N-way circular phase interpolator for generating a signal having arbitrary phase
US6329859A · kind A · utility
43Cited by
4References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2000 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Mar 23, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/131
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An N-way Circular Phase Interpolator interpolates the N phases of a reference clock signal to generate a tunable clock. By using more than two phases for interpolation, high excess frequencies as well as high precision (i.e. small jitter) are achieved. The N-way Circular Phase Interpolator provides for analog filtering in the phase domain, which attenuates the out-of-band phase noises thus further reducing the output jitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.