title: Retrieval of the effective constitutive parameters of bianisotropic metamaterials.
abstract: We propose a method to retrieve the effective constitutive parameters of a slab of bianisotropic metamaterial composed of split-ring resonators from the measurement of the S parameters. Analytical inversion equations are derived for homogeneous loss-less bianisotropic media, and a numerical retrieval approach is presented for the case of lossy bianisotropic media. The method is verified both analytically and numerically, and it is shown that the results for various split-ring resonator metamaterials qualitatively corroborate the conclusions found in published papers. The proposed retrieval method can be used as a valuable tool for the study of anisotropic and bianisotropic properties of metamaterials.
authors.affiliation: Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
authors.forename: Xudong
authors.initials: X
authors.lastname: Chen
authors.forename: Bae-Ian
authors.initials: BI
authors.lastname: Wu
authors.forename: Jin Au
authors.initials: JA
authors.lastname: Kong
authors.forename: Tomasz M
authors.initials: TM
authors.lastname: Grzegorczyk