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Stopband Phenomena in the Passband of Left-Handed Metamaterials |
| ZHAO Xiao-Peng;ZHAO Qian;ZHANG Fu-Li;ZHAO Wei;LIU Ya-Hong |
| Institute of Electrorheological Technology, Department of Applied Physics, Northwestern Polytechnical University, Xi’an 710072 |
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| Cite this article: |
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ZHAO Xiao-Peng, ZHAO Qian, ZHANG Fu-Li et al 2006 Chin. Phys. Lett. 23 99-102 |
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Abstract Stopband phenomena are reported in the passband of left-handed metamaterials. The samples with linear defect are designed by removing one layer of split ring resonators (SRRs). It is shown that the left-handed transmission peaks have a distinct transform with the relative deviation of the SRRs centre from the wire centre δ, from a single left-handed peak, double left-handed peaks with different magnitude to no transmission peak, i.e. left-handed properties of metamaterials disappear. Numerical simulation shows that the change of δ makes the effective permeability shift at a frequency range, where stopband occurs. It is thought that the stopband in left-handed passband is due to the symmetry breaking between SRRs and wires in the metamaterials.
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| Keywords:
41.20.Jb
73.20.Mf
42.60.Da
42.70.Qs
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Published: 01 January 2006
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| PACS: |
41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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42.60.Da
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(Resonators, cavities, amplifiers, arrays, and rings)
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42.70.Qs
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(Photonic bandgap materials)
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