基于分形的吸波材料及其在微带天线中的应用  

A Fractal Metamaterial Absorber and Its Application for Microstrip Antenna

作　　者：张浩[1] 曹祥玉[1] 高军[1] 杨欢欢[1] 郑秋容[1] 

机构地区：[1]空军工程大学信息与导航学院,西安710077

出　　处：《微波学报》2013年第4期57-61,共5页Journal of Microwaves

基　　金：国家自然科学基金资助项目(61271100);陕西省自然科学基础研究重点项目(No.2010JZ010);陕西省自然科学基础研究项目(No.2012JM8003);空军工程大学教研新星资助课题

摘　　要：在方形贴片完美吸波材料的基础上,通过Minkowski分形和开槽,设计了一种新型完美吸波材料,并分析了其吸波原理。将该材料加载于微带天线,用于减缩天线带内雷达散射截面(RCS)。仿真结果表明,相比于方形贴片吸波材料,设计材料的谐振频率下降了8.6%,最大吸波率达99.97%。加载该材料后,天线的辐射性能没有降低,而其带内RCS得到有效减缩。实测结果与仿真结果较为吻合,表明了该材料可以用于微带天线的带内隐身。A novel perfect metamaterial absorber（PMA） is proposed based on square-patch absorber by Minkowski fraction and slot, and the mechanism of absorber is analyzed. The new perfect metamaterial absorber is loaded on microstrip antenna in order to reduce antenna＇s in-band RCS. The simulated result shows that the operating frequency is reduced by 8.6% and the absorbance reaches 99.97%. The antenna performance has not been influenced, while the in-band RCS of the antenna has declined effectively. There is a good agreement between measured and simulated results showing that this materi- al can be used for microstrip antenna＇ s in-band stealth

关 键 词：微带天线 完美吸波材料 分形 开槽 雷达散射截面 

分 类 号：TN822[电子电信—信息与通信工程] TM25[一般工业技术—材料科学与工程]