CN105048045B - A kind of cross-couplings magnetic saturation nonlinear transport cable architecture - Google Patents
A kind of cross-couplings magnetic saturation nonlinear transport cable architecture Download PDFInfo
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- CN105048045B CN105048045B CN201510552820.6A CN201510552820A CN105048045B CN 105048045 B CN105048045 B CN 105048045B CN 201510552820 A CN201510552820 A CN 201510552820A CN 105048045 B CN105048045 B CN 105048045B
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Abstract
The invention discloses a kind of cross-couplings magnetic saturation nonlinear transport cable architecture, including coaxial rectangle outer barrel, outer cover and coaxial inner core, rectangle outer barrel is connected to one by screw with outer cover and is sealing space in rectangle outer barrel, the coaxial inner core is arranged in rectangle outer barrel, and transformer oil is filled with rectangle outer barrel, coaxial inner core includes several metal derby inner cores, ceramic dielectric block and conductor rods, metal derby is symmetrically and evenly distributed in the upper side and lower side of coaxial line, output is input to from coaxial inner core, conductor rods are connected in turn on the upside of coaxial line between the metal derby of downside, ceramic dielectric block is provided with the upside of coaxial line or between the metal derby and metal derby of downside, the outer surface of glass tube is cased with FERRITE CORE；The cross-couplings magnetic saturation nonlinear transmission line concrete structure with high power capacity can be constructed using the present invention, the generation of high power RF pulse is realized, solves to produce the technical barrier of High-Power Microwave using nonlinear transmission line.
Description
Technical field
The present invention relates to High-Power Microwave technical field, more particularly, to a kind of cross-couplings magnetic saturation nonlinear transmission line
Structure.
Background technology
Nonlinear transmission line（NLTL）It is current High-Power Microwave（HPM）Radiation appliance produces the effective way of electromagnetic pulse
One of.It utilizes magnetic saturation NLTL non-linear and strong dispersion characteristic, the high pressure long pulse of feed-in directly can be converted into radio frequency
Pulse is exported, and advantage is that it need not drive electron beam, confining magnetic field system and vacuum system compared with traditional HPM devices,
The centre frequency and phase of electromagnetic pulse can also be exported by setting the original state of inductance core to adjust simultaneously, so as to reality
Existing space power synthesis, beam scanning and frequency dynamic adjustment.Nonlinear transmission line has two kinds of technology paths, and one kind is based on non-
Linear capacitance, another is to be based on nonlinear inductance.Due to the NLTL based on nonlinear inductance, with volume compact, energy dose-effect
Rate it is high and can electric frequency modulation, electric phase modulation the features such as.The effect of cross coupling capacitor is to strengthen the dispersion interaction of NLTL circuits, can
To realize fast starting of oscillation.
Entitled " HPM systems based on NLTL technologies " article（IET Conference
on High Power RF Technologies, 2009: 548）Disclose a kind of cross-couplings magnetic saturation nonlinear transmission line
Schematic diagram, as shown in Figure 1.But specific structure has no report, also there are no similar structure and discloses.
The content of the invention
The purpose of the present invention is, by a kind of rational structure design, to realize that the cross-couplings magnetic with high power capacity is satisfied
And NLTL, realize and produce high power RF pulse output using NLTL.
To achieve the above object, the present invention is adopted the following technical scheme that:
A kind of cross-couplings magnetic saturation nonlinear transport cable architecture, including coaxial rectangle outer barrel, outer cover and coaxial inner core,
The rectangle outer barrel is connected to one by screw with outer cover and is sealing space in rectangle outer barrel, described
Coaxial inner core is arranged in rectangle outer barrel, and filled with transformer oil, the high voltage breakdown voltage of transformer oil in rectangle outer barrel
Not less than 40kV,
The coaxial inner core includes several metal derby inner core, ceramic dielectric block and conductor rods, and metal derby symmetrically and evenly divides
Cloth is shifted to install on the upside of the upper side and lower side of coaxial line, coaxial line with the metal derby of downside on coaxial vertical line,
From the output that is input to of coaxial inner core, conductor rods are connected in turn on the upside of coaxial line between the metal derby of downside,
Ceramic dielectric block is provided with the upside of coaxial line or between the metal derby and metal derby of downside,
The conductor rods appearance is cased with the lucite tube that insulate, and the outer surface of glass tube is cased with FERRITE CORE,
The metal derby inner core is not contacted with the inwall of coaxial rectangle outer barrel.
In the above-mentioned technical solutions, the outer barrel, which is covered, is provided with stomata, and stomata, which runs through on outer cover, stomata, is provided with hole
Plug.
