| 摘要 |
PROBLEM TO BE SOLVED: To provide a distortion compensation device that suppresses deterioration of a combined output high frequency signal.SOLUTION: The distortion compensation device includes: a distortion compensation section for performing distortion compensation on an input signal on the basis of a distortion compensation coefficient dependent on the input signal; a signal generation section for separating an output of the distortion compensation section into first and second constant amplitude signals having a phase difference based on the amplitude of the output of the distortion compensation section; a first adjustment section for multiplying the first signal by a first coefficient; a first amplification section for amplifying an output of the first adjustment section; a second adjustment section for multiplying the second signal by a second coefficient; a second amplification section for amplifying an output of the second adjustment section; a combination section for combining an output of the first amplification section and an output of the second amplification section; and an operation section for calculating the distortion compensation coefficient, the first coefficient and the second coefficient on the basis of the output of the distortion compensation section, the output of the first adjustment section, the output of the second adjustment section and an output of the combination section. |
