Wave-absorbing metamaterial

Abstract

The invention relates to a wave-absorbing metamaterial comprising at least two metamaterial sheet layers which are overlapped together. Each metamaterial sheet layer comprises a first base plate and a second base plate arranged in an oppositive mode and a plurality of artificial microstructures which are arranged between the first base plate and the second base plate and in an array. Each of the artificial microstructures, the portions, corresponding to each artificial microstructure, of the first base plate and the second base plate are defined as one metamaterial unit. Each of the metamaterial sheet layers can be regarded as being formed by arranging the metamaterial units in an array mode. When electromagnetic waves enter the wave-absorbing metamaterial, by means of the coupling of the plurality of artificial microstructures, the incoming electromagnetic waves can be not reflected as much as possible and enter the inside of the wave-absorbing metamaterial to the maximum extent. In addition, high losses are produced by means of the resonance of the wave-absorbing metamaterial, so that the incoming electromagnetic waves can be attenuated rapidly in large amounts and transformed into heat energy or other energy and a good wave-absorbing effect is achieved. In addition, the electromagnetic waves which are not absorbed transmit out from the other side opposite to the incidence side of the electromagnetic waves, so that different application requirements are met.

Description

technical field

[0001] The invention relates to the field of electromagnetic communication, and more specifically, to a wave-absorbing metamaterial. Background technique

[0002] With the rapid development of electronic technology, the application of electromagnetic waves has become more and more extensive, which has brought many conveniences to people's lives, but at the same time, electromagnetic radiation is also increasing, and the problem of electromagnetic pollution has attracted more and more attention. Therefore, the development of wave-absorbing materials that can resist and weaken electromagnetic radiation has become a major topic in material science, and from another aspect, wave-absorbing materials are also a kind of electromagnetic stealth materials, which are widely used in many fields including military affairs. demand.

[0003] The working principle of the wave-absorbing material is to let the electromagnetic wave projected onto its surface propagate accordi...

Examples

Embodiment Construction

[0024] In order to overcome the deficiencies of the prior art, the present invention uses a mirror image layer identical to the metamaterial sheet to replace the metal coating on the outermost metamaterial sheet, and provides a new wave-absorbing metamaterial. For details, please refer to figure 1 , the absorbing metamaterial 10 includes at least two metamaterial sheets 12 stacked together along a direction perpendicular to the sheet surface. figure 1 Shown in is the situation where two metamaterial sheets 12 are directly attached to each other on the front and rear surfaces. In practice, the number of the metamaterial sheets 12 can be increased or decreased according to requirements. Each metamaterial The sheets 12 can also be arranged and assembled together at equal intervals. Generally, we artificially divide each metamaterial sheet 12 into several metamaterial units 14, and allow the size of each metamaterial unit 14 to be less than one-fifth, preferably one-tenth, of the...

technical field

[0001] The invention relates to the field of electromagnetic communication, and more specifically, to a wave-absorbing metamaterial. Background technique

[0002] With the rapid development of electronic technology, the application of electromagnetic waves has become more and more extensive, which has brought many conveniences to people's lives, but at the same time, electromagnetic radiation is also increasing, and the problem of electromagnetic pollution has attracted more and more attention. Therefore, the development of wave-absorbing materials that can resist and weaken electromagnetic radiation has become a major topic in material science, and from another aspect, wave-absorbing materials are also a kind of electromagnetic stealth materials, which are widely used in many fields including military affairs. demand.

[0003] The working principle of the wave-absorbing material is to let the electromagnetic wave projected onto its surface propagate accordi...

Examples

Embodiment Construction

[0024] In order to overcome the deficiencies of the prior art, the present invention uses a mirror image layer identical to the metamaterial sheet to replace the metal coating on the outermost metamaterial sheet, and provides a new wave-absorbing metamaterial. For details, please refer to figure 1 , the absorbing metamaterial 10 includes at least two metamaterial sheets 12 stacked together along a direction perpendicular to the sheet surface. figure 1 Shown in is the situation where two metamaterial sheets 12 are directly attached to each other on the front and rear surfaces. In practice, the number of the metamaterial sheets 12 can be increased or decreased according to requirements. Each metamaterial The sheets 12 can also be arranged and assembled together at equal intervals. Generally, we artificially divide each metamaterial sheet 12 into several metamaterial units 14, and allow the size of each metamaterial unit 14 to be less than one-fifth, preferably one-tenth, of the...

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