Optical transparent broadband wave absorber with high wave absorption rate

An optically transparent, wave-absorbing technology, applied in the field of electromagnetic fields and microwaves, can solve the problems of narrow band, single function, low efficiency, etc., and achieve the effects of good polarization insensitivity, good incident angle stability, and good RCS reduction performance.

Pending Publication Date: 2022-03-25
杭州湃腾科技有限公司
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Problems solved by technology

[0006] At present, there are still problems to be solved urgently in the work of using metasurface absorbers to reduce RCS, such as narrow band, low efficiency and single function.

Method used

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  • Optical transparent broadband wave absorber with high wave absorption rate
  • Optical transparent broadband wave absorber with high wave absorption rate
  • Optical transparent broadband wave absorber with high wave absorption rate

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Embodiment Construction

[0046] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, where the schematic embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0047] refer to figure 1 , an optically transparent broadband high absorption rate absorber provided by an embodiment of the present invention is composed of N×M absorber units arranged in an array, wherein N≥10 columns and M≥10 rows. The absorber unit includes a top PET medium layer 2 , an air layer, a middle PET medium layer 4 , an air layer and a bottom PET medium layer 6 . Both the top layer PET medium layer 2 and the middle layer PET medium layer 4 use the PET medium layer as the base, and the upper surface of the medium layer is the top patterned ITO resistance film layer 1; the middle of the bottom PET medium layer 6 is a PET medium layer, and on the medium layer The surface is a ...

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Abstract

The invention discloses an optical transparent broadband high-wave-absorbing-rate wave absorber which is composed of N * M wave absorber units arranged in an array. Each wave absorber unit comprises a top PET dielectric layer, a middle PET dielectric layer, a bottom PET dielectric layer and a middle air layer. Each dielectric layer comprises a dielectric plate and a patterned ITO resistive film layer printed on the dielectric plate, and the bottom PET dielectric layer further comprises a bottom ITO resistive film layer; the ITO resistive film layer pattern of the top PET dielectric layer is of a square bent ring structure; patterns of the middle PET dielectric layer and the ITO resistive film layer are regular octagonal rings and internal interdigital structures; patterns of the bottom PET dielectric layer and the ITO resistive film layer are of a square ring structure; according to the wave absorber unit, multi-frequency-point superposition is achieved through structures of different sizes, broadband, high-efficiency wave absorption and high light transmittance are both considered in a broadband, and good RCS reduction performance is achieved.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic fields and microwaves, in particular to an optically transparent broadband high absorbing rate absorber. The invention has the characteristic of optical transparency, realizes the high-efficiency absorption of electromagnetic waves in a wide frequency band, and can be used for carrier platforms and antenna systems with low scattering requirements. Background technique [0002] With the continuous development of radar detection technology, the battlefield survivability of stealth targets has been seriously threatened. In order to improve the stealth performance of the target, it is necessary to study the scattering characteristics of the target, and the key index to measure the scattering characteristics of the target is the radar cross section (RCS). The lower the RCS, the better the stealth performance. In recent years, electromagnetic metasurfaces have attracted the attention of scienti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q17/00
CPCH01Q17/00
Inventor 蒲彦姜文张浩宇黄善智高雨辰洪涛
Owner 杭州湃腾科技有限公司
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