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Study on transmission characteristics of electromagnetic waves in inhomogeneously magnetized plasma sheath

Bo Yong Zhao Qing Luo Xian-Gang Liu Ying Chen Yu-Xu Liu Jian-Wei

Study on transmission characteristics of electromagnetic waves in inhomogeneously magnetized plasma sheath

Bo Yong, Zhao Qing, Luo Xian-Gang, Liu Ying, Chen Yu-Xu, Liu Jian-Wei
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  • Received Date:  14 August 2015
  • Accepted Date:  08 October 2015
  • Published Online:  05 February 2016

Study on transmission characteristics of electromagnetic waves in inhomogeneously magnetized plasma sheath

    Corresponding author: Bo Yong, boyong_boyong@163.com
  • 1. School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;
  • 2. State Key Laboratory of Optical Technologies for Microfabrication, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
Fund Project:  Project supported by the National High Technology Research and Development Program of China (Grant No. 2011AA7022016), the National Natural Science Foundation of China (Grant No. 11275045), and the Scientific Research Fundation of the Education Department of Sichuan Province, China (Grant No. 2013GZ01333).

Abstract: We use simulation software to simulate the plasma sheath flow field of RAM-II at four different altitudes, and get the distribution information of electron density, temperature, and Mach number of plasma sheath at four typical flight altitudes. On this basis, the paper analyzes the cause of the distribution at each altitude. Secondly, Z transform FDTD formula is used to solve the electromagnetic problem in the dispersed medium. According to RAM-II aircraft plasma sheath data, we calculate the power transmission coefficient and power reflectance coefficient of L, S-band electromagnetic waves by Z transform FDTD method at each altitude. Because of the strength of magnetic field used in actual aircraft cannot be uniform, in this calculation the plasma sheath and the magnetic induction are both non-uniform. The transmission characteristics are also different between left-hand circularly polarized waves and right-hand circularly polarized wave in the magnetized plasma. Finally, the paper gives some theoretical design advise about communication antenna for supersonic speed aircraft.

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