determination height and weight of patch antenna

I am in the initial stage of design antenna. I need to calculate the dimension of patch.
The substrate i used is RT 5880, so the dielectric constant is 2.2.
But how i determine my height of patch in order to calculate my length and width?Thanks

---------- Post added at 14:59 ---------- Previous post was at 14:58 ----------

I am designing a 60GHz wideband antenna.

hi i attach its calculation i hope it useful for u