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一种适用于雷达罩的频率选择表面新单元研究
引用本文:李小秋,高劲松,赵晶丽,孙连春.一种适用于雷达罩的频率选择表面新单元研究[J].物理学报,2008,57(6):3803-3806.
作者姓名:李小秋  高劲松  赵晶丽  孙连春
作者单位:(1)中国科学院长春光学精密机械与物理研究所,长春 130033; (2)中国科学院研究生院,北京 100049
基金项目:中国科学院知识创新工程领域前沿项目(批准号:20063004)资助的课题.
摘    要:从传统的频率选择选择表面(frequency selective surface,简称FSS)Y孔单元出发,提出了一种新单元.经优化设计,给出了Y孔单元和新单元的FSS结构参数,运用谱域Galerkin法对两种单元FSS的传输特性进行了数值计算.采用镀膜和光刻技术制作出相应的等效平板样件,在微波暗室对两种FSS等效平板在8—12GHz频段内的传输特性进行了测试,测试值与计算值基本一致.结果表明:与Y孔单元相比,新单元FSS在电磁波大角度(66°)入射时具有高的透过率,在电磁波大扫描角范围内(0°—66°)新单元FSS中心频率的漂移量更小.因此,所提出的新单元更适合于电磁波大角度入射下的应用,为FSS在曲面雷达罩上的应用提供了一种新单元. 关键词: 频率选择表面 中心频率 雷达罩

关 键 词:频率选择表面  中心频率  雷达罩
收稿时间:2007-12-30

A novel element of frequency selective surface for radome
Li Xiao-Qiu,Gao Jin-Song,Zhao Jing-Li,Sun Lian-Chun.A novel element of frequency selective surface for radome[J].Acta Physica Sinica,2008,57(6):3803-3806.
Authors:Li Xiao-Qiu  Gao Jin-Song  Zhao Jing-Li  Sun Lian-Chun
Abstract:Based on the Y element, a novel element for the Frequency selective surface (FSS) is presented in this paper. The transmission characteristics of Y element FSS and the novel element FSS is calculated using Galerkin's method in the spectral domain, and the optimum parameters of the FSS is obtained. The corresponding equivalent FSS sample plate was fabricated. It's transmission characteristics were measured by microwave network analyzer at 8—12GHz. The agreement between the calculated and measured values was good. The results show that, the novel element FSS has excellent transmission characteristic at large-angle incidence, the transmission coefficient is -052dB at TE 66° incidence. From 0° to 66° TE incidence, the drift of the resonant frequency is 200MHz. Meanwhile the transmission coefficient of Y element FSS is -082dB at TE 66° incidence, and from 0° to 66° TE incidence, the drift of the resonant frequency is 400MHz. Therefore, the novel element FSS is more suitable than Y element FSS for the application in large-angle incidence curved streamlined radome.
Keywords:frequency selective surface  resonant frequency  radome
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