Patent ID: 6925106
Filing Date: 2005-08-02
Classification: H03F

Abstract:
1. A predistortion type distortion compensation apparatus for compensating distortion occurring in an amplifier for amplifying an input signal, comprising: distortion generating means for generating distortion in an input signal, input signal level detecting means for detecting a level of the input signal, distortion control means for controlling the distortion generated by the distortion generating means by using a control value corresponding to the level of the input signal detected by the input signal level detecting means, distortion component level detecting means for detecting a level of distortion component contained in the amplified signal issued from the amplifier, integrating means for integrating the level of the distortion component detected by the distortion component detecting means in every level of the input signal detected by the input signal level detecting means, and control value updating means for updating the control value corresponding to the level used by the distortion control means so that the integration result of every level of the input signal obtained from the integrating means may be small.