Jon Bertrand wrote:
> 
>      <edited>
> 
>      >many engineers have implemented segmented, gapped
>      >and/or narrow width ground plane geometries in
>      >mutli-layer PCB designs.
> 
> 
>      Does this work?  Gaps in the return plane?  I've been too chicken to
>      try this.  I'd guess it could lead to major problems.
> 
> 
>      >The objective of the presentation is to review the
>      >results of recent research and experiments to explore and
>      >develop a better understanding of the inductance, common mode
>      >voltage, and the fundamental mechanisms responsible for
>      >radiated EMI from the PCB introduced by ground plane
>      >geometries.
> 
> 
>      Will there be any paper published on this - how do I get a
>      copy?
> 
> 
>      Thanks,
> 
>      Jon Bertrand
>      [email protected]

I agree Jon.  Currents circulating around gaps in any 
sheet can create a pretty good slot antenna.  

*******************************************************
Doug McKean
[email protected]
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The comments and opinions stated herein are mine alone,
and do not reflect those of my employer.
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