To down size a distortion-correcting circuit. In the case of a distortion-correcting
circuit 1, a basic-wave-amplifying section 10 and a distortion-extracting
section 20 have the same circuit configuration. Therefore, the basic-wave-amplifying
section 10 and the distortion-extracting section 20 have almost equal
input impedance and output impedance and make it possible to distribute and synthesize
signal powers without using any power distributor or any power synthesizer. Moreover,
because the distortion-correcting circuit 1 is constituted by only a transistor,
a resistance, a capacitor, or an inductor, it is easy to downsize the circuit 1
and constitute the circuit 1 into an integrated circuit. Therefore, a characteristic
of the basic-wave-amplifying section 10 and that of the distortion-extracting
section 20 are further similar to each other and it is possible to more
properly distribute or synthesize signal powers without using any power distributor
or any power synthesizer.