Journal of Xidian University ›› 2022, Vol. 49 ›› Issue (2): 29-35.doi: 10.19665/j.issn1001-2400.2022.02.004

• Information and Communications Engineering • Previous Articles     Next Articles

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 E-mail:jglu@ustc.edu.cn;zhangfan0826@126.com;shu00ww@163.com;zhangbing8196316@163.com;yzyin@mail.xidian.edu.cn

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

CLC Number: 

  • TN959.1