In order to make electronic communication technology have a higher speed development. High-quality high-speed transmission, many of today's communication equipment have begun to use high-frequency multi-layer PCB. The material of multi-layer high-frequency circuit boards has excellent electrical functions and good chemical stability.
Four Major Points of FR4+High Frequency PCB:
1. It has the characteristics of small signal transmission loss, short transmission delay time and small signal transmission distortion.
2. Has excellent dielectric properties (mainly: low relative dielectric constant Dk, low dielectric loss factor Df). Moreover, the dielectric characteristics (Dk, Df) of the multilayer circuit board can maintain its stability under the environmental changes of frequency, humidity and temperature.
3. High precision control with characteristic impedance (Zo).
4. Excellent heat resistance (Tg), processability and adaptability.