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A metamaterial absorber

A technology of wave absorbers and metamaterials, applied in the field of metamaterials, can solve the problems of low absorption rate, insufficient absorption rate, insufficient working frequency bandwidth, etc., and achieve the effect of high absorption rate

Active Publication Date: 2019-12-27
NANJING UNIV OF SCI & TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] However, the technical problems of the above-mentioned metamaterial absorber are: the absorption rate is not high enough, the working bandwidth is not wide enough, especially the absorption rate is lower under large-angle incident waves

Method used

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  • A metamaterial absorber
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Embodiment Construction

[0019] The metamaterial absorber of the present invention is an infinite period structure, including a plurality of absorbing units arranged continuously.

[0020] Each absorbing unit is as figure 1 , 2 , 3, including a dielectric substrate 3 and a metal ground plate 4 that is closely attached to the lower surface of the dielectric substrate 3, an open metal ring 1 is attached to the upper surface of the dielectric substrate 3, and the opening of the metal ring 1 A lumped resistor 2 is provided, and both ends of the lumped resistor 2 are respectively connected to the metal rings 1 on both sides of the opening.

[0021] The outer periphery of the metal ring (1) is square, and the inner space is circular, and the geometric centers of the square and the circle overlap.

[0022] The metal ring (1) is provided with two symmetrical openings about the center of the circle, both of which are opened on the side of the inner hollow circle closest to the outer square.

[0023] The use...

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Abstract

The invention discloses a metamaterial wave absorber. The metamaterial wave absorber comprises multiple wave absorbing units which are arranged continuously, wherein each wave absorbing unit comprises a dielectric substrate (3) and a metal earth plate (4) tightly attached to the lower surface of the dielectric substrate (3), an open metal ring (1) is attached to the upper surface of the dielectric substrate (3), lumped resistors (2) are arranged at openings of the metal ring (1), and two ends of each lumped resistor (2) are connected with the metal ring (1) on two sides of the corresponding opening respectively. The metamaterial wave absorber is high in absorption rate and wide in working band.

Description

technical field [0001] The invention belongs to the technical field of metamaterials, in particular to a metamaterial absorber with high absorption rate and wide operating frequency band. Background technique [0002] Electromagnetic metamaterials have always been a hot spot in the research fields of physics and materials science due to their unique electromagnetic properties. Since electromagnetic metamaterials can realize negative permittivity and negative magnetic permeability at the same time, electromagnetic metamaterials ushered in a period of rapid development. In just a few decades, the theoretical research of metamaterials has become more and more mature, and its applications have become more and more extensive, covering various fields such as military, industry and life. Among them, metamaterial absorbers, as an application of metamaterials in the microwave-absorbing neighborhood, have gained a lot of attention. Widespread concern. [0003] Traditional metamateri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q17/00
CPCH01Q17/00
Inventor 于榭彬宋耀良范事成
Owner NANJING UNIV OF SCI & TECH
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