Absorption of electromagnetic wave by inhomogeneous, unmagnetized plasma

doi:10.1007/s11460-009-0030-1

Front Elect Electr Eng Chin

2009, Vol. 4

Issue (2) : 210-213 https://doi.org/10.1007/s11460-009-0030-1

RESEARCH ARTICLE

Absorption of electromagnetic wave by inhomogeneous, unmagnetized plasma

Ming YAN¹(

), Gang LEI¹, Xiwei HU¹, Keran SHAO²

1. National Key Laboratory for Vessel Integrated Power System Technology, Navy University of Engineering, Wuhan 430033, China; 2. College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

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Abstract

In this article, a novel and normalized Z-transform finite-difference time-domain (ZTFDTD) method is presented. This method uses a more general form of Maxwell’s equations using the BoldItalic, BoldItalic, BoldItalic fields. The iterative model of BoldItalic-BoldItalic-BoldItalic-BoldItalic can be obtained by using the Z-transform resulted frequency-dependent formula between BoldItalic and BoldItalic. The advantages of the ZTFDTD consist in that the discrete equations are simple, the results are precise, easy to program and capable of dealing with the key technologies of finite-difference time-domain (FDTD), such as absorbing boundary conditions (uniaxial anisotropic perfectly matched layer, UPML) and near-to-far-field transformation. The ZTFDTD method is then used to simulate the interaction of electromagnetic wave with plasma. Using a simplified two-dimensional model, the stealth effect of inhomogeneous, unmagnetized plasma is studied both in different electron densities of plasma, different electromagnetic wave frequencies and different plasma collision frequencies. The numerical results indicate that plasma stealth is effective in theory and a reasonable selection with the plasma parameters that can greatly enhance the effectiveness of plasma stealth.

Keywords finite-difference time-domain (FDTD) Z-transform anisotropic perfectly matched layer plasma stealth radar cross section (RCS)

Corresponding Author(s): YAN Ming,Email:hustym@sohu.com

Issue Date: 05 June 2009

Cite this article:

Ming YAN,Gang LEI,Xiwei HU, et al. Absorption of electromagnetic wave by inhomogeneous, unmagnetized plasma[J]. Front Elect Electr Eng Chin, 2009, 4(2): 210-213.

URL:

https://academic.hep.com.cn/fee/EN/10.1007/s11460-009-0030-1
https://academic.hep.com.cn/fee/EN/Y2009/V4/I2/210

Fig.1 Three boundaries and zoning of ZTFDTD grid

Fig.2 Amplitude and RCS of perfectly conducting plate covered with nothing and IUP. (a) Amplitude of perfectly conducting plate covered with nothing; (b) amplitude of perfectly conducting plate covered with IUP; (c) RCS of perfectly conducting plate covered with nothing and IUP

Fig.3 RCS of perfectly conducting plate covered with IUP in different electron densities

Fig.4 RCS of perfectly conducting plate covered with IUP in different EM wave frequencies

Fig.5 RCS of perfectly conducting plate covered with IUP in different plasma collision frequencies

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