| 引用本文: | 毋召锋,徐延林,刘培国.超宽带强电磁防护能量选择表面设计.[J].国防科技大学学报,2023,45(3):179-185.[点击复制] |
| WU Zhaofeng,XU Yanlin,LIU Peiguo.Design of ultra-wideband energy selective surface for protection of high intensity EM fields[J].Journal of National University of Defense Technology,2023,45(3):179-185[点击复制] |
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| 超宽带强电磁防护能量选择表面设计 |
| 毋召锋,徐延林,刘培国 |
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(国防科技大学 电子科学学院, 湖南 长沙 410073)
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| 摘要: |
| 为应对强电磁脉冲对电子信息系统的威胁,设计了一种具备收发兼容特性的超宽带强电磁防护能量选择表面,有效拓展了能量选择表面的工作带宽和工作频率,可为L、S、C波段的超宽带用频装备提供不低于14 dB的防护效果。该能量选择表面是一种周期结构,每个单元包含一对箭头形结构和一个开关二极管,可根据外界辐照电磁波的能量密度自适应切换反射或透波状态,从而实现强电磁防护与工作信号收发兼容。仿真研究表明,这一新型能量选择表面在L、S、C波段的插入损耗小于1 dB,强电磁防护能力达到22 dB。在波导中对设计的样件进行了性能验证,结果显示,该样件在波导中的平均插入损耗为1 dB,防护能力达到了14 dB,初步验证了设计结构的低插入损耗和高防护特性。 |
| 关键词: 超材料 强电磁脉冲防护 能量选择表面 二极管阵列 超宽带 |
| DOI：10.11887/j.cn.202303020 |
| 投稿日期：2021-06-20 |
| 基金项目:国家自然科学基金资助项目(62101564)；湖南省自然科学基金资助项目(2022JJ20045) |
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| Design of ultra-wideband energy selective surface for protection of high intensity EM fields |
| WU Zhaofeng, XU Yanlin, LIU Peiguo |
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(College of Electronics Science and Technology, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| In order to deal with the threat of strong electromagnetic pulses to electronic information systems, an ultra-wideband strong ESS(energy selection surface) with transceiver compatibility was designed, which can effectively expand the operating bandwidth and frequency of the ESS, and can provide no less than 14 dB protection effect in L、S、C-band. The ESS was a periodic structure, with each unit containing a pair of arrow shaped structures and a switching diode. It can adaptively switch the reflection or transmission state according to the energy density of external irradiated electromagnetic waves, thereby achieving strong electromagnetic protection and compatibility with working signal transmission and reception. Simulation research shows that the insertion loss of this new ESS in the L、S、C band is less than 1 dB, and its protection effectiveness reaches 22 dB. Finally, the performance of the designed sample was verified in the waveguide. Results show that the average insertion loss of the sample in the waveguide is 1 dB, and the protection effectiveness reaches 14 dB, which preliminarily verifies the low insertion loss and high protection effectiveness of the designed structure. |
| Keywords: metamaterials strong electromagnetic pulse protection energy selective surface diode array ultra-wideband |
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