DocumentCode :
801225
Title :
A double negative (DNG) composite medium composed of magnetodielectric spherical particles embedded in a matrix
Author :
Holloway, Christopher L. ; Kuester, Edward F. ; Baker-Jarvis, James ; Kabos, Pavel
Author_Institution :
U.S. Dept. of Commerce, Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Volume :
51
Issue :
10
fYear :
2003
Firstpage :
2596
Lastpage :
2603
Abstract :
We study a composite medium consisting of insulating magnetodielectric spherical particles embedded in a background matrix. Using results from the literature going back as far as Lewin (1947), we show that the effective permeability and permittivity of the mixture can be simultaneously negative for wavelengths where the spherical inclusions are resonant and that the medium results in an effective "double negative (DNG) media". Materials of this type are also called negative-index materials, backward media (BW), and left-handed materials. This type of material belongs to a more general class of metamaterials. The theoretical results presented here show that composite media having much simpler structure than those reported in the literature can exhibit negative permeability and permittivity over significant bandwidths.
Keywords :
composite insulating materials; dielectric materials; magnetic materials; permeability; permittivity; resonance; reviews; backward media; bandwidth; double negative composite medium; effective permeability; effective permittivity; insulating magnetodielectric spherical particles; left-handed materials; metamaterials; negative permeability; negative permittivity; negative-index materials; spherical inclusions; wavelengths; Dielectrics; Electromagnetic scattering; Magnetic materials; Magnetic moments; Metamaterials; Particle scattering; Permeability; Permittivity; Polarization; Resonance;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2003.817563
Filename :
1236077
Link To Document :
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