西安电子科技大学学报 ›› 2022, Vol. 49 ›› Issue (2): 29-35.doi: 10.19665/j.issn1001-2400.2022.02.004

• 信息与通信工程 • 上一篇    下一篇

一种双频多极化共口径波导天线阵列

鲁加国1,2(),张洪涛2(),汪伟2(),张冰1(),尹应增1()   

  1. 1.西安电子科技大学 电子工程学院,陕西 西安 710071
    2.中国电子科技集团公司 第三十八研究所,安徽 合肥 230088
  • 收稿日期:2022-01-20 出版日期:2022-04-20 发布日期:2022-05-31
  • 通讯作者: 尹应增
  • 作者简介:鲁加国(1964—),男,研究员,E-mail: jglu@ustc.edu.cn;|张洪涛(1980—),男,研究员,E-mail: zhangfan0826@126.com;|汪 伟(1969—),男,研究员,E-mail: shu00ww@163.com;|张 冰(1997—),男,西安电子科技大学博士研究生,E-mail: zhangbing8196316@163.com
  • 基金资助:
    国家自然科学基金(61671416)

Novel dual-band multi-polarized shared-aperture waveguide antenna array

LU Jiaguo1,2(),ZHANG Hongtao2(),WANG Wei2(),ZHANG Bing1(),YIN Yingzeng1()   

  1. 1. School of Electronic Engineering,Xidian University,Xi’an 710071,China
    2. The 38th Research Institute of China Electronics Technology Corporation,Hefei 230088,China
  • Received:2022-01-20 Online:2022-04-20 Published:2022-05-31
  • Contact: Yingzeng YIN

摘要:

针对雷达应用中共口径天线阵列的小型化问题,提出了一种实现双频多极化波导天线阵列的有效设计方法。该天线阵具有口径共用、低剖面、重量轻、辐射效率高等特点。该天线阵列由工作在L波段的线阵和C波段的双极化线性阵组成。L波段线阵为垂直极化矩形背腔缝隙天线,C波段双极化线阵为脊波导缝隙天线阵。L波段天线位于两个C波段垂直极化开槽波导之间,同时位于C波段水平极化波导下方。为了实现共口径天线阵列的小型化,在L波段矩形波导中引入了一种有效金属桥馈电设计。为了验证所提出设计的可行性,加工了一个工作在C波段的8×16天线阵列和工作在L波段的2×2天线阵列实物,并进行了测试。实验结果表明,在电压驻波比小于2的情况下,该天线阵在L波段的阻抗带宽约为12%,在C波段的阻抗带宽约为5.5%,天线辐射效率在85%以上。

关键词: 背腔天线, 双频天线, 多极化天线, 共口径天线, 波导缝隙天线

Abstract:

An efficient technique for realizing dual-band multi-polarized waveguide antenna array featuring in shared-aperture,low-profile,light-weight and high radiation efficiency is proposed.A rectangular cavity-backed slotted antenna is adopted to realize L-band vertical polarization,while the C-band horizontal and vertical polarization are realized by utilizing the ridged waveguide slotted antenna.The L-band antenna is located between two C-band vertical-polarized slotted waveguides and below a C-band horizontal-polarized waveguide.To achieve a more miniaturized volume of the shared-aperture antenna array,an efficient feeding design of a metal bridge is introduced into the L-band rectangular waveguide.In order to confirm the feasibility of the proposed design,an array prototype with 8×16 elements operating in the C-band and 2×2 elements operating in the L-band is fabricated and measured.Experimental results demonstrate that the proposed antenna array has a satisfactory impedance bandwidth of 12% in the L-band and that of 5.5% in the C-band with VSWR<2,and the antenna radiation efficiency of above 85% for both frequency bands.

Key words: cavity-backed antenna, dual-band antenna, multi-polarized antenna, shared-aperture antenna, waveguide slotted antenna

中图分类号: 

  • TN959.1