A SIW Horn Antenna without Broad Wall Loaded with Trapezoidal Air Slot

Authors

  • Mingxi Zhang 1 College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China , 2 The Aeronautical Science Key Laboratory for High Performance Electromagnetic Windows Jinan, 250023, China
  • Wei Li College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China
  • Shaobin Liu College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China
  • Xiaochun Liu 1 College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China ,2 The Aeronautical Science Key Laboratory for High Performance Electromagnetic Windows Jinan, 250023, China
  • Chen Wu College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China
  • Junyu Deng College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China

Keywords:

Broadband antenna, horn antenna, impedance matching, substrate integrated waveguide

Abstract

In this paper, a SIW horn antenna without broad wall loaded with trapezoidal air slot is proposed, processed, and tested. Based on the SIW horn antenna, this antenna strips off the wide wall at the horn diameter, introduces surface waves on the surface of the dielectric substrate, and improves the impedance matching between the antenna and free space. Further, trapezoidal air slots are loaded on the exposed dielectric substrate, gradually changes the dielectric constant of the dielectric substrate, so that the dielectric constant of the dielectric substrate can get closer to which of air, and the working bandwidth can be further expanded. The actual measurement results show that the working bandwidth of the antenna is 15.2-38GHz, the relative bandwidth reaches to 85.7%, and the maximum gain in the band is 9.1dBi.

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Author Biographies

Mingxi Zhang, 1 College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China , 2 The Aeronautical Science Key Laboratory for High Performance Electromagnetic Windows Jinan, 250023, China

Mingxi Zhang, Research Fellow, graduated from Beijing University of Aeronautics and Astronautics in 1982. He is the Chief Expert of Nonmetal Structural Materials Technology of China Aviation Industry Corporation. He is currently an Adjunct Professor at Nanjing University of Aeronautics and Astronautics and Jinan University. His current research interests include the research of aircraft electromagnetic window products and functional composite materials.

Wei Li , College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China

Wei Li was born in Anhui, China, in 1997. He received the B.Eng. degree in Information Engineering from Hunan University of Technology, Zhuzhou, China, in 2018. Currently studying for a master's degree in Nanjing University of Aeronautics and Astronautics, Nanjing, China. His research focuses on monopulse antenna, horn antenna, microwave passive device based on SIW (Substrate Integrated Waveguide).

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Published

2020-09-01

How to Cite

[1]
Mingxi Zhang, Wei Li, Shaobin Liu, Xiaochun Liu, Chen Wu, and Junyu Deng, “A SIW Horn Antenna without Broad Wall Loaded with Trapezoidal Air Slot”, ACES Journal, vol. 35, no. 9, pp. 1047–1052, Sep. 2020.

Issue

2020: Vol 35 Iss 9

Section

Articles