Method and circuit for determining resonant frequencies of a resonant device
US9709533B2 · kind B2 · utility
1Cited by
6References
21Claims
0Family size
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Key dates
| Filing date | Dec 20, 2012 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Dec 23, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H13/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method determines a resonance frequency of a resonant device. The method includes stimulating the resonant device with a periodic input signal having a frequency in a frequency interval; determining a frequency value for said periodic input signal in said frequency interval for which a phase-difference between said periodic input signal and a corresponding periodic output signal of the resonant device is minimum; generating a flag indicating that a resonance frequency has been determined; and generating signals representing said resonance frequency as a value of the frequency of said periodic input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.