[SI-LIST] Re: Does power/ground pair edege radiation noise really matter in the EMI test?
- From: Young <long.0.yang@xxxxxxxxx>
- To: liuluping 41830 <liuluping@xxxxxxxxxx>
- Date: Fri, 24 Dec 2010 09:24:28 +0800
If people have experience of designing microstrip antenna,
microstrip antenna radiates energy from the edge,
to the maximum when half wavelength (edge electric fields do not cancel but
enhance each other).
PCB is consistent with this description.
On Thu, Dec 23, 2010 at 18:53, liuluping 41830 <liuluping@xxxxxxxxxx> wrote:
> Dear all:
>
> The PDN noise voltages at the edges of a PCB are potential
> electromagnetic interference sources,the noise may be produced by SSN or
> cavity resonance. Many paper ,such as EBG technology,based on this
> suppose,but does this noise really matter in a typical digital board which
> include many high speed memory and serdes ?Does any test analysis that the
> plane edge noise account for how many percent in the total radiation noise
> ?
>
> Thanks and regards,
>
> LIU Luping
>
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