Patent ID: 7440736

Claim:
An intermediate frequency circuit for a television tuner, comprising: an intermediate frequency tuning circuit, which has a coil and a capacitor connected parallel to each other and resonates parallel to an intermediate frequency signal; an N−1 channel trap circuit connected to an output of the intermediate frequency tuning circuit and having a coil and a capacitor connected parallel to each other, for removing voice signal components of lower neighboring channels; an intermediate frequency amplifier connected to an output of the N−1 channel trap circuit, for amplifying the intermediate frequency signal; and an intermediate frequency signal resonance circuit, which is connected to an output of the intermediate frequency amplifier and has a coil and a capacitor connected in series, all components being formed on a circuit board, wherein a coupling state of components connected between the input and output of the intermediate frequency amplifier on the circuit board is selected, and a picture portion in a frequency characteristic of the intermediate frequency circuit is set to a peak.