Diplexer for television tuning systems

Details Diplexer for television tuning systems Diplexer for television tuning systems

H - Electricity

03

J

365/20

H03J 5/24 (2006.01) H03H 7/46 (2006.01)

Patent

CA 1183622

Abstract Of The Disclosure A diplexer comprises a first frequency selective filter coupled between its first input terminal and a circuit point, a second frequency selective filter coupled between the circuit point and its output terminal, and third frequency selective filter coupled between its second input terminal and the circuit point. The first filter selects frequencies higher than a first frequency and the second filter selects frequencies lower than a second frequency which is higher than the first frequency. The third filter selects frequencies lower than a third frequency which is lower than the first frequency. In a television receiver, the first and second filters serve as a bandpass filter for the UHF band, and the third filter passes the VHF and CATV bands.

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