FIELD: physics.
SUBSTANCE: invention relates to a gateway for communication between networks for connecting an LPWAN network to a network for accessing a cellular network or a RAN network, an LPWAN network and a RAN network using radio links. Such a gateway usually allows connected objects and servers on the Internet to interact in accordance with the architecture of the Internet of things (IoT). However, proximity of frequency bands used for two radio channels can lead to mutual interference between them, wherein the transmitter of one will cause interference to the receiver of the other, especially when the gateway is miniature, of the order of approximately 10 cm. Present invention proposes a solution for electromagnetic isolation of two radio-frequency channels by means of double filtration: using a band filter on radio frequency LPWAN channel in combination with a notch filter on a cellular radio-frequency channel.
EFFECT: preventing deterioration of signal-to-noise ratio at receivers of radio-frequency circuits.
16 cl, 7 dwg
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