摘要
给出了一种极化稳定、宽入射角、无表面损耗层的超薄超材料吸波体,并将其用于波导缝隙天线,降低天线带内雷达散射截面.理论分析与仿真、实测结果表明:该吸波体最大吸波率达99%,厚度仅为0.005 7λ,通过优化其在天线辐射缝隙周围的排列分布,使天线带内雷达散射截面在-21°至+21°角域减缩超过3dB,法线方向雷达散射截面减缩在13dB以上,同时天线增益提高了0.99dB.
An ultra-thin metamaterial absorber with polarization stability,a wide incident angle and no surface ullage layer is proposed and applied to the waveguide slot antenna to reduce its in-band Radar Cross Section（RCS）.Theoretical analysis,and simulation and experimental results demonstrate that the absorber can exhibit an absorption of 99 ％ with thickness of only 0.0057λ,that when applied to the waveguide slot antenna in an optimized distribution,it can reduce the in-band RCS of the antenna for more than 3 dB from -21°to ＋21°,that the largest reduction value exceeds 13dB in the normal direction,and that it can increase the gain by 0.99 dB.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2013年第5期130-134,共5页
Journal of Xidian University
基金
国家自然科学基金资助项目(61271100)
陕西省自然科学基金研究重点资助项目(2010JZ010)
陕西省自然科学基金资助项目(2012JM8003)
陕西省自然科学基础研究资助项目(SJ08-ZT06)
关键词
超薄超材料吸波体
波导缝隙天线
雷达散射截面
ultra-thin metamaterial absorber
waveguide slot antenna
radar cross section
