不同槽线形式天线阵列的辐射及散射性能对比  

Comparison of Radiation and Scattering Performance of Antenna Arrays with Different Slot-Line Forms

作　　者：邱峰[1] 赵永库 孙永强 迟笑盟 宗显政[2] QIU Feng;ZHAO Yongku;SUN Yongqiang;CHI Xiaomeng;ZONG Xianzheng(The First Aircraft Design Institute of AVIC,Xi'an 710000 China;University of Electronic Science and Technology of China,Chengdu 611000 China)

机构地区：[1]中国航空工业集团公司西安飞机设计研究所,西安710000 [2]电子科技大学,成都611000

出　　处：《电光与控制》2025年第2期98-102,共5页Electronics Optics & Control

摘　　要：为实现具有相控阵功能的超宽带雷达,选用平衡式Vivaldi天线作为阵列单元,在周期边界条件下对Vivaldi天线阵列进行仿真,可以实现在4~12 GHz频带内E面、H面扫描角度均达到±60°,且有源驻波比均小于3。但基于介质基板的平衡式Vivaldi天线阵列剖面较高,不便于在空间有限的位置安装,因此设计了剖面更低的纯金属阶梯槽线天线。对三阶的纯金属阶梯槽线天线在周期边界条件下仿真,可以实现与平衡式Vivaldi天线一样的辐射性能。以6×6矩形网格阵列为例,对比两种天线的散射性能,纯金属阶梯槽线天线整体散射数值更低,在水平极化时具有明显优势。在三倍频的带宽内,纯金属阶梯槽线天线阵列有着与Vivaldi天线阵列相同的辐射性能,但前者天线剖面更低,结构强度更高,且在低散射性能上表现更加优秀。In order to realize the ultra-wideband radar with phased array function the balanced Vivaldi antenna is selected as the array unit and the Vivaldi antenna array is simulated under the cyclic boundary conditions which can realize the scanning angle of E-plane and H-plane in the frequency band of 4~12 GHz to reach±60°and the active standing wave ratio is less than 3.However the balanced Vivaldi antenna array based on dielectric substrate is not easy to be installed in space-limited locations because of its high profile.So a pure metal stepped slot-line antenna with lower profile is designed.The third order pure metal stepped slot-line antenna is simulated under the periodic boundary conditions and the same radiation performance as the balanced Vivaldi antenna can be realized.The scattering performance of the two antennas is compared with a 6×6 rectangular grid array as an example and the overall scattering value of the pure metal stepped slot-line antenna is lower which has a significant advantage in horizontal polarization.In the triple frequency bandwidth the pure metal stepped slot-line antenna array has the same radiation performance as the Vivaldi antenna array but the former antenna has a lower profile higher structural strength and better performance in low scattering performance.

关 键 词：VIVALDI天线 阶梯槽线天线 超宽带 天线散射 

分 类 号：TN820.15[电子电信—信息与通信工程]