[SI-LIST] Re: Those of you interested in Field Solvers, Stack Ups, Spacing, Crosstalk, Matlab

  • From: "Jon Powell" <jonpowell@xxxxxxxxxxxx>
  • To: <nicklas@xxxxxxxxx>, <cclewell@xxxxxxxxx>
  • Date: Mon, 15 Nov 2004 16:38:51 -0800

I am going to make a statement that I cannot support and would be interested
in
any knowledgeable responses:

I had understood that the W-element model in HSPICE was the best (Hspice)
lossy
coupled Tline model.

regards,
jon


-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Nicklas
Sent: Monday, November 15, 2004 3:11 PM
To: cclewell@xxxxxxxxx
Cc: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Those of you interested in Field Solvers, Stack
Ups, Spacing, Crosstalk, Matlab


Craig,

Thanks for the info. First of all it is the BEM Field Solver Report and
EZStack Module I was referring to. Secondly, the SPICE model generator is
not included with EZStack, however the lossy SPICE models work well if you
know what you are doing and use the appropriate one. I have benchmarked the
lossy ladder and lossy modal models against H-SPICE, and I have found them
to be stabile (e.g. no causality),  faster and they are universally
portable.  You just have to know that in general, ladder models are better
for shorter structures and modal models are good for longer ones such as
cables. (This has to do with the modes of propagation and the controlled
sources derived from the eigen values for the modal models, and the inherent
solve time issue with respect to the ladder models for longer structures).

Nicklas
----- Original Message -----
From: "Craig Clewell" <cclewell@xxxxxxxxx>
To: <nicklas@xxxxxxxxx>
Cc: <si-list@xxxxxxxxxxxxx>
Sent: Monday, November 15, 2004 16:40
Subject: RE: [SI-LIST] Those of you interested in Field Solvers, Stack Ups,
Spacing, Crosstalk, Matlab


> ....be careful of the lossy models that this software generates.
>
> Craig
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
> On Behalf Of degerfors1
> Sent: Monday, November 15, 2004 1:09 PM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Those of you interested in Field Solvers, Stack Ups,
> Spacing, Crosstalk, Matlab
>
>
> There has been much discussion on these topics lately, and I just
> wanted to advise those interested that there is a FREE new BEM
> product with a beautiful interface and extensive report which
> includes Zo,Zeven,Zodd,Zdiff,LRCG, and crosstalk coefficients
> available which can do all of the things being discussed of late in
> this forum. It has been benchmarked against numerous SI tools such
> as Ansoft and comes up strong. You should check it out.
>
> http://www.interactive-products.com
>
> Nicklas
>
>
>
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