In the above-mentioned technical solutions, 1 to 2 atmospheric pressure is injected into the coaxial rectangle outer barrel of good seal by stomata
SF6 gases.
In the above-mentioned technical solutions, the conductor rods, glass tube, FERRITE CORE are cylinder, and three connects.
In the above-mentioned technical solutions, set fluted on the two sides of the ceramic dielectric block opposition, metal derby inner core
One end is inserted in a groove of a ceramic dielectric.
In the above-mentioned technical solutions, the full-size of the metal derby inner core and cylindrical conductor bar is less than pattern-band and L-band
/ 10th of wavelength.
The present invention operation principle be：When input high power pulse by when, in NLTL produce two parallel procedures,
It is non-linear process first：High-voltage pulse current passes through NLTL cell rings type ferrite magnetic cores, and FERRITE CORE is rapidly by non-full
Saturation state is magnetized to state（Pulsactor L）, the forward position of feed-in pulse is produced before the shock wave of mutation；Second process
Dispersion process：The electric capacity C that is made up of rectangular coaxial structure inner core metal derby, ceramic dielectric and rectangular coaxial structure outer wall and by ring
The pulsactor of shape FERRITE CORE structure and the ceramic dielectric by two adjacent rectangular coaxial structure inner core metal derbies and centre
Artificial transmission line's circuit with cross coupling capacitor that the cross coupling capacitor C ' of composition is collectively formed（Cross coupling capacitor
Effect is increase dispersion interaction）, with unique dispersion relation, when being transmitted before the shock wave of formation in this boostrap, excitation
The oscillating electromagnetic pulse group velocity Vg gone out is less than step forward position spread speed Vs, and energy is gradually with oscillating electromagnetic waveshape toward after pulse
Along spreading, high-frequency electromagnetic pulse is being modulated along along NLTL transmitting procedures.In order to realize high power capacity, whole NLTL is coaxially tied
Transformer oil experiment high power capacity is filled in structure.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：It can be built using the present invention
Go out the cross-couplings magnetic saturation nonlinear transmission line concrete structure with high power capacity, realize the production of high power RF pulse
It is raw, solve to produce the technical barrier of High-Power Microwave using nonlinear transmission line.
Brief description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein：
Fig. 1 is cross-couplings magnetic saturation NLTL theory diagrams；
Fig. 2 is the structural profile schematic diagram of the present invention；
Fig. 3 is Fig. 2 A-A ' views；
Fig. 4 is NLTL structure node electric capacity C-structure schematic diagrames；
Fig. 5 is cross coupling capacitor C ' structural representations between NLTL structure nodes；
Fig. 6 is NLTL structure node induction structure schematic diagrames；
Fig. 7 is that fork coupling magnetic saturation NLTL design example schematics are filled in high power friendship；
Fig. 8 is NLTL feed-in pulses；
Fig. 9 is the radio-frequency pulse that NLTL is produced；
Figure 10 is the RF pulse spectrum that NLTL is produced；
Wherein：1 is rectangular coaxial structure outer barrel；2 be metal derby inner core；3 be ceramic dielectric block；4 be cylindrical conductor bar；5
It is insulation lucite tube；6 be annular ferrite core；7 be transformer oil.
Embodiment
As shown in Fig. 1, the figure is entitled " HPM systems based on NLTL technologies " article
（IET Conference on High Power RF Technologies, 2009: 548）A kind of disclosed cross-couplings magnetic
Saturation nonlinearity transmission line schematic diagram, has had no that corresponding structure or equipment are disclosed always since being disclosed from this article.
The present invention is, by rectangular coaxial line structure design, to construct cross-couplings magnetic on the basis of article disclosed above
Electric capacity, inductance and cross coupling capacitor required by saturation nonlinearity transmission line, realize cross-couplings magnetic saturation nonlinear transport
Line circuit.
The structure of the present invention as shown in Figure 2 and Figure 3, is mainly made up of following several parts：Rectangular coaxial structure outer barrel, gold
Belong to block inner core, ceramic dielectric block, cylindrical conductor bar, insulation lucite tube, annular ferrite core, insulating transformer oil to be situated between
Matter.The full nonlinear transmission line of the cross-couplings magnetic of the present invention can be operated in P and L-band.High power pulse signal is from NLTL mono-
Hold after feed-in, non-linear and dispersion interaction is being passed through in pulse, finally realizes the generation of high power RF pulse.
