CN114284722B - Horizontal polarization electromagnetic pulse simulation device - Google Patents
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Abstract
The invention relates to a horizontal polarization electromagnetic pulse simulation device, which comprises a pulse source and an antenna connected with the pulse source, wherein the antenna comprises one or more connecting wire units, and each connecting wire unit comprises a first end part and a second end part; the first end is used for being connected with the pulse source, and the second end is used for being connected with the ground; the second end part is in a circular arc shape or a plurality of second end parts are in a circular arc shape. Compared with the existing antenna, the antenna of the horizontal polarization electromagnetic pulse simulation device can improve electric field distribution during use and provide more uniform and regular test space for tested products.
Description
Technical Field
The invention relates to a horizontal polarization electromagnetic pulse simulator, in particular to a horizontal polarization strong electromagnetic pulse simulator with uniform electric field distribution.
Background
Strong electromagnetic pulses are one of the large-scale killing factors for nuclear explosions. Electromagnetic pulses generated by nuclear explosions can have a significant damaging effect on electrical systems, communication systems, control systems, signal transmission systems, data acquisition systems, and the like that contain electronic equipment. Under the strong electromagnetic pulse environment, the viability of some important facilities and equipment is not clear, and the test and examination verification needs to be carried out under the strong electromagnetic pulse simulation environment.
The strong electromagnetic pulse simulation environment is mainly generated by an electromagnetic pulse simulation device. The electromagnetic pulse simulation device mainly comprises a pulse source and an antenna, wherein the pulse source is used for generating voltage pulses. The antenna transmits voltage pulse and generates a pulse electric field in a certain area to provide a strong electromagnetic pulse environment. When the antenna is designed, the more uniform the electric field in the test space is, the more regular the shape of equipotential lines in the space is, and the more convenient the arrangement of tested products is.
Fig. 1a is a schematic structural diagram of an antenna of a conventional horizontal polarization simulator, in which two antennas are connected to a pulse source, the pulse source is located at the intersection of an X-ray and a Z-ray, and the antennas have a triangular structure. Fig. 1b is a diagram showing the distribution of the internal electric field of the conventional antenna. It can be seen from the figure that the region of equal amplitude is an irregular region with narrow middle and wide upper and lower sides, and this field distribution is detrimental to the arrangement of the tested items.
Disclosure of Invention
In view of the above, an embodiment of the present invention is to provide a simulation device for horizontal polarized electromagnetic pulse, which is used for solving the problem of irregular electric field distribution of an antenna in the existing simulation device.
In one aspect, an embodiment of the present invention provides a horizontal polarized electromagnetic pulse simulation apparatus, including a pulse source and an antenna connected to the pulse source, the antenna including one or more connection line units, each of the connection line units including:
a first end for connection to the pulse source; and
a second end for connection to ground;
the second end part is in a circular arc shape or a plurality of second end parts are in a circular arc shape.
According to an embodiment of the present invention, a central angle θ of an arc formed by arranging the plurality of second ends is: θ is more than 0 and less than or equal to 180 degrees.
According to an embodiment of the present invention, the central angle θ of the circular arc is: θ is more than or equal to 100 degrees and less than or equal to 150 degrees.
According to an embodiment of the invention, a chord of the circular arc is located between the second end and the first end.
According to an embodiment of the invention, each of the connection line units comprises a first connection line, one end of which is connected to the pulse source and the other end is connected to the ground.
According to an embodiment of the present invention, at least part of the connection line units include a first connection line and a second connection line, one end of the first connection line is the second end, and the other end is connected to the pulse source through the second connection line.
According to an embodiment of the present invention, the first connection line is a metal line.
According to an embodiment of the present invention, the plurality of first end portions are arranged in an arc shape or a circular shape.
According to an embodiment of the present invention, the horizontal polarization electromagnetic pulse simulation device includes two antennas; the pulse source comprises two conical structures, the two conical structures are connected through the top of the cone, and the two antennas are respectively connected with the bottom surfaces of the two conical structures.
According to an embodiment of the invention, the axes of the two conical structures are located on the same straight line.
Compared with the existing simulation device, the horizontal polarization electromagnetic pulse simulation device provided by the embodiment of the invention can improve the electric field distribution during use and provide a more uniform and regular test space for tested products.
