Dynamic range ADC's
US8368574B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 26, 2011 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Jun 23, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/414
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A Sigma-Delta analog-to-digital converter (ADC) having a direct time filter (DTF) in the feed-back path of the Sigma-Delta loop of the ADC. A Sigma-Delta ADC having a modified DTF in the feed-back path of the Sigma-Delta loop of the ADC is also disclosed. The ADC may also include a noise reduction block that splits an incoming RF signal, samples one of the split signals with a primary ADC, corrects for gain and delay inaccuracies and inverts the signal, applies the inverted signal to a primary digital-to-analog converter (DAC), combines the output of the DAC with the second split signal, which is then applied to a difference ADC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.