A multilayer structure plasmonic metamaterial tunable ultra-broadband absorber

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

Active Publication Date: 2021-01-12
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 and discontinuous, and cannot achieve continuous absorption in a certain frequency band.

Method used

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  • A multilayer structure plasmonic metamaterial tunable ultra-broadband absorber
  • A multilayer structure plasmonic metamaterial tunable ultra-broadband absorber
  • A multilayer structure plasmonic metamaterial tunable ultra-broadband absorber

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0031] A plasma metamaterial tunable ultra-broadband wave absorber with a multilayer structure of the present invention, such as Figures 1 to 6 As shown, its structure is composed of a bottom reflection plate, a dielectric substrate, a solid-state plasma resonance unit and a plasma excitation source controlled by a programmable logic array. The bottom reflection plate is provided with a dielectric substrate, and the dielectric substrate has a large loss For FR-4 with tangent angle, solid-state plasma resonant units are installed inside the dielectric substrate and on the surface of the dielectric substrate respectively. The “Y” type resonant unit inside the dielectric substrate is connected to the bottom reflection plate and the upper resonant unit through solid-state plasma columns respectively. The solid-state plasma resonance unit on the surfac...

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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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Patent Type & Authority Patents(China)
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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