Power amplifying apparatus and mobile communication terminal
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United States of America Patent
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Sep 15, 2009
Grant Date -
Mar 6, 2008
app pub date -
Aug 17, 2007
filing date -
Sep 1, 2006
priority date (Note) -
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Abstract
A power amplifying apparatus includes an input terminal configured to receive an input signal, a first power amplifier biased for class A or class AB operation which is configured to amplify the input signal, an output terminal connected to an output of the first power amplifier, a second power amplifier biased for class C operation which is configured to receive and amplify a part of the input signal, and a switch connected between an output of the second power amplifier and the output terminal.
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