Power amplifier with wide dynamic range am feedback linearization scheme
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United States of America Patent
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Aug 22, 2017
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Mar 17, 2014
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Mar 15, 2013
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Abstract
Circuitry, which includes a package interface, a radio frequency (RF) amplification circuit, and a closed-loop gain linearization circuit. The package interface receives an RF signal and provides an amplified RF signal. The RF amplification circuit amplifies the RF signal in accordance with a gain of the RF amplification circuit so as to generate the amplified RF signal. In one embodiment, the closed-loop gain linearization circuit is configured to endogenously establish a target gain magnitude using the RF signal and linearize the gain of the RF amplification circuit in accordance with the target gain magnitude. By endogenously establishing the target gain magnitude using the RF signal, the closed-loop gain linearization circuit can provide linearity with greater independence from external control circuitry.
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