Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 42, Issue 15, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/42/15/155413
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Funding
- National Natural Science Foundation of China [50632030, 60871027]
- Science and Technology Ministry of China [2009CB613306]
- Natural Science Foundation of Shaanxi Province [SJ08F01]
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A broad-band three-dimensional (3D) isotropic left-handed metamaterial (LHM) is proposed in this paper. The 3D unit cell is composed of a dielectric cube with metallic Jerusalem crosses on all its six sides. A theoretical model was set up by using equivalent-circuit theory. The magnetic and electric resonant frequencies of the proposed LHM are always equal, which guarantees the existence of a left-handed band. Numerical simulations were carried out to verify the proposed LHM. The results show that the relative bandwidth reaches up to 44.6%; the left-handed band is independent of the polarization of incident waves and is almost the same for different incident angles. Thus, the proposed LHM is a good candidate as a broad-band 3D isotropic LHM.
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