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What is High Frequency PCBs & The Features & materials
2019-08-09
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Author:IPCB      Share

What is High Frequency PCBs?

Radio-frequency (RF) and microwave (MW) circuits can be found in countless wireless products from handheld devices for medical and industrial applications to advanced communications systems for base stations, radar and global positioning. The success of these high-speed products begins at the product design stage when the PCB laminate materials are selected. Rayming works with the product design team to insure that the project’s cost/performance targets can be met by providing information on material options, relative costs and DfM considerations.


The features of high frequency PCB as following:

 1. DK should be small and stable enough, usually the smaller the better, high DK may lead to signal transmission delay.

2. DF should be small, which mainly affect quality of signal transmission, the smaller DF could make smaller signal wastage accordingly.

3. The thermal expansivity should be the same with copper foil as much as possible, because the difference will lead to copper foil separated in the changes of cold and heat.

4. Water absorptivity must be low, high water absorptivity will affect DK and DF when in the wet environment.

5. Heat resisting property, chemistry resisting, impact endurance, peel off resisting must be good.



Materials:

Rogers, Taconic, Isola, Arlon, SY and etc.