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An omnidirectional matching stealth structure based on a non-uniform Fabry-Perot resonator array

A Perot resonant cavity, non-uniform technology, applied in the direction of antennas, electrical components, etc., can solve the problems that hinder the perfect stealth structure, and achieve the effect of simple structure

Active Publication Date: 2022-08-09
ZHEJIANG UNIV
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  • Description
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Problems solved by technology

The above-mentioned extreme parameters, superluminal transmission, omnidirectional perfect matching and transparency and other harsh conditions have long hindered the perfect stealth structure from theory to reality

Method used

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  • An omnidirectional matching stealth structure based on a non-uniform Fabry-Perot resonator array
  • An omnidirectional matching stealth structure based on a non-uniform Fabry-Perot resonator array
  • An omnidirectional matching stealth structure based on a non-uniform Fabry-Perot resonator array

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specific Embodiment

[0051] Specific embodiment: the cross-sectional structure of the cylinder of the present invention is as follows figure 1 As shown, 8 groups of 100 copper sheets in area 1 of different sizes and 100 copper sheets of 0.03m in area 2 of the same size form a structure with a large square annular cylinder cavity containing a small square cylinder cavity according to a certain gap. , the outer side length of the large square annular cylinder cavity is 0.13658m, and the outer side length of the small square cylinder cavity is 0.052m. At the same time, if figure 1 As shown in the upper left corner, the metal sheet in area 1 and the medium filled between the metal sheets in different proportions can be divided into two parts (I, II) that are completely symmetrical up and down. Each of the four sides of the large square annular cylinder cavity and the four sides of the small square cylinder cavity includes a square cylinder cavity invisible area cavity, and the side length of the invi...

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Abstract

The invention discloses an omnidirectional matching stealth structure based on a non-uniform Fabry-Perot resonator array. The small square cylinder cavity, the medium and large square annular cylinder cavity are arranged in sequence from the inside to the outside, the square cylinder invisible area cavity is opened in the middle square annular cylinder cavity and the large square annular cylinder cavity; A plurality of metal sheets with uniform spacing are arranged to form a uniform Fabry-Perot resonant cavity array; in the large square annular cylindrical cavity, a plurality of metal sheets with non-uniformly spaced distribution are arranged along the diagonal to form a non-uniform Fabry Perot resonator array; slow light velocity materials are arranged in a small square cylindrical cavity; TM waves incident from the cylindrical surfaces around the cylindrical structure that omnidirectionally match the overall stealth structure can completely penetrate the structure. The invention has the advantages of simple structure, thin thickness, light weight, matching with free space, and can be widely used in the fields of radar target modeling and sensing.

Description

technical field [0001] The invention belongs to a stealth structure in the field of artificial electromagnetic medium, in particular to an omnidirectional matching stealth structure based on a non-uniform Fabry-Perot resonator array. Background technique [0002] Since Pendry et al. proposed a perfect electromagnetic stealth structure based on the transformation optics method, the use of artificial electromagnetic materials to design stealth structures has become a research focus of scientists in related fields in the world. From the DC to the optical band, electromagnetic stealth structures covering various frequency bands and suitable for various polarized waves have been successively proposed and demonstrated experimentally. However, an ideal all-parameter electromagnetic stealth structure that can achieve omnidirectional perfect matching in free space has not been realized so far. The fundamental reason is that the omnidirectional perfect matching stealth structure need...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/14H01Q17/00
CPCH01Q15/14H01Q17/00
Inventor 胡晓俊叶德信
Owner ZHEJIANG UNIV
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