Power amplifier amplitude modulator system and method
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United States of America Patent
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Sep 13, 2011
Grant Date -
Jan 15, 2009
app pub date -
Jul 11, 2007
filing date -
Jul 11, 2007
priority date (Note) -
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Abstract
A system for controlling amplifier power is provided. The system includes a voltage envelope detector receiving a voltage signal and generating an attenuated voltage envelope signal. A current envelope detector receives a current signal and generates an attenuated current envelope signal. A controller receives power level data and generates attenuation control data for the voltage envelope signal and the current envelope signal. A detector receives the voltage envelope signal and the current envelope signal and generates a control signal based on the greater of the voltage envelope signal and the current envelope signal. A power amplifier level controller receives the control signal and generates a power amplifier level control signal.
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