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How to calculate complex permittivity from complex conductivity 
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#1
Aug314, 05:18 AM

P: 46

Hi,
I got the complex conductivity vs. frequency table of a metamaterial. Its first lines are like this: f conductivity 1GHz 0.004+0.00297i 1.1GHz 0.004+0.00295i 1.2GHz 0.003+0.00294i the table goes up to 10GHz. Now the problem is that I need to enter this material into electromagnetic simulation tools. But these tools require a real permittivity and frequency dependent loss tangent (CST and HFSS). So how can I calculate complex permittivity (real permittivity and loss tangent) from the above data? Thanks in advance. 


#2
Aug1214, 03:56 PM

Admin
P: 9,696

I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?



#3
Aug1214, 04:34 PM

Mentor
P: 41,299

http://en.wikipedia.org/wiki/Electrical_conductivity http://en.wikipedia.org/wiki/Permittivity . 


#4
Aug1314, 02:54 AM

Sci Advisor
P: 3,628

How to calculate complex permittivity from complex conductivity
The problem is that there are many different conventions out there, but I would guess that in your case ##\epsilon =\epsilon_0+\frac{i}{\omega} \sigma##.



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