Reduction of digital-to-analog converter distortion using...

Details Reduction of digital-to-analog converter distortion using... Reduction of digital-to-analog converter distortion using...

2011-08-02

2011-08-02

Mai, Lam T (Department: 2819)

Coded data generation or conversion

Converter compensation

C375S260000

Reexamination Certificate

active

07990298

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.

REFERENCES:
patent: 6393083 (2002-05-01), Beukema
patent: 7098828 (2006-08-01), San et al.
patent: 7227482 (2007-06-01), San et al.
patent: 7620113 (2009-11-01), Inagawa

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