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Television tuner for both analog and digital signal

  • US 20050046749A1
  • Filed: 08/23/2004
  • Published: 03/03/2005
  • Est. Priority Date: 08/26/2003
  • Status: Active Grant
First Claim
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1. A television tuner, comprising:

  • an intermediate frequency amplifier to which a first intermediate frequency signal based on an analog television signal or a second intermediate frequency signal based on a digital television signal is input;

    a first SAW filter to which the first intermediate frequency signal output from the intermediate frequency amplifier is input;

    a second SAW filter to which the second intermediate frequency signal output from the intermediate frequency amplifier is input; and

    a distributor inserted between the intermediate frequency amplifier and the first and second SAW filters, wherein an input port of the distributor is connected to ground by a reactance element, and a reactance value of the reactance element is switched so as to have a conjugation relationship with a reactance component of the respective input impedance of the first and second SAW filters.

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