problem in my simulated file in cst?

hi all,i am in big problem that my results not be accurate as in paper
why?.i use same simulator cst.what wrong in my simulation pls help me
regards
here the simulated file and paper,i go nut pls pls help me urgently

hi all,any buddy download pls see my simulation and paper and give comments pls

Hi abdoeng,
Hope you fine.
I downloaded the files,
I'll check them ASAP.
I willl be glad if I could help you.
cheers.

Hi
In your simulation file there are simulated and measred S11. Did u fabricate the antenna?

hi snkhan.i try to get measured results as in paper to check cst for PBG structures,so i didn't fabricated it

regards