Phase detector with extended linear operating range
US7567642B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 2004 |
| Grant date | Jul 28, 2009 |
| Priority date | — |
| Expiry date | Jan 31, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0067
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for extending the linear range of a phase detector. In one embodiment, a limited range phase difference is generated between selected edges of first and second input signals, and an excursion of the limited range phase difference beyond a predetermined threshold is detected. In response to detecting the excursion of the limited range phase difference beyond a threshold, an edge of the first or second input signal is prevented from influencing subsequent generation of the limited range phase difference, and a compensated phase difference is generated, derived from the limited range phase difference and including a correction component which compensates for the effect of preventing said edge from influencing subsequent generation of the limited range phase difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.