Television signal input filter

Details Television signal input filter Television signal input filter

H - Electricity

04

N

350/56

H04N 5/44 (2006.01) H03H 5/02 (2006.01) H03H 7/01 (2006.01)

Patent

CA 1240791

Abstract An input filter for coupling television signals from a signal source such as an antenna to an RF signal processing stage includes series resonant input and output sections shunting the signal path. The input section forms a trap at the video IF frequency. The output section resonates at a frequency other than the sound IF frequency, below the band of television signal frequencies to be processed by the RF signal processing stage. The filter serves to attenuate unwanted stray signals such as video and sound IF components otherwise capable of interfering with and distorting the input television signals.

501785

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