CN105048045A - Cross coupling magnetic saturation nonlinear transmission line structure - Google Patents
Cross coupling magnetic saturation nonlinear transmission line structure Download PDFInfo
- Publication number
- CN105048045A CN105048045A CN201510552820.6A CN201510552820A CN105048045A CN 105048045 A CN105048045 A CN 105048045A CN 201510552820 A CN201510552820 A CN 201510552820A CN 105048045 A CN105048045 A CN 105048045A
- Authority
- CN
- China
- Prior art keywords
- coaxial
- magnetic saturation
- urceolus
- metal derby
- inner core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
- Plasma Technology (AREA)
Abstract
The invention discloses a cross coupling magnetic saturation nonlinear transmission line structure comprising a coaxial rectangular external cylinder, an external cylinder cover and a coaxial internal core. The rectangular external cylinder and the external cylinder cover are fixedly connected as a whole via screws, and the rectangular external cylinder is internally provided with a sealing space. The coaxial internal core is arranged in the rectangular external cylinder, and the rectangular external cylinder is internally filled with transformer oil. The coaxial internal core comprises multiple metal block internal cores, ceramic dielectric blocks and conductor rods. The metal blocks are symmetrically and evenly distributed at the upper side and the lower side of the coaxial line. The conductor rods are successively connected between the metal blocks arranged at the upper side and the lower side of the coaxial line from input to output of the coaxial internal core. The ceramic dielectric blocks are arranged between the metal blocks arranged at the upper side or the lower side of the coaxial line. The external surface of a glass tube is sleeved by a ferrite magnetic core. The cross coupling magnetic saturation nonlinear transmission line concrete structure with high power capacity can be constructed so that generation of high-power radio frequency pulse can be realized, and a technical problem of generating high-power microwave by utilizing the nonlinear transmission line can be solved.
Description
Technical field
The present invention relates to High-Power Microwave technical field, especially relate to a kind of cross-couplings magnetic saturation nonlinear transport line structure.
Background technology
Nonlinear transmission line (NLTL) is that current High-Power Microwave (HPM) radiation appliance produces one of effective way of electromagnetic pulse.It utilizes the non-linear of magnetic saturation NLTL and strong dispersion characteristic, directly the high pressure long pulse of feed-in can be converted to radio-frequency pulse to export, advantage is that it is without the need to driving electron beam, confining magnetic field system and vacuum system compared with traditional HPM device, simultaneously also by arranging centre frequency and the phase place of the initial condition regulation output electromagnetic pulse of inductance core, thus can implementation space power combing, beam scanning and frequency dynamic adjustment.Nonlinear transmission line has two kinds of technology paths, and one is based on nonlinear capacitance, and another kind is based on nonlinear inductance.Due to the NLTL based on nonlinear inductance, there is volume compact, energy efficiency high and can the feature such as electric frequency modulation, electric phase modulation.The effect of cross coupling capacitor is the dispersion interaction strengthening NLTL circuit, can realize fast starting of oscillation.
Name is called that the article (IETConferenceonHighPowerRFTechnologies, 2009:548) of " HPMsystemsbasedonNLTLtechnologies " discloses a kind of cross-couplings magnetic saturation nonlinear transmission line schematic diagram, as shown in Figure 1.But concrete structure has no report, also open there are no analog structure.
Summary of the invention
The object of the invention is by the rational structural design of one, realize the cross-couplings magnetic saturation NLTL with high power capacity, realize utilizing NLTL to produce high power RF pulse and export.