In the invention, the technical schemes can be mutually combined to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention. Wherein:
FIG. 1a is a schematic diagram of a conventional horizontal polarization simulator antenna;
FIG. 1b is a diagram showing the distribution of the internal electric field of a conventional antenna;
FIG. 2 is a top view of a horizontally polarized electromagnetic pulse simulator according to one embodiment of the present invention;
FIG. 3 is a schematic diagram of a horizontal polarized electromagnetic pulse simulator according to an embodiment of the present invention;
FIG. 4 is a side view of a horizontally polarized electromagnetic pulse simulator of an embodiment of the present invention;
FIG. 5 is a top view of a horizontally polarized electromagnetic pulse simulator according to one embodiment of the present invention;
fig. 6 is an internal electric field distribution diagram of the antenna of embodiment 1 of the present invention.
The reference numerals are explained as follows:
10. an antenna; 11. a first end; 12. a second end; 20. a first connecting line; a 30 pulse source; 40. ground surface.
Detailed Description
The following detailed description of preferred embodiments of the invention, which form a part hereof, and together with the description of the invention serve to explain the principles of the invention, are not intended to limit the scope of the invention. Wherein the terms "first" and "second" are used only to distinguish structures having the same name, and are not limited thereto.
Referring to fig. 2 to 5, an embodiment of the present invention provides an electromagnetic pulse simulation apparatus for horizontal polarization, comprising a pulse source 30 and an antenna 10 connected to the pulse source 30, the antenna 10 comprising at least one connection line unit, each connection line unit comprising a first end 11 and a second end 12, the first end 11 being for connection to the pulse source 30 and the second end 12 being for connection to the ground 40; the second end 12 is arc-shaped, or the plurality of second ends 12 are arranged in a circular arc shape, that is, the plurality of second ends 12 are located on the same circular arc.
In one embodiment, a pulse source 30 may be coupled to two antennas 10, where the two antennas 10 are at different voltages, thereby creating an electric field between the two antennas 10. In the horizontal polarization electromagnetic pulse simulator according to the embodiment of the present invention, the plurality of second end portions 12 are arranged in the circular arc shape, so that the electric field distribution during use can be improved and the electric field distribution can be more uniform.
In one embodiment, as shown in fig. 2, the antenna 10 includes a connection unit, the connection unit is a sector plate, and the circular arc sector end is the second end 12.
In one embodiment, the antenna 10 includes a plurality of connection units, each of which includes a first connection line 20; one end of the first connecting wire 20 is connected with the pulse source 30, the other end is a second end 12, the second ends 12 of the first connecting wires 20 are connected with the ground 40, and the second ends 12 of the first connecting wires 20 are arranged on the ground 40 at intervals and are arranged in a circular arc shape.
In one embodiment, at least a portion of the connection line unit is connected to the ground 40 by a load.
In one embodiment, the central angle θ of the circular arc formed by the plurality of second end portions 12 is: 60 ° < θ+.ltoreq.180°, for example 60 °, 65 °, 70 °, 75 °, 80 °, 85 °, 90 °, 95 °, 100 °, 105 °, 110 °, 115 °, 120 °, 125 °, 130 °, 135 °, 140 °, 145 °, 150 °, 155 °, 160 °, 165 °, 170 °, 175 °.
In one embodiment, the central angle θ of the circular arc formed by the plurality of second end portions 12 is: the central angle theta is more than or equal to 100 degrees and less than or equal to 150 degrees, so that the impedance of the antenna, the test space and the like can be in a reasonable range, and the improvement of the output efficiency of the pulse source and the provision of a larger test space are facilitated.
In one embodiment, the radius of the circular arc formed by the arrangement of the plurality of second ends 12 is 5 meters to 100 meters, for example, 10 meters, 20 meters, 30 meters, 50 meters, 80 meters, 90 meters.
In an embodiment, chords of the circular arcs formed by the arrangement of the plurality of second end portions 12 (i.e. connecting lines between two ends of the circular arcs) are located between the plurality of second end portions 12 and the plurality of first end portions 11, that is, the circular arcs formed by the arrangement of the plurality of second end portions 12 are convex arcs, and when the plurality of second end portions 12 are arranged in this structure, the electric field distribution of the antenna is more rectangular, and further more square.
In one embodiment, the circular arcs formed by the arrangement of the plurality of second ends 12 are located between the chords and the plurality of first ends 11, that is, the circular arcs formed by the arrangement of the plurality of second ends 12 are concave arcs compared with the first ends 11, and the electric field distribution of the antenna when the plurality of second ends 12 are arranged in this structure is more similar to a dumbbell shape with a thinner middle and thicker two ends.
