Planar Reflector Antenna

Hi all!

I really need help on simulating a planar reflector + the pyramidal horn. I've already built up the design, i used port waveguide as the excitation signal, and i set the boundary condition to symmetrical planes. I tried to use T! solver but at the end of simulation it said that the solver stopped because the maximum pulse of widths simulated and I couldn't get the result in the far field. Somebody, please help me...

thank you in advance...

Regards,

gracia