WO2018126598A1

WO2018126598A1 - Electromagnetic pulse protection device having square structure

Info

Publication number: WO2018126598A1
Application number: PCT/CN2017/085949
Authority: WO
Inventors: 王羚; 邓力; 李书芳; 张贯京; 葛新科; 高伟明; 张红治
Original assignee: 深圳市景程信息科技有限公司
Priority date: 2017-01-07
Filing date: 2017-05-25
Publication date: 2018-07-12
Also published as: CN106714539A

Abstract

Provided in the present invention are an electromagnetic pulse protection device having a square structure. The electromagnetic pulse protection device having a square structure consists of multiple stacked square loop protection layers, and each of the loop protection layers is provided with multiple sequentially arranged protection units. The present invention can be implemented to fully reflect, absorb, or attenuate electromagnetic pulses, such that a protected object is not influenced by the electromagnetic pulses.

Description

Electromagnetic pulse protection device with regular quadrilateral structure

[0001] The present invention relates to the field of electromagnetic protection, and in particular to an electromagnetic pulse protection device with a regular quadrilateral structure.

Background technique

[0002] Electromagnetic pulses have a wide range of effects, high peak field strength, short rise time, wide frequency range, and high lethality. They not only pose a threat to the current miniaturization and integration of electronic information systems, but also The human body has caused various degrees of damage, which has become a great hidden danger. The emergence and maturity of electromagnetic pulse weapons has seriously affected the military security and social stability of countries all over the world.

[0003] Based on different uses, existing protection methods can be divided into circuit level protection methods and space level protection methods, the former for conducting electromagnetic pulses in the protection circuit and the latter for protecting the electromagnetic pulse field in the space. Circuit-level protection devices are mainly limited to amplitudes, filters, etc. Existing circuit-level protection devices are limited in protection bandwidth, there is insertion loss and insertion loss increases and noise occurs under the action of high-power electromagnetic pulses. Permanent damage such as deterioration of the coefficient. Space-level protection methods mainly include frequency selective surfaces, energy selective surfaces, metamaterial absorbers, and new materials (such as nanomaterials, graphene, plasma). Their protective bandwidth is limited, and there is no guarantee that the total reflection absorbs or attenuates the electromagnetic pulse. The protected object is more or less affected by the electromagnetic pulse, and the energy selective surface still exists before the protection function is fully activated. There is a hidden danger in the leakage of electromagnetic waves during a period of time.

technical problem

[0004] A primary object of the present invention is to provide an electromagnetic pulse protection device of a regular quadrilateral structure, which aims to solve the technical problem of shielding electromagnetic pulses.

Problem solution

Technical solution

[0005] In order to achieve the above object, the present invention provides an electromagnetic pulse protection device of a regular quadrilateral structure, wherein the electromagnetic pulse protection device of the regular quadrilateral structure is composed of a plurality of regular quadrilateral annular protection layers, each annular protection layer Setting a plurality of protection units continuously;

[0006] Each of the shielding units has a dielectric constant of ε and a magnetic permeability of μ, wherein Q

ο 1

[0008]

Wherein a is the longest distance from the center point to the inner ring, b is the longest distance from the center point to the outer ring, n is the nth side and n is less than or equal to N, N is an integer 4, and y is each The center coordinates of the guard units.

[0010] Preferably, the length, width and height of the protection unit are less than or equal to d, wherein d is calculated as follows: (1=λ/3, X=C/f, C is a constant speed of light, f The maximum frequency corresponding to the frequency range in which the electromagnetic pulse energy is concentrated.

[0011] Preferably, the electromagnetic pulse frequency is a triangular electromagnetic pulse, a rectangular electromagnetic pulse, a sinusoidal electromagnetic pulse or a Gaussian electromagnetic pulse. Advantageous effects of the invention

Beneficial effect

[0012] The present invention adopts the above technical solution, and brings the technical effects as follows: The electromagnetic pulse protection device of the regular quadrilateral structure of the invention can completely reflect, absorb or attenuate the electromagnetic pulse, and the protected object is not subjected to the electromagnetic pulse. The effect is to effectively avoid the electromagnetic pulse damage suffered by the electronic information system and prolong the life of the electronic information system.

