| 摘要 |
Provided is an intermediate frequency circuit (13) connected to a rear stage of a mixing circuit (31, 32) of a television tuner (10), the intermediate frequency circuit (13) including a first inductor (L10) having one end connected to the mixing circuit (31, 32), an intermediate frequency tuning circuit (51) connected between the other end of the first inductor (L10) and a ground, and a trap circuit (52) for lower adjacent channel attenuation, being connected between the other end of the first inductor (L10) and an output terminal. A first capacitor (C14) is connected between the one end of the first inductor and the output terminal, the trap circuit (52) for lower adjacent channel attenuation has an inductive impedance in a frequency lower than a trap resonance frequency, and a capacitive impedance in a frequency higher than the trap resonance frequency. |
