CN113937487A - Bounded wave antenna initial section for generating fast front edge radiation field - Google Patents
Bounded wave antenna initial section for generating fast front edge radiation field Download PDFInfo
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- CN113937487A CN113937487A CN202111006111.XA CN202111006111A CN113937487A CN 113937487 A CN113937487 A CN 113937487A CN 202111006111 A CN202111006111 A CN 202111006111A CN 113937487 A CN113937487 A CN 113937487A
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- 230000005855 radiation Effects 0.000 title claims abstract description 39
- 230000007704 transition Effects 0.000 claims abstract description 55
- 239000003990 capacitor Substances 0.000 claims abstract description 47
- 238000009413 insulation Methods 0.000 claims abstract description 14
- 239000004020 conductor Substances 0.000 claims abstract description 13
- 239000010409 thin film Substances 0.000 claims description 10
- 230000015556 catabolic process Effects 0.000 claims description 4
- 239000012212 insulator Substances 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000004088 simulation Methods 0.000 abstract description 14
- 238000012360 testing method Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000000523 sample Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036278 prepulse Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The invention provides a bounded wave antenna initial section for generating a fast front edge radiation field, relates to a bounded wave antenna electromagnetic pulse simulation device, and solves the problem that the prior art cannot generate the fast front edge radiation field. The device comprises an insulation cavity, an upper starting polar plate, a bounded wave antenna transition polar plate, a peaking capacitor, a high-voltage lead-in conductor and an output switch; the upper starting polar plate, the peaking capacitor and the output switch are packaged in an insulating cavity; the insulating cavity is filled with insulating gas medium; the high-voltage lead-in conductor penetrates through the insulating cavity from the outside and is electrically connected with the output switch; the central axis of the peaking capacitor is vertically arranged with a contact connecting line of an upper electrode of the output switch and a lower electrode of the output switch; the peaking capacitor is disposed conformal to the bounded wave antenna transition plate.
Description
Technical Field
The invention belongs to the technical field of electromagnetic pulse environment simulation generation, relates to a bounded wave antenna electromagnetic pulse simulation device, and particularly relates to a bounded wave antenna initial section for generating a fast front edge radiation field.
Background
In the strong electromagnetic pulse analog generation technology, a bounded wave antenna (bounded wave antenna) is commonly used for generating a vertically polarized or horizontally polarized radiation field, the principle of the bounded wave antenna is simpler than that of a cone antenna, the bounded wave antenna is easier to realize in structure than the cone antenna, a parallel section is used as a working space to generate a uniform radiation field, and a transition section is used as the working space to flexibly adjust the amplitude range of the radiation field. When the bounded wave antenna forms a radiation field, a high-voltage pulse generated by a pulse power device needs to be fed into the front end, and the design of the connection position of the pulse power device and the bounded wave antenna (namely the initial section of the bounded wave antenna) is particularly important for forming a radiation field waveform meeting the standard requirement. The structure of the joint influences the front edge of the loaded pulse high voltage, and when the equivalent inductance is too large, the front edge of the pulse high voltage is too slow, so that the waveform parameters of the radiation field can not meet the requirements.
The method commonly adopted at present comprises the following steps that a peaking capacitor and an output switch which form the last compression link of the pulse power device are vertically arranged, the switch is arranged on the upper side, the capacitor is arranged on the lower side, the upper and lower polar plates of the bounded wave antenna are respectively connected with the output switch and the peaking capacitor, and after the output switch is conducted, the voltage of the peaking capacitor is loaded to the bounded wave antenna. The structure is widely applied to the application occasions with pulse voltage of hundreds of kilovolts, when the loading voltage is lower, the equivalent inductance of a pulse compression loop formed by the peaking capacitor and the output switch is smaller, and the pulse voltage with a faster leading edge can be generated, so that a radiation field waveform meeting the IEC standard requirement (the leading edge is required to be 2.5ns +/-0.5 ns) is formed. However, in a large electromagnetic pulse simulation device, the pulse power device is required to generate a high voltage which can often reach a number MV, and at this time, the size of a peaking capacitor and an output switch which form the last compression link is large, so that the equivalent inductance of a final stage compression loop is too large, and a pulse voltage with a fast leading edge cannot be generated, so that the leading edge of a radiation field generated by the currently publicly reported large bounded wave antenna electromagnetic pulse simulation device is not fast, and is generally more than 5 ns. With the development of a strong electromagnetic pulse technology, a test object is gradually developed from a single component to a whole machine and complete equipment, the test type is gradually developed from a response level test to a threshold test, and the importance of a large electromagnetic pulse device is increasingly highlighted. Therefore, designing a bounded wave antenna for a large electromagnetic pulse simulation device generating a fast front edge radiation field is of great significance to the development of strong electromagnetic pulse simulation generation technology.
