DC BIAS ESTIMATION OF A RADIO FREQUENCY MIXER
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United States of America Patent
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Issued Date -
Sep 18, 2014
app pub date -
Mar 14, 2013
filing date -
Mar 14, 2013
priority date (Note) -
Abandoned
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Abstract
Apparatus and methods for estimating a direct current offset in an upconverter are disclosed. Samples of a first signal are received. Values of a compensation signal are retrieved. For example, the compensation signal can be a component in a modified baseband signal, wherein the modified baseband signal is upconverted, downconverted, and filtered to generate the first signal. An estimate of a first DC offset induced by an upconverter is generated based at least partly on at least two selected samples of the first signal and corresponding values of the compensation signal.
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