[SI-LIST] : Accuracy of HSPICE W-element transmission lines

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From: Kai Keskinen ([email protected])
Date: Thu Nov 23 2000 - 10:19:12 PST

Hello SI-People:

We have now several times encountered differences in results from other
modelling packages and results from HSPICE w-element models for applications
involving fairly long striplines > 30cm on FR4 and GETEK with 2.5Gbps
signals with ~100ps edge rates. The W-element model appears to give lower
loss than the other techniques. Typical track widths are 6-8 mils with
100Ohm loosely coupled differential pairs.

Avant! claims the W-element method is accurate without providing a paper
showing how it was validated.

How does the rest of the SI community feel about the accuracy of the
W-element model?

Thanks in advance,

Kai Keskinen
Equipment and Network Interconnect
Nortel Subsystems and Performance Networks (NSPaN)
(613)-765-3506 (ESN 395)
[email protected]

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