FIELD: radio engineering and communication.
SUBSTANCE: invention relates to radio communication and can be used in radio receivers of the decameter wave band. Invention comprises a series circuit formed by inductor and a variable capacitor, performing the role of tunable rejection circuit for suppressing narrow-band noise; multi-link bandpass filter has two attenuation poles located lower and higher than passband, which leads to an increase in slope of amplitude-frequency characteristic in transition regions. Device can be configured as with a gap between adjacent passbands, and with adjacent bands.
EFFECT: technical result consists in increasing steepness of amplitude-frequency characteristic in transition regions.
1 cl, 3 dwg
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