Patent ID: 8737527
Filing Date: 2014-05-27
Classification: H03F

Abstract:
1. A composite amplifier comprising: N amplifiers that sequentially receive N input signals to amplify and output the respective amplified N element signals of each of the N input signals, N being an integer greater than 1; a signal generator that generates a first signal that has signals having the predetermined value that are input into the amplifiers and a k-th signal that has signals having the predetermined value that are input into the first amplifier and the (k+1)th (k=2 to N−1) to N-th amplifiers and signals having an inverse value of the predetermined value that are input into the second to k-th amplifiers; an signal distributor that sequentially outputs the first to N-th signals in which a predetermined matrix is a mathematical expression (1) and which are acquired from the signal generator to the amplifiers, and a signal adder that adds the amplified N element signals for each the input signal; a feedback signal computer that multiplies an N-dimension vector, which is obtained by sequentially arraying addition results of the outputs for each of the input signals, by the inverse matrix of the predetermined matrix and computes the feedback signals for the amplifiers; and a corrector that corrects signal distortions of the amplifiers by using the feedback signals.