Television tuner input circuit having satisfactory selection properties at high band reception

摘要

The present invention provides a television tuner input circuit having satisfactory selection properties free from influence by half of signal frequencies to be received. The television tuner input circuit of the present invention has a tuning circuit and a high pass filter cascaded to the tuning circuit, wherein: the tuning circuit is switched to a low band or high band television signal reception state; when the tuning circuit is switched to a low band reception state, a cutoff frequency of the high pass filter is set lower than the minimum frequency of the low band; and when the tuning circuit is switched to a high band reception state, a cutoff frequency is set lower than the minimum frequency of the high band and higher than half of the maximum frequency thereof.