光子晶体在提高雷达收发隔离中的应用研究  

Application of Photonic Crystal in Radar to Improve Transmit-Receiver Isolation

作　　者：吕波[1] 郑秋容[1] 袁乃昌[1] 

机构地区：[1]国防科技大学四院微波技术发展中心,长沙410073

出　　处：《中国电子科学研究院学报》2007年第5期494-497,502,共5页Journal of China Academy of Electronics and Information Technology

摘　　要：光子晶体是一种具有频率禁带的新型周期结构,它独特的频率带隙特性使其具有广泛的应用前景。简单介绍了雷达收发隔离常用措施,将光子晶体高阻表面应用到收发隔离中,设计了一种用来改善雷达收发天线隔离度的高阻抗电磁表面结构,实测结果表明该结构改善收发隔离度达15 dB以上,效果显著。Photonic crystal is a new type periodic structure with frequency bandgaps, whose unique bandgap features bring about bright application prospect. Measures normally taken to improve the transmit receiver isolation are introduced in the paper. High impedance surface （HIS） is applied to radars. A structure of high impedance surface is designed to improve the performance of transmit receiver isolation. The experimental results show that the HIS could remarkably reduce transmit receiver mutual coupling up to 15 dB.

关 键 词：光子晶体 收发隔离度 测速雷达 

分 类 号：TN954.1[电子电信—信号与信息处理]