加载复合平面的缝隙天线RCS特性研究  

Study on RCS of slot antenna loaded composite surface

作　　者：谭渊[1] 袁乃昌[1] 杨勇[1] 付云起[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院微波中心,湖南长沙410073

出　　处：《系统工程与电子技术》2011年第10期2184-2187,共4页Systems Engineering and Electronics

基　　金：国家自然科学基金(60871069)资助课题

摘　　要：分析了人工磁导体和理想电导体复合表面对入射电磁波反射相位相差180°的特点。通过合理设计两个表面的比例,可以实现复合平面结构后向电磁散射的抑制。将该复合表面应用于缝隙天线的设计,达到了在不影响天线辐射效能的同时减少雷达反射截面积(radar cross-section,RCS)的目的。实测结果表明,加载复合表面的缝隙天线在设计频带内的RCS减少了10～15dB,进一步验证了复合平面对后向电磁散射的抑制效果。The character that the incident wave from the composite suriace combined by arrtificial magneuc conductor （AMC） and perfect electric conductor （PEC） has an 180° phase-shift is studied. By designing the pro portion of two surfaces, the composite surface will show obvious RCS reduction in backward direction. Then the composite surface is used on a slot antenna to reduce the RCS, and the radiation of the antenna will not be changed. The measured result shows that the RCS of antenna loaded composite surface reduces 10- 15 dB in tbe designed band, so the backward RCS reduction of the composite surface is validated.

关 键 词：缝隙天线 雷达反射截面积 人工磁导体 反射相位 

分 类 号：TN954.1[电子电信—信号与信息处理]