I want to simulate the antenna in the paper

i attached a paper about the harmonic suppression antenna

and my ADS workspace.zip file

I have to use this antenna. I wanted to try the simulation before using it

the result is as shown below..

4Ghz

8Ghz

12Ghz

The results are very different from the paper. 8Ghz , 12Ghzharmonic components should be removed, but not..

I do not think the paper is wrong.I want to know what part of the simulation I made a mistake

have a good day

附图/附件

tms220_antenna_test_wrk.zip

harmonic suppression slot antenna 4GHz.pdf

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