CN110931982B - Device and method for simultaneously controlling electromagnetic waves and acoustic waves - Google Patents
Device and method for simultaneously controlling electromagnetic waves and acoustic waves Download PDFInfo
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- CN110931982B CN110931982B CN201911113056.7A CN201911113056A CN110931982B CN 110931982 B CN110931982 B CN 110931982B CN 201911113056 A CN201911113056 A CN 201911113056A CN 110931982 B CN110931982 B CN 110931982B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
- H01Q15/0026—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective said selective devices having a stacked geometry or having multiple layers
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Abstract
The invention belongs to the technical field of regulation and control of multiple physical fields, and discloses a device and a method for simultaneously controlling electromagnetic waves and sound waves, wherein the device comprises a metal plate array, the metal plate array comprises a plurality of metal plates which are identical in structure and arranged in parallel, an air layer with the same thickness is arranged between the metal plates, the sum of the thickness of the metal plates and the thickness of the air layer is less than 0.1 time of the wavelength of incident electromagnetic waves and the wavelength of the sound waves, the length of each metal plate is integral multiple of the length of the incident electromagnetic waves and the length of the sound waves, two side edges of each metal plate (1) in the length direction are parallel, one of the two parallel side edges of each metal plate is arranged in the same plane to form an incident surface S1, the other side edge of each metal plate forms an incident surface S2, and the incident surface S1 and the. The invention can realize the simultaneous control of electromagnetic waves and sound waves and can be widely applied to the field of multi-physical field control.
Description
Technical Field
The invention belongs to the technical field of multi-physical field regulation and control, and particularly relates to a device and a method for simultaneously controlling electromagnetic waves and sound waves.
Background
In recent years, a method for realizing simultaneous regulation and control of two or more physical fields by using the same device by means of metamaterials provides a new idea for a multi-physical-field simultaneous regulation and control technology. The multi-physical field regulation and control technology is a research trend in multiple fields of currently applied physics, material and energy science, biomedicine and the like. At present, the international research on the method for regulating and controlling multiple physical fields is in the initial theoretical design and simple experimental trial stage. Methods for simultaneously achieving focusing and stealth for temperature and electrostatic fields have been established. However, the technology for simultaneously regulating and controlling the sound waves and the electromagnetic waves has important application prospects in the fields of future military reconnaissance and counterreconnaissance, multi-physics field communication technology and the like. At present, the proposed novel multi-physical field device capable of simultaneously regulating and controlling sound waves and electromagnetic waves mainly comprises: carpet type invisible and wave-absorbing structure. There is still no good way to achieve simultaneous translation of the acoustic and electromagnetic waves over a fixed distance in space. The structure capable of simultaneously generating a translation in space by the sound waves and the electromagnetic waves can be directly used for simultaneously changing the attack directions of a sound wave weapon and a directional electromagnetic radiation weapon. The structure designed by the invention can also be combined and used for obtaining other devices with multiple physical field regulation and control functions, such as the effects of simultaneously splitting and synthesizing sound waves and electromagnetic waves.
Disclosure of Invention
The invention overcomes the defects of the prior art, and solves the technical problems that: an apparatus and a method for simultaneous manipulation of electromagnetic waves and acoustic waves are provided to achieve simultaneous translation or beam splitting, etc., manipulation of electromagnetic waves and acoustic waves.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a device for being directed at electromagnetic wave and sound wave are controlled simultaneously, includes the metal sheet array, the metal sheet array includes that polylith structure is the same and parallel arrangement' S metal sheet, be provided with the air bed that thickness is the same between the metal sheet, the thickness sum of metal sheet thickness and air bed is less than 0.1 times of the wavelength of incident electromagnetic wave and sound wave, the length d of metal sheet is the integral multiple of incident electromagnetic wave and sound wave, the metal sheet is located two sides on the length direction and is parallel, and one of them sets up in the coplanar and form incident plane S1 in two parallel sides of all metal sheets, and another forms emergent plane S2, incident plane S1 is the contained angle that is less than 90 degrees with the metal sheet plane.
