I tried to simulate metamaterial structure in hfss using master and slave boundaries. However I didn't get negative epsilon. And I couldn't obtain graph of mu versus frequency. Please suggest me a solution.
I don't think it is quite correct to characterize a metasurface with mu and epsilon. The ideal metasurface is infinitely thin. What use does permeability and permittivity have in this case? Instead, think about how the metasurface affects amplitude and phase of an applied wave. If you think you need permeability and permittivity, perhaps you have a metamaterial instead of a metasurface.
Refer to the paper "Electromagnetic Parameter Retrieval from Inhomogeneous Metamaterials" by D.R. Smith
Obtain S11 and S21 graphs from HFSS and implement the equations in MATLAB to retrieve negative mu and epsilon.
I don't think it is quite correct to characterize a metasurface with mu and epsilon. The ideal metasurface is infinitely thin. What use does permeability and permittivity have in this case? Instead, think about how the metasurface affects amplitude and phase of an applied wave. If you think you need permeability and permittivity, perhaps you have a metamaterial instead of a metasurface.
Thanks Pratik Ghate and Raymond Rumpf .
To differentiate metasurface from conventional FSS, I wanted the graph of epsilon and mu.
It does not make sense to characterize a metasurface via epsilon and mu. Are you simulating a metasurface or a bulk metamaterial?
An FSS is also a thin device where the concepts of effective permittivity and permeability do not really make sense to apply.
Same as how you do for Meta materials.In Meta surface, you should compute the S matrix for the whole structure(Not the unitcell)
Thanks Jayaprakash Poojali and Richard J Williams
I am interested to reduce the return loss of a patch antenna by loading metasurface without degradation of radiation pattern.
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