Analytical Method of Electromagnetic Scattering by Multilayer Spin Electromagnetic Anisotropic Dielectric Ball

An anisotropic, analytical approach to the field of electromagnetic scattering from a three-dimensional dielectric sphere

Inactive Publication Date: 2016-11-02
HANGZHOU DIANZI UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to propose an analytical method for calculating the electromagnetic scattering of a multilayer spin electromagnetic anisotropic medium sphere in view of the deficiency of the existing electromagnetic scattering analytical solution theory

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  • Analytical Method of Electromagnetic Scattering by Multilayer Spin Electromagnetic Anisotropic Dielectric Ball
  • Analytical Method of Electromagnetic Scattering by Multilayer Spin Electromagnetic Anisotropic Dielectric Ball
  • Analytical Method of Electromagnetic Scattering by Multilayer Spin Electromagnetic Anisotropic Dielectric Ball

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Embodiment Construction

[0068] The present invention will be further described below in conjunction with drawings and embodiments.

[0069] An analytical method for electromagnetic scattering of a multilayer spin electromagnetic anisotropic dielectric sphere, comprising the following steps:

[0070] Assign values ​​to the parameters in the electromagnetic parameter matrix for each layer of the multilayer gyromagnetic medium:

[0071] The eigenvalues ​​and eigenvectors of each layer were calculated by a Fortran program. Then calculate the expansion coefficient of each layer and . In this way, we can calculate the expansion coefficient of the outermost layer (the first layer) through the boundary conditions (9a)-(10b), use (11a) (11b) to find the scattering coefficient, and finally use (12) to find the incident plane wave Bottom, the radar cross section of a multilayered spin electromagnetic sphere.

[0072] To sum up, the field inside the multi-layer rotating electromagnetic dielectric sphere c...

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Abstract

The invention discloses an analysis method for electromagnetic scattering of a multilayer spin electromagnetic anisotropy medium sphere. The steps of the present invention are as follows: Step 1. Utilize the established spin electromagnetic medium spherical vector wave function, according to the characteristics of the spherical vector wave function, draw the electromagnetic field in the uniform spin electromagnetic anisotropic medium, and the electromagnetic field can be used with the first and the second The second type of spherical vector wave function superposition represents; step 2. Utilize the tangential continuity of the electromagnetic field on the spherical boundary and the tangential orthogonal characteristics of the spherical vector wave function to obtain the spherical vector wave function for the electromagnetic field in the multilayer spiral electromagnetic dielectric sphere The iterative formula of the expanded expansion coefficient; solving the iterative equation, obtains the expansion coefficient expanded by the spherical vector wave function of the scattering field, and then obtains the electromagnetic scattering characteristics of the multi-layer rotating electromagnetic dielectric sphere under the incident plane wave. The invention is suitable for solving the electromagnetic scattering characteristics of multi-layer spin electromagnetic anisotropy medium spheres under general conditions.

Description

technical field [0001] The invention belongs to the field of electromagnetic scattering of three-dimensional dielectric spheres, and in particular relates to an analysis method for electromagnetic scattering of multi-layer spin electromagnetic anisotropic dielectric spheres. Background technique [0002] Generally, there are three main methods to study electromagnetic scattering. 1. Numerical calculation method, which is directly calculated by computer, such as method of moments, finite element, etc. The second is the experimental method, which is divided into direct test and scale model test, and the third is the analytical method, such as the mode expansion method, separation of variables, wave function method, etc. The analytical method is a relatively traditional research method, which has the disadvantage of high requirements for the model studied, but because it can give a closed solution, it has a clear physical meaning and is an exact solution. Using its numerical re...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 耿友林葛亚岑田莹莹
Owner HANGZHOU DIANZI UNIV
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