Control of a quartz crystal oscillator frequency tuning array
US10944358B2 · kind B2 · utility
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4References
14Claims
0Family size
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Key dates
| Filing date | Dec 3, 2018 |
| Grant date | Mar 9, 2021 |
| Priority date | — |
| Expiry date | Dec 3, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/183
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A quartz crystal resonator is connected to an array of switchable capacitors or resistors. The switched actuation of elements of the array is controlled by bits of a control word. At least one of the bits of the control word is controlled by pulse width modulation to effectuate a tuning of the oscillation frequency of the quartz crystal resonator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.