Brief description of the drawing

DRAWINGS

1 is a schematic structural view of a preferred embodiment of an electromagnetic pulse guard of a regular quadrilateral structure of the present invention; [0014] FIG. 2 is a cross-sectional view of a preferred embodiment of an electromagnetic pulse guard of a regular quadrilateral structure of the present invention;

3 is a schematic view of a preferred embodiment of a guard unit in an electromagnetic pulse protection stealth cloak of a regular polygonal structure of the present invention;

[0016] FIG. 4-1 to FIG. 4-4 are schematic diagrams of simulating four electromagnetic pulses of an electromagnetic pulse protection device of a regular quadrilateral structure according to the present invention;

[0017] FIG. 5-1 to FIG. 5-3 are schematic diagrams showing simulations of a triangular electromagnetic pulse by an electromagnetic pulse guard of a regular quadrilateral structure of the present invention;

[0018] FIG. 6-1 to FIG. 6-3 are schematic diagrams showing simulations of a rectangular electromagnetic pulse of an electromagnetic pulse protection device of a regular quadrilateral structure of the present invention;

[0019] FIG. 7-1 to FIG. 7-3 are schematic diagrams showing simulations of a sinusoidal electromagnetic pulse of an electromagnetic pulse protection device of the regular quadrilateral structure of the present invention;

8-1 to 8-3 are schematic diagrams showing the simulation of the Gaussian electromagnetic pulse of the electromagnetic pulse guard of the regular quadrilateral structure of the present invention.

[0021] The objects, features, and advantages of the present invention will be further described in conjunction with the embodiments.

BEST MODE FOR CARRYING OUT THE INVENTION

[0022] To further illustrate the technical means and efficacy of the present invention for achieving the intended purpose of the invention, the following The specific embodiments, structures, features and effects of the present invention are described in detail below with reference to the drawings and preferred embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

1 to 3, FIG. 1 is a schematic structural view of a preferred embodiment of an electromagnetic pulse protection device of a regular quadrilateral structure of the present invention; and FIG. 2 is a perspective view of a preferred embodiment of the electromagnetic pulse protection device of the regular quadrilateral structure of the present invention. Figure 3 is a schematic view of a preferred embodiment of a guard unit in an electromagnetic pulse protection invisible cloak of a regular polygonal structure of the present invention. The electromagnetic pulse guard 1 of the regular quadrilateral structure of the present invention is composed of a plurality of regularogram annular protective layers 10 superposed.

Further, as shown in FIG. 2, each of the annular protective layers 10 includes a plurality of guard units 100. A plurality of guard units 100 are continuously disposed on each of the annular protective layers 10. Each guard unit 100 has a cube structure (i.e., length, width, and height are equal).

[0025] Each of the guard units 100 has a dielectric constant of ε and a magnetic permeability of μ.

Wherein [0026]

&

[]

[] 1

^ιΞ' Ιί― w

Where ε is the dielectric constant, μ is the magnetic permeability, a (ie, a in the formula) is the longest distance from the center point to the inner ring (as shown in FIG. 5 ), and b is the center point to the outer ring. The longest distance (as shown in FIG. 5), n is the nth side and n is less than or equal to N, N is the total number of regular polygons (in this embodiment, N is 4), and X and y are each protection unit 100. The center coordinates.

[0029] That is to say, if each of the protection units 100 is made of the above-mentioned material having a dielectric constant of ε and a magnetic permeability of μ, the protection against electromagnetic pulses can be completed. It should be noted that the dielectric constant ε and the magnetic permeability μ of the protection unit 100 at different positions on each of the annular protective layers 10 are not the same. A plurality of protection units 100 made of a plurality of different materials can form an electromagnetic pulse protection, that is, a propagation path of electromagnetic waves based on conformal transformation theory and optical transformation theory (refer to 2006, U. Leonhardt and JBPendry, respectively) In the journal Science, the theory of conformal transformation and the theory of optical transformation are proposed to guide the propagation path of electromagnetic waves to protect electromagnetic pulses. Since the conformal transformation theory and the optical transformation theory are prior art, they will not be described here. The material may be any of a variety of suitable materials such as nanomaterials, graphene materials, plasma materials, and the like.

[0030] Further, each guard unit has a length, a width and a height less than or equal to d, wherein d is calculated as follows: d= λ/3, X=C/f, C is a constant speed of light, and f is an electromagnetic pulse energy concentration. The frequency range corresponds to the maximum frequency.

(The frequency range of the electromagnetic pulse is positive infinity to negative infinity, but the energy of the electromagnetic pulse is mainly concentrated in a certain frequency range, and f is the maximum frequency corresponding to the frequency range in which the electromagnetic pulse energy is concentrated). For a rectangular pulse, a duration of 1 nanosecond inches, the rectangular pulse energy is concentrated in 0-10GH _Z, according to the = C / f = 3 * 10 8/10 * 10 9

= 3 cm, the size of each guard unit 100 is less than or equal to d = /3 = 3 m / 3 = lcm.

[0031] In order to verify the protective performance of the electromagnetic pulse protection device 1 of the regular quadrilateral structure, four kinds of electromagnetics are used. The pulse is used to verify the protection performance of the electromagnetic trap device 1 of the regular quadrilateral structure.

