to carrier concentration in the active region
US6809514B2 · kind B2 · utility
5Cited by
10References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2002 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Oct 29, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1186
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides a Hall effect magnetic field sensor (10, 50) including carrier excluding or extracting means (36, 66) for reducing an intrinsic contribution to carrier concentration in the active region (14e, 53c) to provide for the sensor to be operative in an extrinsic saturated regime. This provides an advantage that magnetic field measurement sensitivity of the sensor (10, 50) can be made substantially insensitive to sensor temperature thereby improving measurement accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.