Please help me with CST excitation

am tryin' to simulate a stripline feed patch antenna with CST MICROWAVE and am facin' the excitation dilemma of that stripline. so please if anybody has a clue, don't hesitate to give me the needed information or send me a simulation model.
Thanks for your interest and support

A desing example is available in CST maual. ITs better if you upload your model which will better to figure out your problmen
Regards

thanks for your interest
here is my designed model, please take a look at it.

There are lot of ways for the magic. I slect
1) The face of strip follwing pressing waveguide port
2) Extend 5mm in both sides of x
3) Zmin should be ground and Zmax almost 3 times height of substrate
4) Define reference level exact measurement of S11 phase

Regards

Thanks a lot for your valuable help
Regards