摘要
为使紧耦合阵列天线在超宽频带内实现电磁性能更佳、辐射性能更稳定的目的,提出一种新型条形频率选择表面宽角阻抗匹配层加载的双极化超宽带紧耦合阵列天线。通过高频仿真软件CST周期边界条件对阵列单元截断并进行研究分析。掌握阵元阻抗和辐射等电磁性能后,优化设计并加工出一个6×6单元的阵列天线进行实际测量。测量结果表明,该天线在2~12 GHz的频带内驻波比均小于3,驻波比带宽为10 GHz。带内辐射特性稳定,主瓣电磁能量集中,交叉极化小。工作频带内,最大增益可以达到13 dBi。该阵列天线可应用于超宽带相控阵天线领域中。
To achieve better electromagnetic characteristics and more stable radiation properties within an ultra-wide band,a novel dual-polarized ultra-wideband tightly coupled array antenna loaded with wide-angle impedance matching layer on a strip frequency selective surface was proposed.The array elements were studied and analyzed through the truncation by the periodic boundary conditions in high frequency electromagnetic simulation software CST.After investigating its electromagnetic properties of array impedance and radiation,a 6×6 array antenna was designed,manufactured for actual measurement.The measurement results show that the standing wave ratio of the antenna in the frequency band of 2~12 GHz is less than 3.The impedance bandwidth is 10 GHz.Moreover,the antenna has stable radiation within frequency band,more electromagnetic energy is concentrated in the mainlobe,and the cross polarization is small.In the operating frequency band,the maximum gain can reach 13 dBi.This kind of array antennas can be applied in the ultra-wideband phased array domain.
作者
吴微微
王少植
颜雨晨
方艺忠
袁乃昌
WU Weiwei;WANG Shaozhi;YAN Yuchen;FANG Yizhong;YUAN Naichang(Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Infomation System,National University of Defense Technology,Changsha 410073,China;State Key Laboratory of Experimental Physics and Computational Mathematics,Beijing Institute of Space Long March Vehicle,Beijing 100076,China)
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2023年第4期37-44,共8页
Journal of National University of Defense Technology
基金
国防科技基础加强计划技术领域基金资助项目(2022-JCJQ-JJ-0230)。
关键词
双极化
紧耦合
超宽带
频率选择表面
宽角阻抗匹配层
dual polarization
tight coupling
ultra-wideband
frequency selective surface
wide-angle impedance matching layer
