ELECTRONIC DEVICE WITH A DISTORTION CORRECTION CIRCUIT FOR A POWER AMPLIFIER, AND ASSOCIATED METHODS

ELECTRONIC DEVICE WITH A DISTORTION CORRECTION CIRCUIT FOR A POWER AMPLIFIER, AND ASSOCIATED METHODS

An electronic device includes a radio frequency (RF) modulator, a power amplifier, and a distortion correction circuit coupled between the RF modulator and the power amplifier. The distortion correction circuit includes a variable gain amplifier coupled between the RF modulator and the power amplifi...

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1. Verfasser: PEI ALEXANDER X
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Sprache:eng
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AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
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description An electronic device includes a radio frequency (RF) modulator, a power amplifier, and a distortion correction circuit coupled between the RF modulator and the power amplifier. The distortion correction circuit includes a variable gain amplifier coupled between the RF modulator and the power amplifier, and an amplitude correction control loop. The amplitude correction control loop includes a first logarithmic converter having an input coupled to the REF modulator, a second logarithmic converter having an input coupled to an output of the power amplifier, and a difference circuit coupled to outputs of the first and second logarithmic converters for controlling the gain of the variable gain amplifier for correcting distortion in an output signal from the power amplifier.
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BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
title ELECTRONIC DEVICE WITH A DISTORTION CORRECTION CIRCUIT FOR A POWER AMPLIFIER, AND ASSOCIATED METHODS
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