Patent ID: 6545535
Filing Date: 2003-04-08
Classification: H03F

Abstract:
A predistorter for predistorting an amplifier input signal of an amplifier, which predistorter has a predistorter input signal and an output signal, wherein the predistorter includes means for adding distortion to said predistorter input signal such that said output signal includes a first distortion, which first distortion is arranged to compensate for a second distortion introduced by said amplifier when said output signal serves as said amplifier input signal of said amplifier, and wherein said means for adding distortion includesmeans for producing a first signal component, which first signal component is linearly dependent on said predistorter input signal; means for producing a second signal component, which second signal component is dependent on a high pass filtered non-linearity dependent on said predistorter input signal; and means for combining said first signal component and said second signal component to form said output signal.