| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Effect of aperture field distribution on the maximum radiated power at atmospheric pressure |
| Pengcheng Zhao(赵朋程), Lixin Guo(郭立新) |
| School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China |
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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.
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Received: 23 June 2017
Revised: 19 July 2017
Accepted manuscript online:
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PACS:
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51.50.+v
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(Electrical properties)
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92.60.Ta
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(Electromagnetic wave propagation)
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| Fund: 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. |
Corresponding Authors:
Pengcheng Zhao
E-mail: pczhao@xidian.edu.cn
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Cite this article:
Pengcheng Zhao(赵朋程), Lixin Guo(郭立新) Effect of aperture field distribution on the maximum radiated power at atmospheric pressure 2017 Chin. Phys. B 26 115101
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