Sampling mixer, quadrature demodulator, and wireless devices

摘要

Sampling mixer that is able to suppress degradation of reception sensitivity due to second-order distortion component or aliasing components, quadrature demodulator, and a wireless device. In (101), samples the received signal based on a local signal having a predetermined frequency, the control signal generation unit (15), the sampling switch sampling switch (5) and (36) controls the filter operation sampling mixer generates a control signal, on the basis of the control signal, and filters the sample signal obtained in (5) sampling switch, delay controller reverse phase mixer and (2) phase mixer section (3), (117) But, depending on the desired reception frequency, and controls the phase difference between the control signal and the local signal.