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Negative Refraction of a Symmetrical π-shaped Metamaterial |
| YAN Chang-Chun1,2;CUI Yi-Ping1;WANG Qiong1;ZHUO Shing-Chuang1 |
| 1Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 2100962School of Physics and Electronic Engineering, Xuzhou Normal University, Xuzhou 221116 |
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| Cite this article: |
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YAN Chang-Chun, CUI Yi-Ping, WANG Qiong et al 2008 Chin. Phys. Lett. 25 482-484 |
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Abstract A symmetrical π-shaped metamaterial is investigated. Numerical simulations exhibit the negative-refractive property of this structure. The complex refractive index n, wave impedance z, effective permittivity ε and effective permeability μ have been retrieved from the simulated S parameters. The negative-refractive band lies between 11.2GHz and 13.05GHz. The frequency band with high transmission with low loss occurs between 11.95GHz and 12.5GHz, which is helpful for practical applications. The mechanism of the electromagnetic resonance is also revealed.
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| Keywords:
41.20.Jb
78.20.Ci
73.20.Mf
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Received: 09 November 2007
Published: 30 January 2008
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| PACS: |
41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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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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