Reduction of digital-to-analog converter distortion using constellation rotation
US7990298B1 · kind B1 · utility
10Cited by
4References
27Claims
0Family size
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Key dates
| Filing date | Mar 18, 2010 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Mar 18, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/66
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for signal conversion includes generating a complex digital signal, which includes digital In-phase (I) and Quadrature (Q) components, for conversion into respective analog I and Q components by first and second Digital-to-Analog Converters (DACs). A distortion generated by the DACS in the analog I and Q components is reduced by applying a phase rotation to the complex digital signal. After applying the phase rotation, the digital I and Q components of the complex digital signal are converted into the respective analog I and Q components using the first and second DACs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.