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[SOLVED] patch antenna radiation efficiency in cst

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amntt

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after i simulate in farfield result ,3d view i see rad.eff=-1.173db and total rad.eff=-1.204 how i can convert these results to percent as ussually said for antennas:ex:70% efficiency:!:
 

radiation efficiency = 100*10^(-1.173/10) = 76%. If this is an electrically small antenna, this is a good figure.
 
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    amntt

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sorry what is the formula of calculating radiation efficiency?
 

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