Delta sigma modulator with multiple filters
US7385538B2 · kind B2 · utility
2Cited by
7References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2006 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Sep 29, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/3042
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Methods and devices for an improved delta sigma modulator. The delta sigma modulator has multiple filters with at least one high order filter processing the MSBs of the quantizer fractional output and at least one lower order filter processing the LSBs of the quantizer fractional output. The outputs of these filters are then combined with the input through a combiner with the result being received by the quantizer. The quantizer then produces the output integer bitstream along with the fractional bitstream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.