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Conformal electromagnetic stealth metasurface and design method thereof

A design method and metasurface technology, applied in the direction of electrical components, antennas, etc., can solve the problem of lack of electromagnetic stealth metasurface, etc., and achieve the effect of reducing array element arrangement time, expanding frequency range, and improving accuracy

Pending Publication Date: 2021-12-03
中国人民解放军92728部队
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Problems solved by technology

[0009] The purpose of the present invention is to provide a conformal electromagnetic stealth metasurface and its design method, so as to solve the current problem of lacking in designing electromagnetic stealth metasurfaces for arbitrary curved surface targets

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  • Conformal electromagnetic stealth metasurface and design method thereof
  • Conformal electromagnetic stealth metasurface and design method thereof
  • Conformal electromagnetic stealth metasurface and design method thereof

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Embodiment Construction

[0042] The following will combine Figure 1 to Figure 18 The conformal electromagnetic stealth metasurface of the present invention and its design method are further described in detail.

[0043] The conformal electromagnetic stealth metasurface design method of the present invention comprises the following steps:

[0044] Step 1, design a planar checkerboard metasurface structure as a backup according to the required stealth performance index, and obtain key structural parameters;

[0045] The key structural parameters include: metal ground layer thickness h_bottom, dielectric layer thickness h_subs, microstrip patch thickness h_patches, length a and width b of microstrip patch unit, each square electromagnetic bandgap structure (Electromagnetic band-gap, Abbreviated as EBG) the number k of microstrip patch units included on one side;

[0046] The microstrip patch unit is divided into several categories according to the shape of the microstrip patch, and a code is assigned ...

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Abstract

The invention relates to a conformal electromagnetic stealth metasurface and a design method thereof. The design method comprises the steps of: designing a plane chessboard type metasurface structure according to a needed stealth performance index, and acquiring a key structure parameter; generating a metal ground layer of the metasurface on the surface of a target curved surface, and then generating a dielectric layer of the metasurface on the metal ground layer; flattening the outer surface A of the dielectric layer into a plane B; completely covering the plane B with a rectangular plane C; equally dividing the rectangular plane C into m*n grids, designing an arrangement mode of a square electromagnetic band gap structure on the rectangular plane C by using a chaotic system, and arranging microstrip patches on the rectangular plane C according to the arrangement mode; according to a relationship between the plane B and the rectangular plane C, acquiring an arrangement scheme of the microstrip patches on the plane B, and arranging the microstrip patches on the plane B according to the scheme; and restoring the plane B on which the microstrip patches are arranged to a curved surface A form to finish the design. According to the design method, the problem that the electromagnetic stealth metasurface is not designed for any curved surface target at present is solved.

Description

technical field [0001] The invention relates to the technical field of electromagnetic stealth, in particular to designing a conformal electromagnetic stealth metasurface for an arbitrary curved surface target. Background technique [0002] Metasurface is a kind of sub-wavelength artificial periodic structure, which can realize the redirection or diffuse reflection of electromagnetic waves by adjusting the structure and arrangement of constituent units. The original form of the metasurface is to periodically arrange metal patches of different shapes and sizes on a dielectric material sheet with a "ground". These different patches form units with the substrate and the "ground" and have different electromagnetic reflection phase. These phases are usually designed to differ by about 180°, so that the interference of the reflected waves is destructive, forming diffuse reflection, and achieving the purpose of electromagnetic stealth. [0003] In addition, wave absorption is als...

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Application Information

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IPC IPC(8): H01Q15/00
CPCH01Q15/0086H01Q15/0046Y02D30/70
Inventor 涂建军李超左钰孟田珍王凌
Owner 中国人民解放军92728部队
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