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Ultra-thin broadband conformal low-scattering metasurface device of microwave band

A microwave band and metasurface technology, applied in electrical components, antennas, etc., can solve the problems of high profile and narrow bandwidth of low-frequency and low-scattering devices, and achieve the effects of simple structure, reduced scattering, and wide operating frequency.

Active Publication Date: 2020-04-21
NANJING UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide an ultra-thin broadband conformal low-scattering metasurface device in the microwave band, aiming to improve the problem of high profile and narrow bandwidth of the low-frequency low-scattering device

Method used

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  • Ultra-thin broadband conformal low-scattering metasurface device of microwave band
  • Ultra-thin broadband conformal low-scattering metasurface device of microwave band
  • Ultra-thin broadband conformal low-scattering metasurface device of microwave band

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Embodiment Construction

[0015] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] Such as Figure 1 to Figure 3 As shown, this example includes a metal cylinder 1 with a height of 324 mm and a radius of 82 mm, a flexible dielectric layer 2 with a thickness of 2 mm, and a metal conformal metasurface structure layer 3 etched on the outer surface of the flexible dielectric layer. The conformal metasurface structure layer 3 in this example is made up of 9 circles of completely identical metal structures 31 that are periodically extended along the axis of the cylinder, and the distance between the centers of each circle of metal structures 31 is 90 mm; each circle of metal structures The structure is realized by periodically arranging 10 metal patch units 311 with the same structure along the circumferential direction of the cylinder. The metal patch units 311 are rotated at an angle of ...

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Abstract

The invention relates to an ultra-thin broadband conformal low-scattering metasurface device of a microwave band, and aims to solve the problems of high profile and narrow bandwidth of a low-frequencylow-scattering device. The metasurface antenna is composed of a metal cylinder and a flexible metasurface, wherein the flexible metasurface comprises a flexible dielectric layer and a conformal metasurface structure layer arranged on the outer surface of the flexible dielectric layer, the conformal metasurface structure layer is formed by carrying out finite periodic extension on a circle of metal structure along the axis direction of the cylinder, and each circle of metal structure is formed by connecting a series of metal patches which are completely the same in structure and are periodically arranged along the circumferential direction through three metal narrow-band lines. The low-scattering metasurface device provided by the embodiment of the invention can reduce scattering of an electrically large or electrically small metal target, and has the advantages of wide working frequency band, ultra-thinness, easy conformality, simple structure, low preparation cost and the like.

Description

Technical field: [0001] The invention belongs to the field of artificial electromagnetic metamaterials, in particular to an ultra-thin broadband conformal low-scattering metasurface device in the microwave band. Background technique: [0002] In recent years, the design of low-scattering devices has attracted more and more attention from the scientific community due to its important military application value. One of the key technical challenges is how to reduce the Radar-CrossSection (RCS). [0003] Traditional low-scattering devices mainly rely on the shape structure or loading radar absorbing materials to achieve RCS reduction, but the design and manufacture of such low-scattering devices are difficult, and the volume is usually not small. In recent years, metamaterials have attracted extensive attention from the scientific and industrial circles due to their ability to control electromagnetic waves arbitrarily, and their characteristics such as low loss, low profile, and...

Claims

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Application Information

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IPC IPC(8): H01Q15/00
CPCH01Q15/0086
Inventor 冯一军罗歆瑶陈克丁国文赵俊明郭文龙
Owner NANJING UNIV
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