APPARATUS AND METHOD FOR BROADBAND LINEARIZATION OF HIGH POWER AMPLIFIER

摘要

Disclosed is a high-power amplifier implementing wideband linearization. The high-power amplifier includes: a first filtering unit that separates an input RF signal into signal components of respective center frequencies using a plurality of bandpass filters having identical cutoff frequencies; an amplifying unit to amplify the signal components of the respective center frequencies to generate an amplified signal; a canceling unit generating a cancellation signal for removing an intermodulation distortion signal associated with each of the center frequencies by using the signal components of the respective center frequencies; a coupling unit for generating an output signal by coupling the amplified signal and the cancellation signal; and a power controller that measures energy for each of the signal components of each center frequency in the generated output signal, and controls the cancellation signal based on the measured energy.