Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
sir i have already gone through that site , i didn't got complete idea about fr4 substrate, just i want to know which material does comes under this group
What do you mean? FR4 is that glassfiber-expoxy material used in standard PCB. This is different from the expensive microwave substrates.
Depending on the manufacturer, the dielectric properties of FR4 can vary. Reported values are somewhere between epsr=4.2 ... 4.9 and the data that I measured for my supplier was 4.7 with tand=0.027. It is difficult to use this material for RF circuits because the dielectric properties are not well controlled. Also, the dielectric loss is higher than typical microwave substrates.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
