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Wave-absorbing metamaterial, antenna cover and antenna system

An antenna system and metamaterial technology, applied in the field of electromagnetic wave absorbing materials, can solve the problems of serious reflection, serious electromagnetic wave reflection, unfavorable electromagnetic wave absorption, etc., and achieve the effect of enhancing the wave absorption effect, reducing the reflectivity, and reducing the surface reflection.

Active Publication Date: 2016-07-20
KUANG CHI INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the reflection of electromagnetic waves on the surface of the absorbing material is relatively serious, which is not conducive to the absorption of electromagnetic waves.
Especially under the condition of large angle of incidence, the reflection is more serious

Method used

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  • Wave-absorbing metamaterial, antenna cover and antenna system
  • Wave-absorbing metamaterial, antenna cover and antenna system
  • Wave-absorbing metamaterial, antenna cover and antenna system

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Such as figure 1 As shown, the absorbing metamaterial includes a magnetic electromagnetic absorbing material layer 2 and a conductive geometric structure unit 1 combined with the magnetic electromagnetic absorbing material layer 2 . The magnetic electromagnetic wave-absorbing material layer 2 can be based on rubber in combination with an electromagnetic wave absorber, and the electromagnetic wave absorber can be a particle ferrite or a micron / submicron metal particle absorber or a magnetic fiber absorber or a nano-magnetic absorber, which can pass The way of doping or proportioning is combined in the rubber matrix. The magnetic electromagnetic wave-absorbing material layer 2 may be a wave-absorbing patch material, which has a small thickness and can be produced automatically. The thickness and electromagnetic parameters of the magnetic electromagnetic wave-absorbing material layer 2 can be set according to the working frequency band of the wave-absorbing metamaterial, ...

Embodiment 2

[0043] This embodiment follows the component numbers and part of the content of the previous embodiments, wherein the same numbers are used to denote the same or similar components, and descriptions of the same technical content are selectively omitted. For the description of the omitted part, reference may be made to the foregoing embodiments, and this embodiment will not be repeated.

[0044] Such as Figure 5 As shown, the difference from Embodiment 1 is that the conductive geometric structure unit 4 is octagonal with openings, and parallel metal strips 40 are arranged at the openings. Such as Figure 5 As shown, the arrangement law of the conductive geometric structure unit 4 is a periodic law, and the periodic law is shown as a periodic arrangement in two directions perpendicular to each other in the plane, extending in the form of a square grid, but the arrangement law is not limited to this, and can be It is a misplaced arrangement or a disordered arrangement or an un...

Embodiment 3

[0048] This embodiment follows the component numbers and part of the content of the previous embodiments, wherein the same numbers are used to denote the same or similar components, and descriptions of the same technical content are selectively omitted. For the description of the omitted part, reference may be made to the foregoing embodiments, and this embodiment will not be repeated.

[0049] Such as Figure 8 As shown, the difference from Embodiment 1 is that the conductive geometric structure unit 5 is a quadrangle with an opening, and parallel metal strips 50 are arranged at the opening, and the center of the side where the opening is located is displaced into the quadrangle. Such as Figure 8 As shown, the arrangement law of the conductive geometric structure unit 5 is a periodic law, and the periodic law is shown as a periodic arrangement in two directions perpendicular to each other in the plane, extending in the form of a square grid, but the arrangement law is not l...

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Abstract

The invention provides a wave-absorbing metamaterial, an antenna cover and an antenna system. By adoption of the wave-absorbing metamaterial, decline of reflectivity can be realized under conditions of vertical incidence and large-angle incidence. The wave-absorbing metamaterial comprises a magnetic electromagnetic wave material layer and a conductive geometric structure layer combined with the magnetic electromagnetic wave material layer, wherein the conductive geometric structure layer comprises multiple conductive geometric structure units arranged in sequence; each conductive geometric structure unit comprises a non-closed annular conductive geometric structure; and two strip-shaped structures which are arranged in parallel relatively are arranged at the position of more than one opening of each annular conductive geometric structure.

Description

technical field [0001] The present invention relates to electromagnetic wave absorbing material and radome and antenna system containing it. Background technique [0002] Traditional wave-absorbing materials, especially wave-absorbing patch materials with rubber as the matrix and high-performance absorbents, achieve electromagnetic absorption and electromagnetic isolation through high magnetic permeability and magnetic loss. However, along with high magnetic permeability and high magnetic loss, the dielectric constant of the absorbing material is also relatively high, and the relative permittivity in the L and S frequency bands is usually above 15. In this case, the reflection of electromagnetic waves on the surface of the absorbing material is relatively serious, which is not conducive to the absorption of electromagnetic waves. Especially under the condition of large angle of incidence, the reflection is more serious. Contents of the invention [0003] The purpose of t...

Claims

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Application Information

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IPC IPC(8): H01Q17/00H01Q1/42
Inventor 不公告发明人
Owner KUANG CHI INST OF ADVANCED TECH
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