Exponential current source to linearize an output power control profile of a power amplifier
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United States of America Patent
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Issued Date -
Sep 11, 2003
app pub date -
Mar 11, 2002
filing date -
Mar 11, 2002
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Abandoned
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Abstract
The power control profile of a power amplifier circuit has improved linearity by supplying an exponential current source. The current source is an exponent function of the control voltage. There is obtained improved linearity of the power output vs control voltage profile for the power amplifier circuit. Advantageously, the exponential current source provides for a temperature compensated power amplifier circuit as well as the circuit having improved performance for variations in a power supply voltage.
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