Non-linear distortion reduction device for amplifier stage has amplifier output combined via adder with error signal obtained by combining delayed input signal with amplifier output signal

摘要

The distortion reduction device has an error signal generated by combining a delayed amplifier stage input signal with the output signal of an amplifier (V1) exhibiting the non-linear distortion and supplied to an adder (AD1) for summation with the amplifier output signal to provide an output signal (u5) with a reduced distortion component, supplied to the output of the amplifier stage (VS). The error signal is provided by a device having at least one transmission element (H31,H32) with a negative group delay time and an amplifier (V21,V22) with a positive group delay time.