基于频率选择表面的双大气窗口红外隐身
投稿时间:2018-08-02  修订日期:2018-10-09  点此下载全文
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作者单位E-mail
徐翠莲 基础部, 空军工程大学 xucuilian2001@163.com 
屈绍波 基础部  
庞永强 空军工程大学  
王甲富 空军工程大学  
闫明宝 空军工程大学  
王雯洁 空军工程大学  
马华 空军工程大学  
王爱霞 空军工程大学  
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:为实现双大气窗口红外隐身,本文提出了一种新型双阻带频率选择表面(FSS)。 该结构由三层材料组成,金属四个多路交叉十字型谐振器,金属井字型结构,中间由介质层隔开。仿真结果表明,对于垂直入射波,所提出的双阻带FSS在两个大气窗(3.0-5.0μm和8.0-14.0μm)内具有较高的反射率,并且透射率被压制到0.1以下。研究了入射角、极化角,周期大小及介质厚度对反射率和透射率的影响。在φ= 0°时,TE和TM波在的宽入射角θ范围内均显示出良好的传输稳定性。通过FFS在谐振频点的电场及表面电流的分析结果发现,3.0-5.0μm的反射是由于电谐振引起的而 8.0-14.0μm的高反射是由于磁谐振引起的。
中文关键词:红外隐身,频率选择表面,红外辐射抑制
 
Dual atmospheric windows infrared stealth based on frequency selective surface
Abstract:In this paper, a novel and simple design of dual-stop-band frequency selective surface (FSS) for infrared stealth applications is investigated. The designed structure consists of three layers, metallic four multiplexed cross resonators located at the front and metal well structure at the back separated by a dielectric layer. The simulated results show that the proposed dual-stop-band FSS has high reflectivity in the two atmospheric windows (3.0-5.0μm and 8.0-14.0μm) for normal incidence waves, and the transmissvity is suppressed completely under 0.1. The effects of incident angle, polarization angle, period size and dielectric thickness on reflectivity and transmittance were investigated. the proposed structure also shows good transmission stability in a wide range of incident angles θ for both TE and TM incidences at azimuthal angle φ = 0°. Moreover, we demonstrate that such structure has good transmission stability for a wide range of azimuthal angles due to four-fold rotational symmetry of the designed unit cell. The principle of the resonant the proposed structure is formed not only by the electric resonance but also by the magnetic resonance.
keywords:infrared stealth,frequency selective Surface, infrared radiation suppression
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