摘要
随着多功能、一体化电子信息装备的快速发展,对超宽带阵列天线的需求也愈加迫切.机载、舰载等平台对载荷的重量、尺寸等往往有较为严格的限制,低剖面、轻量化超宽带相控阵天线的设计可以有效解决平台限制与多功能需求之间的矛盾.本文提出了一种基于紧耦合偶极子天线单元的低剖面、轻量化超宽带阵列天线设计方案,该天线采用寄生偶极子匹配层和频率选择表面(frequency selective surface,FSS)匹配层代替传统的介质宽角阻抗匹配层,在实现宽角扫描的同时还能有效减小天线重量.通过电磁仿真优化,该阵列天线单元可以实现6∶1的工作带宽,剖面高度小于低频的十分之一波长;E面±60°扫描满足电压驻波比(voltage standing wave ratio,VSWR)≤3,H面±45°扫描满足VSWR≤3.5.为了验证所设计阵列天线的性能,加工了规模大小为16×16的原理样机进行实测,测量结果与仿真结果基本吻合.
With the rapid development of multi-functional and integrated electronic information equipment,the demand for ultra wideband array antenna is becoming more and more urgent.However,airborne and ship borne platforms often have strict restrictions on the weight and size of the load.The design of low profile,lightweight ultra wideband phased array antenna can effectively solve the contradiction between platform constraints and multi-functional requirements.In this paper,a low-profile,light weight ultra wideband array antenna design scheme based on tightly coupled dipole antenna element is proposed.The antenna uses parasitic dipole matching layer and frequency selective surface(FSS)matching layer to replace the traditional dielectric wide-angle impedance matching layer,which can effectively reduce the antenna weight while realizing wide-angle scanning.Moreover,the antenna profile is reduced to be less than one tenth of the wavelength of lowest frequency and the simulation results show that the array antenna element can achieve 6:1 operating bandwidth.It can achieve±60°scanning in E-plane with voltage standing wave ratio(VSWR)≤3 and±45°in H-plane with VSWR≤3.5.A prototype of 16×16 is fabricated and the experimental results are in good agreement with the simulation results,showing the feasibility and effectiveness of the designed low-profile tightly coupled dipole array antenna.
作者
邹文慢
方佳
张小林
金谋平
刘颂阳
ZOU Wenman;FANG Jia;ZHANG Xiaoin;JIN Mouping;LIU Songyang(The 38th Research Institute of China Electronic Technology Group Corporation,Hefei 230088,China;Anhui Province Engineering Laboratory for Antennas and Microwave,Hefei 230088,China)
出处
《电波科学学报》
CSCD
北大核心
2023年第3期400-406,共7页
Chinese Journal of Radio Science
关键词
低剖面
轻量化
紧耦合偶极子
寄生偶极子匹配层
频率选择表面(FSS)匹配层
low-profile
light weight
tightly coupled dipole array
parasitic dipole matching layer
frequency selective surface(FSS)matching layer
