PREDISTORTION LINEARIZER

摘要

PURPOSE: A predistortion linearizer is provided to increase the integration of a circuit by using a simple circuit instead of an attenuator to control the size of a distortion signal. CONSTITUTION: A parallel predistortion linearization system(201) improves the linearity of a nonlinear amplifier by generating a signal which has the same size of a distortion signal while having the opposite phase to the distortion signal. A first resistor(202) is connected between the input terminal and the output terminal of the parallel predistortion linearization system. A second resistor(203) is connected to one end of the first resistor and is interposed between the output terminal of the parallel predistortion linearization system and the ground. A power amplifier(204) is comprised of a nonlinear amplifier which is connected between the input terminal of the signal and the other terminal of the first resistor.