UWB stacked patch antenna

i have designed a UWB stcaked patch antenna. i attached my design paper. i cant get the results like in the paper. The graph wouldnt come below -10db. so anyone please help me to solve this problem.

Welcome Naveenkumar.G.K,

Congratulations on compiling such a paper -- it's a bit of work, and you've obviously put alot of thought and effort into it.

That being said, I think there are a couple of outstanding issues:

- Just because there's power going into an antenna, that doesn't mean it's being radiated. What is the antenna's gain as a function of frequency?
- What mode(s) are being excited over this bandwidth? Resonant antennas are usually operated on modes which have very small bandwidths. Field plots would be best, to support your theory that it is operating on "patch" modes.

Best of luck with your eventual submission.

please atttach the hfss file .

Actually, he didn't wrote the paper, he used it as design template.

@Naveenkumar.G.K
How did you simulated your antenna and what software are you using?

My misunderstanding -- apologies.

I'd be cautious about putting too much stock in the results then, as those concerns still hold.