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Microwave band polarization insensitive six-frequency band metamaterial wave absorber

A microwave band and wave absorber technology, applied in the field of artificial electromagnetic materials, can solve the problems of less absorption frequency band, insensitivity to polarization, low absorption efficiency, etc., and achieve the effect of easy integration and reduction of unit area.

Active Publication Date: 2017-10-17
SOUTHWEST UNIVERSITY
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the traditional metamaterial absorber has less absorption frequency band, low absorption efficiency, and sensitivity to the polarization direction of incident electromagnetic waves, and provides a multi-mode resonator-based multi-mode resonator that works in the microwave band with different polarization Six-band metamaterial absorber with sensitive properties

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  • Microwave band polarization insensitive six-frequency band metamaterial wave absorber
  • Microwave band polarization insensitive six-frequency band metamaterial wave absorber
  • Microwave band polarization insensitive six-frequency band metamaterial wave absorber

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Embodiment Construction

[0027] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be described in more detail below in conjunction with specific embodiments.

[0028] like figure 1 As shown, the six-band absorber based on four multimode Ω-shaped resonators proposed by the present invention is composed of multiple absorbing units 1 in a periodic matrix arrangement in the same plane, and the absorbing units 1 extend periodically in the horizontal and vertical directions. The number of repetitions is the same, and the number of repeated units is not less than 100 (10×10). In this embodiment, the number of repeated units is 100 (10×10).

[0029] The outer contour of the wave-absorbing unit 1 is a square, which is a "sandwich" structure composed of a resonant unit 1-1 on the top layer, a dielectric substrate 1-2 in the middle and a metal bottom plate 1-3 on the bottom layer. The top layer resonant unit 1-1 is attached to the ...

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Abstract

The present invention relates to a microwave band polarization insensitive six-frequency band metamaterial wave absorber. The metamaterial wave absorber is composed of a top resonant element, a medium substrate and a metal bottom plate, the top resonant element and the metal bottom late are attached on the upper and lower surfaces of the medium substrate respectively, the top resonant element is composed of four multimode omega-shaped resonators which are placed at the upper, lower, left and right edges of the medium substrate symmetrically and are totally same, and the multimode omega-shaped resonators can show a plurality of different absorption peaks under the horizontal polarization and the vertical polarization. The metamaterial wave absorber provided by the present invention has the characteristics of high wave absorption rate and insensitive polarization, also has six wave absorption peak points, and has the very high engineering application value.

Description

technical field [0001] The invention relates to a metamaterial wave absorber, in particular to a six-band metamaterial wave absorber, which belongs to the field of artificial electromagnetic materials. Background technique [0002] Artificial electromagnetic metamaterial is a new type of artificial composite material, which has extraordinary physical properties of negative equivalent magnetic permeability and negative equivalent permittivity. Taking advantage of this physical property, it is possible to design devices whose structure size is much smaller than the working wavelength. Compared with ordinary dielectric materials, this material has the characteristics of thin thickness, small size and easy integration. [0003] In 2008, Landy et al. introduced artificial electromagnetic metamaterials into the field of wave absorbers for the first time, and achieved perfect absorption of electromagnetic waves at a single frequency point. This kind of absorber based on artificia...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q17/00
CPCH01Q17/008
Inventor 黄杰徐国庆琚宗德魏治华李晶
Owner SOUTHWEST UNIVERSITY
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