High-frequency PCB board refers to a printed circuit board above 1GHz. This definition may be different in the industry. Its physical performance, accuracy, and technical parameters are very high. They are often used in the fields of communication systems, car ADAS systems, satellite communication systems, and radio systems.

The characteristics of high-frequency PCB

High-frequency PCB is a circuit board for high -frequency signal transmission. It has the following characteristics:

1. Low loss: High-frequency PCB uses better materials and special process design, which can reduce the loss of signals during transmission and maintain lower signal attenuation.

2. Low noise: Special design and shielding technology adopted by high-frequency PCB can reduce the generation and dissemination of noise, and provide clean signal output.

3. Good impedance matching: High -frequency PCB can achieve effective impedance matching with other high-frequency devices through accurate design and debugging to improve the efficiency of signal transmission.

4. Strong anti-interference ability: High-frequency PCB has good anti-interference ability, can work normally in a complex electromagnetic environment, and reduce the impact of external interference on signals.

5. The dielectric constant is small and stable: Generally speaking, the smaller the dielectric constant, the better because the square root of the signal transmission rate is the opposite of the square root of the material of the material. At the same time, the medium consumption requirements are small because this will mainly affect the quality of signal transmission.

6. Thermal expansion coefficient is consistent with copper foil: If the thermal expansion coefficient is not synchronized, it will cause copper foil to be separated during hot and cold.

7. Excellent heat resistance, chemical resistance, impact strength and separation strength: These characteristics ensure the stability and reliability of high-frequency PCB in harsh environments.