What kind of PCB board is called high frequency board?
The density is greater than the low frequency board. General high-frequency board are used in the frequency of more than 1G circuit
High frequency board is usually pressed with FR4 glass fiberboard, and is the whole of the epoxy glass cloth to suppress the color of the whole board is relatively uniform, bright.
Its dielectric constant is the key, must be very small and very stable, the dielectric loss is very small, not easy to moisture moisture, heat, corrosion resistance and other excellent performance.
