Radio frequency transmitter having an amplifier with power supply modulation
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United States of America Patent
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May 21, 2013
Grant Date -
Jul 28, 2011
app pub date -
Jan 22, 2010
filing date -
Jan 22, 2010
priority date (Note) -
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Abstract
A circuit including a carrier amplifier having an input, an output, a first transistor coupled to a first power supply voltage terminal for receiving a modulated power supply voltage, and a second transistor coupled to a second power supply voltage terminal for receiving a fixed power supply voltage is provided. The circuit further includes a peaking amplifier having an input coupled to the input of the carrier amplifier and an output coupled to the output of the carrier amplifier.
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