For achieving the above object, the present invention adopts following technical scheme:
A kind of cross-couplings magnetic saturation nonlinear transport line structure, comprises coaxial rectangle urceolus, outer cover and coaxial inner core,
Described rectangle urceolus and outer cover are connected to one by screw and are seal cavity in rectangle urceolus, and described coaxial inner core is arranged in rectangle urceolus, and in rectangle urceolus, be filled with transformer oil, and the high voltage breakdown voltage of transformer oil is not less than 40kV,
Described coaxial inner core comprises several metal derby inner core, ceramic dielectric block and conductor rods, and metal derby is distributed in the upper side and lower side of coaxial line symmetrically and evenly, shifts to install on the upside of coaxial line with the metal derby of downside on coaxial vertical line,
Be input to output from coaxial inner core, conductor rods is connected in turn on the upside of coaxial line and between the metal derby of downside, is provided with ceramic dielectric block between the metal derby of on the upside of coaxial line or downside and metal derby,
Described conductor rods appearance cover has insulation lucite tube, and the appearance surface cover of glass tube has FERRITE CORE,
Described metal derby inner core does not contact with the inwall of coaxial rectangle urceolus.
In technique scheme, described urceolus covers and is provided with pore, and pore runs through outer cover, and pore is provided with stopple.
In technique scheme, in the coaxial rectangle urceolus of good seal, injected the SF6 gas of 1 to 2 atmospheric pressure by pore.
In technique scheme, described conductor rods, glass tube, FERRITE CORE are cylindrical, and three connects.
In technique scheme, the two sides of described ceramic dielectric block opposition are provided with groove, and one end of metal derby inner core is inserted in a groove of a ceramic dielectric.
In technique scheme, the full-size of described metal derby inner core and cylindrical conductor bar is less than 1/10th of pattern-band and L-band wavelength.
Operation principle of the present invention is: when the high power pulse inputted passes through, two parallel procedures are produced in NLTL, first be non-linear process: high-voltage pulse current is through NLTL cell rings type ferrite magnetic core, FERRITE CORE is magnetized to saturation condition (pulsactor L) by unsaturated state rapidly, before making the forward position of feed-in pulse produce the shock wave of sudden change, second process dispersion process: by rectangular coaxial structure inner core metal derby, artificial transmission's line circuit (effect of cross coupling capacitor increases dispersion interaction) with cross coupling capacitor that the cross coupling capacitor C ' that the electric capacity C that ceramic dielectric and rectangular coaxial structure outer wall are formed and the pulsactor by annular ferrite core structure and the ceramic dielectric by two adjacent rectangular coaxial structure inner core metal derbies and centre are formed is formed jointly, there is unique dispersion relation, when transmitting in this boostrap before the shock wave formed, the oscillating electromagnetic pulse group velocity Vg motivated is lower than step forward position propagation velocity Vs, energy spreads toward pulse back edge with oscillating electromagnetic waveshape gradually, high-frequency electromagnetic pulse is being modulated along in NLTL transmitting procedure.In order to realize high power capacity, in whole NLTL coaxial configuration, fill transformer oil experiment high power capacity.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows: the cross-couplings magnetic saturation nonlinear transmission line concrete structure utilizing the present invention to construct to have high power capacity, realize the generation of high power RF pulse, solve the technical barrier utilizing nonlinear transmission line to produce High-Power Microwave.
Accompanying drawing explanation
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 diagram;
Fig. 2 is structural profile schematic diagram of the present invention;
Fig. 3 is the A-A ' view of Fig. 2;
Fig. 4 is NLTL structure node electric capacity C-structure schematic diagram;
Fig. 5 is cross coupling capacitor C ' structural representation between NLTL structure node;
Fig. 6 is NLTL structure node induction structure schematic diagram;
Fig. 7 is that fork coupling magnetic saturation NLTL design example schematic diagram is filled in high power friendship;
Fig. 8 is NLTL feed-in pulse;
Fig. 9 is the radio-frequency pulse that NLTL produces;
Figure 10 is the RF pulse spectrum that NLTL produces;
Wherein: 1 is rectangular coaxial structure urceolus; 2 is metal derby inner cores; 3 is ceramic dielectric block; 4 is cylindrical conductor bars; 5 is insulation lucite tubes; 6 is annular ferrite cores; 7 is transformer oil.
Embodiment
As shown in Figure 1, this figure runs after fame and is called the article (IETConferenceonHighPowerRFTechnologies of " HPMsystemsbasedonNLTLtechnologies ", 2009:548) disclosed a kind of cross-couplings magnetic saturation nonlinear transmission line schematic diagram, has had no corresponding structure since open from this article always or equipment is open.
