Patent ID: 6054895
Filing Date: 2000-04-25
Classification: H03F

Abstract:
In an amplifier circuit having an amplifier path and including a signal source, an intermediate amplifier stage, and a power amplifier stage connected sequentially, in series along said amplifier path, wherein said power amplifier stage includes a plurality of amplifiers operationally connected in parallel, and a plurality of correction means, each of said amplifiers subjecting an inputted signal to distortion shifts away from their intended values, each of said correction means being associated with one of said plurality of amplifiers and connected between an output of said intermediate amplifier stage and said associated amplifier, and each of said correction means for pre-distorting the signal input to said associated amplifier to compensate for the distortion caused by said associated amplifier, wherein each of said correction means includes means for compensating for phase and amplitude distortion caused by said associated amplifier.