Disclosure of Invention
The invention aims to solve the problem that the initial section of a bounded wave antenna of the existing large-scale bounded wave antenna electromagnetic pulse simulation device cannot generate a radiation field with a fast front edge, and provides the initial section of the bounded wave antenna for generating the radiation field with the fast front edge.
In order to achieve the purpose, the invention adopts the technical scheme that:
a bounded wave antenna initial section for generating a fast front edge radiation field comprises an insulation cavity 1, an upper initial polar plate 2, a bounded wave antenna transition polar plate 3, a peaking capacitor 4, a high-voltage lead-in conductor 5 and an output switch 7; the upper starting polar plate 2, the peaking capacitor 4 and the output switch 7 are packaged in the insulating cavity 1; the insulating cavity 1 is filled with an insulating gas medium; the high-voltage lead-in conductor 5 penetrates through the insulating cavity 1 from the outside and is electrically connected with an output switch 7;
the bounded wave antenna transition polar plate 3 comprises an upper transition polar plate 31 and a lower transition polar plate 32;
the output switch 7 comprises an output switch upper electrode 71 and an output switch lower electrode 72;
the upper starting polar plate 2 is arranged between the upper transition polar plate 31 and the upper electrode 71 of the output switch, and the peaking capacitor 4 is arranged between the lower transition polar plate 32 and the lower electrode 72 of the output switch;
the peaking capacitor 4 comprises a plurality of intermediate electrodes 44 connected in series and a thin film medium 45 disposed between the plurality of intermediate electrodes; the plurality of intermediate electrodes 44 are arranged in a tapered manner from the lower transition polar plate 32 to the lower electrode 72 of the output switch, and the contour line of the horizontal section is in a trapezoidal shape;
it is characterized in that:
the central axis of the peaking capacitor 4 is vertically arranged with a contact connecting line of an output switch upper electrode 71 and an output switch lower electrode 72;
the peaking capacitor 4 is arranged in a conformal manner with the bounded wave antenna transition polar plate 3;
the conformal setting refers to: two outer side contour lines of horizontal section contour lines of the plurality of middle electrodes 44 are respectively flush with extension lines of two side edges of the lower transition polar plate 32 of the bounded wave antenna transition polar plate 3; the upper surfaces of all of the intermediate electrodes 44 are flush with the surface of the lower transition plate 32 of the bounded wave antenna transition plate 3.
Further, the plurality of intermediate electrodes 44 and the thin film medium 45 disposed between the plurality of intermediate electrodes are fastened by the high voltage end pressing plate 41, the insulating tie rod 42, and the low voltage end pressing plate 43.
Further, an inter-pole plate insulation convex groove 8 is arranged on the insulation cavity 1, and the inter-pole plate insulation convex groove 8 is arranged between the upper transition pole plate 31 and the lower transition pole plate 32 of the bounded wave antenna transition pole plate 3.
Further, the breakdown voltage of the output switch 7 is adjusted by the pressure of the insulating gas inside the insulating cavity 1.
Further, a high-voltage lead-in insulator 6 is arranged between the high-voltage lead-in conductor 5 and the insulating cavity 1.
Further, the capacitance value of the peaking capacitor 4 is determined by an analog device equivalent loop;
the number of layers of the thin film dielectric 45 is determined by the insulation environment and the designed withstand voltage.
Compared with the prior art, the invention has the beneficial effects that:
1. the peaking capacitor is trapezoidal, the arrangement mode of the peaking capacitor and the output switch is adjusted from the traditional vertical direction overlapping arrangement to the 'L' -shaped vertical arrangement with 90 degrees, the inductance of a peaking discharge loop is reduced, the front edge of a discharge waveform is mainly determined by the output switch, and the front edge of the discharge waveform is determined by the output switch and the peaking capacitor in the non-traditional arrangement mode.
In an electromagnetic pulse simulation device with a higher voltage level, a peaking capacitor is usually required to be designed into a multilayer superposed structure to bear high voltage, and the peaking capacitor has larger stray inductance, so that a fast front edge cannot be generated.
2. In the initial section of the bounded wave antenna designed by the invention, the trapezoidal peaking capacitor and the lower polar plate of the bounded wave antenna are arranged in a conformal manner, the characteristic impedance of the structure is approximately equal to the characteristic impedance of an ideal antenna, and the waveform reflection caused by impedance discontinuity of a radiation field waveform in the transmission process is avoided.
