Adaptive bias circuit and power amplifier
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United States of America Patent
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May 10, 2016
Grant Date -
Aug 27, 2015
app pub date -
Sep 26, 2014
filing date -
Feb 24, 2014
priority date (Note) -
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Abstract
A bias circuit may include an envelope detecting unit detecting an envelope of an input signal, a source voltage generating unit generating a source voltage using a power supply voltage, and an envelope amplifying unit receiving the power supply voltage and the source voltage as a driving voltage and amplifying an envelope signal detected by the envelope detecting unit to generate a first bias voltage.
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