Harmonic-rejection power amplifier
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United States of America Patent
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Apr 30, 2013
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N/A
app pub date -
Apr 13, 2011
filing date -
Apr 13, 2010
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Abstract
A harmonic-rejection power amplifier is disclosed. In an embodiment, the harmonic-rejection power amplifier includes a plurality of stages, each stage comprising a respective signal-generation component coupled to a respective power amplifier, wherein the respective signal-generation component is configured to output a respective signal having a respective phase, and wherein the respective power amplifier is configured to output an amplified version of the respective signal. In the harmonic-rejection power amplifier, each respective phase differs from each other respective phase by a respective amount that is predefined based on a number of stages in the plurality of stages, and the plurality of stages are coupled in parallel to a combiner configured to combine the output of each respective power amplifier into a combined output. At least one harmonic in the combined output may be at least partially rejected.
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