| 摘要 |
It is an object of the present invention to output a stable output signal having little distortion by adjusting a delay time of an amplitude signal path and a phase signal path. <??>In an amplitude phase extracting part (2), amplitude data and phase data are extracted from a transmit data signal and outputted. Then, in an amplitude modulating part (3), the amplitude of the amplitude data is modulated and an amplitude modulating signal is inputted to a non-linear amplifying part (5) as a source voltage value. Further, in a phase modulating part (4), the phase of the phase data is modulated and a phase modulating signal is supplied to the non-linear amplifying part (5) as an input signal. In the non-linear amplifying part (5), the phase modulating signal is multiplied by the amplitude modulating signal to output an RF signal with a prescribed gain amplified. Here, a delay part (12) is provided in a pre-stage of the amplitude modulating part (3) and a delay part (13) is provided in a pre-stage of the phase modulating part (4), respectively to adjust the delay time of an amplitude signal path and a phase signal path. Thus, the quantities of delay are allowed to correspond to each other to reduce a distortion generated due to the difference in delay time between both the paths. <IMAGE>
|
