UNIVERSAL BAND-PASS AND REJECTION FILTER WITH CONTROLLED BANDWIDTH Russian patent published in 2020 - IPC H03H11/00 

FIELD: radio equipment.

SUBSTANCE: invention relates to radio engineering and can be used as an interface for selecting a given spectrum of a signal source, for example, during its further processing by analogue-to-digital converters of various modifications. Besides, the disclosed device has the possibility of adjusting the pass band and has an extended frequency range. For this purpose, a universal active RC-filter is provided, which provides implementation at its outputs of a band-pass filter, a low-pass filter and a rejection filter, with adjustable band-pass, comprising device input (1), device first output (2), which realizes function of output of low-pass filter, second output (3) of device, which realizes function of output of band-pass filter, third output (4) of device, which realizes output of cut-off filter.

EFFECT: technical result is the creation of a universal filter circuit, which provides implementation of band-pass and rejection filters on its outputs with possibility of adjusting the pass band.

1 cl, 4 dwg