Communication gateway intended to connect an LPWAN network and a cellular network

A communications gateway (2) for communicatively connecting at least one low-power wide area network (LPWAN) network and at least one cellular network, the gateway comprising:

• a first RF chain (10) for communicating with said at least one LPWAN network, the first RF chain comprising a LPWAN antenna (100), a transponder (30) with a transmitter (31) and a receiver (32) and, installed in series between the transponder and the LPWAN antenna (100):
• at least one filtering block (170), comprising:
• an amplification block (160) comprising an uplink channel and a downlink channel configured in parallel, and
• a part common to the uplink channel and to the downlink channel, the common part comprising a bandpass filter (80) passing the frequencies in a band of frequencies of said at least one LPWAN network, attenuating the power of the frequencies outside of the band of said LPWAN network, the part positioned going toward the LPWAN antenna (100) and a first high-pass filter (90);
• and
• a second RF chain (20) toward said cellular network, the second RF chain for establishing an uplink and downlink connection with the cellular network, a frequency band of the downlink and a frequency band of the uplink of the cellular network being outside of the band of said LPWAN network, the second RF chain comprising a cellular antenna (150), a modem (120) and, installed in series between the modem and the antenna:
• at least one rejection filter (130) attenuating the power of the frequencies within the frequency band of said at least one LPWAN network and passing the frequencies within the frequency band of the downlink and the frequency band of the uplink of the cellular network.