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Wave-transmitting, wave-absorbing and wave-transmitting integrated metamaterial

A metamaterial and wave-transparent technology, applied to antennas, electrical components, etc., can solve problems such as not having a wave-transmitting band, incompatible antenna work, and narrow wave-absorbing bandwidth

Active Publication Date: 2022-03-18
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a metamaterial integrating wave transmission-absorption-wave transmission, which has high electromagnetic wave transmission rate and wide absorption band, which can solve the problem of Traditional absorbing coatings have a narrow absorbing bandwidth, structural absorbing materials do not have a wave-transmitting band, and are not compatible with antenna work

Method used

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  • Wave-transmitting, wave-absorbing and wave-transmitting integrated metamaterial
  • Wave-transmitting, wave-absorbing and wave-transmitting integrated metamaterial
  • Wave-transmitting, wave-absorbing and wave-transmitting integrated metamaterial

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Embodiment 1

[0045] like figure 1 As shown, the metamaterial includes several layer structures, and it is a surface protection layer 1, an impedance matching layer 2, an electromagnetic loss metasurface 3, an electromagnetic loss metasurface substrate 4, a dielectric structure layer 5, and a lossless tape arranged in sequence from top to bottom. The pass-band-stop-band-pass metasurface-6, the lossless band-pass-band-stop-band-pass metasurface substrate 7 is formed.

[0046] The schematic diagram of the unit structure of the present invention is as figure 2 As shown, the conductive unit 1 of the electromagnetic loss metasurface 3 includes two conductive rings with the same center, which can be seen specifically image 3 , are the conductive outer ring 10 and the conductive inner ring 9 respectively; the conductive inner ring 9 is evenly loaded with 4 resistors 11 ; the conductive outer ring 10 is evenly loaded with 4 resistors 12 . The lossless bandpass-bandstop-bandpass metasurface-6 is...

Embodiment 2

[0060] The structural schematic diagram of the wave-transmitting-absorbing-wave-transmitting integrated metamaterial in this embodiment is as follows Figure 11 As shown, compared with embodiment 1, one more layer of lossless bandpass-bandstop-bandpass metasurface 28 is added in the present embodiment; it shares lossless band with lossless bandpass-bandstop-bandpass metasurface-6 Pass-band stop-band pass metasurface substrate 7 .

[0061] The schematic diagram of the unit structure of the neutralization metamaterial in this embodiment is as follows Figure 12 As shown, in terms of the structural composition of the details, there is no inductance loaded on the lossless bandpass-bandstop-bandpass metasurface-6 in this embodiment, as can be seen specifically Figure 13 , the structural formula of one layer of lossless bandpass-bandstop-bandpass metasurface 28 in this embodiment is the same as that of lossless bandpass-bandstop-bandpass metasurface 16. All the other structures a...

Embodiment 3

[0065] The structural schematic diagram of the wave-transmitting-absorbing-wave-transmitting integrated metamaterial in this embodiment is as follows Figure 11 As shown, the structure is basically the same as that of Embodiment 2, the difference is that the vertices of the conductive square ring 13 on the non-destructive band-pass-band-stop-band-pass metasurface 28 of this embodiment are loaded with resistance, specifically the metamaterial unit structure Figure 17 The concrete structure of lossless band-pass-band stop-band-pass metasurface two 8 is identical with the lossless band-pass-band stop-band-pass metasurface-6 in embodiment 1, specifically sees in embodiment 1 Figure 4 . It is consistent with the structure and embodiment 2.

[0066] The final performance of the metamaterial of this embodiment is as Figure 18 and Figure 19 As shown, metamaterials can achieve a reflectivity lower than -10dB in the 4.5GHz-12GHz frequency band; a reflectivity lower than -20dB in...

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Abstract

The invention discloses a wave transmission-wave absorption-wave transmission integrated metamaterial which comprises a surface protection layer, an impedance matching layer, an electromagnetic loss metasurface, an electromagnetic loss metasurface substrate, a dielectric structure layer, a lossless band-pass-band-stop-band-pass metasurface I and a lossless band-pass-band-stop-band-pass metasurface substrate which are sequentially arranged from top to bottom. The electromagnetic loss metasurface is composed of a plurality of first conductive units, each first conductive unit comprises a conductive outer circular ring and a conductive inner circular ring which are concentric, and the conductive outer circular rings and the conductive inner circular rings are loaded with a plurality of resistors. The first lossless band-pass-band-stop-band-pass metasurface is composed of a plurality of second conductive units, and the second conductive units are composed of first conductive square rings or first conductive square rings with inductors loaded on the vertexes. The metamaterial integrating wave transmission, wave absorption and wave transmission is adopted, the electromagnetic wave transmission rate is high, and the wave absorption band is wide.

Description

technical field [0001] The invention relates to the technical field of electromagnetic wave absorption, in particular to a metamaterial integrating wave transmission-absorption-wave transmission. Background technique [0002] In recent years, with the development of microwave technology and signal systems, the whole machine has higher and higher requirements for antenna isolation and electromagnetic shielding. On the one hand, electromagnetic shielding materials are required to ensure that the antenna is transparent in the working frequency band, and on the other hand, it is also necessary to absorb waves outside the working frequency band of the antenna. However, the early wave-absorbing structures, wave-absorbing coatings such as ferrite, carbonyl iron powder, etc., can only meet high-performance wave-absorbing in a narrow frequency band, and have almost no wave-absorbing performance in other frequency bands; structural wave-absorbing materials, such as Although Jaumann a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q17/00
CPCH01Q15/0086H01Q17/008
Inventor 姜超麻晢乂培
Owner CENT SOUTH UNIV