The present invention be on above-mentioned disclosed article basis by rectangular coaxial line structural design, construct electric capacity, inductance and the cross coupling capacitor required by cross-couplings magnetic saturation nonlinear transmission line, realize cross-couplings magnetic saturation nonlinear transport line circuit.
Structure of the present invention as shown in Figure 2 and Figure 3, forms primarily of following several part: rectangular coaxial structure urceolus, metal derby inner core, ceramic dielectric block, cylindrical conductor bar, insulation lucite tube, annular ferrite core, insulating transformer oil medium.Cross-couplings magnetic of the present invention nonlinear transmission line of satisfying can be operated in P and L-band.High power pulse signal is after the feed-in of NLTL one end, and pulse, through non-linear and dispersion interaction, finally realizes the generation of high power RF pulse.
Concrete enforcement adopts following design:
1) high power capacity design
For improving power capacity under the prerequisite meeting circuit performance index, maximum field strength locations of structures should be found out by numerical simulation, reducing electric field strength by measures such as wedge angle roundings.When ceramic medium material is chosen, close 95 higfh-tension ceramicses of matter of free from admixture and hole seam excellent in insulation characteristic should be selected.
In order to realize the high power capacity of NLLT, have employed transformer oil and realizing High-Voltage Insulation.Transformer oil will be carried out multiple times of filtration when practical application, guarantee that transformer oil cleans free from admixture, economy-combat compacting is tested, and high voltage breakdown voltage should be not less than 40kV.First that each for NLTL processing component alcohol washes is clean during assembling, removing surface and oil contaminant, and put into baking oven and toast.Again each parts are arranged in NLTL rectangular coaxial structure after having toasted, inject the clean transformer oil after filtering.For preventing high-voltage breakdown, conductor pin and two metal derby inner cores connection required fastening; For a small amount of bubble in removing coaxial configuration transformer oil, need to carry out slight vibration to device, the SF6 gas of 1-2 atmospheric pressure can be filled simultaneously to coaxial configuration, by SF6 gas to the air pressurized in transformer oil, reduce the diameter of bubble or get rid of bubble.
2) rectangular coaxial structure
Cross-couplings magnetic saturation nonlinear transmission line is made up of rectangular coaxial structure, and as shown in Figure 2 and Figure 3, one side realizes oil seal by cover plate.Wherein coaxial configuration urceolus is rectangular box, three welding; Coaxial configuration inner core is made up of double layer of metal block inner core upper and lower in rectangular cavity and cylindrical conductor bar; Filled media in coaxial configuration is made up of transformer oil and ceramic block.
The reason adopting rectangular coaxial structure to realize NLTL is: one is to transmit monochromatic TEM ripple; Two is to realize higher power capacity; Three be metal derby and cylindrical conductor bar full-size is in a small amount (less than 1/10th) relative to the wavelength of P and L-band microwave, and the size therefore with knot core arrangement does not cause large impact to microwave transmission; Four is be convenient to be connected with pulse power supply and load.
3) physical structure of electric capacity C in NLTL circuit
The physics realization of the node capacitor C in cross-couplings magnetic saturation nonlinear transmission line theory diagram 1 is completed by rectangular metal block inner core, ceramic dielectric block, transformer oil and coaxial configuration urceolus in coaxial configuration.Concrete structure as shown in Figure 4.Wherein due to ceramic dielectric constant high (dielectric constant is 9), therefore electric capacity is formed primarily of metal derby inner core, ceramic dielectric and urceolus two sidewalls.Perforate between medium block and urceolus upper cover is the discharge for the ease of transformer bubble in oil between metal derby inner core and ceramic dielectric block.
4) physical structure of cross coupling capacitor C ' in NLTL circuit
Between the node in cross-couplings magnetic saturation nonlinear transmission line theory diagram 1, the physics realization of cross-couplings C ' completes with two of layer adjacent rectangular metal block inner cores, ceramic dielectric block by coaxial configuration.Concrete structure as shown in Figure 5.
