printed wide slot antenna with parasitic centre patch

base paper.pdf pls help me to design this model in hfss.............urgently required..........give step wise explaination...

i have designed this model but i dont know how to use stub in hfss as given in the paper.....thats why results are not accurate as i am not using stub in my design.....................can any body help me to come out this problem?


thanks in advance.....