PCB Manufacturer commonly used Materials are: rogers(Rogers 4350B HF.Rogers RO3001.Rogers RO3003).Taconic(RF-35 Ceramic.TLX). Special materials are used to attain the high frequency given by the High Frequency PCB. High frequency PCB have their own unique plates. High Frequency PCB Manufacturing High Frequency Circuit Board Materials High frequency signals are vulnerable to noise and come with much tighter impedance tolerance as compared to conventional circuit boards. In addition, the heat resistance, chemical resistance, impact strength, peeling strength and other requirements are also good.
The absorbency of high frequency circuit board is lower than that of other multi-layer circuit boards, because humidity will affect the dielectric constant and dielectric loss of high frequency circuit board.
The later use will affect the signal transmission of PCB. The inconsistency can easily lead to the separation of copper foil in the alternate change of heat and cold. The thermal expansion coefficients of high frequency circuit boards and copper foil are also correlated to a certain extent. Conversely, if the dielectric constant is high, the signal transmission process is slow. Medium loss is very small, it is not easy to absorb water and moisture, heat resistance, corrosion resistance and other excellent performance. In theory, the smaller the dielectric constant, the more stable the signal, and the higher the frequency circuit board can play a better role in signal transmission. Generally speaking, high frequency circuit boards have their own characteristics: low dielectric constant, relatively stable.