Doesn't sound as a microwave board, but rather like a mixed signal MHz  FR4 
one. In that case, you will not likely get discontinuities and signal 
deformations (rise, fall,delay etc). You probably got a correct advice. If 
you have a faster signal board, one can not give advice other than seeing 
the trace layout. TN got many experienced uwave gurus.
By the way, I use the below thumb rule chart. It's not much of a help for a 
true microwave design engineer, but very good for us with only part of nose 
in the waveguide world..

http://www.microwaves101.com/encyclopedia/rulesofthumb.cfm

Inge

----- Original Message ----- 
From: "David Baldwin" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, November 24, 2008 6:35 AM
Subject: [TN] Stripline Traces and Plane Splits


> Fellow Designers:
>
> I am designing a board with differential pairing in a stripline 
> configuration.  One the bottom side is a solid ground plane.  On the top 
> side is a split power plane.
>
> I was told that running traces across the splits is not a significant 
> problem as there is a solid ground plane on the other side for the return 
> currents to flow.
>
> Do you agree with this assessment and what has your personal experience 
> told you.
>
> Thanks in advance for your opinions and response.
>
> David Baldwin CID+
>
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