[0032] wherein, FIG. 5-1 to FIG. 5-3 are schematic diagrams of simulations of the electromagnetic pulse protection device of the regular quadrilateral structure of the present invention for the triangular electromagnetic pulse, as can be seen from FIG. 5-1 to FIG. 5-3, the triangular electromagnetic pulse After the electromagnetic pulse protection device 1吋 of the regular quadrilateral structure, the square region of the electromagnetic pulse stealth cloak 1 does not have a triangular pulse passing through, wherein, in combination with FIG. 4-1, the parameter is a=0.5 m, b=lm, triangular electromagnetic pulse In the graph, the horizontal axis represents the turn, the unit is ns, the range is 0-35ns, and the vertical axis represents the current in mA.

[0033] FIG. 6-1 to FIG. 6-3 are schematic diagrams of simulation of a rectangular electromagnetic pulse of an electromagnetic pulse protection device of a regular quadrilateral structure of the present invention. As can be seen from FIG. 6-1 to FIG. 6-3, a rectangular electromagnetic pulse passes through The electromagnetic pulse protection device of the regular quadrilateral structure 1吋, the square region of the electromagnetic pulse stealth cloak 1 does not have a rectangular pulse passing through, wherein, in combination with FIG. 4-2, the parameter is a=0.5 m, b=lm, , rectangular electromagnetic pulse In the graph, the horizontal axis represents the turn, the unit is _ns , the range is 0-35ns, and the vertical axis represents the current, and the unit is mA.

7-1 to 7-3 are schematic diagrams of simulation of a sinusoidal electromagnetic pulse of an electromagnetic pulse guard of a regular quadrilateral structure of the present invention. As can be seen from FIG. 7-1 to FIG. 7-3, a sinusoidal electromagnetic pulse passes through The electromagnetic pulse protection device of the regular quadrilateral structure 1吋, the square region of the electromagnetic pulse stealth cloak 1 does not have a sinusoidal pulse passing through, wherein, in combination with Fig. 4-3, the parameter is a=0.5m, b=lm, the pattern of the sinusoidal electromagnetic pulse The horizontal axis represents the interturn, the unit is ns, the range is 0-35ns, and the vertical axis represents current, and the unit is mA.

8-1 to 8-3 are schematic diagrams showing the simulation of the Gaussian electromagnetic pulse of the electromagnetic pulse guard of the regular quadrilateral structure of the present invention. As can be seen from FIG. 8-1 to FIG. 8-3, the Gaussian electromagnetic pulse passes through the The electromagnetic pulse protection device of the regular quadrilateral structure 1吋, the square area of the electromagnetic pulse stealth cloak 1 does not have a Gaussian pulse passing through, wherein, in combination with Fig. 4-4, the parameter is a=0.5m, b=lm, the pattern of the Gaussian electromagnetic pulse The horizontal axis represents the interturn, the unit is ns, the range is 0-35ns, and the vertical axis represents current, and the unit is mA.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the contents of the drawings, or indirectly or indirectly The technical field is equally included in the scope of patent protection of the present invention.

Industrial applicability

[0037] The present invention adopts the above technical solution, and brings the technical effects as follows: The electromagnetic pulse protection device of the regular quadrilateral structure of the invention can completely reflect, absorb or attenuate the electromagnetic pulse, and the protected object is not subjected to the electromagnetic pulse. The effect is to effectively avoid the electromagnetic pulse damage suffered by the electronic information system and prolong the electricity.

Claims

[Claim 1] An electromagnetic pulse guard device of a regular quadrilateral structure, wherein the electromagnetic pulse guard of the regular quadrilateral structure is composed of a plurality of regular quadrilateral annular protective layers, each of which has an annular protective layer A plurality of protection units are arranged continuously; each of the protection units has a dielectric constant of ε and a magnetic permeability of μ, wherein, L, Ί,

1. a.

Where a is the longest distance from the center point to the inner ring, b is the longest distance from the center point to the outer ring, n is the nth side and n is less than or equal to N, N is an integer 4, x and y are each protection The center coordinates of the unit.

[Claim 2] The electromagnetic pulse guard of the regular quadrilateral structure according to claim 1, wherein The length, width and height of the protection unit are less than or equal to d, wherein d is calculated as follows: ά=λ/3, X=C/f, C is the constant speed of light, and f is the energy concentration of the electromagnetic pulse The maximum frequency corresponding to the frequency range.

[Claim 3] The electromagnetic pulse guard of the regular quadrilateral structure according to claim 2, characterized in that

The electromagnetic pulse frequency is a triangular electromagnetic pulse, a rectangular electromagnetic pulse, a sinusoidal electromagnetic pulse or a Gaussian electromagnetic pulse.