MY HFSS Design of UWB is not working kindly help

I am simulating a UWB antenna based on a paper but i am not getting results near to paper kindly help me
i am uploading paper as well as my
HFSS design

.hi
you have not defined radiation boundary for airbox

no i have defined but result is same may be file i have uploaded don't have air box u can define and check still result are not near to paper

i tried but the best answer that i get is this!
:(

yes dear i got answer and my results are perfectly matched with paper but again thanks for help

your welcome, by the way are the result same as mine? and if not could explaine the problem ? im so curious! :D