利用稀布设计低成本单脉冲天线  

Design of Monopulse Antenna of Low Cost by Thinning

作　　者：高初[1] 李刚[1] 

机构地区：[1]中国电子科技集团公司第38研究所,安徽合肥230031

出　　处：《现代电子技术》2009年第3期87-89,共3页Modern Electronics Technique

摘　　要：根据某单脉冲天线要求,设计了一个稀布阵相控阵天线。通过对圆口径满阵阵面均匀抽取,减小了约30%的单元。在此基础上对剩余单元进行了30 dB的Taylor加权和30 dB的Bayliss加权,分别实现了和波束和方位面及俯仰面差波束,并比较了稀布阵与满阵的和差波束的方向图。仿真结果显示,该稀布阵符合设计要求,其和差波束的副瓣均高于满阵副瓣约5 dB,和波束主瓣3 dB波束宽度接近于满阵指标。该方法有效地降低了单脉冲相控阵天线的成本。A phased array antenna implemented by thinning is presented according to a specific demand of a monopulse antenna. About 30% elements are saved by an evenly drew out from a circular aperture array. Then 30 dB Taylor weighting and 30 dB Bayliss weighting are applied to realize sum beam and difference beams in azimuth plane and elevation plane. And radiation patterns of sum beam and difference beams of thinned array and full array are compared. The simulation results show thinned array satisfies the demand. The maximum sidelobe levels of sum beam and difference beams are about 5 dB higher than that of full array. And the beamwidth of sum beam is close to that of full array. Thus thinning reduces the cost of monopulse phased array antenna effectively.

关 键 词：单脉冲天线 稀布阵 Taylor加权 Bayliss加权 

分 类 号：TN82[电子电信—信息与通信工程]