how to feed this antenna ,need help

i have simulated a cpw antenna from a paper with cst,
but my simulated result is not the same with the paper's at all.
Who can help me to check my cst file?I don't know what's wrong on it.

Hello ai_si,
I've downloaded your model and put it on simulation to check the results. Is it possible for you to upload the full paper as I need to see the full information e.g materials etc for this design.

Regards
Praful

thank you.
:D