Abstract

We propose an improved method to retrieve the effective constitutive parameters (permittivity and permeability) of a slab of metamaterial from the measurement of S parameters. Improvements over existing methods include the determination of the first boundary and the thickness of the effective slab, the selection of the correct sign of effective impedance, and a mathematical method to choose the correct branch of the real part of the refractive index. The sensitivity of the effective constitutive parameters to the accuracy of the S parameters is also discussed. The method has been applied to various metamaterials and the successful retrieval results prove its effectiveness and robustness.

Keywords

MetamaterialSlabRobustness (evolution)Constitutive equationPermittivityComputer scienceAlgorithmApplied mathematicsMaterials scienceOpticsMathematicsFinite element methodPhysicsDielectric

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Publication Info

Year
2004
Type
article
Volume
70
Issue
1
Pages
016608-016608
Citations
2133
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Xudong Chen, Tomasz M. Grzegorczyk, Bae‐Ian Wu et al. (2004). Robust method to retrieve the constitutive effective parameters of metamaterials. Physical Review E , 70 (1) , 016608-016608. https://doi.org/10.1103/physreve.70.016608

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DOI
10.1103/physreve.70.016608