双频宽带大型微带反射阵天线设计  

Design on Double Frequency and Wide Band Microstrip Reflectarray Antenna

作　　者：李小秋[1,2] 郑雪飞[1,2] 杨成[1] 

机构地区：[1]南京电子技术研究所,南京210039 [2]天线与微波技术重点实验室,南京210013

出　　处：《微波学报》2012年第1期8-11,共4页Journal of Microwaves

基　　金："十一五"基础科研资助项目(C1320061102)

摘　　要：微带反射阵天线在性能上最主要的缺陷就是窄带,一般情况下其带宽小于5%,对电大口径短焦距馈电时更窄。本文设计并制作出一种由L波段和C波段两个反射面天线组成的6m×2m薄膜双频微带反射阵天线,两个频段的天线共用一层膜面。对该天线的电性能进行了测试,测试结果表明:该天线两个频段的相对带宽均大于10%(副瓣电平≤-18dB)。该天线具有折叠、可展开的结构特征,可以在卫星或航天器上广泛应用。The main limitation to microstrip reflectarray antenna performance is the narrow bandwidth. It is generally lower than 5 percent and even less for large microstrip reflectarray antenna. In this paper, the double frequency and wideband microstrip reflectarray antenna was designed, fabricated and tested, which comprised of an L waveband reflecting surface antenna and a C waveband reflecting surface antenna in a same plane. Testing results indicate that the frequency bandwidth can reach 10% for sidelobe level less than or equal to -18dB. The microstrip reflectarray antenna has the characteristics of easily folded and portability, which will be widely applied in satellite or spacecraft.

关 键 词：微带反射阵天线 双频 宽带 

分 类 号：TN822[电子电信—信息与通信工程]