Y孔分形频率选择表面的设计

王珊珊; 高劲松; 冯晓国; 赵晶丽

doi:10.3788/OPE.20111905.0959

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Y孔分形频率选择表面的设计

现代应用光学 | 更新时间：2020-08-12

- Y孔分形频率选择表面的设计
- Design methods of Y aperture fractal FSS
- 光学精密工程 2011年19卷第5期页码：959-966
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,中国科学院光学系统先进制造技术重点实验室,吉林长春 130033
  2. 中国科学院研究生院,北京 100039
- 作者简介：
- 基金信息：
  
  中国科学院国防创新基金资助项目(No.CXJJ-149)();中国科学院优秀博士论文、院长奖获得者科研启动专项基金资助项目(No.076231J070)()
- DOI：10.3788/OPE.20111905.0959
  中图分类号： TN713;TN957
- 收稿日期：2010-05-31，
  
  修回日期：2010-08-13，
  
  网络出版日期：2011-05-26，
  
  纸质出版日期：2011-05-26
- 稿件说明：
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王珊珊, 高劲松, 冯晓国, 赵晶丽. Y孔分形频率选择表面的设计[J]. 光学精密工程, 2011,19(5): 959-966

WANG Shan-shan, GAO Jin-song, FENG Xiao-guo, ZHAO Jing-li. Design methods of Y aperture fractal FSS[J]. Editorial Office of Optics and Precision Engineering, 2011,19(5): 959-966
王珊珊, 高劲松, 冯晓国, 赵晶丽. Y孔分形频率选择表面的设计[J]. 光学精密工程, 2011,19(5): 959-966 DOI： 10.3788/OPE.20111905.0959.

WANG Shan-shan, GAO Jin-song, FENG Xiao-guo, ZHAO Jing-li. Design methods of Y aperture fractal FSS[J]. Editorial Office of Optics and Precision Engineering, 2011,19(5): 959-966 DOI： 10.3788/OPE.20111905.0959.

摘要

提出了将分形理论应用于频率选择表面(FSS)设计

以使单屏FSS具有多频谐振特性

进一步满足现代通信设备对多频带及集成化的要求。首先

以结构对称、抗交叉极化特性好的Y孔单元为例

经过递归、迭代产生二阶Y孔分形单元

给出计算单元几何分布的公式。然后

结合Floquet周期条件

应用全波周期矩量法得到描述FSS表面电流分布的电场积分方程

定量分析了入射电磁波在不同极化方式下Y孔分形FSS单元的极子长度、孔径宽度等结构参数及排布方式对其频率响应特性的影响。最后

采用成熟的镀膜、光刻工艺制备Y环分形FSS样件并在半电波暗室进行FSS传输特性测试。结果表明

在第一谐振波长的经验估算值约为0.79(4倍极子长度)

孔径宽度

由1 mm增至1.5 mm时

带宽展宽了650 MHz

角度稳定性对单元排布方式较敏感。得到的测试结果与数值结果一致

表明单屏分形FSS具有多频谐振的特性

其透过率及-3 dB带宽均可通过参数优化满足工程应用基本要求。

Abstract

The fractal elements were exploited to design single layer Frequency Selective Surfaces (FSSs) as multi-band pass filters to meet the multi-band and integration requirements of the communication apparatus.Firstly

the geometry expression of a Y aperture fractal FSS with a symmetry structure and anti-cross polarization was proposed by recursion and iterative operations. Then

combined with Floquet theory and the full-wave periodic moment method

an electric field integral equation to describe the current distribution of the FSS surface was obtained to quantitatively analyze the frequency response of the lattice and the structural parameters of Y aperture fractal FSS

such as pole length

aperture width

and the different polarizations of incident electromagnetic wave. Finally

a FSS sample was achieved by the photolithography and experiments in the anechoic chamber. Experimental results show that the estimation empirical constant is 0.79 for designing the resonant frequencies of FSS and the bandwidth expands to 650 MHz when the width of aperture varies from 1.0 mm to 1.5 mm.Moreover

the effects of incident angle is highly sensitive to the lattice of the periodic unit cell. Obtained results are well coincident with that of theoretical calculation

which means the single-layer fractal FSS with multiband characteristics can satisfy the engineering requirements after parameter optimization.

关键词

Keywords

references

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