强激光与粒子束, 2019, 31 (10): 103222, 网络出版: 2019-10-14   

一种新型宽带吸收频率选择表面

Novel absorptive frequency selective surface with wideband absorbing properties
作者单位
中国人民解放军战略支援部队信息工程大学, 郑州 450002
摘要
提出了一种新型的频率选择表面, 该结构具有良好的高频透射性能和较低频带的宽带吸收性能。吸收频率选择表面结构由有损层和带通层组成。通过等效电路法的分析, 有损层应该在通带内产生并联谐振, 因此给出了具体的等效电路模型并在ADS中进行了验证。在有损层的设计中, 在金属交叉贴片中加载两个电阻使其分为两部分实现了并联谐振。带通层利用无损耗槽型频率选择表面实现。仿真结果表明, 在12.75 GHz时只有0.7 dB的插入损耗, 并且实现了4.8 GHz到11.2 GHz的宽带吸收。最后, 制作了实物并进行了测试, 实验结果与仿真结果吻合得很好。
Abstract
This paper presents a novel frequency selective surface with good transmissive property at high frequency and wideband absorption over lower band. The absorptive frequency selective surface structure is composed of a lossy layer and a bandpass layer. The analysis by the equivalent circuit method shows that the lossy layer should generate parallel resonance in the passband, so the specific equivalent circuit model is given and verified in Advanced Design System. In the design of the lossy layer, two lumped resistors are loaded into the metallic cross-type patch to divide it into two parts for parallel resonance. The bandpass layer is implemented using a lossless slot-type Frequency Selective Surface. The simulation results show that an insertion loss of 0.7 dB can be obtained at 12.75 GHz, and a wide absorption band from 4.8 GHz to 11.2 GHz is realized. A prototype was fabricated and tested, and the experimental results are in good agreement with the simulation results.
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强宇, 周东方, 刘起坤, 姚振宁. 一种新型宽带吸收频率选择表面[J]. 强激光与粒子束, 2019, 31(10): 103222. Qiang Yu, Zhou Dongfang, Liu Qikun, Yao Zhenning. Novel absorptive frequency selective surface with wideband absorbing properties[J]. High Power Laser and Particle Beams, 2019, 31(10): 103222.

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