Multiple omnidirectional resonances in a metamaterial sandwich |
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Authors: | Jian-Wen Dong |
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Affiliation: | State Key Laboratory of Optoelectronic Materials and Technologies, Zhongshan (Sun Yat-Sen) University, Guangzhou 510275, China |
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Abstract: | Multiple omnidirectional resonances are found in a sandwich structure consisting of a left-handed metamaterial cavity and two single-negative-permittivity reflection walls. These resonances appear because the phase shift of left-handed metamaterial can cancel the reflection phase shift of single-negative-permittivity metamaterials at every incidence angle. By using such particular structure, a kind of structure possessing multiple omnidirectional resonances in both polarizations has been designed. In addition, issues associated with energy loss are discussed. |
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Keywords: | 41.20.Jb 78.20.Ci 42.81.-I 42.79.Ci |
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