各向异性吸波结构在微带阵列天线隐身中的应用
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摘要
作为一种特殊的散射体,阵列天线的电磁散射往往会对整个武器平台的隐身性能产生严重影响,是现代隐身技术中难以解决的关键问题。本文首先对微带阵列天线电磁散射的来源及其抑制措施进行了分析,之后提出了一种各向异性吸波结构的设计及其在微带阵列天线中的加载配置方法,分别通过天线单元的匹配以及各向异性吸波结构实现了主极化RCS和交叉极化RCS的缩减,同时不影响微带天线阵列的辐射性能。
As one special electromagnetic scatterer, the electromagnetic scattering field of antenna array have a strong impact on the stealth performance of the weapons platform which is a key issues to be solved in the modern stealth technology. In this paper, the source of the electromagnetic scattering of antenna array and corresponding suppression measures are analyzed. And then, an anisotropic absorber which has different electromagnetic response in orthogonal direction is proposed to attain the radar cross-section(RCS) reduction of microstrip antenna array. The co-polarization and cross-polarization RCS reduciton of the microstrip antenna array are implemented by antenna matching and the anisotropic absorber, respectively, while the radiation performances of the microstrip antenna array are well kept.
As one special electromagnetic scatterer, the electromagnetic scattering field of antenna array have a strong impact on the stealth performance of the weapons platform which is a key issues to be solved in the modern stealth technology. In this paper, the source of the electromagnetic scattering of antenna array and corresponding suppression measures are analyzed. And then, an anisotropic absorber which has different electromagnetic response in orthogonal direction is proposed to attain the radar cross-section(RCS) reduction of microstrip antenna array. The co-polarization and cross-polarization RCS reduciton of the microstrip antenna array are implemented by antenna matching and the anisotropic absorber, respectively, while the radiation performances of the microstrip antenna array are well kept.
引文
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[2]李文惠,张介秋等.基于宽带吸波体的微带天线雷达散射截面缩减设计[J].物理学报,2015,8(64):084101.
[3]随赛,常红伟等.基于电阻型频率选择表面吸波体的低雷达散射截面微带天线设计[J].空军工程大学学报(自然科学版),2016,1(17):46-50.
[4]阮颖铮.雷达截面与隐身技术[M].北京:国防工业出版社,1998.
[5]Munk B.A.Finite Antenna Arrays and FSS[M].New York:John Wiley and Sons,2003.
[6]Alireza Kazemzadeh,Anders Karlsson.Multilayered Wideband Absorbers for Oblique Angle of Incidence[J].IEEE Trans.On Antennas and Propagation,2010,11(58):3637-3646.
[2]李文惠,张介秋等.基于宽带吸波体的微带天线雷达散射截面缩减设计[J].物理学报,2015,8(64):084101.
[3]随赛,常红伟等.基于电阻型频率选择表面吸波体的低雷达散射截面微带天线设计[J].空军工程大学学报(自然科学版),2016,1(17):46-50.
[4]阮颖铮.雷达截面与隐身技术[M].北京:国防工业出版社,1998.
[5]Munk B.A.Finite Antenna Arrays and FSS[M].New York:John Wiley and Sons,2003.
[6]Alireza Kazemzadeh,Anders Karlsson.Multilayered Wideband Absorbers for Oblique Angle of Incidence[J].IEEE Trans.On Antennas and Propagation,2010,11(58):3637-3646.