System for analog to digital conversion with improved spurious free dynamic range
US9325339B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2012 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | May 7, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/1215
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Generally, this disclosure describes an apparatus, systems and methods for analog to digital conversion with improved spurious free dynamic range. The system includes a segmented ADC circuit with a plurality of interleaved ADC segments, the segmented ADC circuit configured to generate a digital signal including a channel with an associated channel frequency; a frequency down-converter circuit coupled to the segmented ADC circuit, the frequency down-converter circuit configured to frequency shift the digital signal by a frequency offset; a spur frequency prediction circuit coupled to the frequency down-converter circuit, the spur frequency prediction circuit configured to predict frequencies of spurs generated by the ADC segments, the prediction based on the number of ADC segments and based on the sampling rate of the digital signal; the spur frequency prediction circuit further configured to generate the frequency offset based on the predicted spur frequencies and based on a frequency band of the channel; and a filter circuit coupled to the frequency down-converter circuit, the filter circuit configured to remove one or more of the spurs from the frequency shifted digital signal to…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.