| 摘要 |
PROBLEM TO BE SOLVED: To suppress deterioration of the reception quality caused by an interference wave, while suppressing increase in circuit scale. SOLUTION: An image interference evaluation circuit 6 evaluates image interference of an intermediate frequency signal, at the setting of a local oscillation frequency in the upper side or lower side of a reception frequency, and an upper side/lower side instructing circuit 7 gives instructions to a local oscillator 4 to output local frequency, by setting either of the frequency of the upper side or of the lower side of the reception frequency the local oscillation frequency. COPYRIGHT: (C)2006,JPO&NCIPI
|
