Loop delay compensation for a digital power amplifier
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United States of America Patent
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Jul 2, 2002
Grant Date -
Oct 4, 2001
app pub date -
Feb 28, 2001
filing date -
Mar 3, 2000
priority date (Note) -
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Abstract
A modulator loop is described having an associated band pass frequency range and including a switching stage having a first delay associated therewith. The modulator loop also includes a modulator stage having a feedback input. The output of the modulator stage is coupled to the input of the switching stage. A first feedback path is coupled between the output of the switching stage and the modulator stage. A notch filter corresponding to the band pass frequency range is coupled between the output of the modulator stage and the feedback input of the modulator stage for compensating for the first delay.
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