Magnetic sensing having hall plate routing to reduce inductive coupling
US12140646B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2023 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | Jun 11, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/0082
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus for canceling inductive coupling in a magnetic field sensing device having one or more Hall elements. A device can include a Hall element having a first pair of first and second voltage sensing terminals at diametrically opposed locations on the Hall element, and a second pair of third and fourth voltage sensing terminals diametrically opposed locations on the Hall element. A first mirror conductive path extends around a perimeter of the Hall element in a first direction a second mirror conductive path extends around the perimeter of the Hall element in a second direction so that the first and second mirror conductive paths are on opposite sides of the Hall element and are equal and opposite to cancel inductive coupling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.