The popularity of 5G networks has brought about tremendous changes in the communications industry, and high-frequency communication PCBs play a vital role in this change. Due to their outstanding high performance and high frequency characteristics, high-frequency communication PCBs can meet the strict requirements of 5G networks for high-speed data transmission and low latency. First of all, from the technical characteristics, high-frequency communication PCB board has a lower dielectric constant and a lower dielectric loss factor, which enables it to effectively increase signal transmission speed and reduce signal distortion. At the same time, its high heat resistance and stability ensure that it can maintain reliable performance in high-frequency working environments. Secondly, in terms of market demand, with the rapid increase in the number of 5G base stations and terminal equipment, the market demand for high-frequency communication PCB boards has risen sharply. According to the latest data, the global market size of 5G equipment is expected to reach billions of dollars in the next few years, which undoubtedly brings huge business opportunities for high-frequency communication PCB board manufacturers. In terms of application prospects, high-frequency communication PCB boards are not only widely used in 5G base stations, but also play an important role in 5G smartphones, routers and other communication devices. With the continuous advancement of technology and the continuous expansion of application scenarios, the scope of use of high-frequency communication PCB boards will be further expanded. So, how to choose a suitable high-frequency communication PCB board? When choosing, factors such as the dielectric constant, dielectric loss factor, thermal expansion coefficient, and maturity of the manufacturing process should be considered. Only in this way can the best performance and reliability of communication equipment in actual use be ensured. In short, the application of high-frequency communication PCB boards in 5G networks not only promotes the development and popularization of 5G technology, but also meets the market's growing demand for high-performance communication equipment. Therefore, it is very important for practitioners in related industries and technology enthusiasts to have a deep understanding of the characteristics and selection methods of such PCB boards.