TAPERED ROD ANTENNA SIMULATION (HFSS) Model Attached

Hi,

I am simulating a tapered antenna rod using HFSS v12; however, the radiation antenna pattern is not looking right. I am using a circular wave port guide. I am using two excitation modes. I want to achieve HE11 excitaion. I have attached the model.

Any feedback is appreciated.

Ilde

i have hfss11 can u send me that version file then i can see
or if u can share version 12 license probably i can check ur design