antenna on fr4 substrate - what metal is for fr4 substrate?

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praveen kokkirala

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regarding substarte

am designing an antenna on fr4 substrate.....can anyone tell what metal is fr4 substrate....
 

regarding substarte

FR4 is not a metal.
FR4 is the name of the most common PCB (Printed Circuit Board) laminate.

A flat foil made by glass-epoxy resin is surrounded by two thinner copper metal foils.
 

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