| 摘要 |
PROBLEM TO BE SOLVED: To transmit a digital television signal with a flat transmission characteristic without increasing the Q of a tuning circuit and to prevent a pulling of a local oscillation frequency from being caused by increasing the attenuation of a local oscillating frequency band. SOLUTION: The digital television tuner is provided with an antenna input terminal 1, a mixer 15 that frequency-converts a digital television signal received by the antenna input terminal 1 and a local oscillator 16 that gives a local oscillation signal to the mixer 15. Then a 1st attenuation means 14 having an attenuation pole in the vicinity of a frequency of a local oscillation signal is provided between the antenna input terminal 1 and the mixer 15.
|
