【作者】 汪剑波； 卢俊； 陈新邑； 孙连春；

【Author】 WANG Jian-bo~1,LU Jun~1,CHEN Xin-yi~1,SUN Lian-chun~2 (1.School of Science,Changchun University of Science and Technology,Changchun 130022,China; 2.Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences, Changchun 130000,China)

【机构】 长春理工大学理学院； 中国科学院长春光学精密机械与物理研究所；

【摘要】 使用复合频率选择表面的雷达吸波材料是一种实现军事目标对探测雷达波隐身的有效手段。通过设计了十字单元频率选择表面,利用谱域法对包含有十字单元FSS的吸波材料进行数值模拟,计算出频率为2～16GHz微波波段的反射系数,并通过调整单元间距研究排列周期对吸波特性的影响。计算结果表明,十字单元FSS拓展了吸波材料带宽,降低了共振频率的反射率;并且吸波材料带宽随单元排列周期增加而增大,共振频率向高频漂移,当单元间距为10mm时,复合结构具有较强的吸波能力,其反射率为22cB,-8dB带宽为1.76GHz。更多还原

【Abstract】 Complex FSS’s radar absorbing material is used as an effective means to stealth military objective from radar detection.Cross-unit FSS is designed in this paper and the absorbing material containing cross-unit FSS is numerically simulated by means of spectral domain approach.The reflection coefficient of microwave band at frequency 2-16GHz has been calculated and the influence of arrangement cycles on absorbing characteristics has been studied by adjusting unit spacing.The results show that cross-unit FSS expands absorbing materials’ bandwidth and decreases resonance frequency’s reflectivity.Meanwhile,the absorbing material’s bandwidth expands with the expansion of unit arrangement cycles and the resonance frequency drifts towards to high frequency.When unit spacing is 10mm,complex structure has greater absorbing ability with 22dB reflectivity and 1.76GHz -8dB bandwidth.更多还原