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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.
A metamaterial wave absorber with high absorption rate, wide angle of incidence and no surface loss layer was designed and used to reduce the in-band radar cross section (RCS) of the microstrip antenna.The experimental results show that : The design of the absorber body thickness of 0.3mm, the absorption rate of 99.9%, compared to the ordinary microstrip antenna, the antenna after loading the absorber in the working band normal RCS reduction in 3dB above the maximum reduction of 16.7 dB, the single-station RCS is in the -30 ° - + 30 ° angle range, the double-station RCS is reduced by more than 3dB in the -90 ° - + 90 ° angle range, and the antenna radiation performance remains unchanged. Wave absorption effect, can be used in microstrip antenna in-band stealth.