| 摘要 |
<p>Disclosed are a transmitter apparatus, a wireless communication apparatus and a transmission method whereby the time difference between the amplitude signal and the phase signal can be controlled to an optimum point to obtain a stable characteristic independently of the modulated signal and without increasing the circuit scale. A multiplier (170) multiplies a digital amplitude signal, which is obtained by analog-to-digital converting an amplitude signal, by a digital angle modulated signal, which corresponds to a signal obtained by analog-to-digital converting an angle modulated signal, to artificially generate a digital modulated signal corresponding to a signal obtained by analog-to-digital converting a modulated signal generated by an amplitude modulator (140). A distortion calculating unit (180) calculates the distortion of the digital modulated signal. A control unit (190) controls, based on the distortion of the digital modulated signal, the delay time. A delay adjusting unit (130) adjusts the delay time until the time when the amplitude signal is input to the amplitude modulator (140) or the delay time until the time when the angle modulated signal is input to the amplitude modulator (140).</p> |