3. In the initial section of the bounded wave antenna designed by the invention, the inside of the insulating cavity is insulated by adopting high-pressure insulating gas, so that the internal devices are ensured not to generate creeping discharge, and the outside of the insulating cavity is provided with the insulating convex groove between the upper polar plate and the lower polar plate of the bounded wave antenna, so that the polar plates are ensured not to generate insulation breakdown.
Drawings
FIG. 1 is a front view of a bounded wave antenna starting section for producing a fast front edge radiation field according to the present invention;
FIG. 2 is a front half-section view of the initial section of a bounded wave antenna for producing a fast front edge radiation field according to the present invention;
FIG. 3 is a top half-sectional view of the start section of a bounded wave antenna for producing a fast front edge radiation field according to the present invention;
FIG. 4 is a top half-sectional view of a peaking capacitor in accordance with the present invention;
FIG. 5 is an isometric view of a peaking capacitor in the present invention;
FIG. 6 is a schematic diagram of the application of the start section of a bounded wave antenna for generating a fast front porch radiation field in an electromagnetic pulse simulation apparatus in accordance with the present invention;
reference numerals:
1-an insulating cavity; 2-starting the polar plate; 3-bounded wave antenna transition polar plate, 31-upper transition polar plate and 32-lower transition polar plate; 4-peaking capacitance, 41-high voltage end pressure plate, 42-insulating pull rod, 43-low voltage end pressure plate, 44-middle electrode, 45-thin film medium; 5-high voltage lead-in conductor; 6-high voltage leading-in insulator; 7-output switch, 71-output switch upper electrode, 72-output switch lower electrode; 8-insulating convex grooves between the polar plates; 9-radiation field measuring probe; 10-a bounded-wave antenna parallel segment; 11-a matching resistor at the end of the bounded wave antenna; 12-preceding pulse Source.
Detailed Description
To further clarify the objects, advantages and features of the present invention, a bounded wave antenna initiation section for generating a fast front edge radiation field in accordance with the present invention is described in detail below with reference to the accompanying drawings and the following detailed description. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention and are not intended to limit the scope of the present invention.
A bounded wave antenna initial section for generating a fast front edge radiation field comprises an insulation cavity 1, an upper initial polar plate 2, a bounded wave antenna transition polar plate 3, a peaking capacitor 4, a high-voltage lead-in conductor 5 and an output switch 7; the upper starting pole plate 2, the peaking capacitor 4 and the output switch 7 are packaged in the insulating cavity 1, and the insulating cavity 1 is filled with insulating gas medium, so that the problem that all parts in the insulating cavity 1 are not insulated is solved.
The high-voltage lead-in conductor 5 penetrates through the insulating cavity 1 from the outside to be electrically connected with the output switch 7, a high-voltage lead-in insulator 6 is arranged between the insulating cavity 1 and the high-voltage lead-in conductor 5, and the breakdown voltage of the output switch 7 is adjusted through the pressure of insulating gas in the insulating cavity 1.
The bounded wave antenna transition polar plate 3 comprises an upper transition polar plate 31 and a lower transition polar plate 32, the upper starting polar plate 2 is arranged between the upper transition polar plate 31 and an output switch upper electrode 71, and the peaking capacitor 4 is arranged between the lower transition polar plate 32 and an output switch lower electrode 72; the peaking capacitor 4 is a trapezoidal peaking capacitor, and includes a plurality of square flat plate middle electrodes 44 with rounded corners connected in series and a thin film medium 45 arranged between the plurality of middle electrodes 44, the plurality of middle electrodes 44 are arranged in a gradually reducing manner from the lower transition electrode plate 32 to the lower electrode 72 of the output switch, that is, the length of the square flat plate of the middle electrode 44 is gradually reduced in the horizontal direction, the outline of the horizontal section is trapezoidal as a whole, and a trapezoidal structure is formed in the horizontal direction. . The plurality of intermediate electrodes 44 and the thin film medium 45 disposed between the plurality of intermediate electrodes are fastened by the high voltage end pressing plate 41, the insulating tie rod 42, and the low voltage end pressing plate 43. The capacitance of the peaking capacitor 4 is determined by the analog device equivalent circuit, and the number of layers of the thin film dielectric 45 is determined by the insulation environment and the design withstand voltage.