The metal plate is a brass plate.
In addition, the invention also provides a method for simultaneously manipulating electromagnetic waves and acoustic waves, which is used for simultaneously translating the electromagnetic waves and the acoustic waves, and comprises the following steps:
s101, determining the distance of translational manipulation, determining the length d of a metal plate array and the angle between an incident surface and the plane of the metal plate according to the distance of translational manipulation and the wavelengths of incident electromagnetic waves and acoustic waves, and manufacturing an array of the metal plates; the metal plate array comprises a plurality of metal plates which are arranged in parallel, air layers with the same thickness are arranged between the metal plates, the sum of the thickness of the metal plates and the thickness of the air layers is less than 0.1 time of the wavelength of incident electromagnetic waves and sound waves, the length d of each metal plate is an integral multiple of the incident electromagnetic waves and the sound waves, two side edges of the metal plates in the length direction are parallel, one of the two parallel side edges of each metal plate is arranged in the same plane to form an incident surface S1, the other side edge of each metal plate forms an emergent surface S2, and the incident surface S1 and the plane of each metal plate form an included angle of less than 90 degrees;
s102, electromagnetic waves and acoustic waves are incident on the metal plate array produced in step S101 from the incident surface.
In addition, the present invention also provides a method for simultaneously manipulating electromagnetic waves and acoustic waves, for simultaneously splitting beams of the electromagnetic waves and the acoustic waves, comprising the steps of:
s201, 2 metal plate arrays are taken, each metal plate array comprises a plurality of metal plates arranged in parallel, air layers with the same thickness are arranged between the metal plates, the sum of the thickness of each metal plate and the thickness of each air layer is less than 0.1 time of the wavelength of an incident electromagnetic wave and a sound wave, the length d of each metal plate is an integral multiple of the wavelength of the incident electromagnetic wave and the sound wave, two side edges of the metal plates in the length direction are parallel, one of the two parallel side edges of each metal plate is arranged in the same plane to form an incident surface S1, the other parallel side edge of each metal plate forms an emergent surface S2, and the incident surface S1 and the plane of each metal plate form an included angle of less than 90;
s202, symmetrically butting the two metal plate arrays up and down to form a splayed beam splitting device;
and S203, making the electromagnetic wave and the sound wave incident on the beam splitting device from the incident surface.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention has simple structure, is very easy to realize, can be realized by only utilizing the metal plate array, and does not need complex artificial structure and composite material.
(2) The invention can simultaneously regulate and control the propagation tracks of the microwave and the sound wave, realizes the translation of the incident electromagnetic wave and the sound wave for a certain distance in space, and the translation distance value can be controlled by changing the angle and the length of the device.
(3) The control device can realize other regulation and control functions of electromagnetic waves and sound waves simultaneously through other combination modes. For example, two identical translators are butted up and down to form a splayed structure, so that the beam splitting function of electromagnetic waves and sound waves can be realized simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for simultaneously controlling electromagnetic waves and sound waves according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of an apparatus for simultaneously controlling electromagnetic waves and sound waves according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating the effect of full-wave numerical simulation of electromagnetic waves and sound waves using the apparatus according to the embodiment of the present invention at an incident angle of 0 degrees;
fig. 4 is a diagram showing the effect of full-wave numerical simulation of electromagnetic waves and acoustic waves using the apparatus according to the embodiment of the present invention at an incident angle of 30 degrees, and the structure of the apparatus in fig. 4 is the same as that in fig. 3.
