can anybody please give me information about the substrate stack of the HMC834 Eval boar?
How do you take into account the solder mask on the transmission lines?
Thank you very much.
I've attached the stackup for the HMC834 eval board. We use a four layer board with 16 mil microstrip traces. With Arlon 25FR dielectric and 1/2 oz copper we expect around 57 ohms for the transmission lines. Addition of the solder mask reduces this impedance somewhat for a better 50 ohm match.
Hi Dean Young,
thank you very much for your help.
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