Mononpole antenna simulation using HFSS

Hi, I am a beginner in using HFSS and i need to simulate a λ/4 monopole antenna, can anyone help me please.
Thanks

Take a look at this example. It is designed for 2.45 GHz.

Thanks for your help, but i can't open it. The file is either corrupted, or an HFSS10 file, i have HFSS9.2, sorry for inconvinience.

ya, you are right. It was designed in HFSS 10. However, monopole antenna is very straight forward. I've attached some figures. May be you can design your antenna from it.

Thanks

is that important choosing airbox as cylinder or polyhedron?

not really! I was trying something, that's why i used polyhedron.

if you use cylinder you cannot use pml boundary setup. pml bounday setup is recommended by ansoft to insure accurate field calculations. so if accuracy of radiation patterns is important, a rectangular or square bounday should be constructed and in turn defined in pml.