[SI-LIST] Re: PCB Gnd discontinuity on simulation software
- From: Scott McMorrow <scott@xxxxxxxxxxxxx>
- To: gpfitzgerald2000@xxxxxxxxx
- Date: Wed, 7 Mar 2012 18:03:48 -0500
Greg
I'm not sure why you're posting this. Since you've not provided any
meaningful information, I'd have to assume that you are
advertising/marketing yourself, or this EM solver that cannot be mentioned
by name. If you are going to advertise/market in this way, please at least
have the decency to provide some information that could further the
discussion and might be helpful to designers.
Scott
--
Scott McMorrow
Teraspeed Consulting Group LLC
121 North River Drive
Narragansett, RI 02882
(401) 284-1827 Business
(401) 284-1840 Fax
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Teraspeed® is the registered service mark of
Teraspeed Consulting Group LLC
On Wed, Mar 7, 2012 at 5:34 PM, Gregory Fitzgerald <
gpfitzgerald2000@xxxxxxxxx> wrote:
> Ettore:
>
> As a consultant, I have worked with some clients that had access to new
> FAST 2.5D solvers that accurately account for the situation mentioned below
> (signals crossing over split planes). Unfortunately, this work was under
> an NDA so I cannot provide more information. What I can state is that the
> products are from a ~3 year old new start up that is working with a few,
> large teaching customers before they roll out a product to the mass market.
>
> Product was a little immature but was quickly maturing into a full SI/PI
> platform. It is different and better approach to current products on the
> market.
>
> Greg
> --- On Fri, 2/24/12, steve weir <weirsi@xxxxxxxxxx> wrote:
>
>
> From: steve weir <weirsi@xxxxxxxxxx>
> Subject: [SI-LIST] Re: PCB Gnd discontinuity on simulation software
> To: si-list@xxxxxxxxxxxxx
> Date: Friday, February 24, 2012, 7:30 AM
>
>
> Ettore, your picture did not come through as the SI-list does not
> support attachments.
>
> I do not believe that present versions of Hyperlynx account for signals
> crossing plane splits. If I am wrong, I am sure the Mentor guys will
> chime in. In order to evaluate those kinds of effects accurately, a
> full-wave solver is the best way to go. However, I will tell you right
> now that you don't need a full wave tool to accurately predict that you
> are setting yourself up for EMI headaches by introducing such a
> discontinuity. You should really do what you can to maintain a
> contiguous transmission path.
>
> Steve.
> On 2/24/2012 2:29 AM, ruscino wrote:
> > Content-Type: text/plain; charset=ISO-8859-15; format=flowed
> > Content-Transfer-Encoding: 7bit
> > Hi all, in my circuit there are lvds nets that are on gnd shape
> > (microstrip topology).
> > These nets crossing also a circuit area where there is not the gnd shape.
> > When I simulate this circuit on simulation software like Hyperlynx
> > take the software into account this gnd discontinuity?
> > See the picture in attach, please.
> >
> > Thanks a lot
> > Ettore
> >
> >
> >
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>
> --
> Steve Weir
> IPBLOX, LLC
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