LINEAR power AMPLIFYING DEVICE

摘要

PURPOSE: A linear power amplifying device is provided to be relatively stable against external condition change and have relative great allocation. CONSTITUTION: The linear power amplifying device comprises: an error signal operation unit operating error between signal(x(t)) being inputted in a main power amplifier and signal(y(t)) outputted from the main power amplifier and detecting reverse distortion signal(e(t)) corresponding to the amplification distortion of the main amplifier; and an estimated input signal generating unit(300) generating estimated input signal(u(t)) obtained by adding the reverse distortion signal to the input signal inputted to the main power amplifier and presenting it as the input of the main power amplifier.