Sigma-delta modulation with reduction of spurs using a dither signal
US8514118B2 · kind B2 · utility
11Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 23, 2011 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Feb 16, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/3008
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method includes operating on a sigma-delta modulated signal to reduce a dither signal component in one of a first signal and a second signal, the first signal being an integer portion corresponding to a digital frequency ratio and the second signal corresponding to a fractional portion of the digital frequency ratio. In at least one embodiment of the method, the operation is performed digitally in a frequency synthesizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.