Wave-absorbing structure of double-frequency polarized insensitive monolayer metamaterial

A technology of metamaterials and wave structures, applied in the structural form of radiation elements, electrical components, antennas, etc., can solve the problems of complex multi-layer structure, large section size, sensitive electromagnetic wave polarization direction, etc., and achieve low profile and easy processing and production , low-cost effect

Inactive Publication Date: 2017-02-22
NORTHWESTERN POLYTECHNICAL UNIV
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  • Application Information

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Problems solved by technology

These metamaterial absorbing structures have outstanding performance in one aspect, but there are deficiencies in other aspects, such as complex multi-layer structure, large cross-sectional size, absorption at a single frequency point, and sensitivity to the polarization direction of electromagnetic waves. Wait

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  • Wave-absorbing structure of double-frequency polarized insensitive monolayer metamaterial
  • Wave-absorbing structure of double-frequency polarized insensitive monolayer metamaterial
  • Wave-absorbing structure of double-frequency polarized insensitive monolayer metamaterial

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Embodiment Construction

[0017] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0018] figure 1 The schematic diagram of the three-dimensional structure is shown, and the absorbing structure is composed of three parts: the metamaterial structure surface 1, the dielectric plate 2 and the metal base plate 3, and x, y, z represent the three-dimensional coordinate system.

[0019] Figure 2(a) The structure of each part of the metamaterial structure surface 1, 4 represents the square patch in the center, 1a, 1b, 1c and 1d represent the four composite metal structures around the square 4, 2 and 3 represent the composite metal structures The two components of 1a respectively include "T" fonts 2a, 2b, 2c, 2d and 3a, 3b, 3c, 3d. Figure 2(b) In the top view of the absorbing structure, P represents the side length of the square metal base plate and the side length of the dielectric substrate, A represents the side length of the central square patch 4,...

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Abstract

The invention relates to a wave-absorbing structure of a double-frequency polarized insensitive monolayer metamaterial. The wave-absorbing structure comprises a metamaterial structure surface, a dielectric plate and a metal base plate. The metamaterial structure surface comprises a square metal patch and four identical composite metal structures surrounding the square metal patch. Each composite metal structure comprises four 'T'-shaped structures, and every two 'T'-shaped structures are symmetrical to each other by taking the straight line, where one diagonal line of the middle square metal patch is located, as the center. By the wave-absorbing structure, the defects of single-frequency-point wave absorption, sensitiveness to polarization and large relative thickness of wave-absorbing materials are overcome.

Description

technical field [0001] The invention belongs to the technical field of metamaterial wave absorption, and in particular relates to a dual-frequency polarization insensitive single-layer metamaterial wave absorbing structure. Background technique [0002] Stealth technology and stealth materials are of great significance to national defense construction, and wave-absorbing materials are one of the effective means of stealth. Most of the absorbing materials used at this stage are absorber materials, such as ferrite absorbing materials and nano absorbing materials. Its absorbing effect mainly depends on the chemical composition inside the material. Unlike such materials, the performance of electromagnetic metamaterial-based absorbing structures mainly depends on the specific metamaterial structure. [0003] In 2008, the Landy experiment confirmed the wave-absorbing characteristics of the metamaterial structure. The absorption rate of the metamaterial absorber reached 99% at 11...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q17/00H01Q1/36
CPCH01Q1/36H01Q17/008
Inventor 郭陈江郑琦丁君
Owner NORTHWESTERN POLYTECHNICAL UNIV
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