The central axis of the peaking capacitor 4 is vertically arranged at 90 degrees with the contact connecting line of the output switch upper electrode 71 and the output switch lower electrode 72, the peaking capacitor 4 is arranged in a conformal way with the bounded wave antenna transition polar plate 3, and the conformal arrangement means that: two outer side contour lines of horizontal section contour lines of the plurality of middle electrodes 44 are respectively flush with extension lines of two sides of the lower transition polar plate 32 of the bounded wave antenna transition polar plate 3; the upper surfaces of all the intermediate electrodes 44 are flush with the surface of the lower transition plate 32 of the bounded wave antenna transition plate 3.
The insulating cavity 1 is provided with an inter-pole insulating convex groove 8, and the inter-pole insulating convex groove 8 is arranged between an upper transition pole plate 31 and a lower transition pole plate 32 of the bounded wave antenna transition pole plate 3, so that the upper pole plate and the lower pole plate of the bounded wave antenna transition pole plate 3 are prevented from generating surface flashover.
The device is applied to an electromagnetic pulse simulation device, and is mounted on the electromagnetic pulse simulation device after being processed according to the requirements of electromagnetic pulse simulation experiment parameter indexes to carry out air tightness test.
As shown in fig. 6, the initial section of the bounded wave antenna is connected with a preceding pulse source 12, a parallel section 10 of the bounded wave antenna and a matching resistor 11 at the tail end of the bounded wave antenna.
Calibrating the radiation field measuring probe 9 in the GTEM cell or the TEM cell to obtain the frequency response and the sensitivity coefficient of the radiation field measuring probe 9, and then placing the radiation field measuring probe 9 at a measuring point in the radiation space of the bounded wave antenna; the pressure of the gaseous insulating medium in the insulating chamber 1 of the pre-pulse source 12 and the start section of the bounded wave antenna is adjusted to a preset value.
The pre-stage pulse source 12 generates a high-voltage pulse, the high-voltage pulse is fed to the peaking capacitor 4 through the high-voltage lead-in conductor 5, then the output switch 7 is conducted, the high-voltage pulse with a faster front edge is generated after a pulse compression link formed by the peaking capacitor 4 and the output switch 7 and fed to the bounded wave antenna transition polar plate 3 and the parallel section 10 thereof, a radiation field is formed in a test area between an upper polar plate and a lower polar plate, the waveform of the radiation field is collected by the radiation field measuring probe 9 and then is transmitted to data processing equipment, and the waveform parameters of the radiation field can be interpreted.
Experiments prove that the arrangement mode of the peaking capacitor 4 and the output switch 7 is adjusted from the traditional vertical overlapping arrangement mode to the L-shaped vertical arrangement mode that the peaking capacitor and the output switch are 90 degrees, and the inductance of a peaking discharge loop is reduced. The leading edge of the discharge waveform is determined primarily by the output switch, rather than by both the output switch and the peaking capacitor as in conventional arrangements.
In order to endure high voltage in an electromagnetic pulse simulation device with a higher voltage level, the peaking capacitor 4 is often designed into a multilayer superposed structure and has larger stray inductance, so that a fast front edge cannot be generated.
The peaking capacitor 4 and the lower transition plate 32 of the bounded wave antenna transition plate 3 are arranged in a conformal mode, the characteristic impedance of the structure is approximately equal to the characteristic impedance of an ideal antenna, and wave reflection caused by impedance discontinuity of a radiation field wave in the transmission process is avoided.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill 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 (6)
1. A bounded wave antenna starting section for generating a fast front edge radiation field comprises an insulation cavity (1), an upper starting pole plate (2), a bounded wave antenna transition pole plate (3), a peaking capacitor (4), a high-voltage lead-in conductor (5) and an output switch (7); the upper starting polar plate (2), the peaking capacitor (4) and the output switch (7) are packaged in the insulating cavity (1); the insulating cavity (1) is filled with an insulating gas medium; the high-voltage lead-in conductor (5) penetrates through the insulating cavity (1) from the outside and is electrically connected with the output switch (7);
the bounded wave antenna transition polar plate (3) comprises an upper transition polar plate (31) and a lower transition polar plate (32);
the output switch (7) comprises an output switch upper electrode (71) and an output switch lower electrode (72);
the upper starting polar plate (2) is arranged between the upper transition polar plate (31) and the upper electrode (71) of the output switch, and the peaking capacitor (4) is arranged between the lower transition polar plate (32) and the lower electrode (72) of the output switch;
the peaking capacitor (4) comprises a plurality of intermediate electrodes (44) connected in series and a thin film medium (45) disposed between the plurality of intermediate electrodes; the plurality of middle electrodes (44) are arranged in a gradually reducing way from the lower transition polar plate (32) to the lower electrode (72) of the output switch, and the contour line of the horizontal section is in a trapezoid shape;
the method is characterized in that:
the central axis of the peaking capacitor (4) is vertically arranged with a contact connecting line of an output switch upper electrode (71) and an output switch lower electrode (72);
the peaking capacitor (4) is arranged in a conformal manner with the bounded wave antenna transition polar plate (3);
the conformal setting refers to: two outer side contour lines of horizontal section contour lines of the plurality of middle electrodes (44) are respectively flush with extension lines of two side edges of a lower transition polar plate (32) of the bounded wave antenna transition polar plate (3); the upper surfaces of all the middle electrodes (44) are flush with the surface of the lower transition pole plate (32) of the boundary wave antenna transition pole plate (3).
