Schaltungsanordnung zur frequenzabhängigen Kompensation des Klirrens zweiter Ordnung in einem Übertragungssystem

摘要

This transmission system exhibits a driver amplifier which intensity-modulates an information signal to be transmitted onto an electrical or optical transmitter, in which system the electrical or optical transmitter superimposes a frequency-dependent second-order distortion on the information signal, a push-pull amplifier (10) which generates a second-order amplifier distortion dependent on the frequency of the information signal (N) supplied to it being used as driver amplifier, and a distortion matching element (20,30) being arranged in the signal path of the information signal (N) between the push-pull amplifier (10) and the transmitter (40), which element, for compensating for the transmitter distortion, modifies the information signal (N) on which a frequency-dependent second-order amplifier distortion is superimposed and which is supplied by the push-pull amplifier (10), in such a manner that the frequency-dependent second-order amplifier distortion has the opposite phase to the frequency-dependent second-order transmitter distortion generated by the transmitter (40) and its magnitude corresponds to that of the latter.