Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

CST error Broadband farfield monitor: Postprocessing failed.

Status
Not open for further replies.
S

shahid78

Full Member level 5
Joined
Jul 29, 2006
Messages
288
Helped
34
Reputation
68
Reaction score
14
Trophy points
1,298
Activity points
3,294
cst warning messages

hi

during simulation of some structures in cst . i get the this warning message:

maximum number of pulse widths simulated,solver stopped.
please note that the steady state energy criteria has not been satisfied.


can we trust the results if one get this warning message and if not what can we do to avoid this warning

thanks for any helping comments
 

CST MWS warning message

Hi sahid78,

have you try to add more pulse in your signal excited (I think with this you will not have this warning).

regards

Piboo
 

Re: CST MWS warning message

hi piboo

what do u mean when you say ,if i add more pulse in my excited signal?
how can i do that?

regards
 

Re: CST MWS warning message

Try reducing the "accuracy" on the solver menu to lets say -30db - if this still not solving the probem then reduce on "global mesh properties " the "lines per wavelength" to a lower values say 4.
 

Re: CST MWS warning message

hi angolaX

well i dont think so its the solution to my problem
the steady state enerygy criteria is necesary to get accurate results .if i reduce it the enerygy in the computational domain will still be there and simulation will stop thus giving not accurate results in the frequency domain
similary decreasing the no of lines per wavelenght has to be at least 10 in order to have a good mesh

anyway thanks for your comments
 

Re: CST MWS warning message

It seems that your geometry is too resonant for the transient solver to achieve the required accuracy (e.g. -40dB) during the pre-defined number of pulses...

If your energy has decayed to an unacceptable high level (e.g. reached only -20dB), then to increase the accuracy you MUST increase the number of simulated pulses (as piboo already recommended). This can be done at:

!T (transient solver) -> Specials -> Steady State tab -> Max number of pulses

Increase this number to 200 (for example) and run your simulation.
(This might take a lot longer to solve, but at least you don't compromise accuracy).

Hope this helps !

cheers!
mog.
 

CST MWS warning message

Hi Shahid,
I also get this messege for my structures. I went for 2 days CST training couple of weeks back and they told me to increase the Max number of pulses as mogwai wrote. But you have to check the pulse number by your own. Also if you change your templete for resonant structure it might help. Try with filter or resonant coupler settings.

Regards
Praful
 

CST MWS warning message

Hi Sahid,

little bit late but mogwai and prafuldeo has answer the same thing as I was thinking.

Hope it works now.

regards
Piboo
 

Re: CST MWS warning message

hi

i will try to implement what different people have recommended to me and will let you know if it helps.
thanks a lot to all people who share their expertise

regards
shahid78
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top