Fig. 5 is a schematic structural diagram of a beam splitting apparatus for splitting electromagnetic waves and acoustic waves according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, the present invention provides a device for simultaneously controlling electromagnetic waves and acoustic waves, including a metal plate array, where the metal plate array includes a plurality of metal plates 1 with the same structure and arranged in parallel, an air layer 2 with the same thickness is arranged between the metal plates 1, the sum of the thickness of the metal plates 1 and the thickness of the air layer 2 is less than 0.1 times of the wavelength of an incident electromagnetic wave and the acoustic wave, the length d of the metal plates 1 is an integral multiple of the incident electromagnetic wave and the acoustic wave, two sides of the metal plates 1 in the length direction are parallel, one of the two parallel sides of all the metal plates is arranged in the same plane to form an incident surface S1, the other forms an exit surface S2, and an included angle of less than 90 degrees is formed between the incident surface S1 and the plane of the metal plate 1.
Specifically, in this embodiment, the metal plate 1 is a brass plate. It appears to be a perfect electrical conductor for electromagnetic waves in the microwave band, whereas both young's modulus (104 GPa) and mass density (8500 kg/m 3) are very large for acoustic waves. In the embodiment of the invention, the thickness of the metal plate and the interval of the air layer between two adjacent metal plates are both in the sub-wavelength order, that is, the sum of the thickness of the metal plate 1 and the thickness of the air layer 2 is less than 0.1 times of the wavelength of the incident electromagnetic wave and the acoustic wave.
In the embodiment of the present invention, when the electromagnetic wave or the acoustic wave in the microwave band is incident on the incident surface S1 of the structure, the electromagnetic wave or the acoustic wave is emitted from the emitting surface S2 at the same angle as the incident angle. In effect, the outgoing wave is spatially shifted by a fixed distance compared to the incoming wavedsinɑ。ɑIs the angle of the metal plate to the x-axis.
The results shown in fig. 3 were obtained by full-wave numerical simulation of electromagnetic waves and acoustic waves, wherein the dimensions of the metal plate array used were:d=4λ0，ɑ=45 degrees. Lambda [ alpha ]0Lambda is taken in the simulation for the wavelength of the incident electromagnetic or acoustic wave0=3 cm. In fig. 3 a, the incident electromagnetic wave is a gaussian beam, and the incident angle is 0 degrees (incident perpendicular to the incident surface S1). The electromagnetic wave emitted at this time is also emitted perpendicularly to the emission surface S2, and is shifted only in position in the y directiondsinɑDistance of 8.48 cm. B of FIG. 3 is a graph showing the result of using the same size metal plate array to make a Gaussian sound wave incident perpendicularly to the incident surface S1, the emergent sound wave is still Gaussian and emerges perpendicularly to the emergent surface S2, but shifted in the y directiondsinɑThe distance of (c).
The numerical simulation results were obtained by changing the incident angle to 30 degrees while maintaining the same structural dimensions and incident electromagnetic and acoustic wave parameters as above, and as shown in fig. 4, when the electromagnetic and acoustic waves were incident on the incident surface S1 at an angle of 30 degrees, respectively, the electromagnetic and acoustic waves still exited from the surface S2 at the same angle, but were spatially shifted in the y directiondsinɑDistance of 8.48 cm.
That is, when an electromagnetic wave or a sound wave is incident on the incident surface S1 of the present invention at any angle, the electromagnetic wave or the sound wave is emitted from the emitting surface S2. The outgoing electromagnetic wave or the acoustic wave generates a fixed translation dsin a in the + y direction with respect to the incoming wave, while keeping the outgoing angle and the incoming angle consistent. I.e. the invention only changes the position of the incident field in the y-direction and not its direction. Therefore, by designing the structural size of the metal plate array, the simultaneous translation control of the incident electromagnetic wave and the sound wave can be realized.
In addition, the embodiment of the present invention further provides a method for simultaneously manipulating electromagnetic waves and acoustic waves, which is used for simultaneously translating the electromagnetic waves and the acoustic waves, and includes the following steps:
s101, determining the distance of translational manipulation, determining the length d of a metal plate array and the angle between an incident surface and the plane of the metal plate according to the distance of translational manipulation and the wavelengths of incident electromagnetic waves and acoustic waves, and manufacturing an array of the metal plates; the metal sheet array includes that polylith structure is the same and parallel arrangement' S metal sheet 1, be provided with the air bed 2 that thickness is the same between the metal sheet 1, the thickness sum of metal sheet 1 and air bed 2 is less than 0.1 times of the wavelength of incident electromagnetic wave and sound wave, the length d of metal sheet 1 is the integral multiple of incident electromagnetic wave and sound wave, two sides that metal sheet 1 is located length direction are parallel, and one of them sets up in the coplanar formation incident surface S1 in two parallel sides of all metal sheets, and another forms emitting surface S2, incident surface S1 is the contained angle that is less than 90 degrees with metal sheet 1 plane.
