Method and apparatus for eliminating dead zone in phase locked loops using binary quantized phase detectors
US6934869B1 · kind B1 · utility
3Cited by
11References
13Claims
0Family size
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Key dates
| Filing date | Sep 12, 2001 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Aug 4, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/033
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for eliminating dead zone in a phase locked loop with binary quantized detectors are described. Dead zone can be eliminated by changing the threshold used to quantize the cross point sample. A quantized cross point sample is integrated in order to set a new threshold. The integration may be performed during data transitions to eliminate threshold drift during long sequences where no transitions occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.