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Single-layered broadband random surface

A random surface, single-layer technology, applied in electrical components, antennas, etc., can solve the problems of increasing the weight, volume and surface maintenance of the target, and achieve the effect of good random scattering effect, easy conformality, and simple structure.

Active Publication Date: 2014-01-01
SOUTHEAST UNIV
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  • Abstract
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Problems solved by technology

On the other hand, the use of RAM is also at the cost of increasing target weight, volume and surface maintenance issues, which have many limitations in practical applications

Method used

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Experimental program
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Embodiment Construction

[0027] The wind-shaped single-layer wide-band random surface proposed by the present invention is composed of wind-shaped unit arrays with random sizes, which is similar to the planar reflection array structure.

[0028] The single-layer broadband random surface is an artificial electromagnetic surface based on random scattering theory. Its unit structure is composed of a wind-type resonant unit and a metal backplane as shown in Figure 1. The two-layer structure is separated by a dielectric substrate. The wind-shaped resonant unit is composed of a regular square ring at the center and a square ring with branches at the periphery. It is a typical double-resonant structural unit. By rationally designing the width of the metal ring, the size of the gap between the rings and the thickness of the dielectric substrate, the The inner ring and outer ring of the wind-type unit resonate at close frequency points respectively, so as to realize double resonance and widen the bandwidth of t...

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Abstract

The invention discloses a single-layered broadband random surface. The random surface comprises a dielectric substrate (2), a windmill metal patch 1 basic unit (1) and a metal floor (3), wherein the windmill metal patch 1 basic unit (1) and the metal floor (3) are respectively coated on the upper surface and lower surface of the dielectric substrate (2); the metal floor (3) is used for preventing electromagnetic wave transmission; the basic unit (1) is formed by using a single-layered double-resonance unit with a randomly distributed size, and composed of a regular square ring located in the center of the unit and a branch-containing square ring located at the periphery of the regular square ring. The random surface disclosed by the invention can be used for effectively reducing the RCS (radar cross-section) of a two-dimensional metal target body in an X waveband; the random surface is simple in manufacturing and easy to operate; the random surface has absolute advantages in comparison with previous multilayer modes, so that the random surface has extremely high application prospect in practice.

Description

technical field [0001] The invention relates to a single-layer broadband RCS (Radar Cross Section) reduction surface for microwave frequency bands, belonging to the field of radar stealth and new artificial electromagnetic materials. Background technique [0002] The new artificial electromagnetic materials (Metamaterials) involved in the present invention are composed of periodic arrangement of sub-wavelength unit structures of a certain scale. By manually designing the unit structure, the equivalent dielectric constant, magnetic permeability, refractive index and wave impedance of the material can be controlled. And other electromagnetic parameters, realize the properties that the materials that exist in nature do not have. With the deepening of theoretical research and application development of new artificial electromagnetic materials, its application in the field of radar stealth has also aroused the interest of many researchers. [0003] The method of radar stealth is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
Inventor 程强陈洁赵捷董荻莎崔铁军
Owner SOUTHEAST UNIV
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