No. We found the same issue when we investigated the Fiberweave effect ("Fiber
Weave Effect: Practical Impact Analysis and Mitigation Strategies", 2007). We
had several identical boards made and the measured skew varied significantly.
Investigation showed the glass bundles wandering significantly.
But, many are using "spread glass" and similar techniques to mitigate the
effect.
Jeff Loyer
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Boris Bakshan
Sent: Friday, March 17, 2017 4:23 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Glass Weave Skew
Hi experts,
Following Eric's paper on designcon and the conclusions regarding the inherent
misalignment of the glass bundles with respect to the edge of the board, could
it be that some of the laminate manufacturers took initiative to help
mitigating the skew problem caused by the way fabrics are built for so many
years?
(
https://www.signalintegrityjournal.com/ext/resources/article-images-2017/4103/4103_SIJ_GlassWeave.pdf
)
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