FreeLists / si-list / [SI-LIST] "checkered" copper plane question

["Bill Mueller" <williamm@xxxxxxx>]

Hello all,

I've been hitting a couple embedded design shows lately
and have been seeing a couple prototype boards that have
the top and bottom copper planes 'checkered'

That is instead of a large continuous plane, the plane has
been cut into a grid of 1-2mm squares.

Has anyone else seen this?  What are the benifits of this
type of layout?

Thanks,
-Bill


BTW: The guys manning the booth had answers
ranging from 'I don't know' to 'better aestetics' to 'complex
proprietary EMI interfusion grid' :)

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