Delta-sigma modulator system and method
US6920182B2 · kind B2 · utility
26Cited by
19References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 9, 2001 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Feb 22, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/3022
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention discloses a system and method for improving the out-of-band noise response of a multi-order delta-sigma modulator. The system and method includes programmable delta-sigma modulators which may be programmed to vary the reference signals at each modulator stage subsequent to the first stage relative to the reference signal of the first modulator stage. The resulting signal output will then typically exhibit the enhanced noise suppression characteristics of a dithered signal without the added circuitry and power required of a dithering apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.