5) physical structure of core inductance L in NLTL circuit
Node inductance in cross-couplings magnetic saturation nonlinear transmission line theory diagram 1 as shown in Figure 6, forms by with following a few part: annular ferrite core; Cylindrical conductor bar; Insulation lucite tube.Insulation lucite tube provides the High-Voltage Insulation between cylindrical conductor bar and annular ferrite core.Cylindrical conductor bar is as a part for coaxial configuration inner core, when the pulse current of coaxial configuration transmission passes through, cause the magnetic flux change of annular ferrite core, realize FERRITE CORE is magnetized to rapidly saturation condition transition by unsaturated state, pulsactor is L.
Devised by technique scheme and a set ofly produce the high power nonlinear transmission line that centre frequency is about 300MHz, structure as shown in Figure 7.
Wherein: 8 is cross-couplings magnetic saturation NLTL, and it act as generation radio-frequency pulse.
9 is high-power resistor matched loads, be used for absorb NLTL produce high power RF pulse.
10 is be capacitor voltage divider, lays respectively at NLTL feed side and output, is respectively used to measure the RF pulse signal of high-voltage pulse and the NLTL generation being fed into NLTL.
11 is high-voltage switch gears, jointly forms pulse forming line, for generation of wide pulse signal with pulse shaping circuit.
The RF pulse signal of NLTL feed-in pulse and generation can be recorded by oscilloscope two passage simultaneously.Be fed into the pulse signal of NLTL as shown in Figure 8.Feed-in pulse amplitude is about 35kV, and pulse semi-width is about 60ns.The RF pulse signal that NLTL produces as shown in Figure 9.Strength pulse peak peak value is about 31kV.NLTL produce RF pulse spectrum as shown in Figure 10, centre frequency 308MHz, three dB bandwidth about 13%.
By the present invention, the high power RF pulses generation of cross-couplings magnetic saturation transmission line just can be realized.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (6)
1. a cross-couplings magnetic saturation nonlinear transport line structure, is characterized in that comprising coaxial rectangle urceolus, outer cover and coaxial inner core,
Described rectangle urceolus and outer cover are connected to one by screw and are seal cavity in rectangle urceolus, and described coaxial inner core is arranged in rectangle urceolus, and in rectangle urceolus, be filled with transformer oil, and the high voltage breakdown voltage of transformer oil is not less than 40kV,
Described coaxial inner core comprises several metal derby inner core, ceramic dielectric block and conductor rods, and metal derby is distributed in the upper side and lower side of coaxial line symmetrically and evenly, shifts to install on the upside of coaxial line with the metal derby of downside on coaxial vertical line,
Be input to output from coaxial inner core, conductor rods is connected in turn on the upside of coaxial line and between the metal derby of downside, is provided with ceramic dielectric block between the metal derby of on the upside of coaxial line or downside and metal derby,
Described conductor rods appearance cover has insulation lucite tube, and the appearance surface cover of glass tube has FERRITE CORE,
Described metal derby inner core does not contact with the inwall of coaxial rectangle urceolus.
2. a kind of cross-couplings magnetic saturation nonlinear transport line structure according to claim 1, it is characterized in that described urceolus covers and be provided with pore, pore runs through outer cover, and pore is provided with stopple.
3. a kind of cross-couplings magnetic saturation nonlinear transport line structure according to claim 2, is characterized in that the SF6 gas being injected 1 to 2 atmospheric pressure by pore in the coaxial rectangle urceolus of good seal.
4. a kind of cross-couplings magnetic saturation nonlinear transport line structure according to claim 1, is characterized in that described conductor rods, glass tube, FERRITE CORE are cylindrical, and three connects.
5. a kind of cross-couplings magnetic saturation nonlinear transport line structure according to claim 1, it is characterized in that the two sides that described ceramic dielectric block opposes are provided with groove, one end of metal derby inner core is inserted in a groove of a ceramic dielectric.
