Patent ID: 6720829
Filing Date: 2004-04-13
Classification: H03F

Abstract:
A distortion-compensated amplifying circuit for amplifying a signal and compensating for distortion that occurs at a time of amplifying the signal, comprising:two amplifying sections placed in parallel each for performing a signal amplifying process; a first combining and distributing section supplied with an original signal including a carrier component and a first distortion signal having a frequency equal to a frequency of distortion that occurs when the original signal is amplified by each of the two amplifying sections, the first combining and distribution section for combining the original signal and the first distortion signal together and then distributing the combined signal into two signals for output to the two amplifying sections; a second combining and distributing section for combining the two signals supplied from the two amplifying sections and then distributing the combined signal into two signals; and a combining section for combining the two signals supplied from the second combining and distributing section for output, wherein each of the first and second combining and distributing sections is a hybrid circuit that outputs two signals with a predetermined phase difference.