Fractional-N frequency synthesizer using delta-sigma modulator in divider control circuit
US5079521A · kind A · utility
60Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1990 |
| Grant date | Jan 7, 1992 |
| Priority date | — |
| Expiry date | Nov 21, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/1976
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A fractional-N frequency synthesizer having a programmable divider and a control circuit therefor, wherein said control circuit incorporates a digital delta-sigma modulator operating as an interpolator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.