problem with Simulation UWB antenna with CST

Hi everybody,
I have simulated a UWB antenna with CST, but my result in wrong. I'm new in CST, plz help me.
I have attached the CST file.

Thanks

hye.. I also working with UWB antenna wth CST.. one tips to obtain UWB antenna.. use transmission line to feed a pach antenna and use edge feed. and use half ground plane.. I am using FR4 board for my design. to obtain the UWB frequency (3.1 GHz to 10.6 GHz) you can play around with ground plane and patch size.. tQ

Hey bro are u using any other software other than CST?

Dear derek638, I used HFSS also, but it's result is different form article and is the similar to CST