Research on Transmission Performance of Multi-band SG-LongRange Communication Technology

The application scenarios are diversified and the working frequency band is different in the terminal wireless local area network (WLAN). In order to achieve the integration of terminal network with multiple modes and different frequency points and meet the needs of diversification of the Internet of things services, this paper presents a SG-LongRange (State Grid Long Range) wireless communication technology supporting multiple working frequencies, combining a compact printed antenna operated concurrently at three distinct frequencies of sub-GHz. By simulating, the coverage of SG-LongRange wireless communication technology can achieve certain receiving sensitivity in the short-range power Internet of things entrance. The proposed SG-LongRange communication technology supporting multiple frequencies provides a strong support for solving the Internet of things entrance bottleneck between wide area network and users, ecological construction and continuous evolution of Internet of things.