Re: [SI-LIST] : Plane Splits Inspection

About this list Date view Thread view Subject view Author view

From: Chris Padilla ([email protected])
Date: Thu Nov 09 2000 - 06:43:38 PST

I do not agree that interplane capacitance = discrete capacitance in as far
as the bandwitch in which the capcitors functions LIKE A
CAPACITOR. Mounting inductance always limits this in the discrete case so
the solid plane should work at much higher frequencies than the stitching caps.


>Would you agree that your nearby solid plane is basically a large,
>distributed capacitor, performing essentially the same function
>as Abe's stitched capacitors? Admittedly a return current at split
>plane A must pass through the dielectric to the solid plane, across
>a little bit of solid plane, and then back through the dielectric
>to split plane B. But it does form a capacitive coupling that is
>available everywhere; therefore no need to calculate capacitor
>placement. I have not considered capacitance magnitude differences,
>A separate discussion could be held on what happens to the currents
>induced in the solid plane.
>Mike LaBonte

**** To unsubscribe from si-list or si-list-digest: send e-mail to
[email protected] In the BODY of message put: UNSUBSCRIBE
si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP.
si-list archives are accessible at

About this list Date view Thread view Subject view Author view

This archive was generated by hypermail 2b29 : Tue May 08 2001 - 14:30:01 PDT