中国物理B ›› 2017, Vol. 26 ›› Issue (11): 115101-115101.doi: 10.1088/1674-1056/26/11/115101

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Effect of aperture field distribution on the maximum radiated power at atmospheric pressure

Pengcheng Zhao(赵朋程), Lixin Guo(郭立新)   

  1. School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China
  • 收稿日期:2017-06-23 修回日期:2017-07-19 出版日期:2017-11-05 发布日期:2017-11-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61501358, 11622542, 61431010, and 61627901) and the Fundamental Research Funds for the Central Universities, China.

Effect of aperture field distribution on the maximum radiated power at atmospheric pressure

Pengcheng Zhao(赵朋程), Lixin Guo(郭立新)   

  1. School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China
  • Received:2017-06-23 Revised:2017-07-19 Online:2017-11-05 Published:2017-11-05
  • Contact: Pengcheng Zhao E-mail:pczhao@xidian.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61501358, 11622542, 61431010, and 61627901) and the Fundamental Research Funds for the Central Universities, China.

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摘要： The air breakdown in the high-power antenna near-field region limits the enhancement of the radiated power. A model coupling the field equivalent principle and the electron number density equation is presented to study the breakdown process in the near-field region of the circular aperture antenna at atmospheric pressure. Simulation results show that, although the electric field in the near-field region is nonuniform, the electron diffusion has small influence on the breakdown process when the initial electron number density is uniform in space. The field magnitude distribution on the aperture plays an important role in the maximum radiated power above which the air breakdown occurs. The maximum radiated power also depends on the phase difference of the fields at the center and edge of the aperture, especially for the uniform field magnitude distribution.

关键词: field equivalent principle, aperture antenna, air breakdown, maximum radiated power

Abstract: The air breakdown in the high-power antenna near-field region limits the enhancement of the radiated power. A model coupling the field equivalent principle and the electron number density equation is presented to study the breakdown process in the near-field region of the circular aperture antenna at atmospheric pressure. Simulation results show that, although the electric field in the near-field region is nonuniform, the electron diffusion has small influence on the breakdown process when the initial electron number density is uniform in space. The field magnitude distribution on the aperture plays an important role in the maximum radiated power above which the air breakdown occurs. The maximum radiated power also depends on the phase difference of the fields at the center and edge of the aperture, especially for the uniform field magnitude distribution.

Key words: field equivalent principle, aperture antenna, air breakdown, maximum radiated power

中图分类号:  (Electrical properties)

  • 51.50.+v
92.60.Ta (Electromagnetic wave propagation)