| 摘要 |
PROBLEM TO BE SOLVED: To provide a receiver and a method of attenuating a disturbance signal in which a disturbance signal such as an image signal that disturbs reception in a wireless apparatus is attenuated. SOLUTION: A receiver 10 comprises, for producing an intermediate frequency signal by converting the frequency of a radio frequency signal from a band pass filter 12 by a frequency mixer 14, a disturbance signal attenuation circuit 16 including a trap circuit 18 on the pre-stage of the frequency mixer 18, supplies a control voltage 110 based on setting information of a reception frequency to a varicap 22 in the trap circuit 18, and produces a resonance frequency in accordance with the set information to attenuate a disturbance signal such as an image signal in the radio frequency signal. COPYRIGHT: (C)2007,JPO&INPIT
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