| 摘要 |
<p>User equipment includes a convertor (13) that converts transmission target frequency domain signal into time domain signal; a quadrature modulator (17-20) that applies quadrature modulation to the time domain signal; a cancellation signal generator (13(2)-20(2)) that generates image leakage cancellation signal by converting image signal into time domain signal, and applying the quadrature modulation, wherein the image signal has a frequency component that is symmetrical to the transmission target signal with respect to center of transmission frequency range; an adjuster (25, 26, and 27) that monitors the frequency component of the image signal in output signal from the quadrature modulator, and that adjusts amplitude and a phase of image leakage cancellation signal so as to cancel the frequency component; and a combiner (20(3)) that combines output signal from the quadrature modulator with image leakage cancellation signal, and that provides a power amplifier with combined signal.</p> |
