Method and apparatus for reducing dynamic range of a power amplifier
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United States of America Patent
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May 10, 2005
Grant Date -
Sep 30, 2004
app pub date -
Aug 8, 2002
filing date -
Aug 8, 2002
priority date (Note) -
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Abstract
An output-power threshold is selected such that one or more signal requirements is not outside a pre-determined range when output power of a polar transmitter is less than the output-power threshold. A determination is made whether the output power is less than the threshold. In response to a determination that the output power is less than the threshold, amplitude modulation of a polar signal transmitted by the polar transmitter is disabled. When the output power meets or exceeds the output-power threshold, the polar signal transmitted by the polar transmitter is both amplitude and phase modulated.
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