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metamaterial unit cell simulation problem in HFSS

metamaterial unit cell simulation problem in HFSS

metamaterial unit cell simulation problem in HFSS


I am totally newcomer with HFSS and what I want to do is to simulate a simple metamaterial unit cell structure in HFSS. The structure dimensions, boundary conditions and the structure itself are from Kevin Buell, Hossein Mosallaei and Kamal Sarabandi - "A Substrate for Small Patch Antennas Providing Tunable Miniaturization Factors" IEEE article. They find using low-order equivalent-circuit model that the resonance frequency of the structure is 106MHz, higher-order model shows 183MHz and full wave simulation shows "real" resonance frequency to be 250MHz. I build this metamaterial unit cell in HFSS according to the mentioned article but my simulation shows Fres=150MHz. I think I'm doing something wrong but I really don't know what. Please help me solve this problem.

Best regards!


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