A frequency-selective surface structure arbitrarily switched between band-pass and band-stop responses at low frequency

Yang XU; Nian-xi XU; Dong-zhi SHAN; Nai-tao SONG

doi:10.3788/OPE.20182601.0142

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A frequency-selective surface structure arbitrarily switched between band-pass and band-stop responses at low frequency

Micro/Nano Technology and Fine Mechanics | 更新时间：2020-08-13

- A frequency-selective surface structure arbitrarily switched between band-pass and band-stop responses at low frequency
- Optics and Precision Engineering Vol. 26, Issue 1, Pages: 142-149(2018)
- 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.中国科学院大学, 北京 100039
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20182601.0142
  CLC： TN957;TN761
- Received：25 October 2016，
  
  Accepted：24 November 2016，
  
  Published：25 January 2018
- 稿件说明：
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Yang XU, Nian-xi XU, Dong-zhi SHAN, et al. A frequency-selective surface structure arbitrarily switched between band-pass and band-stop responses at low frequency[J]. Optics and precision engineering, 2018, 26(1): 142-149.
DOI：

Yang XU, Nian-xi XU, Dong-zhi SHAN, et al. A frequency-selective surface structure arbitrarily switched between band-pass and band-stop responses at low frequency[J]. Optics and precision engineering, 2018, 26(1): 142-149. DOI： 10.3788/OPE.20182601.0142.

摘要

为了在不同时域下获得兼具带通与带阻空间滤波功能的低频频率选择表面（FSS），提出了一种带通与带阻型FSS可自由切换的设计方法，即在基于卷曲技术设计的小型化FSS表面上贴装电控PIN二极管，并利用"场-路"协同仿真的方法进行建模与计算。其中，卷曲图案既是滤波结构，也是馈电导线。当PIN二极管导通时，卷曲图案缝隙处产生的电容

与金属贴片电感

构成并联LC回路，FSS表现为带通滤波功能；反之，焊盘处缝隙及反偏PIN二极管产生的电容

与金属贴片电感

串联，FSS切换为带阻滤波功能。采用印刷线路板及表面贴装工艺制作出了400 mm×400 mm试验样件并采用自由空间法进行测试，仿真与测试结果表明：在2.45 GHz处，当PIN二极管导通时，FSS表现为强透射性能，反之则表现出强反射效果。这种基于电控PIN二极管开关所实现的带通与带阻型FSS自由切换方法在通信、电磁屏蔽及雷达隐身等领域具有广阔的应用前景。

Abstract

To obtain a frequency-selective surface (FSS) structure with band-pass and band-stop spatial filtering functions at low frequency in different time domains

a design method for switching between band-pass and band-stop responses of the FSS was proposed. It was consisted of mounting PIN diodes on the miniaturized FSS

which was designed based on a convolution technique

and utilizing EM/Circuit Co-Simulation for calculations and analysis. It was noteworthy that the convoluted pattern was not only the filtering structure

but also serves as the feeder. When PIN diodes were in the ON-state

the parallel LC circuit constituted by the inductance

of the metallic patches and the capacitance

of the pattern slots represents the band-pass performance of the FSS. Conversely

the total capacitance

of the reversed PIN diodes and the gap between the pads in series with the inductance

of the metallic patches indicate the occurrence of band-stop performance for the FSS when the PIN diodes are in the OFF-state. Using a printed circuit board and surface mounting technology

a prototype of 400 mm×400 mm was fabricated and measured by the free space method. The simulation and test results indicate that

for a frequency of 2.45 GHz

the FSS exhibits strong transmission when the PIN diodes are in the ON-state

whereas a strong reflection is obtained when the PIN diodes are in the OFF-state. With this method

arbitrary switching of the FSS between band-pass and band-stop responses is realized

based on electrically controlled PIN diodes

which has a broad range of prospective applications in the fields of telecommunication

electromagnetic shielding

and radar stealth.

关键词

Keywords

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Related Institution

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

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Graduate School of the Chinese Academy of Sciences

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