Multilayer structure plasma meta-material tunable ultrawide-band wave absorber

A plasma and multi-layer structure technology, applied in instruments, optics, electrical components, etc., can solve the problems of discontinuous absorption frequency dispersion and inability to achieve continuous absorption, and achieve the effect of flexible design, strong functionality and popular structure

Active Publication Date: 2018-06-19
NANJING UNIV OF POSTS & TELECOMM +1
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Problems solved by technology

The specific absorption frequency of general multi-frequency absorber is scattered an

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  • Multilayer structure plasma meta-material tunable ultrawide-band wave absorber
  • Multilayer structure plasma meta-material tunable ultrawide-band wave absorber
  • Multilayer structure plasma meta-material tunable ultrawide-band wave absorber

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[0030] The technical scheme of the present invention will be further described in detail below in conjunction with the accompanying drawings:

[0031] The present invention is a plasma metamaterial tunable ultra-wideband wave absorber with a multilayer structure, such as Figure 1 to 6 As shown, the structure is composed of a bottom reflector, a dielectric substrate, a solid plasma resonance unit and a plasma excitation source controlled by a programmable logic array. The bottom reflector is provided with a dielectric substrate, which has a large loss For FR-4 with tangent angle, solid plasma resonance units are provided inside the dielectric substrate and on the surface of the dielectric substrate. The "Y"-shaped resonance units inside the dielectric substrate are respectively connected to the bottom reflector and the upper resonance unit through solid plasma columns. The solid plasma resonance unit on the surface of the dielectric substrate is composed of an equilateral triangu...

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Abstract

The invention discloses a multilayer structure plasma meta-material tunable ultrawide-band wave absorber of which the structure comprises a bottom metal reflecting plate, a dielectric substrate whichis arranged on the metal plate, solid state plasma resonant units which are arranged on the dielectric substrate, "Y"-shaped solid state plasma resonant units which are arranged in the dielectric substrate and solid state plasma columns which connect all the resonant units. The wave absorber has great absorbing effect for the TE polarized waves and controls the excitation area of the resonant units formed by the solid state plasma to realize excitation of different resonant units through programming so as to achieve the objective of dynamic regulation and control of different frequency of thewave absorber and realize ultrawide-band absorbing of the wave absorber; besides, the working frequency of the wave absorber can cover the whole Ku band under the condition of appropriate selection ofthe excitation area, and absorbing of low frequency electromagnetic waves can also be realized under the condition of small physical size.

Description

technical field [0001] The invention relates to a plasma metamaterial tunable ultra-broadband wave absorber with a multilayer structure, belonging to the fields of radio communication and microwave devices. Background technique [0002] Plasmonic metamaterials are metamaterials that exploit surface plasmons generated due to the interaction of light and metal-dielectric materials. Under special conditions, incident light and surface plasmons couple to generate self-sustaining and propagating electromagnetic waves called surface plasmon polaritons. Once such a wave is formed, it propagates along the metal-dielectric interface. Compared with the incident light, the wavelength of the plasmonic polarized wave is much shorter, and the plasmonic metamaterial is composed of composite materials, which are designed with metals and dielectrics to achieve properties that are not found in nature. This property arises from the single structure of the composite, which is characterized by...

Claims

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Application Information

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IPC IPC(8): H01Q17/00G02B5/00
CPCG02B5/003H01Q17/007H01Q17/008
Inventor 章海锋张浩杨靖刘佳轩
Owner NANJING UNIV OF POSTS & TELECOMM
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