convergence problems with horn-pyramidal antenna

Hey guys,

I am trieng to simulate a horn-pyramidal antenna for the w-band (75 GHz-110 GHz). I calculated all parameters I need (A, B, ..)and now the simulation using HFSS. The Problem is that it takes a couple of hours till i get the result: simulation did not converged.

my settings for the setup:

max. number of passes: 10
max. delta S: 0.0002
max. refinement per pass: 10%
max. delta Z_0 = 0.2%

interpolation sweep:
min. Solution: 2
min. number of subranges : 4

Your frequency is bit higher I mean even mesh generated for 75 GHz would be enough to drag the simulation time longer and upper limit 110 GHz so if you are trying to simulate the antenna with some normal PC then two hours is not that big time when you are also using sweep. You have not mentioned your definition of sweep as it can make simulation time bit longer. Since it is also not converging so making the wait time quite irritating I would suggest relax your convergence condition like max number of passes I think five would be fine number then relax max delta s make it 0.001 that is reasonable number this will reduce your simulation time and will give you sound chance to change your model. Why it is not converging with this information I can not comment on this point