Low noise graphene hall sensors, systems and methods of making and using same
US10069065B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2015 |
| Grant date | Sep 4, 2018 |
| Priority date | — |
| Expiry date | Oct 24, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N52/101
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Graphene Hall sensors, magnetic sensor systems and methods for sensing a magnetic field using an adjustable gate voltage to adapt the Hall sensor magnetic field sensitivity according to a control input for environmental or process compensation and/or real-time adaptation for balancing power consumption and minimum detectable field performance. The graphene Hall sensor gate voltage can be modulated and the sensor output signal can be demodulated to combat flicker or other low frequency noise. Also, graphene Hall sensors can be provided with capacitive coupled contacts for reliable low impedance AC coupling to instrumentation amplifiers or other circuits using integral capacitance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.