基于UC-EBG的吸波结构设计及其在微带天线中的应用  

Design of an Absorber Based on UC-EBG and its Application in Microstrip Antenna

作　　者：张浩[1] 曹祥玉[1] 杨欢欢[1] 赵一[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：《电讯技术》2013年第7期944-948,共5页Telecommunication Engineering

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(2010JZ010);陕西省自然科学基础研究项目(2012JM8003)~~

摘　　要：在共面紧凑型光子晶体结构(Uniplanar Compact Electromagnetic Bandgap,UC-EBG)基础上加载集总电阻,设计出一种新型吸波结构,并分析了其吸波原理。将其加载于微带天线,用于减缩天线带内雷达散射截面(Radar Cross Section,RCS)。仿真结果表明,在谐振频点,该吸波结构的吸波率达到99.8%。加载该结构后,天线的辐射性能基本保持不变,而对于垂直入射的TE波和TM波,其带内RCS分别减缩了26.22 dB和15.08 dB。实测结果与仿真结果较为吻合,证实了该结构可以减缩微带天线的带内RCS,从而提高其带内隐身性能。A novel absorber is proposed based on Uniplanar Compact Electromagnetic Bandgap（UC-EBG） with lumped resistance, and its operating mechanism is analyzed. The new absorber is loaded on rnierostrip antenna to reduce antenna＇s in-band Radar Cross Section（RCS）. The simulated result shows that its absorptivity reaches 99.8 % at operating frequency. The loaded antenna＇s radiation performance has not been influenced a lot, while for the incident wave of rITE and TM mode, the in-band RCS of antenna has declined by 26.22 dB and 15.08 dB respectively. There is a good agreement between measured and simulated results, which verifies that this ab- sorber can be used for reduction of antenna＇s in-band RCS so as to improve its in-band stealth performance.

关 键 词：微带天线 吸波结构 UC—EBG 带内隐身 RCS缩减 

分 类 号：TN82[电子电信—信息与通信工程]