宽角覆盖多波束反射面天线设计  

Design of a Wide-angle Covering and Multiple-beam Reflector Antenna

作　　者：李保明[1] 常雷[1] 张建丰[1] 

机构地区：[1]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《通信对抗》2017年第2期36-40,共5页Communication Countermeasures

摘　　要：给出了一种双圆极化多波束反射面天线,具有高增益和宽角度覆盖的辐射特性。给出的天线由两部分组成:一个是以高效多模圆锥喇叭天线为单元组成的馈源阵,一个是侧馈双偏置卡塞格伦(SFOC)天线。馈源阵放置于反射面天线的焦平面,共有631个馈源,馈源阵采用蜂窝状布阵方式。该天线工作于Ku频段,工作带宽为13.3%,整个工作频段内可实现20°×9°的波束覆盖范围,在该范围内波束覆盖增益优于42dBic。In this paper, a dual-circular-polarized multi-beam reflector antenna is presented. The proposed antenna has the advantages of high-gain and wide-angle coverage. This antenna consists of two parts： a feed array using high-efficiency multimode horn antennas and a side-fed dual offset Cassegrain（SFOC） antenna. The feed array is placed on the focal plane of the reflector antenna, which contains 631 horns. The feed array adopts honeycomb-like structure. The antenna operates in the Ku band with fractional bandwidth of 13.3%. Within the entire working band, wide-angle coverage of 20° × 9° can be achieved, in which the gain is better than 42 dBic.

关 键 词：多波束 侧馈双偏置卡塞格伦天线 多模圆锥喇叭天线 圆极化 

分 类 号：TN82[电子电信—信息与通信工程]