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Microwave absorbing metamaterial

A technology of metamaterials and absorbing coatings, applied in the field of materials, can solve the problems of narrow absorption electromagnetic wave frequency band, poor tunability of absorbing frequency, etc., and achieve the effect of good absorbing performance and light weight.

Active Publication Date: 2017-01-11
KUANG CHI CUTTING EDGE TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the wave-absorbing material in the prior art has a narrow frequency band for absorbing electromagnetic waves and poor adjustability of the wave-absorbing frequency, the present invention provides a wave-absorbing metamaterial

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] figure 1 It is a structural schematic diagram of a wave-absorbing metamaterial according to Embodiment 1 of the present invention, such as figure 1 As shown, the microwave-absorbing metamaterial of the present invention includes 7 layers of honeycomb structure layer 1, 7 layers of resistance structure layers (not shown) with a thickness of 0.025mm and a metal plate 2, wherein the metal plate 2 is a copper plate, and the resistance structure layer of the resistance structure layer The area is smaller than the area of ​​the adjacent honeycomb structure layer 1, the resistance structure layer and the honeycomb structure layer 1 are both rectangular, and the lengths of the two are equal. The resistance structure of the resistance structure layer is vertical bars, which are arranged periodically in squares. The 7-layer honeycomb structure layer 1 and the 7-layer resistance structure layer are alternately superimposed on the copper plate. The thickness of the 7-layer honeyco...

Embodiment 2

[0034] The microwave-absorbing metamaterial of the present invention includes 7 layers of honeycomb structure layers, 7 layers of resistance structure layers with a thickness of 0.030mm and a metal plate, wherein the metal plate is an iron plate, and the area of ​​the resistance structure layer is smaller than the area of ​​the adjacent honeycomb structure layer 1 , both the resistance structure layer and the honeycomb structure layer are rectangular, and the widths of the two are equal. The 7-layer honeycomb structure layer and the 7-layer resistance structure layer are alternately superimposed on the copper plate. The thickness of the 7-layer honeycomb structure layer from the outside to the metal plate is: 5.6mm, 5.5mm, 4mm, 5.8mm, 6mm, 6mm, 7.4 mm, the conductivity of the 7-layer resistance structure layer from the outside to the metal plate is: 95S / m, 41S / m, 69S / m, 89S / m, 120S / m, 126S / m and 370S / m, the thickness of the aluminum plate is 0.018mm. The surfaces of the honey...

Embodiment 3

[0036] Such as figure 1 As shown, the microwave-absorbing metamaterial of the present invention includes 7 layers of honeycomb structure layers, 7 layers of resistance structure layers with a thickness of 0.020mm and a metal plate, wherein the metal plate is an aluminum plate, and the 7 layers of honeycomb structure layers and 7 layers of resistance structure layers are sequentially Alternately stacked on the aluminum plate, the area of ​​the resistance structure layer is smaller than the area of ​​the adjacent honeycomb structure layer, the resistance structure layer and the honeycomb structure layer are rectangular, and the width of the two is equal. The thickness of the 7-layer honeycomb structure layer from the outside to the metal plate is: 5.6mm, 5.5mm, 4mm, 5.8mm, 6mm, 6mm, 7mm, and the conductivity of the 7-layer resistance structure layer from the outside to the metal plate is: 95S / m, 35S / m, 69S / m, 89S / m, 120S / m, 126S / m and 694S / m, the thickness of the aluminum plate...

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Abstract

The invention discloses a microwave absorbing metamaterial, which comprises a metal plate, at least one honeycomb structure layer and at least one resistor structure layer, wherein the at least one honeycomb structure layer and the at least one resistor structure layer are alternately stacked on the metal plate; each honeycomb structure layer has a predetermined thickness; and each resistor structure layer has predetermined conductivity. According to the microwave absorbing metamaterial provided by the invention, each honeycomb structure layer in a direction from incoming waves to the metal plate has the predetermined thickness, each resistor structure layer has the same thickness and different conductivity, the microwave absorbing frequency of the microwave absorbing metamaterial is adjustable, a corresponding working frequency can be adjusted according to actual conditions, the microwave absorbing performance is good in a wide frequency range, and due to the honeycomb structure, the weight is extremely light.

Description

technical field [0001] The invention relates to the field of materials, and more specifically, to a wave-absorbing metamaterial. Background technique [0002] Absorbing materials refer to a class of materials that can absorb and attenuate incident electromagnetic waves, convert their electromagnetic energy into heat energy and dissipate them, or make electromagnetic waves disappear due to interference. The absorbing technology includes two types: coating absorbing and structural absorbing. Coating absorbing refers to coating the surface of the structure with a coating with absorbing function to achieve the purpose of reducing electromagnetic waves. Structural absorbing is to endow the material with absorbing and load bearing Double performance. [0003] Existing wave-absorbing materials use the absorption properties of each material to absorb electromagnetic waves, and design the components of different materials to make the mixed materials have specific wave-absorbing char...

Claims

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Application Information

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IPC IPC(8): H01Q17/00
Inventor 不公告发明人
Owner KUANG CHI CUTTING EDGE TECH LTD
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