HFSS Wave Port size

Hello guys,

I am designing an antenna similar to a monopole. There are two parts, the ground and the signal. Do I need one or two waveports?

I′ve put one waveport at the signal pin. If the waveport is exactly as the pin (copper), the program reports an error. The error dissapear if the waveport is bigger than the pin. Is that normal?

You might want to look at how to model an coaxial/sma input using hfss waveport.