6. a kind of cross-couplings magnetic saturation nonlinear transport line structure according to claim 1, is characterized in that the full-size of described metal derby inner core and cylindrical conductor bar is less than 1/10th of pattern-band and L-band wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510552820.6A CN105048045B (en) | 2015-09-02 | 2015-09-02 | A kind of cross-couplings magnetic saturation nonlinear transport cable architecture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510552820.6A CN105048045B (en) | 2015-09-02 | 2015-09-02 | A kind of cross-couplings magnetic saturation nonlinear transport cable architecture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105048045A true CN105048045A (en) | 2015-11-11 |
| CN105048045B CN105048045B (en) | 2017-07-28 |
Family
ID=54454402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510552820.6A Active CN105048045B (en) | 2015-09-02 | 2015-09-02 | A kind of cross-couplings magnetic saturation nonlinear transport cable architecture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105048045B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917209A (en) * | 2019-03-29 | 2019-06-21 | 北京环境特性研究所 | Homogeneous material electromagnetic parameter coaxial transmission line measuring device under a kind of hot conditions |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2015
- 2015-09-02 CN CN201510552820.6A patent/CN105048045B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|
| C.R. SPIKINGS等: "HPM systems based on NLTL technologies", 《HIGH POWER RF TECHNOLOGIES, 2009. IET. CONFERENCE ON》 * |
| 廖勇等: "非线性传输线数值模拟方法", 《强激光与粒子束》 * |
| 谢平等: "非线性传输线产生射频脉冲原理研究", 《强激光与例子束》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109917209A (en) * | 2019-03-29 | 2019-06-21 | 北京环境特性研究所 | Homogeneous material electromagnetic parameter coaxial transmission line measuring device under a kind of hot conditions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105048045B (en) | 2017-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106787924B (en) | A kind of long pulsewidth quasi-square wave impulse generator of high voltage | |
| CN204905404U (en) | Cross coupling magnetic saturation nonlinearity transmission line structure | |
| CN107786115B (en) | Compact type pulse high-current device | |
| CN107331497B (en) | Primary discharge cell of fast pulse straight line transformer and preparation method thereof and transformer | |
| CN112165313A (en) | Avalanche transistor-based high-amplitude high-repetition-frequency fast pulse generation circuit | |
| CN203839499U (en) | High power wide spectrum 1/4 wavelength switch oscillator | |
| CN104135250B (en) | A kind of pulse power device based on ring-shaped pottery solidus | |
| CN105048045A (en) | Cross coupling magnetic saturation nonlinear transmission line structure | |
| CN113394533B (en) | Composite ceramic type gyromagnetic nonlinear transmission line | |
| CN105204561A (en) | Short-pulse high-amplitude impulse current generator | |
| US5656873A (en) | Transmission line charging | |
| CN103390787A (en) | High-power microwave testing platform | |
| CN112152592B (en) | High repetition frequency fast pulse generating circuit based on magnetic bead isolation | |
| CN105071787A (en) | Pulse-forming line with reentry structure | |
| CN108631640B (en) | Pulse driving source with variable output pulse width | |
| CN104467724A (en) | Frequency-hopping filter with improved structure | |
| CN204013444U (en) | A kind of pulse power device based on ring-shaped pottery solidus | |
| CN207765337U (en) | A kind of unilateral double capacitance PFN modules of extraction integral packaging | |
| CN104901145A (en) | Continuous-wave terahertz surface wave oscillator | |
| CN206041952U (en) | Compact GW level bipolar pulse produces device | |
| CN102769406B (en) | Annular series loaded line connection structure | |
| Liu et al. | Study of low impedance intense electron-beam accelerator based on magnetic core Tesla transformer | |
| CN108900178B (en) | Composite long pulse forming network | |
| Rangel et al. | The Development of Capacitive Nonlinear Transmission Lines and Its Performance Limits | |
| Li et al. | A high-voltage, long-pulse generator based on magnetic pulse compressor and Blumlein-type rolled strip pulse forming line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |