一种锥型双频带通雷达罩的RCS及电性能分析  

Analysis of Electrical and RCS Performance of a Cone-type Dual-band Bandpass Radome

作　　者：侯新宇 黄智成 余丽丽[1] 张泽 柳泽林 HOU Xin-yu;HUANG Zhi-cheng;YU Li-li;ZHANG Ze;LIU Ze-lin(School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China)

机构地区：[1]上海大学材料科学与工程学院,上海200444

出　　处：《微波学报》2022年第4期41-44,共4页Journal of Microwaves

基　　金：装备预研军民融合联合基金(6141C03)。

摘　　要：文中介绍了一种双圆环结构的频率选择表面(FSS)锥型双频带通雷达天线罩的制造工艺及电性能测试。该天线罩底面直径500 mm,垂直高度321 mm,壁厚2 mm。采用热压罐固化成型技术制作样件。主要测试了该雷达天线罩在水平极化及垂直极化时,Ku频段(中心频点f_(0)=13.28 GHz)的功率传输系数及瞄准误差。最终实验结果表明,该天线罩在Ku波段设计频点f_(0)最小功率系数为75%;大于70%带宽达到1.1 GHz以上;在设计频点垂直极化下最大瞄准误差为18.87',水平极化下最大瞄准误差为11.37',小于20'带宽分别为0.5 GHz和1.3 GHz。说明天线罩在通带内的良好传输特性和通带外的良好截止特性,具有良好的瞄准性。同时,在HH/VV极化、前向±60°范围内,测量纯介质曲面样件和双频带通FSS曲面样件的雷达散射截面(RCS),结果表明,点频RCS均值都小于-10 dB,RCS缩减量均不小于10 dB。This paper describes the manufacturing process and electrical performance test of a cone-type dual-band bandpass radome with a frequency selective surface(FSS)of a dual-ring structure.The radome has a base diameter of 500 mm,a vertical height of 321mm and a wall thickness of 2 mm.Use autoclave curing molding technology to produce samples.The experiment mainly tests the power transmission coefficient and aiming error of the radome in Ku frequency band(central frequency point f_(0)=13.28 GHz)in horizontal polarization and vertical polarization.The final experimental results show that the minimum power coefficient of the radome is 75%at the design frequency point f_(0) in Ku band.More than 70%bandwidth reaches 1.1 GHz or above;The maximum line-of-sight error at the design frequency point is 18.87',the maximum line of sight error under horizontal polarization is 11.37',less than 20'bandwidth is 0.5 GHz and 1.3 GHz,respectively.It shows that the radome has good transmission characteristics in the passband and cut-off characteristics outside the passband,and has good aiming ability.Meanwhile,the radar cross sections(RCS)of pure media surface samples and dual-frequency band-pass FSS surface samples are measured in the range of HH/VV polarization and forward±60°.The test results show that the mean RCS of point frequency is less than-10 dB,and the RCS reduction is not less than 10 dB.

关 键 词：频率选择表面 瞄准误差 雷达截面积 功率传输系数 

分 类 号：TN713[电子电信—电路与系统] TN957