difference between simulated and measurement results in UWB

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Leilon

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Hi all,
I designed a UWB antenna and implemented on fr4 substrate, but my measurement result is not very good, what's happening? what's solution?
I uploaded my result.

thanks
 

to me its damn good!
 

biff44, why?! it's cheap
 

hi,
Is you simulate the gainand radiation pattern??
may be this result correct for s11 only
i think you should get better result for all the s11,gain,directivity and radiation pattern then you can measure and compar your results

Thank

Eng.M.hassanien
 

Re: difference between simulated and measurement results in

Leilon said:
biff44, why?! it's cheap
Click to expand...

It IS cheap. But to be wondering why there is a small discrepancy between measured and predicted data at 10 GHz on an FR4 board is.....asking too much?
 

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