Methods and apparatus for tuning devices having mechanical resonators
US8319566B2 · kind B2 · utility
5Cited by
33References
5Claims
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Key dates
| Filing date | Feb 3, 2010 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Feb 3, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2009/02204
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for tuning devices having mechanical resonators are described. In one implementation, a mechanical resonator and a phase shifter are configured in a feedback loop, so that the phase shifter shifts the phase of the resonator output signal. The amount of phase shift induced by the phase shifter may be variable. In another implementation, an LC tuning subcircuit is coupled to a mechanical resonator. In some implementations, the LC tuning subcircuit has a variable capacitance. One or more of the apparatus described herein may be implemented as part, or all, of a microelectromechanical system (MEMS).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.