| 摘要 |
PURPOSE: A tuner module is provided to effectively suppress the interference of an adjacent channel while matching output impedance of the tuner. CONSTITUTION: A tuner(100) mixes input high frequency signal with oscillation frequency and outputs IF signal. A demodulator(200) demodulates the IF signal. A BPF(Band Pass Filter)(300) is arranged between the tuner and demodulator and passes a band of IF signal. An impedance matcher(400) is arranged between tuner and demodulator and is matched with the output impedance of tuner.
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