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A Combined Absorbing Composite Material Combining the Advantages of Multiple Types of Metamaterials

A technology of composite materials and metamaterials, applied in the field of combined absorbing composite materials, can solve the problems of limited practical application and narrow bandwidth of metamaterial absorbers, and achieve the benefits of industrial production and promotion, lower performance requirements, and broaden the scope of absorption The effect of wave band

Active Publication Date: 2022-06-03
ZHONGBEI UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the thickness of the pyramid-like all-dielectric metamaterial absorber is about 10 mm, while the bandwidth of the two-dimensional metasurface metamaterial absorber is relatively narrow.
Therefore, the practical application of a single type of metamaterial absorber is very limited

Method used

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  • A Combined Absorbing Composite Material Combining the Advantages of Multiple Types of Metamaterials
  • A Combined Absorbing Composite Material Combining the Advantages of Multiple Types of Metamaterials
  • A Combined Absorbing Composite Material Combining the Advantages of Multiple Types of Metamaterials

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Embodiment

[0038] This example is figure 1 As shown, the combined absorbing composite material with the advantages of various types of metamaterials arranged by several periodic unit structures, the overall structure size can be increased according to the needs of the application, but the minimum number of units should be greater than or equal to 4 (more than or equal to 2 horizontally and vertically).

[0039] like figure 2 and image 3 As shown, the periodic unit structure should include a metal substrate 1, a lower absorber 2, a second upper absorber 4 and a first upper absorber 5, a metal square ring 3 laid between the two layers, and a metal sheet laid on the top 6.

[0040] The metal substrate 1 provides support and microwave reflection for the entire combined wave-absorbing composite material, and generates parallel or reverse currents with the above-mentioned metal wires 3 and metal sheets 6, thereby forming electromagnetic resonance. Its size is equal to the bottom surface ...

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Abstract

The invention belongs to the technical field of electromagnetic functional materials, and specifically relates to a combined wave-absorbing composite material that has the advantages of various types of metamaterials; it includes a metal substrate, and an array of wave-absorbing units is arranged on the metal substrate, and each row includes at least Two wave-absorbing units, each column also includes at least two wave-absorbing units; the wave-absorbing unit includes a lower layer of absorbing body, and the center position of the upper surface of the lower layer of wave-absorbing body is sequentially laid with metal wires from bottom to top. An upper-layer absorber and a top metal sheet; a second upper-layer absorber is arranged around the first upper-layer absorber located on the upper surface of the lower-layer absorber; the lower-layer absorbers of all absorbing units are connected into a whole board, Cling to the upper surface of the metal substrate. The combined wave-absorbing composite material of the invention has low requirements on the loss capability of the wave-absorbing agent, has the characteristics of polarization insensitivity, wide incident angle, and the like, and has wide applications in the fields of broadband stealth materials, electromagnetic shielding, and wave-absorbing devices.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic functional materials, and in particular relates to a combined wave absorbing composite material with the advantages of multiple types of metamaterials. Background technique [0002] The emergence of metamaterials has made microwave absorbing materials achieve major breakthroughs in terms of "lightness, width and thinness". For example, the invention of pyramid-shaped all-dielectric metamaterials has achieved a reduction in the weight of the absorbing body and an increase in the absorbing bandwidth; The invention of the two-dimensional metasurface absorbing composite material realizes the reduction of the thickness of the absorbing body and the improvement of the absorbing strength. However, the thickness of the pyramid-shaped all-dielectric metamaterial absorber is about 10 mm, while the bandwidth of the two-dimensional metasurface metamaterial absorber is relatively narrow. Therefore, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/00H01Q17/00
CPCH01Q15/0086H01Q17/002H01Q17/00
Inventor 赵贵哲樊益泽韩冠宇苏晓岗刘亚青
Owner ZHONGBEI UNIV
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