Specific implementation uses following design：
1）High power capacity is designed
To improve power capacity on the premise of circuit performance index is met, maximum field strength knot should be found out by numerical simulation
Structure position, electric-field intensity is reduced by measures such as wedge angle roundings.When ceramic medium material is chosen, free from admixture and slit should be selected
Close 95 higfh-tension ceramics of matter of excellent in insulation characteristic.
In order to realize NLLT high power capacity, employ transformer oil and realize high-voltage isulation.Will in practical application
Transformer oil carries out multiple times of filtration, it is ensured that transformer oil cleans free from admixture, and through suppressing experiment, high voltage breakdown voltage should be not less than
40kV.It is first that each processing components of NLTL is clean with alcohol washes during assembling, surface and oil contaminant is removed, and is put into baking oven and is toasted.
Each part is arranged in NLTL rectangular coaxial structures again after the completion of baking, the cleaning transformer oil after injection filtering.To prevent
High-voltage breakdown, conductor pin and two metal derby inner cores connection must fasten；It is a small amount of in coaxial configuration transformer oil to remove
Bubble is, it is necessary to device progress slight vibration, while the SF6 gases of 1-2 atmospheric pressure can be filled to coaxial configuration, pass through
SF6 gases reduce the diameter of bubble or exclude bubble to the air pressurized in transformer oil.
2）Rectangular coaxial structure
Cross-couplings magnetic saturation nonlinear transmission line is made up of rectangular coaxial structure, as shown in Figure 2 and Figure 3, simultaneously passes through lid
Plate realizes oil seal.Wherein coaxial configuration outer barrel is rectangular box, the welding of three faces；Coaxial configuration inner core in rectangular cavity up and down two
Layer metal derby inner core and cylindrical conductor bar are constituted；Filled media in coaxial configuration is made up of transformer oil and ceramic block.
The reason for realizing NLTL using rectangular coaxial structure be：One is that can transmit monochromatic TEM ripples；Two be that by compared with
High power capacity；Three be that metal derby and cylindrical conductor bar full-size are a small amount of relative to P and L-band microwave wavelength（No
To 1/10th）, therefore big influence is not caused to microwave transmission with the size of knot core arrangement；Four are easy for and pulse power
Source and load are connected.
3）Electric capacity C physical arrangement in NLTL circuits
The physics realization of node capacitor C in cross-couplings magnetic saturation nonlinear transmission line theory diagram 1 is by coaxial configuration
Middle rectangular metal block inner core, ceramic dielectric block, transformer oil and coaxial configuration outer barrel are completed.Concrete structure is as shown in Figure 4.Wherein
Because ceramic dielectric constant is high（Dielectric constant is 9）, therefore electric capacity is main by metal derby inner core, two sides of ceramic dielectric and outer barrel
Wall is constituted.Perforate between being covered on medium block and outer barrel is for the ease of transformer oil between metal derby inner core and ceramic dielectric block
The discharge of middle bubble.
4）Cross coupling capacitor C ' physical arrangement in NLTL circuits
Cross-couplings C ' physics realization is by same between node in cross-couplings magnetic saturation nonlinear transmission line theory diagram 1
Two adjacent rectangular metal block inner cores, ceramic dielectric block completion in axle construction with layer.Concrete structure is as shown in Figure 5.
5）Core inductance L physical arrangement in NLTL circuits
Node inductance in cross-couplings magnetic saturation nonlinear transmission line theory diagram 1 is as shown in fig. 6, by with following several
Part is constituted：Annular ferrite core；Cylindrical conductor bar；Insulate lucite tube.The lucite tube that insulate provides cylindrical conductor
High-voltage isulation between bar and annular ferrite core.Cylindrical conductor bar is tied as a part for coaxial configuration inner core when coaxial
The pulse current of structure transmission by when, cause the magnetic flux change of annular ferrite core, realize that FERRITE CORE is rapid by non-
Saturation state is magnetized to the transition of saturation state, and pulsactor is L.
A set of high power nonlinear transmission line for producing centre frequency about 300MHz is devised by above-mentioned technical proposal, tied
Structure is as shown in Figure 7.
Wherein:8 be cross-couplings magnetic saturation NLTL, and it act as producing radio-frequency pulse.
9 be high-power resistor matched load, for absorbing the high power RF pulse of NLTL generations.
10 be for capacitive divider, respectively positioned at NLTL feed sides and output end, to be respectively used to measure and be fed into NLTL's
The RF pulse signal that high-voltage pulse and NLTL are produced.
11 be high-voltage switch gear, pulse-forming line is collectively constituted with pulse shaping circuit, for producing wide pulse signal.
