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Effective complex permittivity and permeability of composite planar left‐handed transmission‐line metamaterials on CPW
Author(s) -
Gao Jing,
Zhu Lei
Publication year - 2006
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.21597
Subject(s) - metamaterial , permittivity , transmission line , microwave , planar , coplanar waveguide , capacitive sensing , materials science , electric power transmission , permeability (electromagnetism) , relative permeability , optoelectronics , optics , acoustics , physics , engineering , telecommunications , electrical engineering , computer science , dielectric , composite material , chemistry , biochemistry , computer graphics (images) , membrane , porosity
We report the effective complex permittivity and permeability of 1D planar left‐handed transmission‐line metamaterials. These metamaterials are formed on coplanar waveguide (CPW) with simultaneous load of series‐capacitive and shunt‐inductive elements in periodic intervals. By employing our self‐calibrated method of moments (MoM), the effective permittivity and permeability of these 1D metamaterials are numerically derived to illustrate the propagating and evanescent guided‐wave behaviors over a microwave frequency range. We demonstrate that, in a certain frequency band, the permittivity and permeability simultaneously become negative with zero imaginary parts, and the transmission phase of a finite‐extent CPW metamaterial becomes negative, as exhibited by both simulation and measurement. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 1050–1052, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21597