Apparatus and methods for PLL-based gyroscope gain control, quadrature cancellation and demodulation
US9644963B2 · kind B2 · utility
3Cited by
28References
17Claims
0Family size
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Key dates
| Filing date | Mar 18, 2014 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Sep 1, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/099
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
This application discusses simplified interface circuits for a gyroscope. In an example, an interface can include an automatic gain control (AGC) circuit configured to couple to driver for a proof mass of a gyroscope sensor and to drive the proof-mass to oscillate at a predefined oscillation amplitude, and a phase-locked loop (PLL) configured to receive sensed oscillation information from the proof-mass and to provide at least a first phase signal synchronized with a sinusoidal waveform of the sensed oscillation information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.