Patent ID: 6867648

Claim:
A linearized amplification apparatus, comprising: means for dividing an input signal into a main channel signal and a subsidiary channel signal; a PAR (Peak-to-Average power Ratio) adjustment block for reducing a PAR of the main channel signal to generate a sub-main signal having a reduced PAR compared to the PAR of the main channel signal; an error extraction block for extracting an error signal from the subsidiary channel signal and amplifying the error signal, the amplified error signal corresponding to distortion components in the sub-main signal; and means for coupling the sub-main signal with the amplified error signal to generate an output signal having an increased PAR compared to the PAR of the sub-main signal, wherein the PAR adjustment block includes: means for clipping the main channel signal to a predetermined range; means for subdividing the clipped signal into a primary signal and a secondary signal, and providing the secondary signal to the error extraction block; means for delaying the primary signal by a predetermined time; and an amplification module for pre-distorting and amplifying the delayed primary signal to output the sub-main signal.