I agree with Ryan and Al on using a good field solver for accurate impedance
and loss modeling over frequency. I recently benchmarked both Polar Si9000
Transmission Line Field Solver and Simbeor by applying my Cannonball
modeling technique to the Huray roughness model and compared results against
de-embedded measured data from Al's CMP28 Wildriver modeling platform. Both
tools gave excellent correlation to ~50GHz.
Bert Simonovich
Signal/Power Integrity Practitioner | Backplane Specialist | Founder
LAMSIM Enterprises Inc.
Web Site: http://lamsimenterprises.com
Blog: http://blog.lamsimenterprises.com/ ;
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Alfred P. Neves
Sent: 7-Apr-17 8:09 PM
To: rdawson16@xxxxxxxxxxx
Cc: si-list
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
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List forum is accessible at:
http://tech.groups.yahoo.com/group/si-list
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu