Patent ID: 6556079
Filing Date: 2003-04-29
Classification: H03F

Abstract:
A distortion compensating device for compensating distortion generated in the device, comprising:means for detecting an envelope voltage of an input signal supplied to the device; means for generating an amplitude controlling signal adapted for controlling an amplitude of the input signal in accordance with the envelope voltage detected by the means for detecting an envelope voltage; means for controlling the amplitude of the input signal based on the amplitude controlling signal generated by the means for generating an amplitude controlling signal, wherein the distortion remaining in an output of the device is compensated based on an output of the means for controlling the amplitude; matching means for rendering a phase of the distortion included in the output of the means for controlling the amplitude opposite to a phase of the distortion remaining in the output of the device; means for generating a phase controlling signal adapted for controlling a phase of the input signal in accordance with the envelope voltage detected by the means for detecting; and means for controlling the phase of the input signal based on the phase controlling signal generated by the means for generating the phase controlling signal, wherein the matching means is connected between a posterior portion of the means for controlling the amplitude and an anterior portion of the means for controlling the phase.