超薄宽带光学透明微波超材料吸波器的理论分析与设计

Theoretical Analysis and Design of Ultrathin Broadband Optically Transparent Microwave Metamaterial Absorbers.

作者信息

Deng Ruixiang, Li Meiling, Muneer Badar, Zhu Qi, Shi Zaiying, Song Lixin, Zhang Tao

机构信息

Key Laboratory of Inorganic Coating Materials CAS, Shanghai Institute of Ceramics, Chinese Academy of Sciences (SICCAS), Shanghai 200050, China.

Department of Electronic Engineering and Information Science, University of Science and Technology of China (USTC), Hefei 230027, China.

出版信息

Materials (Basel). 2018 Jan 11;11(1):107. doi: 10.3390/ma11010107.

DOI:10.3390/ma11010107

PMID:29324686

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5793605/

Abstract

Optically Transparent Microwave Metamaterial Absorber (OTMMA) is of significant use in both civil and military field. In this paper, equivalent circuit model is adopted as springboard to navigate the design of OTMMA. The physical model and absorption mechanisms of ideal lightweight ultrathin OTMMA are comprehensively researched. Both the theoretical value of equivalent resistance and the quantitative relation between the equivalent inductance and equivalent capacitance are derived for design. Frequency-dependent characteristics of theoretical equivalent resistance are also investigated. Based on these theoretical works, an effective and controllable design approach is proposed. To validate the approach, a wideband OTMMA is designed, fabricated, analyzed and tested. The results reveal that high absorption more than 90% can be achieved in the whole 6~18 GHz band. The fabricated OTMMA also has an optical transparency up to 78% at 600 nm and is much thinner and lighter than its counterparts.

摘要

光学透明微波超材料吸收体（OTMMA）在民用和军事领域都有重要应用。本文采用等效电路模型作为设计OTMMA的出发点。对理想轻质超薄OTMMA的物理模型和吸收机制进行了全面研究。推导了等效电阻的理论值以及等效电感与等效电容之间的定量关系用于设计。还研究了理论等效电阻的频率相关特性。基于这些理论工作，提出了一种有效且可控的设计方法。为验证该方法，设计、制作、分析并测试了一种宽带OTMMA。结果表明，在整个6~18 GHz频段内可实现超过90%的高吸收率。制作的OTMMA在600 nm处的光学透明度高达78%，并且比同类产品更薄、更轻。