Magnetic field detection device and method of detecting magnetic field
US11169224B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2019 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Jan 20, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/124
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic field detection device includes a magnetic field detection element, a modulator, and a demodulator. The magnetic field detection element has a sensitivity axis in a first direction. The modulator is configured to apply, to the magnetic field detection element, a stress oscillating at a first frequency and including a component in a second direction, the second direction being orthogonal to the first direction. The demodulator is configured to demodulate an output signal having the first frequency and outputted from the magnetic field detection element, and detect, on a basis of an amplitude of the output signal, an intensity of a measurement magnetic field to be received by the magnetic field detection element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.