sierpinski and carpet antenna geometry in cst or hfss

Dear all,

i am working on fractal antenna based on sierpinski geometry(gasket and carpet) ,and i am new with cst or hfss
if anyone have some workflow_example or tutorial on how to draw (sketch) these tough things plz help me! thank u all!

i am working on sierpenski fractal antenas...i am not getting the actual outputs of return los.. can u give me a tutorial on this??