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Broadband radar cross-sectional area reduction metasurface with reflection and scattering properties

A technology of scattering cross-sectional area and broadband radar, applied in the microwave field, can solve the problem of single function and achieve the effect of high precision and low cost

Pending Publication Date: 2022-03-22
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

But unfortunately, these metasurfaces with reduced RCS usually have only a single function or only work in a single frequency band

Method used

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  • Broadband radar cross-sectional area reduction metasurface with reflection and scattering properties
  • Broadband radar cross-sectional area reduction metasurface with reflection and scattering properties
  • Broadband radar cross-sectional area reduction metasurface with reflection and scattering properties

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0026] The present invention provides a broadband RCS reducing metasurface with reflection and scattering properties. refer to figure 1 (a), figure 1 (a) is a schematic diagram of the heteromorphic metal belt with metasurface structure of the present invention. The metasurface structure unit is composed of three parts, which are the metal plate on the bottom layer, the first and second special-shaped metal strips on the upper layer and the dielectric base layer arranged between them. The overall thickness t of the unit structure is 2.3 mm, and the period p is 6.5 mm. refer to figure 1 (b), figure 1 (b) is a schematic diagram of the heteromorphic metal belt with metasurface structure of the present invention. The first special-shaped metal strip and the second special-shaped metal strip are 180° rotationally symmetrical about the center of the square ...

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Abstract

The invention discloses a broadband radar cross-sectional area reduction metasurface with reflection and scattering characteristics, which comprises a plurality of square structure units arranged in a set mode, each square structure unit comprises a bottom-layer metal plate unit, an upper-layer special-shaped metal belt unit and a dielectric substrate unit arranged between the bottom-layer metal plate unit and the upper-layer special-shaped metal belt unit; according to the invention, two special functions, namely reflection and scattering of incident electromagnetic waves, can be integrated in a relatively wide frequency band, so that the functions of specular reflection and RCS reduction are realized.

Description

technical field [0001] The invention belongs to the field of microwave technology, and relates to a broadband radar scattering cross-sectional area reduction metasurface with reflection and scattering characteristics. Background technique [0002] The rapid development of the modern electromagnetic environment puts forward more and more stringent requirements on the electronic system. Therefore, various types of metasurfaces have attracted extensive attention due to their ability to manipulate the amplitude, phase, and polarization of incident electromagnetic waves. Metasurfaces are usually composed of a series of subwavelength units with different geometric parameters, and are usually used to achieve beamforming, gain enhancement, or radar cross section (Radar Cross Section, RCS) reduction and other properties. Among them, RCS reduction is a basic requirement of most electronic systems. [0003] In recent years, encoding metasurfaces with diffuse reflection properties hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0013H01Q15/0026
Inventor 金城张彬超尹丽媛吕奇皓曹凯淇
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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