Effective medium approach of left-handed material using a dispersive FDTD method

Author

Lee, Jung-Yub ; Lee, Jeong-Hae ; Kim, Hyeong-Seok ; Kang, No-Weon ; Jung, Hyun-Kyo

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., South Korea

Volume

41

Issue

5

fYear

2005

fDate

5/1/2005 12:00:00 AM

Firstpage

1484

Lastpage

1487

Abstract

Left-handed material (LHM) exhibiting negative permittivity and negative permeability in certain band has dispersive medium property varying with frequency. The effective permittivity and permeability function of this material have a similar form of Lorentz material model. Piecewise linear recursive convolution (PLRC) technique for finite difference time domain (FDTD) method is applied to simulate the propagation characteristic of LHM effectively. Modified anisotropic perfectly matched layer (APML) is proposed for absorbing boundary condition of LHM. The simulation results show narrow pass band in the stop band where LHMs have double negative properties.

Keywords

electromagnetic wave propagation; finite difference time-domain analysis; metamaterials; permeability; permittivity; piecewise linear techniques; LHM propagation characteristic; Lorentz material model; anisotropic perfectly matched layer; boundary condition; dispersive FDTD method; dispersive medium property; finite difference time domain method; left-handed material; narrow pass band; negative permeability; negative permittivity; piecewise linear recursive convolution; split ring resonator; stop band; Anisotropic magnetoresistance; Convolution; Dispersion; Finite difference methods; Frequency; Metamaterials; Permeability; Permittivity; Piecewise linear techniques; Time domain analysis; Anisotropic perfectly matched layer (APML); dispersive medium; double negative (DNG); finite difference time domain (FDTD); left-handed material (LHM); metamaterial; piecewise linear recursive convolution (PLRC); split ring resonator (SRR);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.844566

Filename

1430890