Check Antenna WLAN dual-band using CPW and EBG in CST, please !

Hi everyone, I have a little problem, could you help me ?

I consulted a paper about dual band using coplanar waveguide, I simulated it in CST,
but the result seemed very diffferent from that paper, I mean it was wrong.

Setting port is ok, beacause E at port is QUASI-TEM and similar to my privious cpw simulation.
Boudaries conditions are open and add space at all directions.

I think I shoud check the signal and change it, but I don't know how to do.
Could you help me,

Thank guys !