What is a high-speed and high-frequency PCB board

    What is a high-speed and high-frequency PCB board？

Generally speaking, high-speed and high-frequency PCB boards refer to printed circuit boards with frequencies above 1GHz. This definition may vary in the industry. Its physical properties, accuracy, and technical parameters are very demanding, and it is often used in communication systems, automotive ADAS systems, satellite communication systems, radio systems and other fields.

    In addition, in addition to the radio frequency system, a device also has digital processing and interface parts. Driven by consumer demands for faster Internet connections, mobile high-definition video and the Internet of Things, high-speed and high-frequency PCB boards must also support the demand for high-speed digital data transmission. Commercial applications such as IoT, 5G and big data centers, as well as more and more personal applications, continue to refresh the speed requirements for digital communication systems.

   The production process of high-speed and high-frequency PCB boards is basically the same as that of ordinary PCB boards. The key point to achieve high-frequency and high-speed lies in the properties of the raw materials, that is, the characteristic parameters of the raw materials. The main material of high-speed and high-frequency PCB boards is high-frequency and high-speed copper-clad laminates, and its core requirements are low dielectric constant (Dk) and low dielectric loss factor (Df). In addition to ensuring lower Dk and Df, the consistency of Dk parameters is also one of the important factors to measure the quality of high-speed and high-frequency PCB boards. In addition, another important parameter is the impedance characteristics of the PCB board and other physical characteristics.