In one embodiment, the number of the connection line units may be 10 to 200, for example, 20, 30, 50, 80, 100, 120, 150, 180.
In an embodiment, the angle between the first connecting line 20 and the ground 40 may be 20 ° to 80 °, such as 30 °, 40 °, 50 °, 60 °, 70 °.
In one embodiment, part or all of the connection line units are composed of one first connection line 20, that is, one end of the first connection line 20 is the first end 11 and the other end is the second end 12 along the length direction of the first connection line 20.
In one embodiment, part or all of the connection line units include a first connection line 20 and a second connection line; one end of the first connecting wire 20 is the second end 12 of the connecting wire unit, which is connected to the ground 40, and the other end is connected to the pulse source 30 via a second connecting wire.
In one embodiment, part or all of the connection line units include a first connection line 20 and a second connection line; the first connecting wire 20 has one end connected to the second end 12 of the connecting wire unit, and the other end connected to the ground 40, and the ground load is connected to the pulse source 30 through a second connecting wire.
In one embodiment, part or all of the connection line units include a first connection line 20, a second connection line, and a third connection line; one end of the first connecting wire 20 is the second end 12 of the connecting wire unit, which is connected to the ground 40, and the other end is connected to the ground load, which is connected to the second connecting wire through the third connecting wire, which is connected to the pulse source 30.
In one embodiment, part or all of the connection line units include one first connection line 20 and one second connection line.
In an embodiment, part or all of the connection line units include a first connection line 20 and a plurality of second connection lines electrically connected to the first connection line 20, respectively.
In one embodiment, part or all of the connection line units include one first connection line 20, one third connection line, and at least one second connection line.
In an embodiment, the first connecting line 20, the second connecting line, and the third connecting line may be metal wires, such as stainless steel wire ropes, aluminum stranded wires, and the like.
In one embodiment, the first ends 11 are arranged in an arc or circular shape, i.e., the first ends 11 are disposed on the pulse source 30 in an arc or circular shape.
In one embodiment, the plurality of first ends 11 are disposed on the pulse source 30 at equal intervals.
In one embodiment, the pulse source 30 comprises two conical structures connected by the top of the cone, and the two antennas 10 are respectively connected to the bottom surfaces of the two conical structures.
In one embodiment, the axes of the two conical structures of the pulse source 30 are on the same line.
In one embodiment, the two conical structures of the pulse source 30 are disposed horizontally, i.e., the axes of the two conical structures are parallel to the ground 40.
In one embodiment, the plurality of first ends 11 are uniformly disposed on the bottom surface of the conical structure of the pulse source 30.
Compared with the existing simulation device, the horizontal polarization electromagnetic pulse simulation device provided by the embodiment of the invention can improve the electric field distribution during use and provide a more uniform and regular test space for tested products.
The horizontal polarization electromagnetic pulse simulation device according to an embodiment of the present invention will be further described below with reference to the accompanying drawings and specific examples.
Example 1
A horizontal polarization electromagnetic pulse simulation device comprises a pulse source 30 and two antenna bodies 10 connected with the pulse source 30. The pulse source 30 is composed of two conical structures, the two cones are connected through two vertexes, and the axes of the two conical structures are positioned on the same straight line; the pulse source 30 is placed horizontally, i.e. the axes of the two cones are parallel to the ground 40.
The two antenna bodies 10 have the same structure and are composed of 25 first connection lines 20. One end of the first connecting line 20 is connected to the bottom surface of the cone of the pulse source 30, and the other end is connected to the ground 40; the first ends 11 of the 25 first connecting lines 20 are arranged on the circumference of the conical bottom surface at equal intervals; the second ends 12 of the 25 first connecting lines 20 are arranged in a circular arc shape on the ground 40, the circular arc being the aforementioned convex arc with a central angle of 120 °.
Wherein, the distance between the center of the cone bottom surface of the pulse source 30 and the ground 40 is 10 meters, and the radius of the cone bottom surface is 1.5 meters; the first connecting wire 20 is an aluminum stranded wire with a diameter of 4mm and a length of 15-20 m.
