RE: [SI-LIST] : Matched Length Traces

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From: Ken Cantrell (Ken.Cantrell@srccomp.com)
Date: Fri Nov 10 2000 - 14:23:20 PST


Fred, Lynn, and Keith,
It just seems to erupt every once in a while. I think Tony has the picture
now. The user base appreciates keeping this a technical forum.
Thanks again,
Ken

-----Original Message-----
From: owner-si-list@silab.eng.sun.com
[mailto:owner-si-list@silab.eng.sun.com]On Behalf Of Fred Balistreri
Sent: Friday, November 10, 2000 2:10 PM
To: Lynne Green
Cc: si-list@silab.eng.sun.com
Subject: Re: [SI-LIST] : Matched Length Traces

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
>
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--
Fred Balistreri
fred@apsimtech.com

http://www.apsimtech.com

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