Experimental verification of negative refraction in a double cross metamaterial |
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Authors: | Christian Imhof and Remigius Zengerle |
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Institution: | 1.Department of Electrical and Computer Engineering,University of Kaiserslautern,Kaiserslautern,Germany |
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Abstract: | We report on microwave experiments with a metamaterial composed of pairs of metallic crosses. The transmission properties
of the structure show a left-handed transmission band at frequencies around 10.2 GHz. The validity of the negative effective
index of refraction is verified by a Snell’s law refraction experiment performed on a wedge-shaped sample of the metamaterial.
A second measurement of a similar wedge made from blank FR4 boards is done for reference. The results of the measurements
show positive refraction over the whole measured frequency band for the FR4 wedge as well as the refraction of the incident
radiation to negative angles within the designated left-handed frequency band for the metamaterial sample. |
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Keywords: | PACS" target="_blank">PACS 41 20 Jb 78 20 Ci 81 05 Zx |
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