Increased frequency resolution in a synthesizer
US5495505A · kind A · utility
7Cited by
16References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1990 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | Dec 20, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/0328
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A direct digital frequency synthesizer increases the frequency resolution of the analog output signal by using fractionalization techniques. The best integer value I.sub.FR of a digital signal is determined and the next integer value I.sub.FR +1 of a digital signal is used to determine a weighted fractionalized value of the digital signal. The fractionalized value of the digital signal is used to synthesize the analog output signal having increased frequency resolution. In addition, IFR and IFR+1 are optimally distributed during the weighting process to ensure a minimum cumulative phase error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.