Low Frequency Ultra-Thin Compact Metamaterial Absorber Comprising Split-Ring Resonators  

作　　者：林宝勤 达新宇 赵尚弘 蒙文 李凡 郑秋容 王布宏 

机构地区：[1]Institute of Information and Navigation, Air Force Engineering University, Xi'an 710077

出　　处：《Chinese Physics Letters》2014年第6期211-214,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 61271250, 61172148, and 61302153.

摘　　要：We present a design of a low frequency ultra-thin compact and polarization-insensitive metamaterial absorber （MA）. The designed MA is a two-layer structure, a periodic array of novel split-ring resonators （SRRs）, which are constructed in an FR4 dielectric layer, and another ultra-thin grounded sheet is attached to the bottom. Numerical simulated results show that the proposed MA can realize effective absorption at the frequency 281.9 MHz, and its overall thickness is just only 0.29% of the resonant wavelength, the unit space is only 2.57%, and the absorbanee is kept well for a wide range of incident angles for different polarizations. In addition, the proposed MA is changed into a more compact one when the inter-digital structures are introduced in the SRRs. One convenient experiment is carried out in a rectangular waveguide simulator.We present a design of a low frequency ultra-thin compact and polarization-insensitive metamaterial absorber （MA）. The designed MA is a two-layer structure, a periodic array of novel split-ring resonators （SRRs）, which are constructed in an FR4 dielectric layer, and another ultra-thin grounded sheet is attached to the bottom. Numerical simulated results show that the proposed MA can realize effective absorption at the frequency 281.9 MHz, and its overall thickness is just only 0.29% of the resonant wavelength, the unit space is only 2.57%, and the absorbanee is kept well for a wide range of incident angles for different polarizations. In addition, the proposed MA is changed into a more compact one when the inter-digital structures are introduced in the SRRs. One convenient experiment is carried out in a rectangular waveguide simulator.

分 类 号：TN751.2[电子电信—电路与系统] TN751.12