Design of overlapping Y loop element FSS

CHEN Xin; GAO Jin-song; WANG Yan-song; FENG Xiao-guo; LIANG Feng-chao

doi:10.3788/OPE.20111909.2043

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Design of overlapping Y loop element FSS

Article | 更新时间：2020-08-12

- Design of overlapping Y loop element FSS
- Optics and Precision Engineering Vol. 19, Issue 9, Pages: 2043-2049(2011)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20111909.2043
  CLC： TN713;TN957
- Received：25 September 2010，
  
  Revised：29 January 2011，
  
  Published Online：26 September 2011，
  
  Published：26 September 2011
- 稿件说明：
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陈新, 高劲松, 王岩松, 冯晓国, 梁凤超. 叠加Y环单元频率选择表面的设计[J]. 光学精密工程, 2011,19(9): 2043-2049

CHEN Xin, GAO Jin-song, WANG Yan-song, FENG Xiao-guo, LIANG Feng-chao. Design of overlapping Y loop element FSS[J]. Editorial Office of Optics and Precision Engineering, 2011,19(9): 2043-2049
陈新, 高劲松, 王岩松, 冯晓国, 梁凤超. 叠加Y环单元频率选择表面的设计[J]. 光学精密工程, 2011,19(9): 2043-2049 DOI： 10.3788/OPE.20111909.2043.

CHEN Xin, GAO Jin-song, WANG Yan-song, FENG Xiao-guo, LIANG Feng-chao. Design of overlapping Y loop element FSS[J]. Editorial Office of Optics and Precision Engineering, 2011,19(9): 2043-2049 DOI： 10.3788/OPE.20111909.2043.

摘要

对Y环单元进行改造得到了叠加Y环单元图形

以延迟频率选择表面(FSS)的高次谐振

实现无干扰的单通带滤波器。运用谱域法分析得到的叠加Y环单元

并与Y环单元进行对比

分别讨论其角度稳定性、极化稳定性、-3 dB带宽和高次谐振点。分析表明:当中心频点同为17.6 GHz时

叠加Y环单元具有更窄的带宽

而高次谐波向后延迟6.5 GHz

并保证了良好的极化稳定性和角度稳定性。叠加Y环单元臂长从2.78 mm增大到3.18 mm时

中心频率从17.6 GHz下降到14.1 GHz;臂宽从1.1 mm增大到1.5 mm时

中心频率从17.6 GHz提高到20.6 GHz

带宽变大;单元间距从7.2 mm增加到8 mm时

带宽从4.5 GHz减小到3.5 GHz

中心频点不变;缝隙宽度增大时

带宽变大

中心频点升高。在微波暗室中对叠加Y环单元FSS进行测试

结果与预期一致。结果表明

叠加Y环单元在保证角度稳定性与极化稳定性前提下

能够延迟高次谐振点

为工作频段内实现单通带滤波器提供了新的思路。

Abstract

An overlapping Y loop element Frequency Selective Surface(FSS) based on traditional Y loop elements was designed to delay the high harmonics of FSS in a working band and to achieve the single-pass band filter.By using the spectrum domain approach

the new element was analyzed and compared with the traditional Y loop elements.The affect of different incidence angles on the center frequency

-3 dB bandwidth and the limitation ability for the high harmonics under TE and TM incidence waves was discussed. The results show that the new element FSS owns the good stability under different incidence angles and polarizations. In the same resonant frequency of 17.6 GHz

the overlapping Y loop element possesses the narrower bandwidth than Y loop element

and its high harmonics delays for 6.5 GHz. When the length of the arm grows from 2.78 mm to 3.18 mm

the center fre quency descends from 17.6 GHz to 14.1 GHz; When the width of the arm grows from 1.1 mm to 1.5 mm

the center frequency rises from 17.6 GHz to 20.6 GHz and the bandwidth is widened at the same time.Furthermore

when the space between the elements increases from 7.2 mm to 8 mm

the bandwidth narrows down from 4.5 GHz to 3.5 GHz with a stable center frequency. The overlapping Y loop element FSS was tested in a microwave darkroom.By comparing with a calculation

the measured curve is good agreement with the calculated one.Obtained results show that the overlapping Y loop element can delay high harmonics in good stability for incidency angles and polarizations and provides a new idea for achieving the single-pass band filter in the working band.

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references

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Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences

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