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Extraction of Effective Permittivity and Permeability of Periodic Metamaterial Cells  

Lee, Dong-Hyun (Pohang University of Science and Technology)
Park, Wee-Sang (Pohang University of Science and Technology)
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Abstract
The complex permittivity and permeability of various periodic metamaterial (MTM) cells are extracted by simulating a fictitious rectangular waveguide consisting of PEC and PMC walls. The shapes of the MTM cells include a thin wire (TW), a single split-ring resonator (SSRR), a double SRR (DSRR), a modified SRR, and a combined structure of the TW and the DSRR. The TW falls on a negative-$\varepsilon$/positive-$\mu$ region, the SRRs on a positive-$\varepsilon$/negative-$\mu$ region, and the combined structure on a negative-$\varepsilon$/negative-$\mu$ region. We also investigate how the permeability and permeability are affected by the dimension parameters of the MTM cells. Another extraction technique utilizing time domain signals is developed overcoming some limitations that the waveguide technique can not handle.
Keywords
Constitutive Parameter Extraction; Metamaterial Cells; Thin Wire; SRR;
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