N-CHANNEL ELECTRIC FREQUENCY-SELECTIVE DEVICE Russian patent published in 2018 - IPC H04B1/18 

FIELD: radio equipment and communications.

SUBSTANCE: invention relates to the radio communication, and can be used in the decameter wave band radio receivers. N-channel electrical frequency selective device comprises H sub-bands, each of which contains the input broadband filter, to which output the corresponding differential amplifier (DA) is connected, to each of which outputs M/2 narrow-band filters are connected, wherein filters with odd numbers are connected to DA one output, and filters with even numbers are to DA another output. Each of filters is the combined filter consisting of the k and m type links, wherein the characteristic steepness increases both due to the use of the m type links, and due to the k type half-links connection at the m type links inputs and outputs.

EFFECT: increase in the amplitude-frequency characteristic slope in the channel frequency-selective device each N channel transition regions.

1 cl, 3 dwg