Concave-convex curved carpet stealth garment and design method thereof
A design method and the technology of the cloak, which is applied in the field of metasurface cloaking, can solve problems such as non-conformity, inability to realize the stealth of the concave shape target, and affecting the working performance of the carpet cloak
Active Publication Date: 2021-10-15
AIR FORCE UNIV PLA
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Problems solved by technology
[0003] However, due to the limitation of engineering processing technology, most of the reported metasurface carpet cloaks are spliced by two-dimensional planar structures, and the edges and corners generated at different splicing positions seriously affect the working performance of carpet cloaks.
Even though there have been reports on the vaulted carpet cloak, the cloak still cannot achieve the invisibility of the concave shape target
More importantly, this stitching structure cannot achieve conformality with cloaked targets with arbitrary shapes, which severely limits the application of metasurface carpet cloaks in complex electromagnetic environments.
Method used
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Embodiment 1
[0089] In order to carry out experimental verification, utilize the design method in the present invention to process a concave-convex curved carpet invisibility cloak sample and carry out experimental test. The processing process mainly includes two parts: first, the metal unit structure on the top layer is printed on the F4B ultra-thin and ultra-thin dielectric board with a thickness of 0.1mm by using PCB technology. Then, 3D printing technology was used to process the ABS-M30 resin dielectric plate with a middle thickness of 3mm. The dielectric constant of ABS-M30 was 2.7 and the electric tangent loss was 0.005. Finally, assemble the above parts by hand. The detailed sample diagram and assembly process of each part are attached Figure 14 shown. When assembling each part of the samples, use A-B glue to glue each sample together. First, stick the ultra-thin copper foil to the bottom of the 3D printing medium plate; then, stick the ultra-thin top layer structure to the corr...
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Abstract
The invention discloses a concave-convex curved carpet stealth garment and a design method thereof. The concave-convex curved carpet stealth garment is formed by periodically extending and arranging M*N metasurface units in space at equal intervals, each metasurface unit comprises three layers of structures from top to bottom, the first layer is an ultra-thin dielectric plate printed with double-ring metal resonators, the second layer is a resin dielectric layer, and the third layer is an ultrathin metal plate; the ultrathin dielectric plate is conformally arranged on the resin dielectric layer, and the ultrathin metal plate is conformally arranged at the bottom of the resin dielectric layer; the resin dielectric layer is of a curved surface structure and is prepared and processed through a 3D printing technology; and a double-ring metal resonator is printed on one side of the ultrathin dielectric plate of each metasurface unit through the PCB technology, and the other side of the ultrathin dielectric plate of each metasurface unit is fully corroded. The concave-convex curved carpet stealth garment can be conformal with a hidden target with any shape, and the phenomenon that the working performance of the carpet hiding garment is affected by edges and corners generated at the splicing position of an existing two-dimensional plane splicing structure can be avoided.
Description
technical field [0001] The invention relates to the technical field of supersurface invisibility, in particular to a concave-convex curved carpet invisibility cloak and a design method thereof. Background technique [0002] Metasurfaces have attracted extensive attention in the field of electromagnetic engineering because of their unique electromagnetic properties and powerful electromagnetic manipulation capabilities. Compared with three-dimensional metamaterials, the advantages of supersurface thin profile, light weight, easy commonality and easy integration are applied in the design of various electromagnetic devices and the improvement of equipment combat effectiveness, such as superlenses, polarization converters, etc. and vortex beam generators, etc. Among them, in order to improve the combat effectiveness and survivability of the equipment on the battlefield, the radar stealth technology based on the metasurface provides the possibility for the equipment to detect an...
Claims
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IPC IPC(8): H01Q15/00F41H3/02G06F30/20G06F113/12
CPCH01Q15/004F41H3/02G06F30/20
Inventor王朝辉逄智超王明照王少杰李正杰
OwnerAIR FORCE UNIV PLA