基于超材料吸波体的低雷达散射截面微带天线设计
Acta Physica Sinica(2013)
Abstract
设计了一种高吸波率、宽入射角、无表面损耗层的超材料吸波体,并将其用于微带天线的带内雷达散射截面(radar cross section,RCS)减缩.实验结果表明:设计的吸波体的厚度为0.3mm,吸波率达99.9%,相比普通微带天线,加载该吸波体后的天线在工作频带内法向RCS减缩都在3dB以上,最大减缩16.7dB,单站RCS在-30°—+30°角域、双站RCS在-90°—+90°角域减缩超过3dB,且天线辐射性能保持不变.证实了该吸波体具有良好的吸波效果,可以应用于微带天线的带内隐身.
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Key words
radar cross section,microstrip antenna,metamaterial absorber
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