Filter switching arrangement for a tuner

Details Filter switching arrangement for a tuner Filter switching arrangement for a tuner

H - Electricity

03

J

365/12

H03J 5/24 (2006.01)

Patent

CA 1309197

Abstract In a tunable filter including first and second inductors, a varactor diode, and a bandswitching diode connected intermediate the inductors to select the inductor configuration for first and second tuning bands, a capacitor is connected in parallel wilth the bandswitching diode. When the bandswitching diode is in the high impedance "non-conducting" state, the capacitor is functionally connected with other elements of the tunable filter for purposes such as trapping or tracking. When the bandswitching diode is in the low impedance "non-conducting" state, the capacitor is functionally disconnected from the tunable circuit.

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