Quality of phase lock and loss of lock detector
US7952437B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 2009 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Dec 4, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/18
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A systems and methods for providing phase lock conditions detection, such as a quality of phase lock and loss of lock detection, are described herein. One exemplary method comprises detecting an output frequency, comparing the output frequency with a first reference signal, providing a first signal and a second signal as a function of the output frequency and first reference signal comparison, receiving a predetermined threshold from a second reference signal, monitoring a deviation of the first and second signals from the predetermined threshold, generating a third signal as a function of the deviation, comparing the third signal to a window threshold wherein the window threshold is set based on a predetermined loop variable, generating a fourth signal a function of the third signal and the window threshold comparison, and providing an alarm based on the fourth signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.