S102, electromagnetic waves and acoustic waves are incident on the metal plate array produced in step S101 from the incident surface.
In addition, as shown in fig. 5, an embodiment of the present invention further provides a device for simultaneously controlling electromagnetic waves and acoustic waves, which can also be used in combination with the device for simultaneously controlling electromagnetic waves and acoustic wavesxShaft isɑThe other metal plate array with the included angle is combined for use, namely, the two metal plate arrays with the same structure are in up-down symmetrical butt joint, and the incident surfaces of the two metal plate arrays are arranged in the same plane, so that the beam splitting effect can be generated on incident electromagnetic waves and sound waves. Therefore, an embodiment of the present invention further provides a method for simultaneously manipulating electromagnetic waves and acoustic waves, for simultaneously splitting beams of the electromagnetic waves and the acoustic waves, including the following steps:
s201, get the same metal sheet array of 2 structures, the metal sheet array includes that polylith structure is the same and parallel arrangement 'S metal sheet 1, be provided with the air bed 2 that thickness is the same between the metal sheet 1, the thickness sum of metal sheet 1' S thickness and air bed 2 is less than 0.1 times of the wavelength of incident electromagnetic wave and sound wave, the length d of metal sheet 1 is the integral multiple of incident electromagnetic wave and sound wave, metal sheet 1 is located two sides on the length direction and is parallel, and one of them setting in two parallel sides of all metal sheets forms incident surface S1 in the coplanar, and another forms emergent surface S2, incident surface S1 is the contained angle that is less than 90 degrees with metal sheet 1 plane.
S202, symmetrically butting the two metal plate arrays up and down to form a splayed beam splitting device as shown in figure 5;
and S203, the electromagnetic wave and the sound wave are incident on the beam splitting device from the incident surface, so that the beam splitting function of the electromagnetic wave and the sound wave can be realized simultaneously.
The invention provides a device and a method for simultaneously controlling electromagnetic waves and sound waves, wherein the structure of the device is positioned in the air during operation, and when the electromagnetic waves or the sound waves are incident on the incident surface S1 of the structure at any angle, the electromagnetic waves or the sound waves are emitted from the emitting surface S2. The outgoing electromagnetic wave or the acoustic wave generates a fixed translation dsin a in the + y direction with respect to the incoming wave, while keeping the outgoing angle and the incoming angle consistent. Therefore, the invention can simultaneously regulate and control the propagation tracks of the microwave and the sound wave, realizes the translation of the incident electromagnetic wave and the sound wave for a certain distance in space, and the translation distance value can be controlled by changing the angle and the length of the device. In addition, the control device can realize other regulation and control functions of electromagnetic waves and sound waves simultaneously after other combination modes. For example, two identical translators are butted up and down to form a splayed structure, so that the beam splitting function of electromagnetic waves and sound waves can be realized simultaneously.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. A device for simultaneously controlling electromagnetic waves and acoustic waves is characterized by comprising a metal plate array, the metal plate array comprises a plurality of metal plates (1) which have the same structure and are arranged in parallel, air layers (2) with the same thickness are arranged between the metal plates (1), the sum of the thickness of the metal plates (1) and the thickness of the air layers (2) is less than 0.1 time of the wavelength of incident electromagnetic waves and sound waves, the metal plate (1) comprises two opposite parallel side edges, the distance between the two opposite parallel side edges is the length of the metal plate (1), the length d of the metal plate (1) is an integral multiple of incident electromagnetic waves and sound waves, and one of the two parallel side edges of all the metal plates is arranged in the same plane to form an incident surface S1, the other one of the two parallel side edges of all the metal plates forms an emergent surface S2, and the incident surface S1 forms an included angle smaller than 90 degrees with the plane of the metal plate (1).
