NARROW-BAND LC-FILTER Russian patent published in 2014 - IPC H03H7/09 H03H9/46 

FIELD: physics, radio.

SUBSTANCE: proposed device relates to radio electronics and may be used in various devices of selection and processing of signals used in communications equipment. A narrow-band LC-filter comprises the first capacitor, the first inductance coil, to the second output of which the second capacitor is connected, the second output of which is the output of the filter and is connected to the third capacitor, the second outputs of the first and third capacitors are connected to a common bus, at the same time to the first output of the first capacitor there is the fourth capacitor connected, the second output of which is connected to the fifth capacitor and the second inductance coil, at the same time the second output of the fifth capacitor is connected to the first output of the third capacitor, the second output of the second inductance coil is connected to the common bus.

EFFECT: increased steepness of AFC filter slopes.

2 cl, 5 dwg