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Large-scale quasi-periodic structure electromagnetic scattering characteristic analysis method based on sub-global basis function method

A technology of electromagnetic scattering characteristics and analysis methods, which is applied in the field of electromagnetic scattering characteristics analysis of large-scale quasi-periodic structures, and can solve problems such as fixation

Active Publication Date: 2020-10-27
SOUTHEAST UNIV
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Problems solved by technology

With the research on the sub-global basis function method, most of them are accelerating the sub-global basis function method. Since the establishment method of the traditional sub-global basis function is relatively fixed, the objects of analysis are all periodic array structures with identical units.
[0004] In summary, the basis function establishment scheme adopted by the existing sub-global basis function method has limitations and is not the optimal scheme

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  • Large-scale quasi-periodic structure electromagnetic scattering characteristic analysis method based on sub-global basis function method
  • Large-scale quasi-periodic structure electromagnetic scattering characteristic analysis method based on sub-global basis function method
  • Large-scale quasi-periodic structure electromagnetic scattering characteristic analysis method based on sub-global basis function method

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Embodiment Construction

[0065] The technical solution of the present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0066] Such as figure 1 As shown, in order to break through the limitation that the sub-global basis function method cannot deal with the quasi-periodic structure, and can greatly reduce the unknowns in the matrix impedance matrix and reduce the memory required for calculation compared with the traditional full-wave method, this embodiment proposes A method for analyzing the electromagnetic scattering characteristics of a large-scale quasi-periodic structure based on the sub-global basis function method, specifically comprising the following steps:

[0067] S100: Carry out geometric modeling and triangular meshing of reference units in large-scale quasi-periodic structures, and export the meshes, such as figure 2 As shown in , rotate and scale the grid in space to obtain the grid information of other units, and there is a one-to-on...

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Abstract

The invention discloses a large-scale quasi-periodic structure electromagnetic scattering characteristic analysis method based on a sub-global basis function method. The method makes full use of the physical characteristics of a quasi-periodic structure and extracts a main characteristic current mode as a sub-global basis function through a characteristic model, thereby greatly reducing the complexity of solution and improving the calculation efficiency.

Description

technical field [0001] The invention relates to a method for analyzing electromagnetic scattering characteristics of large-scale quasi-periodic structures based on a sub-global basis function method, belonging to the field of numerical calculation of electromagnetic characteristics of periodic structures. Background technique [0002] In recent years, periodic structures have been widely used in phased array radars, frequency selective surfaces and metamaterials. With the development, quasi-periodic structures have more and more important applications in reflectarray antennas and metasurfaces. Most of the electromagnetic numerical calculation methods for this kind of quasi-periodic array structure still use the hybrid algorithm of full-wave method and accelerated algorithm, and do not use the structural characteristics and physical characteristics of the array structure. [0003] The sub-global basis function method has been committed to extracting the global basis function...

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Application Information

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IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 相伟陆卫兵杨武
Owner SOUTHEAST UNIV
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