cst design questions?

hi all,i ask about some cst questions:
1- what differ between wavegiude and discret port and which preffered for planar antennas?
2- suitable width and height of wavegide port?
3-how i define the adaptive meshing?
thanks all

hi, i would like to ask about designing a rectangular fractal antenna using cst software....if u had an example of this antenna could u give it to me?i need in 3D