Patent ID: 6531917
Filing Date: 2003-03-11
Classification: H03F,H03H

Abstract:
A non-linear distortion compensating apparatus for compensating non-linear distortion of an amplifying means, the apparatus comprising:predistortion signal generating means for generating a predistortion signal for compensating amplitude distortion in response to a level of an input signal of said amplifying means; and amplitude correcting means for using said predistortion signal generated by said predistortion signal generating means to correct an amplitude of said input signal at a preceding stage of said amplifying means, wherein said predistortion signal generating means includes limiter means in which when said amplitude of said input signal is held at a value smaller than a first predetermined level said predistortion signal is not used to correct said amplitude of the input signal by said amplitude correcting means, and when said amplitude of said input signal is held at a value larger than a second predetermined level larger than said first predetermined level said predistortion signal is used to correct the amplitude of the input signal by said amplitude correcting means.