[SI-LIST] Resedn:Mitigating PCB fiber weave effect
- From: Tesla <emcesd@xxxxxxx>
- To: si-list@xxxxxxxxxxxxx, "Scott McMorrow" <scott@xxxxxxxxxxxxx>
- Date: Fri, 26 Oct 2012 13:02:20 +0800 (CST)
Hi,
Today read two two Designcon paper about PCB fiber weave effect
1 The Impact of PCB Laminate Weave on the Electrical Performance of
Differential Signaling at Multi-Gigabit Data Rates
Scott McMorrow
2 Fiber Weave Effect: Practical Impact Analysis and Mitigation Strategies
Jeff Loyer
For the method mitigating skew by fiber weave effect. Scott suggest that
use-Panel construction at 45 degrees to the weave.
Jeff suggest that A rotation of 13 drgree is very effective at alleviating the
problem and A 45 degree rotation is not as effective.
For the two methods, which is better? Does the rotation method to reduce fiber
weave effect applied to all kinds of fiber weave(106,1080, 2113 and so on) or
different dense fiber weave may need different degrees rotation?
Thanks.
Tesla
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