NLTL feed-ins pulse and the RF pulse signal produced can be measured simultaneously by the passage of oscillograph two.It is fed into NLTL
Pulse signal it is as shown in Figure 8.Feed-in impulse amplitude about 35kV, pulse semi-width about 60ns.The RF pulse signal that NLTL is produced
As shown in Figure 9.Strength pulse peak-to-peak value about 31kV.The RF pulse spectrum that NLTL is produced is as shown in Figure 10, centre frequency
308MHz, three dB bandwidth about 13%.
Pass through the present invention, it is possible to realize the high power RF pulses generation of cross-couplings magnetic saturation transmission line.
The invention is not limited in foregoing embodiment.The present invention, which is expanded to, any in this manual to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (6)
1. a kind of cross-couplings magnetic saturation nonlinear transport cable architecture, it is characterised in that including coaxial rectangle outer barrel, outer cover and
Coaxial inner core,
The rectangle outer barrel is connected to one by screw with outer cover and is sealing space in rectangle outer barrel, described coaxial
Inner core is arranged in rectangle outer barrel, and filled with transformer oil in rectangle outer barrel, the high voltage breakdown voltage of transformer oil is not small
In 40kV,
The coaxial inner core includes several metal derby inner cores, and the metal derby inner core is symmetrically and evenly distributed in coaxial rectangle outer barrel
Metal derby inner core in the upper side and lower side of interior axis, coaxial rectangle outer barrel on the upside of axis with downside is in coaxial rectangle outer barrel interior axle
Shifted to install on the vertical line of line,
From the output that is input to of coaxial inner core, conductor rods are connected to the metal on the upside of axis with downside in coaxial rectangle outer barrel in turn
Between block inner core, ceramics are provided with the upside of axis or between the metal derby inner core and metal derby inner core of downside in coaxial rectangle outer barrel
Medium block,
The conductor rods appearance is cased with the lucite tube that insulate, and the outer surface of glass tube is cased with FERRITE CORE,
The metal derby inner core is not contacted with the inwall of coaxial rectangle outer barrel；
During nonlinear transport, metal derby inner core, ceramic dielectric block and rectangular coaxial structure outer wall in rectangular coaxial structure
The electric capacity of composition and the pulsactor being made up of annular ferrite core and by two adjacent metal derby inner cores and ceramics
The cross coupling capacitor that medium is constituted collectively forms the transmission line circuit with cross coupling capacitor.
2. a kind of cross-couplings magnetic saturation nonlinear transport cable architecture according to claim 1, it is characterised in that described outer
Stomata is provided with cover, stomata, which runs through on outer cover, stomata, is provided with stopple.
3. a kind of cross-couplings magnetic saturation nonlinear transport cable architecture according to claim 2, it is characterised in that pass through gas
The SF6 gases of 1 to 2 atmospheric pressure are injected in hole into the coaxial rectangle outer barrel of good seal.
4. a kind of cross-couplings magnetic saturation nonlinear transport cable architecture according to claim 1, it is characterised in that described to lead
Body rod, glass tube, the profile of FERRITE CORE are cylinder, and the glass tube is enclosed on conductor rods, the FERRITE CORE
It is enclosed on glass tube.
5. a kind of cross-couplings magnetic saturation nonlinear transport cable architecture according to claim 1, it is characterised in that the pottery
Set fluted on the two sides of ceramic dielectric block opposition, a groove of a ceramic dielectric is inserted in one end of metal derby inner core
It is interior.
6. a kind of cross-couplings magnetic saturation nonlinear transport cable architecture according to claim 1, it is characterised in that the gold
The full-size for belonging to block inner core and cylindrical conductor bar is less than 1/10th of pattern-band and L-band wavelength.
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| CN204905404U (en) * | 2015-09-02 | 2015-12-23 | 中国工程物理研究院应用电子学研究所 | Cross coupling magnetic saturation nonlinearity transmission line structure |
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| CN204905404U (en) * | 2015-09-02 | 2015-12-23 | 中国工程物理研究院应用电子学研究所 | Cross coupling magnetic saturation nonlinearity transmission line structure |
Non-Patent Citations (3)
| Title |
|---|
| HPM systems based on NLTL technologies;C.R. Spikings等;《High Power RF Technologies, 2009. IET. Conference on》;20090226;1－3 * |
| 非线性传输线产生射频脉冲原理研究;谢平等;《强激光与例子束》;20140430;1－5 * |
| 非线性传输线数值模拟方法;廖勇等;《强激光与粒子束》;20150831;1－6 * |
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