基于HIS的低剖面宽角扫描相控阵天线设计  

Design of Low Profile Wide Angle Scanning Phased Array Antenna Based on HIS

作　　者：梁静[1,2] 张冰 张华[4] 任建 Liang Jing;Zhang Bing;Zhang Hua;Ren Jian(China Airborne Missile Academy,Luoyang 471009,China;Aviation Key Laboratory of Science and Technology on Airborne Guided Weapons,Luoyang 471009,China;National Key Laboratory Antennas and Microwave Technology,Xidian University,Xi’an 712000,China;The First Military Representative Office of Air Force Equipment Department in Luoyang,Luoyang 471009,China)

机构地区：[1]中国空空导弹研究院,河南洛阳471009 [2]航空制导武器航空科技重点实验室,河南洛阳471009 [3]西安电子科技大学天线与微波技术重点实验室,西安712000 [4]空装驻洛阳地区第一军事代表室,河南洛阳471009

出　　处：《航空兵器》2022年第3期101-106,共6页Aero Weaponry

摘　　要：本文设计了工作于1.9~3.2 GHz的宽波束宽带蝶形偶极子,增加四分之一波长短路柱,改善匹配拓展阻抗带宽,将蝶形偶极子组成一维八元线阵,研究波束扫描角度和阻抗带宽。此外,设计了一种矩形HIS(High Impedance Surface)单元并研究其带隙与同相反射特性。将HIS加载到阵列上,利用HIS的同相反射特性降低其剖面高度。同时,由于HIS对表面波的影响,将相控阵的扫描角度进一步拓展。结果表明,加载HIS比未加载HIS相控阵扫描至±60°时的主瓣增益和副瓣电平分别提高了3 dB和12 dB,并且交叉极化鉴别率XPD(Cross Polarization Discrimination)可以提高13 dB,加载HIS的相控阵在主瓣增益下降3 dB以内可以达到±65°的扫描角度。In this paper,a wide beam wideband butterfly dipole operating at 1.9~3.2 GHz is proposed.A quarter wave long short comlumn is added to improve the matching and to expand the impedance bandwidth.One-dimension eight elements linear array is formed with butterfly dipole to study the beam scanning angle and impedance bandwidth.In addition,a rectangular HIS(high impedance surface)element is designed and its band gap and in-phase reflection characteristics are studied.Loading HIS on the array,the profile height is greatly reduced by utilizing the in-phase reflection characteristic of HIS.At the same time,due to the influence of HIS on the surface wave,the scanning angle of phased array can be further expanded.The results show that the gain of main lobe and the level of sidelobe are increased by 3 dB and 12 dB respectively when the phased array is scanned to±60°with HIS,and the XPD(cross polarization discrimination)can be increased by 13 dB,the scanning angle of the phased array with HIS can reach±65°when the main lobe gain decreases by 3 dB.

关 键 词：HIS 宽带偶极子 高阻抗表面 同相反射 主瓣增益 副瓣电平 相控阵天线 

分 类 号：TJ765.1[兵器科学与技术—武器系统与运用工程] TN821.8[电子电信—信息与通信工程]