一种Ka频段波束可捷变的低副瓣波导缝隙天线阵的设计  

A New Design of Low SLL Waveguide Aperture Antenna Array Working in Ka-band

作　　者：赵志强 孙全国 龙小专 ZHAO Zhi-qiang;SUN Quan-guo;LONG Xiao-zhuan(Science and Technology on Electronic Information Control Laboratory,Chengdu 610036,China)

机构地区：[1]电子信息控制重点实验室,成都610036

出　　处：《电子信息对抗技术》2018年第4期80-83,共4页Electronic Information Warfare Technology

摘　　要：在传统的波导缝隙天线阵的基础上,设计了一种波束可捷变的低副瓣波导缝隙天线阵。采用巧妙的布阵设计,通过对子阵、等功分不等功分器、和差网络的优化设计等,实现了高增益、低副瓣、波束可捷变等特性,并进行了容差分析。仿真结果表明,在35.75GHz±50MHz的频带内,窄波束增益≥34.7dB,窄波束副瓣≤-25.6dB,所设计的天线在宽、窄波束两种模式下均可获得较好的方向图特性。Based on the traditional waveguide aperture array,a new design of beam alterable low SLL waveguide aperture antenna array working in Ka-band is presented. Using artful array arrangement and optimization of sub-array,power divider,sum-difference network,the character of high gain,low SLL,beam alterable are obtained,and the tolerance analysis is presented. Simulation results indicate that in the bandwidth of 35. 75 GHz ± 50 MHz the gain of the narrow beam is no less than 34. 7 d B,the SLL of the narrow beam is less than-25. 6 d B. The antenna can attain good performance in wide beam and narrow beam mode.

关 键 词：波束可捷变 低副瓣 波导缝隙天线 

分 类 号：TN823.24[电子电信—信息与通信工程]