2. Device for the simultaneous manipulation of electromagnetic and acoustic waves according to claim 1, characterized in that said metal plate (1) is a brass plate.
3. A method for simultaneous manipulation of electromagnetic and acoustic waves, for simultaneous translation of electromagnetic and acoustic waves, comprising the steps of:
s101, determining the distance of translational manipulation, determining the length d of a metal plate array and the angle between an incident surface and the plane of the metal plate according to the distance of translational manipulation and the wavelengths of incident electromagnetic waves and acoustic waves, and manufacturing an array of the metal plates; the metal plate array comprises a plurality of metal plates (1) which are arranged in parallel, an air layer (2) with the same thickness is arranged between the metal plates (1), the sum of the thickness of the metal plates (1) and the thickness of the air layer (2) is less than 0.1 time of the wavelength of an incident electromagnetic wave and a sound wave, each metal plate (1) comprises two opposite parallel sides, the distance between the two opposite parallel sides is the length of the metal plate (1), the length d of the metal plate (1) is an integral multiple of the incident electromagnetic wave and the sound wave, one of the two parallel sides of all the metal plates is arranged in the same plane to form an incident surface S1, the other parallel side of each metal plate forms an emergent surface S2, and the incident surface S1 and the plane of the metal plate (1) form an included angle of less than 90 degrees;
s102, electromagnetic waves and acoustic waves are incident on the metal plate array produced in step S101 from the incident surface.
4. A method for simultaneous manipulation of electromagnetic and acoustic waves, for simultaneous beam splitting of electromagnetic and acoustic waves, comprising the steps of:
s201, 2 metal plate arrays are taken, each metal plate array comprises a plurality of metal plates arranged in parallel, an air layer (2) with the same thickness is arranged between the metal plates (1), the sum of the thickness of each metal plate (1) and the thickness of the air layer (2) is smaller than 0.1 time of the wavelength of an incident electromagnetic wave and a sound wave, each metal plate (1) comprises two opposite parallel sides, the distance between the two opposite parallel sides is the length of the metal plate (1), the length d of each metal plate (1) is the integral multiple of the incident electromagnetic wave and the sound wave, one of the two parallel sides of each metal plate is arranged in the same plane to form an incident surface S1, the other parallel side of each metal plate forms an emergent surface S2, and the incident surface S1 and the plane of each metal plate (1) form an included angle smaller than 90 degrees;
s202, symmetrically butting the two metal plate arrays up and down to form a splayed beam splitting device;
and S203, making the electromagnetic wave and the sound wave incident on the beam splitting device from the incident surface.
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| US20080304522A1 (en) * | 2006-04-04 | 2008-12-11 | Mills Randell L | Catalyst laser |
| US10074893B2 (en) * | 2014-02-10 | 2018-09-11 | Srihitha Shopping Services Pvt. Ltd | Device used to reduce electromagnetic radiations |
| CN108173603B (en) * | 2017-12-26 | 2021-08-20 | 上海展扬通信技术有限公司 | Signal processing method and control terminal |
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| CN1182220A (en) * | 1997-11-05 | 1998-05-20 | 朱润枢 | Phased array optical equipment and method |
| CN1737616A (en) * | 2005-07-29 | 2006-02-22 | 浙江大学 | Polarization beam divider based on light quantum crystal positive/negative refraction and beam dividing method thereof |
| CN100346182C (en) * | 2005-07-29 | 2007-10-31 | 浙江大学 | Polarization beam divider based on light quantum crystal positive/negative refraction and beam dividing method thereof |
| CN107732379A (en) * | 2017-10-18 | 2018-02-23 | 西安天和防务技术股份有限公司 | Spatial filter |
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