Fast lock time phase locked loop
US5081427A · kind A · utility
13Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1990 |
| Grant date | Jan 14, 1992 |
| Priority date | — |
| Expiry date | Nov 29, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/081
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A fast locking phase locked loop includes a first integrator that provides a signal representing a function of the mathematical or ideal integral of the phase difference between an input signal and a feedback signal. A voltage controlled oscillator is coupled to the first integrator and provides a signal to a phase shifter that provides the phase shifted signal that represents a function of the phase of the signal from the VCO, and a function of the integral of the phase difference between the integrated signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.