hfss symmetry
Zotti's Question -
The problem is with the lambda refinement requirement. That is my guess. I had a similar case, which I am still working on. I set the lambda to 10%. And I was running it on a cluster. It did not go through. When I left it @ 25%. Everything was fine. Decrease your level of accuracy, and see what happens. Remove any manual mesh refinement, and see what happens.
Then slowly refine the simulation. Sometimes you do not need to over refine your results. If after the first refinement, you do not see a change in results - do not bother going far.
Added after 6 minutes:
Deepa,
I have been able to simulate a structure that is about 10m by 2m by 11m. In fact, it was an aeroplane. At about 60MHz. This was in HFSS10. There should not be much difference. Well kind off - they changed the type of meshing.