[SI-LIST] AW: Re: HFSS or CST

Stephen,
when you make a direct comparison as described, than you should consider both 
time and frequency domain. I could imagine, the results would be different when 
you look at the time domain.
And compare also simulation run time for the same geometry.

Having both would be probably not bad . . .but that's a question for a huge 
wallet...
Bruce Archambeault from IBM has answered to the question, how he would verify 
simulation results, "take another simulator. And when you are not sure, take 
another again", and so on . . .
3D modelling software do a physical and mathematical approach of solving 
Maxwells equations. The approaches are different and can be better for one 
problem and not so good for another question.

As recommended, taking an eval version for deep testing for the specific 
problems is a good way to find the appropriate tool.
Four weeks may be a short time for testing a very complex software and if you 
have not so much experience in 3D modelling. There are very cheap packages for 
simpler geometries where you can learn to how to deal with a 3D problem. See 
eg. at Sonnet and Simberian.

Andreas

-----Ursprüngliche Nachricht-----
Von: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] Im 
Auftrag von Hall, Stephen H
Gesendet: Donnerstag, 16. April 2009 18:21
An: sanjeev_gupta@xxxxxxxxxxx; skgupta2005@xxxxxxxxx; si-list@xxxxxxxxxxxxx
Betreff: [SI-LIST] Re: HFSS or CST

In the past, I lead a group that focused on developing modeling methods for 
future high-speed digital designs.  We had both CST and HFSS.  People on my 
team would develop models of connectors, vias, sockets ... etc and compare the 
results to measured data.  HFSS gave better results than CST when comparing 
modeled results to measurements.  In my humble opinion, HFSS is the more 
accurate tool, so that is what we standardized on and that is what I would 
recommend you buy.

Steve



-----Original Message-----
From: GUPTA,SANJEEV (A-Sonoma,ex1)
Sent: Wednesday, April 15, 2009 7:31 AM
To: Sanjay G; si-list@xxxxxxxxxxxxx
Cc: GUPTA,SANJEEV (A-Sonoma,ex1)
Subject: RE: [SI-LIST] HFSS or CST



Hello Sanjay,



You also have the option of buying EMPro from Agilent Technologies.



Thanks and regards

Sanjeev Gupta

Agilent Technologies

EEsof Division



-----Original Message-----

From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On 
Behalf Of Sanjay G

Sent: Wednesday, April 15, 2009 3:16 AM

To: si-list@xxxxxxxxxxxxx

Subject: [SI-LIST] HFSS or CST



Hello

I have the option of buying either HFSS or CST.

Which one should I buy? which is better? and How much is the approx. cost

difference.

Thanks





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