基于编码超表面的宽频带雷达散射截面缩减
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- 英文论文题名：A Coding Metasurface for Broadband Radar Cross Section Reduction
- 论文作者：薛宇 ; 姜文 ; 龚书喜
- 英文论文作者：XUE Yu ; JIANG Wen ; GONG Shu-xi ; National Key Laboratory of Antenna and Microwave Technology ; Xidian University
- 年：2016
- 作者机构：西安电子科技大学天线与微波技术国家重点实验室;
- 论文关键词：编码 ; 超表面 ; 宽频带 ; 雷达散射截面缩减
- 英文论文关键词：coding ; metasurface ; broadband ; radar cross section(RCS) reduction
- 会议召开时间：2016-08-17
- 会议录名称：2016年全国军事微波、太赫兹、电磁兼容技术学术会议论文集
- 语种：中文
- 分类号：TN95
- 学会代码：WBXB
- 会议名称：2016年全国军事微波、太赫兹、电磁兼容技术学术会议
- 会议地点：中国陕西西安
- 主办单位：中国电子学会微波分会、天线与微波技术重点实验室
- 学会名称：《微波学报》编辑部
- 页数：4
- 文件大小：688k
- 原文格式：D
- 会议级别：全国
摘要
提出了一种具有宽带雷达散射截面缩减特性的1 bit编码超表面。该超表面由两种单元组成:"0"单元和"1"单元,其反射相位差在很宽的频段范围内接近180?。通过对这两种基本单元的空间排布进行编码设计,使入射电磁波发生漫反射,可以实现雷达散射截面的缩减。全波仿真结果表明,在垂直入射的情况下,相对于同尺寸的金属板,该超表面可在10-20.5GHz的宽频段内基本实现10 d B以上雷达散射截面缩减,最大缩减量达到20.8 d B。该超表面具有低剖面、重量轻、频带宽等特点,因而在隐身新技术和新材料方面具有很大的应用潜力。
In this paper, a novel 1 bit coding metasurface is proposed and applied to broadband radar cross section(RCS) reduction. The metasurface is composed of "0" and "1" elements. The reflection phase difference of the two elements is about 180 ? in broad frequency band. By designing the coding sequences of the coding metasurface, broadband RCS reduction is obtained as a result of the diffuse reflection. Full-wave simulation results show that the RCS reduction more than 10 d B for coding metasurface can be achieved in a wide frequency range from 10-20.5 GHz with respect to the equal-sized PEC ground plane at normal incidence. The maximum reduction is 20.8 d B. The proposed metasurface has the advantages of low profile, light weight and broad band, which shows great potential applications in novel stealth technologies and materials.
In this paper, a novel 1 bit coding metasurface is proposed and applied to broadband radar cross section(RCS) reduction. The metasurface is composed of "0" and "1" elements. The reflection phase difference of the two elements is about 180 ? in broad frequency band. By designing the coding sequences of the coding metasurface, broadband RCS reduction is obtained as a result of the diffuse reflection. Full-wave simulation results show that the RCS reduction more than 10 d B for coding metasurface can be achieved in a wide frequency range from 10-20.5 GHz with respect to the equal-sized PEC ground plane at normal incidence. The maximum reduction is 20.8 d B. The proposed metasurface has the advantages of low profile, light weight and broad band, which shows great potential applications in novel stealth technologies and materials.
引文
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[10]闫昕,梁兰菊,张雅婷,丁欣,姚建铨.基于编码超表面的太赫兹宽频段雷达散射截面缩减的研究[J].物理学报,2015,15:463-470
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[12]Gao X,Han X,Cao W P,et al.Ultrawideband and high-efficiency linear polarization converter based on double V-shaped metasurface[J].IEEE Trans.Antennas Propag.,2015,63(8):3522-3530
[2]Sun S L,He Q,Xiao S Y,et al.Gradient-index meta-surfaces as a bridge linking propagating waves and surface waves[J].Nat Mater,2012,11(5):426-431
[3]Yu N and Capasso F.Flat optics with designer metasurfaces[J].Nat Mater,2014,13:139-150
[4]孙树林,何琼,周磊.电磁超表面[J].物理.2015,06:366-376
[5]陈红雅,王甲富,马华,屈绍波,张安学.基于开口谐振环的反射超表面设计及实验研究[J].微波学报,2014,03:1-4
[6]Cui T J,Qi M Q,Wan X,et al.Coding metamaterials,digital metamaterials and programmable metamaterials[J].Light Sci.Appl.3(10),e218(2014)
[7]Liang L J,Qi M Q,Yang J,et al.Anomalous Terahertz Reflection and Scattering by Flexible and Conformal Coding Metamaterials[J].Adv.Optical Mater.3(10):1374-1380,Oct.2015
[8]Yan X,Liang L J,Yang J,Liu W W,et al.Broadband,wide-angle,low-scattering terahertz wave by a flexible2-bit coding metasurface[J].2015 Opt.Express 29 128
[9]L.H.Gao,Q.Cheng,G.Yang,et al,Broadband diffusion of terahertz waves by multi-bit coding metasurfaces[J],Light Sci.Appl.3(10),e324(2015)
[10]闫昕,梁兰菊,张雅婷,丁欣,姚建铨.基于编码超表面的太赫兹宽频段雷达散射截面缩减的研究[J].物理学报,2015,15:463-470
[11]Grady N K,et al.Terahertz metamaterials for linear polarization conversion and anomalous refraction[J].Science,2013,340:1304-1307
[12]Gao X,Han X,Cao W P,et al.Ultrawideband and high-efficiency linear polarization converter based on double V-shaped metasurface[J].IEEE Trans.Antennas Propag.,2015,63(8):3522-3530