Phase detector with high precision
US6351153B1 · kind B1 · utility
11Cited by
6References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 30, 2000 |
| Grant date | Feb 26, 2002 |
| Priority date | — |
| Expiry date | Oct 30, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/085
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A phase detector is disclosed that detects the phase of two inputs with precision. A method and apparatus of phase detecting that subtracts out common errors due to temperature variations and supply voltage fluctuations. The phase detector and method preferably utilize digital circuitry such as exclusive OR gates and differential amplifiers to perform the accurate phase detection. The inputs and outputs may be attenuated or filtered to produce the desired results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.