对称双屏Butterworth型频率选择表面的设计

徐念喜; 冯晓国; 梁凤超; 王岩松; 高劲松

doi:10.3788/OPE.20111907.1486

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对称双屏Butterworth型频率选择表面的设计

现代应用光学 | 更新时间：2020-08-12

- 对称双屏Butterworth型频率选择表面的设计
- Design of symmetric dual Butterworth-type of frequency selective surfaces
- 光学精密工程 2011年19卷第7期页码：1486-1494
- 作者机构：
  
  1. 中国科学院研究生院北京,100039
  2. 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：
  
  中国科学院长春光学精密机械与物理研究所三期创新工程资助项目(No.093Y32J090)()
- DOI：10.3788/OPE.20111907.1486
  中图分类号： TN713;TN957
- 收稿日期：2010-12-31，
  
  修回日期：2011-01-25，
  
  网络出版日期：2011-07-25，
  
  纸质出版日期：2011-07-25
- 稿件说明：
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徐念喜, 冯晓国, 梁凤超, 王岩松, 高劲松. 对称双屏Butterworth型频率选择表面的设计[J]. 光学精密工程, 2011,19(7): 1486-1494

XU Nian-xi, FENG Xiao-guo, LIANG Feng-chao, WANG Yan-song, GAO Jin-song. Design of symmetric dual Butterworth-type of frequency selective surfaces[J]. Editorial Office of Optics and Precision Engineering, 2011,19(7): 1486-1494
徐念喜, 冯晓国, 梁凤超, 王岩松, 高劲松. 对称双屏Butterworth型频率选择表面的设计[J]. 光学精密工程, 2011,19(7): 1486-1494 DOI： 10.3788/OPE.20111907.1486.

XU Nian-xi, FENG Xiao-guo, LIANG Feng-chao, WANG Yan-song, GAO Jin-song. Design of symmetric dual Butterworth-type of frequency selective surfaces[J]. Editorial Office of Optics and Precision Engineering, 2011,19(7): 1486-1494 DOI： 10.3788/OPE.20111907.1486.

摘要

分析了对称双屏频率选择表面(FSS)结构如何实现Butterworth型FSS和获得 "平顶"和"陡截止"的 "矩形化"滤波特性。结合平面波展开法与互导纳法

给出了缝隙阵列导纳和缝隙阵列之间的互导纳。以Y孔形单元为例

数值计算并分析了FSS屏与中间电介质对Butterworth型FSS的影响;然后在500 mm500 mm聚酰亚胺基底镀15m铜膜

制作出Y孔型FSS并将其粘贴于介质两侧。用自由空间法测试其传输特性

测试结果与仿真结果基本一致。当中间电介质电厚度为2.15 mm

单元周期为7.2 mm6.235 2 mm

臂长为3.6 mm

臂宽为0.8 mm时

双屏FSS的互导纳与单屏FSS导纳的实部相等

从而得到Butterworth型FSS。当FSS单元周期增加0.6 mm

3 dB带宽由3.5 GHz缩减为2.1 GHz时

截止度增加。分析认为

对称双屏Butterworth型FSS的设计应遵循以下原则

即在满足谐振尺寸的前提下采用无加载孔径型单元且单元周期小于0.4

其缝隙长宽比应小于5.5

中间电介质电厚度约为0.1。

Abstract

This paper researches how to realize the Butterworth type Frequency Selective Surface(FSS) from a symmetric double screen FSS and to obtain the "rectangular" filter characteristics with "flat top" and "steep cut-off". Combined with the plane wave expansion and mutual admittance methods

the aperture array admittance and the mutual admittance between the arrays were given. Based on the method above

the effects of the FSS screen and the dielectrics media between the FSS screens on the Butterworth FSS were analyzed numerically by taking a common "Y" aperture for an example. Then

a single screen "Y" type FSS was fabricated and pasted on the both sides of media accurately by plating a copper film with thickness of 15 m on a 500 mm500 mm polyimide substrate. The free space method was used to test the transmission characteristics

and the simulation results are in good agreement with test ones. Furthermore

when the electrical thickness of the dielectric media was set to be in 2.15 mm

"Y" unit cell period in 7.2 mm6.235 2 mm

arm length in 3.6 mm

and the arm width in 0.8 mm

the mutual admittance of dual screen FSS is equal to the real part of admittance for a single-screen FSS. As a result

the Butterworth type FSS is obtained successfully. Experiments show that the designed Butterworth type FSS has reduced its -3 dB bandwidth from 3.5 GHz to 2.1 GHz when the cell circle is increased by 0.6 mm. Finally

it suggests that the design of Butterworth type FSS should be to adapt a no-load cell unit with a circle less than 0.4 on the assumption of resonant sizes

and its radio between gap length and width and the thickness of intermediate electric should be less than 5.5 and about 0.1

respectively.

关键词

Keywords

references

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