Journal of Xidian University ›› 2021, Vol. 48 ›› Issue (4): 83-90.doi: 10.19665/j.issn1001-2400.2021.04.011

• Information and Communications Engineering & Electronic Science and Technology • Previous Articles     Next Articles

Design of the broadband microstrip array antenna for blast furnace surface monitoring

WANG Yu1,2(),YU Jingna1,2(),CHEN Xianzhong1,2,HOU Qingwen1,2()   

  1. 1. School of Automation and Electrical Engineering,University of Science and Technology Beijing,Beijing 100083,China
    2. Key Laboratory of Knowledge Automation for Industrial Processes of Ministry of Education,University of Science and Technology Beijing,Beijing 100083,China
  • Received:2020-05-12 Online:2021-08-30 Published:2021-08-31

Abstract:

Aiming at the requirements of high-resolution imaging and high integration of the blast furnace radar,this paper presents a method for designing a wideband microstrip array antenna,which broadens the antenna bandwidth through the design of parasitic patches and air layers.By combining multi-input multi-output (MIMO) radar and synthetic aperture radar (SAR) imaging principles,a linear MIMO array is designed,and a near-field simulation imaging experiment is performed on the simulated feed line through the wave number domain imaging algorithm.Simulation results show that the gain of the main lobe of the antenna can reach 14.05 dBi,the reflection coefficient is less than -10 dB,the absolute bandwidth is 5.25 GHz,the operating frequency is 20.67~25.92 GHz,and the range resolution is increased to 3 cm compared with the existing blast furnace radar.The average error of the azimuth direction of the simulated material line imaging is 0.008 m,and the range direction is 0.0011 m.Compared with the traditional microstrip array antenna,this antenna effectively widens the bandwidth,and the range resolution is higher than that of the traditional blast furnace radar.It can accurately obtain the shape information on the simulated material line,and has an engineering application value for blast furnace surface monitoring.

Key words: microstrip antenna, broadband, parasitic patch, blast furnace, near field imaging

CLC Number: 

  • TN959.1