Problem with optimization in IE3D evaluation copy

hi,

i downloaded IE3D evaluation copy frm zeland.com and tried to simulate a stacked patch antenna. i can run simulation.but when i define some variable for optimization(say patch length) and give for optimization ....it shows some error..saying...this process type is not optimization.

kindly help me sort out this prob.
with regards
abhi

hi abhi,

try out with powell optimizer.

Hi, abhi:

I have not seen such a message. Maybe you can send me the picture and I can help you. Thanks!