Frequency sampling phase detector
US7436921B1 · kind B1 · utility
2Cited by
37References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2004 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Jul 2, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0087
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention is an apparatus for determining the phase difference between a reference frequency signal and an input signal. The frequency sampling phase detector of the present invention may include a phase detector coupled with sample and hold circuitry. The frequency sampling phase detector of the present invention may reduce the frequency of an input signal suitable for proportional and linear phase detection by the phase detector. Advantageously, the frequency sampling phase detector of the present invention may reduce power consumption over conventional phase detectors in combination with frequency dividers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.