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.