METHOD FOR CONTROLLING FEED-FORWARD AMPLIFIER, AND FEED- FORWARD AMPLIFIER USING METHOD

摘要

PROBLEM TO BE SOLVED: To perform distortion compensating operations, based on the presence of each input of multiple transmission signals. SOLUTION: Regardless of the number of signals and the output power level, a common amplifier for normally performing an optimum distortion compensating operation can recognize the presence of the respectively inputted transmission signals and the frequency of each input signal from the presence of the transmission signals, in a feed-forward amplifier for amplifying the multiple transmission signals. A wave detector is arranged in an input signal path, to detect the presence of the signal, based on which the distortion is compensated.