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Crown-shaped regulable plasma meta-material broadband wave absorber

A plasma and wave absorber technology, applied in the fields of microwave devices and radio communications, can solve the problems of complex control circuits, difficulty in obtaining a tunable absorption spectrum for the wave absorber, disadvantages, etc., and achieves flexible design, improved absorption rate and Absorption efficiency, strong functional effect

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

However, it is difficult to obtain a tunable absorption spectrum for a metamaterial absorber in the traditional sense. To obtain a tunable absorption spectrum, a large number of lumped components have to be introduced, the control circuit is complicated, and it is not conducive to integration and chip-based integrated manufacturing.

Method used

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  • Crown-shaped regulable plasma meta-material broadband wave absorber
  • Crown-shaped regulable plasma meta-material broadband wave absorber
  • Crown-shaped regulable plasma meta-material broadband wave absorber

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Embodiment Construction

[0036]Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0037] The present invention is a crown-type controllable plasma metamaterial broadband wave absorber, whose periodic structural unit adopts a diagonally symmetrical structure, and its structure consists of a bottom reflection plate, a dielectric substrate, a solid-state plasma resonance unit and a programmable logic Composed of an array-controlled plasma excitation source, the bottom reflection plate is provided with a dielectric substrate (FR-4 with a large loss tangent), and a solid-state plasma resonance unit is provided on the dielectric substrate, and the plasma resonance unit passes through The plasma excitation source is connected for excitation, and the on-off of each plasma excitation source is controlled by a programmed control logic array. In the present invention, the solid-state plasma excitation source is controlled by a programmable ...

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Abstract

The invention discloses a crown-shaped regulable plasma meta-material broadband wave absorber of which the structure comprises a bottom metal reflecting plate and a dielectric substrate and solid state plasma resonant units which are arranged on the bottom metal reflecting plate. The solid state plasma resonant units have two working states: the excited state and the non-excited state. The plasmameta-material broadband wave absorber has great absorbing effect for the TE polarized waves and the TM polarized waves and controls the excitation area of the resonant units formed by the solid stateplasma to realize excitation of different resonant units through programming so as to achieve the objective of dynamic regulation and control of different frequency of the wave absorber and realize broadband absorbing of the wave absorber; besides, the working frequency of the wave absorber can cover the whole X band under the condition of appropriate selection of the excitation area.

Description

technical field [0001] The invention relates to a crown-shaped adjustable plasma metamaterial broadband wave absorber, which belongs to the field 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. The wavelength of the plasmonic polarized wave is much shorter than that of the incident light, and the plasmonic metamaterial consists of composite materials; it is made of metals and dielectrics engineered to achieve properties not found in nature. This property arises from the single structure of the composite, which is characterized by sub-wavelength distances. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q17/00G02B5/00
CPCG02B5/003H01Q17/007H01Q17/008
Inventor 章海锋刘佳轩张浩杨靖
Owner NANJING UNIV OF POSTS & TELECOMM
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