The Polar tool is very good at this.
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Alfred P. Neves
Sent: Friday, April 7, 2017 5:09 PM
To: rdawson16@xxxxxxxxxxx
Cc: si-list <si-list@xxxxxxxxxxxxx>
Subject: [SI-LIST] Re: flex crosshatch reference plane and LVDS differental
pairs
Actually, the new Polar tools are pretty good at estimating impedance over
frequency, some of the most popular EDA tools that you may have been using
are horrid, however. The data was taken using our Channel Modeling
platforms and speaks to the necessity of careful benchmarking even an EDA
package that costs upwards of $100K.
As Ryan stated, we are also using Simbeor due its cost/performance and
accurate loss modeling.
- Al
Products for the Signal Integrity Practitioner
Alfred P. Neves
Chief Technologist
Office: 503-679-2429
www.wildrivertech.com <http://www.wildrivertech.com/>
2015 Best In Design&Test Finalist
On Apr 7, 2017, at 4:26 PM, Randy Dawson <rdawson16@xxxxxxxxxxx> wrote:from a few engineers that impedance calculators (Polar) are not so accurate.
I am looking for SI articles on this and not finding much. I have heard
what I find.
I do have the Sigrity field solver and will experiment and let you know
What are you're experiences with this?
Randy
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