利用集总L-C元件构造的一维metamaterials特性的实验研究

Experimental verification of the characteristic of one-dimensional metamaterials by use of lumped-elements L-C

在普通微带传输线中周期性地加载集总L C元件能够构造一维特异性材料 (metamaterials) ,它具有与众不同的特异性质 .通过实验证实了波在这种结构中传播具有相速度与群速度方向相反的左手性通带 ,其折射率为负值 ,并发现平均折射率为零的能隙 .这种结构具有结构紧凑 ,参数可调 ,制作简单的优点 .

The metamaterials by use of L-C lumped-elements in the transmission line have the preternatural characteristic, which is different from the conventional dielectrics. We report the experimental results in the left-handed range with anti-parallel phase and group velocities in the metamaterials, with the negative refractive index, and we find the bandgap corresponding to zero averaged refractive index. The configuration offers some significant advantages: it is more compact in size, the material parameters can be tuned, and the method of fabrication is easy to carried out.