Time-interleaved and sub-band reconstruction approaches to digital-to-analog conversion for high sample rate waveform generation
US9007250B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2013 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Oct 22, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/0612
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The perceived sample rate at which a DAC can operate can be increased by allowing multiple DACs to process different portions of a digital signal in parallel. In this way, the outputs of multiple DACs can be combined into a single analog signal to achieve the desired speeds and resolutions of the analog output. This parallel processing can be implemented using a time-interleaving technique or a sub-band reconstruction technique. Pre-distortion can be applied to the digital input signal to compensate for degradation detected in the analog output signal. By applying pre-distortion, waveforms having high sampling rates can be efficiently generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.