[SI-LIST] Re: Conductor loss reduction at High Frequency

Tom, for geometries in typical use this does not seem to be a 
significant contributor to EMI.  Where it might start to become an issue 
is if we were to do something foolish like run a big fat trace over 
thick dielectric close to and parallel to a board edge.  That would make 
a nice antenna that both emits noise and welcomes ESD with open arms.

Regards,


Steve.
Tom Biggs wrote:
> From: steve weir
> " EMI issues from microstrip are often greatly overstated.  The big
> offenders on a PCB are:  the cavity edges, and the components radiating
> above the PCB surface. Doug Smith has some good information on these
> types of subjects.  Lee is passionate about his practical experience
> with M/S and no significant EMI issues."
>
> I was thinking more about the effect of making the surface trace wider
> (for lower loss) and further away from the ground plane. I assume that
> this increases EMI even though the impedence isn't changing.
>
>     -tom
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