Negative refractive index and negative refraction of waves in lossy metamaterials

被引：3
|
作者：
Ji, L. [1 ]
Varadan, V. V. [1 ]
机构：
[1] Univ Arkansas, Dept Elect Engn, Microwave & Opt Lab Imaging & Characterizat, 700 Res Ctr Blvd, Fayetteville, AR 72701 USA
来源：
ELECTRONICS LETTERS | 2016年 / 52卷 / 04期
关键词：
metamaterials; wave propagation; negative energy refraction; negative phase refraction; lossy metamaterials; hypothetical nonlossy metamaterials; S-parameters; split ring resonator-wire metamaterial samples; transverse-electric polarisation; positive refractive index;
D O I：
10.1049/el.2015.3416
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An experimental study of the conditions for negative energy refraction and negative phase refraction in lossy metamaterials is provided. In hypothetical non-lossy metamaterials, the angles of phase and energy refraction are one and the same. Using measured S-parameters of split ring resonator-wire metamaterial samples, it is shown that negative refractive index is not a requirement for negative energy refraction in lossy metamaterials. It was assumed that the sample is effectively homogeneous and isotropic in the direction of wave propagation. For transverse-electric polarisation, negative energy refraction with a positive refractive index was demonstrated.
引用
收藏
页码：260 / 261
页数：2
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