Wow, only 13 dB. was that broadband, or what freq?
Try the same model with unbalanced drive [one wire is
ground], that *has* to put some signals on a floating
shield.
- Robert -
On Mon, 19 Sep 2005 10:05:06 -0600
[email protected] wrote:
> For what it's worth I ran a NEC-2 model of a
> differential
> transmission line under these conditions:
>
> 1) free space
> 2) covered with a mesh shield open at each end
> 3) covered with a mesh shield closed at each end
>
> The radiation under condition 2 is the same as condition
> 3. The
> radiation in condition 2 and condition 3 is 13dB below
> condition 1.
>
> >From this I infer that closing the ends makes no
> difference, as several
> here have stated. I can improve the model in various ways
> but I will
> wait for more input from all of you.
>
> NEC-2 Model:
>
> 7.0" differential line spaced 0.1"
> 7.5" mesh shield
>
> Mesh shield:
> Six sides
> 0.5" diameter
> 0.5" distance between "rings"
>
>
> Dave Cuthbert
> Micron Technology
>
> -
> 2005 IEEE Symposium on Product Safety Engineering
> 3-4 October Schaumburg, IL
> http://www.ieee-pses.org/symposium
>
-
2005 IEEE Symposium on Product Safety Engineering
3-4 October Schaumburg, IL
http://www.ieee-pses.org/symposium
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