Calibration circuit of a frequency generator, and compensation circuit thereof
US8736389B2 · kind B2 · utility
2Cited by
4References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2011 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Nov 3, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L1/028
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A calibration circuit includes at least two compensation circuits and a comparator. The at least two compensation circuits are coupled to an input signal for outputting at least a first compensation signal and a second compensation signal respectively. The comparator is coupled to the first compensation signal and the second compensation signal for outputting a calibration signal, where the calibration signal is used for determining an oscillation frequency of a crystal oscillator to achieve a purpose of frequency compensation with a temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.