2. The bounded-wave antenna launch section for generating a fast-front radiation field according to claim 1, wherein:
the plurality of intermediate electrodes (44) and the thin film medium (45) arranged among the plurality of intermediate electrodes are fastened through a high-voltage end pressure plate (41), an insulating pull rod (42) and a low-voltage end pressure plate (43).
3. The bounded-wave antenna starting section for generating a fast-front radiation field according to claim 1 or 2, characterized in that:
an inter-pole plate insulation convex groove (8) is arranged on the insulation cavity (1), and the inter-pole plate insulation convex groove (8) is arranged between an upper transition pole plate (31) and a lower transition pole plate (32) of the bounded wave antenna transition pole plate (3).
4. The bounded-wave antenna launch section for generating a fast-front radiation field according to claim 3, wherein:
the breakdown voltage of the output switch (7) is adjusted by the pressure of the insulating gas in the insulating cavity (1).
5. The bounded-wave antenna launch section for generating a fast-front radiation field according to claim 4, wherein:
and a high-voltage leading-in insulator (6) is arranged between the high-voltage leading-in conductor (5) and the insulating cavity (1).
6. The bounded-wave antenna launch section for generating a fast-front radiation field according to claim 5, wherein:
the capacitance value of the peaking capacitor (4) is determined by an equivalent circuit of an analog device;
the number of layers of the thin film medium (45) is determined by the insulation environment and the design withstand voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111006111.XA CN113937487A (en) | 2021-08-30 | 2021-08-30 | Bounded wave antenna initial section for generating fast front edge radiation field |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111006111.XA CN113937487A (en) | 2021-08-30 | 2021-08-30 | Bounded wave antenna initial section for generating fast front edge radiation field |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB994527A (en) * | 1963-03-01 | 1965-06-10 | Ass Elect Ind | Improvements relating to testing apparatus for electrical insulation |
| GB0701087D0 (en) * | 2007-01-19 | 2007-02-28 | Plasma Antennas Ltd | A displaced feed parallel plate antenna |
| CN111323674A (en) * | 2020-04-29 | 2020-06-23 | 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 | Multifunctional electromagnetic pulse simulation experiment system with shared antenna |
| CN111337757A (en) * | 2020-04-29 | 2020-06-26 | 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 | Pulse source output structure meeting electric field waveform invariance and matching with different antennas |
| CN112540246A (en) * | 2020-10-30 | 2021-03-23 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Bounded wave strong electromagnetic pulse simulation system |
| CN112786308A (en) * | 2020-12-29 | 2021-05-11 | 西北核技术研究所 | Magnetic voltage connection electrode structure, peaking capacitor and megavolt electromagnetic pulse simulator |
-
2021
- 2021-08-30 CN CN202111006111.XA patent/CN113937487A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB994527A (en) * | 1963-03-01 | 1965-06-10 | Ass Elect Ind | Improvements relating to testing apparatus for electrical insulation |
| GB0701087D0 (en) * | 2007-01-19 | 2007-02-28 | Plasma Antennas Ltd | A displaced feed parallel plate antenna |
| CN111323674A (en) * | 2020-04-29 | 2020-06-23 | 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 | Multifunctional electromagnetic pulse simulation experiment system with shared antenna |
| CN111337757A (en) * | 2020-04-29 | 2020-06-26 | 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 | Pulse source output structure meeting electric field waveform invariance and matching with different antennas |
| CN112540246A (en) * | 2020-10-30 | 2021-03-23 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Bounded wave strong electromagnetic pulse simulation system |
| CN112786308A (en) * | 2020-12-29 | 2021-05-11 | 西北核技术研究所 | Magnetic voltage connection electrode structure, peaking capacitor and megavolt electromagnetic pulse simulator |
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