W波段全极化反射面天线  

A Reflector Antenna with All Polarizations at W Band

作　　者：李鑫[1] 李存龙[2] 袁健[1] 王元源[1] 王永华[1] Li Xin;Li Cunlong;Yuan Jian;Wang Yuanyuan;Wang Yonghua(Xi'an Electronic Engineering Research Institute,Xi'an 710100;National Key Laboratory of Science and Technology on Antennas and Microwaves,Xidian University,Xi'an,710071)

机构地区：[1]西安电子工程研究所,西安710100 [2]西安电子科技大学天线与微波技术国防科技重点实验室,西安710071

出　　处：《测控与通信》2020年第4期5-10,共6页

摘　　要：本文提出了1种W波段全极化反射面天线。天线采用卡塞格伦反射面的形式,通过隔板极化器同时产生左旋和右旋圆极化波,4个隔板极化器作为馈源产生初级辐射方向图照射副反。单脉冲馈电网络被安置在反射面后端对馈源进行激励,以缩短馈电路经、减小馈电损耗,可以同时产生左旋和、左旋方位差、左旋俯仰差及右旋和方向图。在W波段实现了9%的驻波带宽(VSWRV2),效率≥35%,副瓣≤-15dB,轴比<2.0的性能,可以满足导引头工程应用需求。A reflector antenna with all polarizations at W band is proposed in this paper.The Cassegrain reflector antenna is employed in this design,the left-hand circular polarity(LHCP)and the right-hand circular polarity(RHCP)is excited simultaneously and four clapboard polarizers is designed as the feed source to form the primary pattern to illuminate the vice-reflector of the antenna.The monopluse feed network is placed at the back of the main-reflector to reduce the feed path and the loss as while as produce the sum pattern with LHCP,the azimuth difference pattern with LHCP,the elevation difference pattern with LHCP and the sum pattern with RHCP simultaneously.The antenna can relize a 9%impedance bandwidth(VSER<2),more than 35%effiency,less than-15 dB side lobe level and less than 2.0 the axial ratio,which can be applicated in the seeker applications.

关 键 词：W波段 卡塞格伦 全极化 

分 类 号：TN8[电子电信—信息与通信工程]