Fecha de publicación: 14/01/2022 Fuente: Wipo "IOT" The invention relates to a communication module. The communication module comprises a WIFI radio frequency module, a WIFI impedance matching module, an NB-IOT radio frequency module, an NB-IOT impedance matching module, a dual-frequency duplexer and an antenna, one end of the dual-frequency duplexer is connected with the antenna, and the other end of the dual-frequency duplexer is connected with the WIFI impedance matching module and the NB-IOT impedance matching module; the WIFI radio frequency module is connected with the WIFI impedance matching module, and the NB-IOT radio frequency module is connected with the NB-IOT impedance matching module; when the dual-frequency duplexer receives a radio frequency signal from the antenna, the dual-frequency duplexer is configured to identify whether the radio frequency signal is a WIFI signal or an NB-IOT signal according to a frequency spectrum difference; and the WIFI impedance matching module and the NB-IOT impedance matching module are configured to realize impedance matching of the radio frequency signal. According to the NB IOT and WIFI signal combination provided by the invention, a near-distance wireless WIFI signal and a long-distance wireless NB IOT signal are mixed and then are combined into one radio frequency signal from two paths, and the NB IOT and WIFI signal combination can be applied to a wireless controller with WIFI near-distance communication. By combining the two paths of signals, the radio-frequency signal can be radiated through one antenna, so that the system application which is simple, low in cost and low in installation complexity is completed.