基于HFSS的Salisbury屏散射特性仿真分析
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摘要
Salisbury屏可有效降低目标反射率,具有一些独特的电磁散射特性。在阐述Salisbury屏原理的基础上,给出其反射性能曲线和近似的单站RCS物理光学解释,运用HFSS软件对Salisbury屏进行仿真分析,给出多种典型结果,并与金属平板的散射特性对比,进而分析关键参数对其后向RCS影响。结果表明,若入射波频率、阻抗层和导体背板间的距离及填充介质确定,影响其散射特性的主要因素为自身尺寸和电磁波入射角,通过巧妙设计,可望使Salisbury屏在目标特征变换、电子对抗等领域有更广的应用前景。
The Salisbury screen has some unique electromagnetic scattering characteristics which is proved effective in reducing reflectivity of targets. After the principles of Salisbury screen are expounded,its reflectivity performance curve and mono-static RCS computed by physical optics method are showed. The characteristics of the Salisbury screen are anaylzed in HFSS software,and some typical experimental results are obtained,furthermore,compared with the scattering characteristics of metal slabs,the influence of key factors on the mono-static RCS of Salisbury screen is analyzed. The results show if the incident frequency,the separation distance between impedance sheet and conductor surface,the materials filled in the Salisbury screen are definitive,the electromagnetic scattering characteristics of Salisbury screen is mainly influenced by size itself and incident angle of electromagnetic wave. If designed appropriately,the Salisbury screen is expected a very wide application foreground in target signature transform and electronic warfare and other areas.
The Salisbury screen has some unique electromagnetic scattering characteristics which is proved effective in reducing reflectivity of targets. After the principles of Salisbury screen are expounded,its reflectivity performance curve and mono-static RCS computed by physical optics method are showed. The characteristics of the Salisbury screen are anaylzed in HFSS software,and some typical experimental results are obtained,furthermore,compared with the scattering characteristics of metal slabs,the influence of key factors on the mono-static RCS of Salisbury screen is analyzed. The results show if the incident frequency,the separation distance between impedance sheet and conductor surface,the materials filled in the Salisbury screen are definitive,the electromagnetic scattering characteristics of Salisbury screen is mainly influenced by size itself and incident angle of electromagnetic wave. If designed appropriately,the Salisbury screen is expected a very wide application foreground in target signature transform and electronic warfare and other areas.
引文
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[2]熊勇.基于相位调制表面的雷达吸波材料的电磁特性研究[D].南京:南京航空航天大学,2008:6-7.
[3]FANTE R L,MCCORMACK M T.Reflection Properties of the Salisbury Screen[J].IEEE Transactions Antennas and Propagation,1988,36(10):1443-1454.
[4]CHAMBERS B.Frequency Tuning Characteristics of Capacitively Loaded Salisbury Screen Radar Absorber[J].Electronics Letters,1994,30(19):1626-1628.
[5]CHAMBERS B.Optimum Design of A Salisbury Screen Radar Absorbers[J].Electronics Letters,1994,30(16):1353-1354.
[6]LEDERERP G.Modeling of Practical Salisbury Screen Absorbers[J].IEE Colloquium on Low Profile Absorbers and Scatters,1992(1):1-4.
[7]张猛,江田.阻抗型频率选择表面电磁吸波结构的设计及测量[J].电子测量技术,2014,37(8):7-9.
[8]王东方,周忠祥.Salisbury的优化设计[J].哈尔滨工业大学学报,2004,36(11):1499-1501.
[9]黄培康,殷红成,许小剑.雷达目标特性[M].北京:电子工业出版社,2010:1-10.
[10]HAUPT R L.Scattering From Small Salisbury Screens[J].IEEE Trans Antennas and Propagation,2006,54(6):1807-1810.
[11]黄培康.雷达目标特征信号[M].北京:中国宇航出版社,2009:42-45.
[12]谢拥军,刘莹,李磊,等.HFSS原理与工程应用[M].北京:科学出版社,2014:123-124.
[13]党可征,时家明.基于高阻抗表面的多频带Salisbury屏设计[J].物理学报,2015,64(11):114101(1)-114101(6).
[14]CHE S F,CAHILL R,FUSCO V F.Design of A Salisbury Screen Absorber Using Frequency Selective Surfaces to Improve Bandwidth and Angular Stability Performance[J].IET Microwaves,Antennas and Propagation,2011,5(2):149-156.
[15]CHE S F,CAHILL R,FUSCO V F.Performance Enhancement of Salisbury Screen Absorber Using A Resistively Loaded High Impedance Ground Plane[C]//Proceeding of the Fourth European Conference on Antennas and Propagation,2010:1-5.
[2]熊勇.基于相位调制表面的雷达吸波材料的电磁特性研究[D].南京:南京航空航天大学,2008:6-7.
[3]FANTE R L,MCCORMACK M T.Reflection Properties of the Salisbury Screen[J].IEEE Transactions Antennas and Propagation,1988,36(10):1443-1454.
[4]CHAMBERS B.Frequency Tuning Characteristics of Capacitively Loaded Salisbury Screen Radar Absorber[J].Electronics Letters,1994,30(19):1626-1628.
[5]CHAMBERS B.Optimum Design of A Salisbury Screen Radar Absorbers[J].Electronics Letters,1994,30(16):1353-1354.
[6]LEDERERP G.Modeling of Practical Salisbury Screen Absorbers[J].IEE Colloquium on Low Profile Absorbers and Scatters,1992(1):1-4.
[7]张猛,江田.阻抗型频率选择表面电磁吸波结构的设计及测量[J].电子测量技术,2014,37(8):7-9.
[8]王东方,周忠祥.Salisbury的优化设计[J].哈尔滨工业大学学报,2004,36(11):1499-1501.
[9]黄培康,殷红成,许小剑.雷达目标特性[M].北京:电子工业出版社,2010:1-10.
[10]HAUPT R L.Scattering From Small Salisbury Screens[J].IEEE Trans Antennas and Propagation,2006,54(6):1807-1810.
[11]黄培康.雷达目标特征信号[M].北京:中国宇航出版社,2009:42-45.
[12]谢拥军,刘莹,李磊,等.HFSS原理与工程应用[M].北京:科学出版社,2014:123-124.
[13]党可征,时家明.基于高阻抗表面的多频带Salisbury屏设计[J].物理学报,2015,64(11):114101(1)-114101(6).
[14]CHE S F,CAHILL R,FUSCO V F.Design of A Salisbury Screen Absorber Using Frequency Selective Surfaces to Improve Bandwidth and Angular Stability Performance[J].IET Microwaves,Antennas and Propagation,2011,5(2):149-156.
[15]CHE S F,CAHILL R,FUSCO V F.Performance Enhancement of Salisbury Screen Absorber Using A Resistively Loaded High Impedance Ground Plane[C]//Proceeding of the Fourth European Conference on Antennas and Propagation,2010:1-5.