Switching power amplifier using a frequency translating delta sigma modulator
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United States of America Patent
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Apr 4, 2006
Grant Date -
Aug 18, 2005
app pub date -
Feb 17, 2004
filing date -
Feb 17, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A radio frequency (RF) switching power amplifier comprises: a switching amplifier 203 to provide an amplified signal within an RF band; and a delta signal modulator (DSM) 207 that is operable; to control the switching amplifier in a feedback configuration, to process an input signal within an intermediate frequency (IF) band where the input signal corresponds to a base band signal and the amplified signal, and to provide an output signal within the RF band to drive the switching amplifier. Certain embodiments allow for or compensate for a floating or variable IF band and multiple RF bands.
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