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Negative Permittivity for Metal in Time Domain RF Module

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This might be very simple problem for the experts but I am here struggling with it for a long time.

I am trying to perform transient simulation of gold antenna in RF module. However, at high frequencies (around 100 THz) gold shows complex permittivity (eps=eps_r , eps_im).

My problem is , the real part of eps is negative in THz frequency and it causes problem in the time domain simulation in Comsol. Can you suggest me how to solve the problem in time domain for metal which has negative real permittivity.

Please let me know. Thanks a lot !


1 Reply Last Post 19.09.2016, 10:56 GMT-4

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Posted: 8 years ago 19.09.2016, 10:56 GMT-4
Can anyone help me here ?

-Rishad
Can anyone help me here ? -Rishad

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