Patent ID: 6307435
Filing Date: 2001-10-23
Classification: H03F

Abstract:
A method of linearizing an output signal relative to an input signal amplified by an amplifier distorting the output signal, the output signal being derived from an input signal, the input signal having a normalized input amplitude for providing a normalized input signal, the output signal having a normalized output amplitude for providing a normalized output signal, the method comprising the steps of,computing predistortion for canceling distortion of the output signal relative to the input signal, the distortion produced during amplification of the input signal by the amplifier, the predistortion computed from a predetermined parameter,predistorting the input signal by the predistortion for providing a predistorted input signal, andamplifying the predistorted input signal to generate the output signal, the normalized output signal being linearized to the normalized input signal, the predistortion of the input signal relative to the output signal provides a linear slope of a linearized curve of the normalized output signal over the normalized input signal, the predetermined parameter for determining the linearized curve, the linearized curve intersecting an operating point at a normalized maximum input level of the normalized input signal and below a normalized maximum output level of the normalized output signal.