期刊
JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS
卷 26, 期 7, 页码 986-995出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09205071.2012.710447
关键词
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资金
- Direccion General de Investigacion of the Spanish Ministerio de Educacion y Ciencia [TEC 2010-21496-C03-02]
- Fundacion Seneca Region de Murcia [11844/PI/09]
Here we present the experimental characterization of a new material constituted by an array of four same handedness three-dimensional cranks impressed on a dielectric substrate. Using a free-wave experimental set up, the transmission and reflection coefficients were measured, and effective values for the refractive index, permittivity and permeability, and chirality parameter were calculated. The material exhibits a high electromagnetic activity and relatively low refractive index; the joined effect of both factors results into negative values for the refraction index for one of the two circular eigenmodes in a 0.4 GHz bandwidth above the resonance frequency.
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