Method for re-centering a VCO, integrated circuit and wireless device
US9515666B2 · kind B2 · utility
6Cited by
20References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2015 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Jan 27, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L2207/06
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of re-centering a voltage controlled oscillator of a wireless device comprising a phase locked loop circuit is described. The method comprises receiving an input frequency signal at a phase detector of the phase locked loop circuit from a frequency source; generating an oscillator signal based on the received frequency signal; selectably opening a feedback loop of the phase locked loop circuit when in a calibration mode of operation, performing coarse frequency tuning of the oscillator output signal; performing fine frequency tuning of a coarsely adjusted oscillator output signal; and closing the feedback loop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.