基于超材料的双频微带天线RCS减缩研究  

RCS Reduction Study of Dual- Band Microstrip Antenna Based on Metamaterial

作　　者：李振亚[1] 张建华[1] 杨文凯[1] 

机构地区：[1]电子工程学院,合肥230037

出　　处：《电子信息对抗技术》2015年第1期88-92,共5页Electronic Information Warfare Technology

摘　　要：针对双频微带天线的带内雷达散射截面减缩问题,提出了一种加载型微带天线。通过在贴片周围加载吸波超材料,天线的带内雷达散射截面得到有效减缩。该超材料吸波体仅由两层金属及其中间的有耗介质组成,底面金属不刻蚀,顶面由双环方形贴片组成。仿真结果表明:当天线周围加载吸波材料后,在保持天线辐射性能基本不变的情况下,双频带的雷达散射截面分别获得8.0d B和5.5d B的减缩。To solve the problem of dual-band microstrip antenna with the radar cross section re-duction, a loaded microstrip antenna is proposed. By loading absorbing matamaterial around the patch, the in-band RCS of the antenna is effectively reduced. The metamaterial absorber is only composed of two metallic layers separated by a lossy dielectric spacer. The top layer consists of double loop square patch and the bottom one is of a solid metal. Compared to the reference an-tenna, the simulated results show that the radiation performance of the antenna is unchanged when the absorbing metamaterial is used, and at the same time, at two operating frequencies, the simulated RCS of the antenna with metamaterial absorber are reduced 8 dB and 5 . 5 dB re-spectively.

关 键 词：超材料 雷达散射截面减缩 微带天线 双频带 

分 类 号：TN822[电子电信—信息与通信工程]