Re: [SI-LIST] : Matched Length Traces

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From: Michael Nudelman (mnudelman@tellium.com)
Date: Fri Nov 10 2000 - 15:28:14 PST


Boy, oh boy! Did I stir something lengthy :-)))))
Let's talk about something pleasant and easy to understand for a
change....like screwing a lightbulb.

Mike.

Fred Balistreri wrote:

> I didn't know this was turning into a commercial forum. The delay
> of a tightly coupled serpentine will not be reliably predicted by
> use of 2d field solvers and then simulation thereof. This is true
> of anybodys 2d field solver no matter how accurate the algorithm
> may be for transmission lines or coupled transmission lines. There
> are non-TEM effects that occur that cause the delay to be less than
> the predicted. Its not just a matter of crosstalk. Anybody that has
> measured this in the lab has experienced this. Its not a question
> of tools but rather the method(s) being used. Full wave analysis
> and lab measurments confirm this.
>
> Sorry Lynne its not just an HL problem but rather all tools that
> rely on 2d field analysis.
>
> Lynne Green wrote:
> >
> > HyperLynx Crosstalk includes serpentine self-coupling in the
> > field solver (both pre-layout and post-layout analysis), so it
> > correctly predicts both delay and crosstalk to other nets.
> >
> > Rather than give more detail here, I invite those interested to
> > check out the demo at http://www.hyperlynx.com.
> >
> > - Lynne Green
> >
> > Dr. Lynne Green
> > Technical Marketing Engineer
> > Innoveda, Inc.
> > 14715 NE 95th St, Suite 200
> > Redmond, WA 98052
> > 425-497-5081
> > FAX 425-881-1008
> > lgreen@innoveda.com
> > http://www/innoveda.com
> > http://www/hyperlynx.com
> >
> > **** To unsubscribe from si-list or si-list-digest: send e-mail to
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>
> --
> Fred Balistreri
> fred@apsimtech.com
>
> http://www.apsimtech.com
>
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