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Method for obtaining electromagnetic scattering characteristics of cylindrical frequency selective surface

A technology of frequency selective surface and electromagnetic scattering characteristics, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of inaccurate characteristic research

Inactive Publication Date: 2016-04-27
HARBIN INST OF TECH
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Problems solved by technology

[0007] The purpose of the present invention is to obtain the electromagnetic scattering characteristics of the frequency selective surface of the cylinder. In order to solve the problem that the existing Floquet theorem is inaccurate in the research on the characteristics of the frequency selective surface of the cylinder, an analysis of the electromagnetic scattering characteristics of the frequency selective surface of the cylinder is proposed. method

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  • Method for obtaining electromagnetic scattering characteristics of cylindrical frequency selective surface
  • Method for obtaining electromagnetic scattering characteristics of cylindrical frequency selective surface
  • Method for obtaining electromagnetic scattering characteristics of cylindrical frequency selective surface

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specific Embodiment approach 1

[0033] Specific implementation mode 1. Combination Figure 1 to Figure 5 Describe the present embodiment, the method for obtaining the electromagnetic scattering characteristics of the cylindrical frequency selective surface described in the present embodiment, the method analyzes the electromagnetic scattering characteristics of the cylindrical frequency selective surface structure, the cylindrical frequency selective surface structure, which includes metal plate 1 and a dielectric layer 3 with a thickness of dmm, the dielectric constant of the dielectric layer 3 is ε r, the magnetic permeability is 1; the surface of the metal plate 1 is engraved with through holes 2 in the shape of a rectangular grid, and the shape of the through holes 2 is Y-shaped, and every two adjacent Y-shaped holes are along the column surface. The spacing is 40mm, the metal plate 1 is bent according to the radius of curvature of the cylinder as P, and the dielectric layer 3 is attached to the inner si...

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Abstract

The present invention provides a method for obtaining electromagnetic scattering characteristics of a cylindrical frequency selective surface, and belongs to the technical field of analysis methods of the electromagnetic scattering characteristics of the cylindrical frequency selective surface. An object of the present invention is to obtain the electromagnetic scattering characteristics of the cylindrical frequency selective surface, and to solve the problem that the traditional characteristic research on the cylindrical frequency selective surface by the Floquet theorem is not accurate. According to the method, the cylindrical frequency selective surfaces with different curvatures, different structure unit sizes and loaded dielectric layers having different thicknesses and dielectric constants are respectively used. Changes of the electromagnetic scattering characteristics and central resonance frequency of the cylindrical frequency selective surfaces along with the parameters are deeply interested. The method has a good guiding effect on design and implementation of the curved frequency selective surface having specific electromagnetic scattering characteristics. The method is suitable for obtaining the electromagnetic scattering characteristics of the cylindrical frequency selective surface.

Description

technical field [0001] The invention belongs to the technical field of methods for obtaining electromagnetic scattering characteristics of cylindrical surface frequency selection surfaces. Background technique [0002] Frequency Selective Surface, FSS is a single-layer or multi-layer periodic structure, generally formed by the arrangement of aperture units on metal patches or metal screens according to certain rules. As a spatial filter, FSS exhibits different scattering characteristics for electromagnetic waves of different frequencies, different incident angles and polarization modes, so that the transmission and reflection of electromagnetic waves can be effectively controlled. When the frequency of the incident wave is near the resonant frequency of the aperture unit or patch unit, it will show the characteristics of total reflection or total transmission. FSS can be used as radome, multi-frequency reflector antenna, polarizer and waveguide filter, etc., and is widely u...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 吴群刘志航马爽杨国辉
Owner HARBIN INST OF TECH
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