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Multi-layer broadband metamaterial wave absorber based on multimode resistor and design method of multi-layer broadband metamaterial wave absorber

A technology of wave absorbers and metamaterials, which can be used in electrical components, antennas and other directions to solve the problems of thick and thick broadband wave absorbers.

Active Publication Date: 2021-04-06
AIR FORCE UNIV PLA
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to propose a multi-layer broadband absorber based on multi-mode resistance and its design method to solve the problem that the thickness of the multi-layer structure is too thick to realize the broadband absorber

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  • Multi-layer broadband metamaterial wave absorber based on multimode resistor and design method of multi-layer broadband metamaterial wave absorber
  • Multi-layer broadband metamaterial wave absorber based on multimode resistor and design method of multi-layer broadband metamaterial wave absorber
  • Multi-layer broadband metamaterial wave absorber based on multimode resistor and design method of multi-layer broadband metamaterial wave absorber

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Embodiment Construction

[0055] Below in conjunction with accompanying drawing, technical solution of the present invention is described in further detail;

[0056] 1. Single-layer ITO structure design

[0057] In order to explain the absorbing mechanism based on the multi-mode resistive absorber and lay the foundation for the selection of the later ITO structure type, the absorbing characteristics of the single-layer ITO structure are characterized based on the simulation software CST Microwave Studio.

[0058] by Figure 4 Take the symmetrical four-trapezoidal combined patch ITO structure in , as an example, first determine the influence of thickness and period on the absorbing performance, in order to distinguish it from the final multi-layer absorber unit structure, here use t 1 and p 1 represent the thickness and period of the single-layer ITO structure, respectively. Such as Figure 5 As shown in (a), with the thickness t 1 The increase of the operating frequency band gradually shifts to lo...

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Abstract

The invention belongs to the technical field of metamaterial wave absorption, and particularly relates to a multi-layer broadband metamaterial wave absorber based on a multimode resistor and a design method of the multi-layer broadband metamaterial wave absorber. The metamaterial wave absorber is an array formed by periodically extending wave absorber units along x and y directions, and the period is p; each wave absorber unit is formed by stacking a bottom metal floor and three layers of wave absorbing layer-dielectric plates; the wave absorbing layer is an ITO resistive film printed on the PET film; the top layer of each wave absorber unit is of an annular zigzag line ITO structure, the middle layer of each wave absorber unit is of a square patch structure, and the bottom layer of each wave absorber unit is of a symmetrical four-trapezoid combined patch structure; two adjacent layers of PET films are separated by a dielectric plate; the bottoms of the units are metal floors; and the unit structures are in central symmetry; The structural parameters of the wave absorber unit are determined through optimization design, so that the metamaterial wave absorber shows excellent broadband wave absorbing performance under excitation of TE and TM polarized waves, and has angle insensitivity under TM polarization; the thickness is small, the structure is simple, and machining is convenient.

Description

technical field [0001] The invention belongs to the technical field of metamaterial wave absorption, and specifically designs a multi-layer broadband metamaterial wave absorber based on multimode resistance and a design method thereof. Background technique [0002] The modern warfare environment is becoming more and more complex, and the requirements for the stealth performance and electromagnetic compatibility of weapons and equipment on the battlefield are also increasing. Traditional radar absorbing materials have been difficult to meet the requirements of "thin, light, wide, and strong". With the development of science and technology, problems such as multi-antenna interference, electromagnetic radiation and pollution are becoming more and more serious in the application scenario of the Internet of Everything. Metamaterial wave-absorbing technology can not only provide solutions for stealth technology and electromagnetic compatibility, but also suppress electromagnetic r...

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Application Information

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IPC IPC(8): H01Q17/00
CPCH01Q17/008
Inventor 许河秀王彦朝王朝辉逄智超徐健徐硕
Owner AIR FORCE UNIV PLA
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