RE: [SI-LIST] : Regarding plane splits

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From: Ingraham, Andrew (Andrew.Ingraham@compaq.com)
Date: Wed Dec 06 2000 - 05:07:15 PST


> If the frequency harmonics are too high for the 2 or 3 mil coupled
> ground/power planes to provide good enough AC coupling even with filler on
> other layers, where do you go from there? Does anyone know.
 
Did you mean to say "If the frequency harmonics are too low ..."?

If the frequencies are too high for even the board's intrinsic capacitance
(which is your highest frequency regime of bypassing), then you are well
into 2nd and 3rd order effects and a lot of black magic may be called for.

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