Experimental analysis and comparison between cross-shaped metamaterial absorber and its complementary structure

被引:4
作者
Wang, Yang [1 ]
Wang, Lili [1 ]
Song, Jian [1 ]
Li, Minhua [1 ]
机构
[1] Ningbo Univ, Fac Elect Engn & Comp Sci, Ningbo 315211, Zhejiang, Peoples R China
基金
中国国家自然科学基金;
关键词
complementary structure; effective material parameters; metamaterials absorber;
D O I
10.1002/mop.31666
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
In this article, cross-shaped metamaterial absorber (CSMA) and its complementary structure (CCSMA) with uniform parameters are experimentally analyzed in details. Perfect absorptions with intensities over 99.5% have been achieved at 4.99 GHz for CSMA and 5.39 GHz for CCSMA, respectively, both of which are equipped with polarization insensitive performance. For transverse electric (TE) mode, the parameter FSOIAs (frequency sensitivity of oblique incident angles) of these 2 absorbers is nearly the same with little values. However, the absorption peaks of the complementary one shift obviously to lower frequencies with wider transverse magnetic (TM) incident angles, and the FSOIA reaches up to 0.98% in simulation (0.66% in experiments), which is nearly 5 times stronger than that for TE situation. Besides, detailed comparison about the effective material parameters including relative permittivity, permeability, and relative impedance have been conducted by S-parameter retrieval method. Microwave experiments are performed to successfully demonstrate the numerical results.
引用
收藏
页码:930 / 936
页数:7
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