mostly used as a substrate material in (PCB) Printed Circuit Board very hard to recycling
Highlights
𝗠𝘆𝘁𝗵 𝘃𝘀. 𝗥𝗲𝗮𝗹𝗶𝘁𝘆 𝗶𝗻 𝗔𝗻𝘁𝗲𝗻𝗻𝗮 𝗗𝗲𝘀𝗶𝗴𝗻. 𝗣𝗮𝗿𝘁 3 Myth: FR4 is good enough for all RF projects High Speed Signals
Reality: FR4 suffers from significant dielectric loss at higher frequencies. Combined with inconsistent dielectric constant, it becomes virtually unusable for applications above 1 GHz.1
Footnotes
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https://www.linkedin.com/posts/katerinagalitskaya_%F0%9D%97%A0%F0%9D%98%86%F0%9D%98%81%F0%9D%97%B5-%F0%9D%98%83%F0%9D%98%80-%F0%9D%97%A5%F0%9D%97%B2%F0%9D%97%AE%F0%9D%97%B9%F0%9D%97%B6%F0%9D%98%81%F0%9D%98%86-%F0%9D%97%B6%F0%9D%97%BB-%F0%9D%97%94%F0%9D%97%BB%F0%9D%98%81-activity-7369640441694072833-9eox?utm_source=share&utm_medium=member_desktop&rcm=ACoAAAgUM5wB4VFVmYwZ0FZJHyx9H9vs8revv5M ↩