| 摘要 |
PROBLEM TO BE SOLVED: To provide a tuner capable of canceling noise components by a third harmonic among higher harmonic components of a local oscillation signal in the tuner which converts a signal of a carrier band into a base band signal or an intermediate frequency signal using a local oscillator. SOLUTION: The noise components by the third harmonic are canceled among the higher harmonic components of the local oscillation signal by multiplying a three-phase signal having phase differences which are different by 120°, respectively, by a received signal as the local oscillation signal, and canceling common-mode signals of each demodulation wave. COPYRIGHT: (C)2009,JPO&INPIT
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