need help in hfss for defining CPW ports

Hi,i am solving an ieee paper for UWB(3.1-10.6) range using CPW port.I am finding problem in defining CPW ports .Iam attaching my file ,can anyone help me how to define it.

Feed :width=3mm and spacing=0.3mm.

The attached file must have a vswr<=2 in 2790 to 3280 MHz and 3830 to 4910 MHz .