The internal electric field distribution of the antenna of the present embodiment was obtained through simulation and actual measurement verification, as shown in fig. 6 in particular. As can be seen from the figure, the internal equipotential lines of the antenna device of embodiment 1 are approximately rectangular, which effectively increases the utilization rate of the electric field and facilitates the placement of the object to be measured compared with the internal equipotential lines of the antenna device of the prior art.
Example 2
A horizontal polarization electromagnetic pulse simulation device comprises a pulse source 30 and two antenna bodies 10 connected with the pulse source 30. The pulse source 30 is composed of two conical structures, the two cones are connected through two vertexes, and the axes of the two conical structures are positioned on the same straight line; the pulse source 30 is placed horizontally, i.e. the axes of the two cones are parallel to the ground 40.
The two antenna bodies 10 have the same structure and are composed of 25 first connection lines 20. One end of the first connecting line 20 is connected to the bottom surface of the cone of the pulse source 30, and the other end is connected to the ground 40; the first ends 11 of the 25 first connecting lines 20 are arranged on the circumference of the conical bottom surface at equal intervals; the second ends 12 of the 25 first connecting lines 20 are arranged in a circular arc shape on the ground 40, the circular arc being the aforementioned convex arc with a central angle of 90 °.
Wherein, the distance between the center of the cone bottom surface of the pulse source 30 and the ground 40 is 10 meters, and the radius of the cone bottom surface is 1.5 meters; the first connecting wire 20 is an aluminum stranded wire with a diameter of 4mm and a length of 15-20 m.
The internal electric field distribution of the antenna of this example was obtained by simulation and actual measurement verification, and its shape was similar to that of example 1, and the internal equipotential lines were also approximately rectangular.
Example 3
A horizontal polarization electromagnetic pulse simulation device comprises a pulse source 30 and two antenna bodies 10 connected with the pulse source 30. The pulse source 30 is composed of two conical structures, the two cones are connected through two vertexes, and the axes of the two conical structures are positioned on the same straight line; the pulse source 30 is placed horizontally, i.e. the axes of the two cones are parallel to the ground 40.
The two antenna bodies 10 have the same structure and are composed of 25 first connection lines 20. One end of the first connecting line 20 is connected to the bottom surface of the cone of the pulse source 30, and the other end is connected to the ground 40; the first ends 11 of the 25 first connecting lines 20 are arranged on the circumference of the conical bottom surface at equal intervals; the second ends 12 of the 25 first connecting lines 20 are arranged in a circular arc shape on the ground 40, the circular arc being the aforementioned convex arc with a central angle of 150 °.
Wherein, the distance between the center of the cone bottom surface of the pulse source 30 and the ground 40 is 10 meters, and the radius of the cone bottom surface is 1.5 meters; the first connecting wire 20 is an aluminum stranded wire with a diameter of 4mm and a length of 15-20 m.
The internal electric field distribution of the antenna of this example was obtained by simulation and actual measurement verification, and its shape was similar to that of example 1, and the internal equipotential lines were also approximately rectangular.
Example 4
A horizontal polarization electromagnetic pulse simulation device comprises a pulse source 30 and two antenna bodies 10 connected with the pulse source 30. The pulse source 30 is composed of two conical structures, the two cones are connected through two vertexes, and the axes of the two conical structures are positioned on the same straight line; the pulse source 30 is placed horizontally, i.e. the axes of the two cones are parallel to the ground 40.
The two antenna bodies 10 have the same structure and are composed of 25 first connection lines 20. One end of the first connecting line 20 is connected to the bottom surface of the cone of the pulse source 30, and the other end is connected to the ground 40; the first ends 11 of the 25 first connecting lines 20 are arranged on the circumference of the conical bottom surface at equal intervals; the second ends 12 of the 25 first connecting lines 20 are arranged in a circular arc shape on the ground 40, the circular arc being the aforementioned convex arc with a central angle of 30 °.
Wherein, the distance between the center of the cone bottom surface of the pulse source 30 and the ground 40 is 10 meters, and the radius of the cone bottom surface is 1.5 meters; the first connecting wire 20 is an aluminum stranded wire with a diameter of 4mm and a length of 15-20 m.
The internal electric field distribution of the antenna of this example was obtained by simulation and actual measurement verification, and its shape was similar to that of example 1, and the internal equipotential lines were also approximately rectangular.
Example 5
A horizontal polarization electromagnetic pulse simulation device comprises a pulse source 30 and two antenna bodies 10 connected with the pulse source 30. The pulse source 30 is composed of two conical structures, the two cones are connected through two vertexes, and the axes of the two conical structures are positioned on the same straight line; the pulse source 30 is placed horizontally, i.e. the axes of the two cones are parallel to the ground 40.
