| 摘要 |
<p>Excellent compensation of the distortion is realized with a distortion-compensated amplifier device that compensates a distortion that is generated in a main amplifier, through the respective operations of a circuit comprised of a distortion-detecting loop and a distortion-compensating loop and a pre-distortor. In a distortion-detecting loop, the signal is distributed. With respect to one distribution signal, a vector adjuster 2 performs vector adjustment of it and the pre-distortor 3 generates a distortion. A main amplifier 4 amplifies this signal. The resulting amplification signal and the other distribution are composed, whereby a distortion component is detected. In a distortion-compensating loop, that amplification signal and this distortion component are composed to thereby eliminate the distortion component from the amplification signal. In a control part, a distortion component level detecting means 12 detects the levels of the distortion component that is detected. Vector adjusting/controlling means 14 and 15 controls the vector adjusting means 2 to thereby make the average value of those levels small. On the other hand, pre-distortor controlling means 16 and 17 controls the pre-distortor 3 to thereby make the peak values of those levels.
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