How to enter complex conductivity vs. frequency into CST

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Hi,

Following the discussion here: https://www.edaboard.com/threads/223918/ I obtained complex conductivity vs. frequency data of graphene material. I'm using CST and I don't know how to enter complex conductivity values in CST. I searched a lot for several days and what I concluded that I can only enter frequency dependent conductance into CST but it doesn't get complex numbers. Do you have any idea on this?

Any help is greatly appreciated. Thanks a lot.
 

Thanks for fast reply. I don't know how to convert to complex permittivity. Could you please help on this?
 

hi, i am not sure this is correct, but this is how i did it:

1)obtain graphene conductivity from kubo formula using Matlab.
2)create new material->choose type:surface impedance
3)properties->load file from matlab
*it needs three columns (frequency, resistance, and reactance)
 
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