Hi Doug,
Yes, there is proximity as well as skin effects on the planes - the area where
signal power flow is shrinking with the frequency and current flowing in
thinner and thinner surface layer (result of absorption by the metal). And all
signal power is in dielectric and air! :)
See illustrations for microstrips at
https://www.simberian.com/ScreenCasts.php?id=38 and in some other demo-videos ;
at https://www.simberian.com/ScreenCasts.php?view=table or at Simbeor channel ;
at https://www.youtube.com/user/simbeor/videos ;
Best regards,
Yuriy
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Doug Brooks
Sent: Friday, December 6, 2019 10:32 AM
To: SI
Subject: [SI-LIST] Skin effect on ground plane?
We all know what the skin effect is on a trace. And we all know the
return signal path is on the plane directly under the trace.
The question is, is there a corresponding skin effect on the ground plane?
Doug Brooks
--
*************************************************************
See Doug's latest books, available on Amazon. "PCB Trace and
Via Currents and temperatures; The Complete Analysis,
2nd Edition." and "PCB Trace Current/Temperature Curves,
0.25 Oz. to 5.0 Oz., The Complete Set."
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