Error feed-forward direct digital synthesis
US6333649A · kind A · utility
20Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2000 |
| Grant date | Dec 25, 2001 |
| Priority date | — |
| Expiry date | Aug 31, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/902
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A circuit arrangement and method for direct digital synthesis (DDS). In various embodiments, the invention feeds forward the phase error introduced by a quantizer in a DDS system. The error is fed forward to adjust the sine and cosine values that are obtained based on output from the quantizer. Correction of the sine and cosine values based on the fed-forward error values results in a significant reduction in the effect of spectral artifacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.