Dynamic damping in a quartz oscillator
US8933759B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2013 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Jul 13, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/10
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A shear-mode quartz resonator designed to mechanically oscillate at a predetermined frequency and electronic circuits for inhibiting oscillation of the shear-mode quartz resonator in response to externally applied mechanical forces which otherwise induce mechanical vibration of the shear-mode quartz resonator at frequencies significantly less than the predetermined frequency. The shear-mode quartz resonator includes a cantilevered quartz beam having relatively large metallic electrodes attached on opposite sides thereof, the relatively large metallic electrodes, in use, being coupled to an external oscillator circuit. The beam also has relatively smaller sense and rebalance electrodes attached on the same opposite sides of said quartz beam as said relatively large metallic electrodes. The relatively smaller sense and rebalance electrodes being coupled, in use, with said electronic circuits for inhibiting oscillation of the shear-mode quartz resonator in response to externally applied mechanical forces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.