The two antenna bodies 10 have the same structure and are composed of 25 first connection lines 20. One end (first end 11) of the first connecting line 20 is connected to the bottom surface of the cone of the pulse source 30, and the other end (second end 12) is connected to the ground 40; the first ends 11 of the 25 first connecting lines 20 are arranged on the circumference of the conical bottom surface at equal intervals; the second ends 12 of the 25 first connecting lines 20 are arranged in a circular arc shape on the ground 40, the circular arc being the concave arc described above, and the central angle thereof being 150 °.
Wherein, the distance between the center of the cone bottom surface of the pulse source 30 and the ground 40 is 10 meters, and the radius of the cone bottom surface is 1.5 meters; the first connecting wire 20 is an aluminum stranded wire with a diameter of 4mm and a length of 15-20 m.
The internal electric field distribution of the antenna of the embodiment is obtained through simulation and practical measurement verification, and the shape of the internal electric field distribution is dumbbell-shaped with thin middle and thick two ends.
Comparative example
The horizontal polarized electromagnetic pulse simulation device of this example is basically the same as that of the example, except that: the second ends 12 of the 25 first connecting lines 20 are arranged in a straight line on the ground 40.
The internal electric field distribution of the antenna of this embodiment was obtained by simulation and actual measurement verification, as shown in fig. 1 b.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. A horizontally polarized electromagnetic pulse simulation apparatus comprising a pulse source and an antenna connected to the pulse source, the antenna comprising one or more connection line units, each connection line unit comprising:
a first end for connection to the pulse source; and
a second end for connection to ground;
wherein the second end part is in a circular arc shape or a plurality of second end parts are in a circular arc shape,
wherein, the central angle θ of the circular arc formed by the arrangement of the plurality of second end portions is: θ is more than 0 and less than or equal to 180 degrees,
wherein a chord of the circular arc is located between the second end and the first end.
2. The horizontally polarized electromagnetic pulse simulator of claim 1, wherein the central angle θ of the circular arc is: θ is more than or equal to 100 degrees and less than or equal to 150 degrees.
3. The horizontally polarized electromagnetic pulse simulator of claim 1, wherein each of the connection line units comprises a first connection line having one end connected to the pulse source and the other end connected to the ground.
4. The horizontally polarized electromagnetic pulse simulator of claim 1, wherein at least a portion of the connection line units comprise a first connection line and a second connection line, one end of the first connection line being the second end, the other end being connected to the pulse source through the second connection line.
5. A horizontally polarized electromagnetic pulse simulator according to claim 3, wherein the first connecting line is a metal line.
6. The horizontally polarized electromagnetic pulse simulator of claim 4 wherein the first connecting line is a metal line.
7. The horizontally polarized electromagnetic pulse simulator of any one of claims 1 to 6 wherein a plurality of the first ends are arranged in an arc or circle.
8. The horizontally polarized electromagnetic pulse simulating apparatus of claim 1, comprising two of said antennas; the pulse source comprises two conical structures, the two conical structures are connected through the top of the cone, and the two antennas are respectively connected with the bottom surfaces of the two conical structures.
9. The horizontally polarized electromagnetic pulse simulator of claim 8, wherein the axes of the two conical structures are on the same line.
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| US5982334A (en) * | 1997-10-31 | 1999-11-09 | Waveband Corporation | Antenna with plasma-grating |
| US7266307B2 (en) * | 2002-02-01 | 2007-09-04 | Isaac Shpantzer | Method and apparatus for pulse generation and adaptive pulse generation for optical communications |
| CN105261821B (en) * | 2015-09-29 | 2016-08-24 | 中国舰船研究设计中心 | The most vertical a kind of cone monopole daughter nucleus electromagnetic pulse simulator antenna |
| US10992343B1 (en) * | 2019-12-04 | 2021-04-27 | At&T Intellectual Property I, L.P. | Guided electromagnetic wave communications via an underground cable |
| CN111416196B (en) * | 2020-04-29 | 2025-01-24 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | A frequency-variable adaptive distributed antenna load |
| CN212159971U (en) * | 2020-04-29 | 2020-12-15 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | A Multifunctional Electromagnetic Pulse Simulation Experiment System with Shared Antenna |
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