designing a Bow-tie antenna using CST

hi all,
I want to design a bow-tie antenna using CST MWS.
Can anyone help me in designing this antenna?
i really need your help.
thanks

Yes.. and what is the point?

The point is that in bow-tie antenna the design contains two triangular shaped patches. I don't know how to design them in CST. Plus in this design angle is also involved. How can angles be introduced in CST?

Probably one way is import from autocad any surface and them you can change properties from PEC to semiconductor and so on.