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problem about metamaterial s parameter simulation using cst

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roycia

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hi guys,

I am using cst to simulate metamaterial sturctures. One problem confuses me a lot : I oftern got results of s11 and s12, which do not satisfy law of energy conservation, since s11^2+ s12^2 >1, even in the case of lossy metal structure. I thought something is wrong with my simulation . To my surprise, many cst official modals also generate s parameters like that way!

Will it affect extracting epsilon and mu correctly? Do you guys meet such problem?

thanks
 

Re: problem about metamaterial s parameter simulation using

how can you extract epsilon and mu from the reflection and transmission coefficient. can you please upload your program.
 
Re: problem about metamaterial s parameter simulation using

does ny1 know how to open an HFSS file in CST?
 

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