| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a distortion-compensating device that is superior in distortion characteristics and a method thereof in an EER distortion compensating device for separating a vector modulation signal into an amplitude signal and a phase signal, and recombining the separated signals. <P>SOLUTION: The distortion compensating device of an EER distortion modulation amplifying system separates the vector modulation signal into amplitude signal and phase signal, and recombining the separated signals. In the device, an amplitude-correcting section 100 calculates the distortion components of an amplitude modulation output signal of a power amplifier 58 and corrects the components, a phase error calculating section 102 calculates an error component of a phase modulation output signal of the power amplifier 58, a phase correcting section 103 calculates the phase rotation amount from the corrected amplitude component and further calculates the distortion components of the phase modulation output signal of the power amplifier 58 from the phase rotation amount and the phase error components calculated by the section 102. In this way, high-accuracy distortion compensation processing can be executed. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
