| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a signal in a band higher than a receiving band of a tuner from being mixed from the tuner into another system via another antenna as noise and to prevent a noise component converted to the same frequency as that of desired waves from being mixed from the antenna into the tuner. Ž<P>SOLUTION: In the television tuner 3, a low-pass filter 32 which defines a band higher than a television signal frequency band as a blocking band and through which a DC signal can pass is provided on a signal propagation path between an input terminal 31 to which a television signal receiving antenna 21 is connected and a high-pass filter 33 defining a band lower than the television signal frequency band as a blocking band. A supply voltage is supplied to an amplifier 24 of the television signal receiving antenna 21 from the input terminal 31 via the low-pass filter 32. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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