Patent · US Active

Sensing a field with a sensor that includes bias resetting of an active device of the sensor

US8749231B2 · kind B2 · utility

5Cited by
4References
32Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 5, 2011
Grant dateJun 10, 2014
Priority date—
Expiry dateSep 25, 2032

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01R33/028
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Apparatuses, methods and systems of sensor sampling of a field are disclosed. One apparatus includes a magnetometer that includes a sensor responsive to an applied field. Embodiments of the sensor include an active device and oscillator circuitry, wherein the sensor generates an output signal having a frequency that is dependent on the applied field. The magnetometer further includes a bias reset controller for resetting a bias of the active device and a sampler for sampling the output signal. Further, a reset-rate of the resetting of the bias of the active device is high enough to influence 1/f noise generated by the active device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.