Digital phase correlator
US4604582A · kind A · utility
56Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1985 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Jan 4, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0037
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A digital phase correlator compares the relative phase of two or more high-frequency clocks and corrects for any detected phase difference. The phase detector includes a pair of flip-flops whose output is an indication of which of the two clock pulses is leading the other. The output of the flip-flop controls, through a circuit including a rotating shift register and a multitap delay line, the delay introduced to one of the clocks in a manner such that the phase difference between the clocks is reduced to a minimum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.