metamaterial notch filter with HFSS11

Hi everyboady

I tried to simulate some papers using HFSS11 after trying all examples within the user guide and only the examples worked perfect and others were far from the results shown in the papers I thing I still have problem with boundaries and excitation and I attach one project I did but still the results not same as the real one any suggestions
Regards, Hussam

I attach page of the design from the original paper