TUNABLE BAND FILTER Russian patent published in 2010 - IPC H03H7/12 

FIELD: radio engineering.

SUBSTANCE: tunable band filter comprises N+1 inductances, which are connected serially, according capacitance and inductance, the second outputs of which are connected to common bus, to each of neighbouring inductances connection points. This chain creates band filter, which consists of N cascade connected links, input of specified band filter via the first inductance is connected to input potential terminal of device, output of this band filter is connected via the second inductance to outlet potential terminal of device, points of connection of neighbouring inductances, which are included into longitudinal branches of specified N link band filter, and also points for connection of the first and second inductances with this band filter produce N+2 intermediate outputs of device and are connected accordingly to N+2 inputs of commutator additionally introduced in device, M outputs of which are connected to capacitance box, comprising M capacitors, the first outputs of which are connected to M outputs of commutator, and the second outputs are connected to common bus.

EFFECT: expansion of functional resources.

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