基于电容性膜板加载的新型雷达宽带隔离设计  

Novel Design of Wide-band Isolation Based on Capacitive Clapboard

作　　者：黄敬健[1] 杨勇[1] 谭渊[1] 袁乃昌[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,湖南长沙410073

出　　处：《兵工学报》2012年第5期579-582,共4页Acta Armamentarii

摘　　要：针对一般的连续波雷达收发天线隔离问题,提出了一种基于多路径结构对消的新型方法来提高隔离度。通过分析加载容性膜板的波纹波导中相位偏移,将波纹结构加载应用于连续波雷达收发天线之间,使得多路径到达接收天线的电磁波在特定频带内对消形成零点。CST建模仿真和实验结果证明:加载合适的膜板,可以使得收发天线在400 MHz的带宽能达到-80 dB以下的隔离度;并且该方法结构简单,成本低,具有很大的应用价值。For the isolation problem of transmitting-receiving antenna in continuous wave radar,the phase offset in ripple wave-guild with capacitive clapboard was analyzed,the ripple structure was used to improve the isolation of antenna,and a new method was proposed to improve the isolation of transmitting-receiving antenna based on structure counteraction.CST simulation and experimental results show that this method is able to make the isolation reach-80 dB in 400 MHz band.So it has a very huge application value because of its simple structure and low cost.

关 键 词：电子技术 宽带隔离 膜板加载 相移 

分 类 号：TN95[电子电信—信号与信息处理]