CN108807117A - A kind of double note double frequency relativistic magnetrons of L-band - Google Patents
A kind of double note double frequency relativistic magnetrons of L-band Download PDFInfo
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- CN108807117A CN108807117A CN201810506371.5A CN201810506371A CN108807117A CN 108807117 A CN108807117 A CN 108807117A CN 201810506371 A CN201810506371 A CN 201810506371A CN 108807117 A CN108807117 A CN 108807117A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/50—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field
- H01J25/52—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode
- H01J25/58—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode having a number of resonators; having a composite resonator, e.g. a helix
- H01J25/587—Multi-cavity magnetrons
- H01J25/593—Rising-sun magnetrons
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Abstract
The invention discloses a kind of double note double frequency relativistic magnetrons of L-band, belong to the microwave source technical field in High-Power Microwave technology.The magnetron includes two radio frequency systems being axially connected to, and two radio frequency systems are all made of single port and radially export.Magnetron of the present invention meets and the matched requirement of Low ESR high power driving source, reduces the geometric dimension of pulse-forming line, makes entire High Power Microwave System miniaturization, densification.Meanwhile it being based on Low ESR high power driving source, axial coaxially connected single radio frequency system remains to work under high impedance condition, and the electronic efficiency of single radio frequency system is avoided to be affected because the geometric dimension of pulse-forming line reduces.
Description
Technical field
The invention belongs to the microwave source technical fields in High-Power Microwave technology, and in particular to a kind of double note double frequencies of L-band
Relativistic magnetron is based on axial segmentation formula high-frequency structure, radiates the High-Power Microwave of two row different frequencies.
Background technology
From practical High Power Microwave System angle, the development of High Power Microwave System is concentrated mainly on four sides
Face：(1) miniaturization of system and densification improve power dissipation ratio；(2) high repetition frequency works；(3) frequency-tunable；(4) multifrequency
Output.Relativistic magnetron has had been a concern since birth, and makes a plan and study it, and the incipient stage is main
It concentrates on improving the research of single relativistic magnetron output characteristics, including obtains peak-peak, average power as far as possible, with
And improve efficiency.
Recent years, University of Michigan proposed a kind of new planar magnetron.Based on transversal sectional formula high-frequency structure, two
A pattern works at the same time, and exports the High-Power Microwave of different frequency.It is reported that in external working voltage 300kV or so, axial magnetic
Under the conditions of 0.14~0.23T of field, planar magnetron exports the microwave that two row frequencies are respectively 1GHz and 2GHz, corresponding maximum peak
Value power is 32MW and 13MW.It is worth noting that multifrequency High-Power Microwave is due to the bat wave effect to acting on target, Neng Gouyou
Effect reduces the shortcomings that injuring threshold value and expansion effect targeted species, overcoming current Narrow-band HPW damage effect.
Relativistic magnetron works under high impedance condition is conducive to electronics and electromagnetic field of high frequency interaction, is to solve relatively
By an approach of magnetron poor efficiency, but it is high impedance to require matching high power driving source.It is well known that high impedance
Driving source usually selects the insulation that transformer oil is pulse-forming line and energy-accumulating medium, exactly pulse-forming line geometric dimension larger
Reason.Large-sized pulse-forming line has increased considerably the volume of entire High Power Microwave System, is unfavorable for the small-sized of system
Change and densification.Currently, with the development of pulse power source technology, it is used as pulse form by choosing the larger medium of dielectric constant
Insulation at line and energy-accumulating medium reduce the geometric dimension of pulse-forming line, but its impedance reduces, with high impedance the theory of relativity
Magnetron mismatches.Based on theory analysis and experimental result, relativistic magnetron is under the conditions of high impedance (~100 Ω) than low
When impedance (20~50 Ω), electron stream and transducing during high-frequency electric field interaction be more abundant and the height of two row different frequencies
The bat wave damage effects higher that power waves form target.Therefore, the present invention proposes a kind of double note double frequency the theory of relativity magnetic of L-band
Keyholed back plate, the i.e. relativistic magnetron of axial segmentation formula high-frequency structure give off the High-Power Microwave of two row different frequencies.
Invention content
The present invention proposes a kind of double note double frequency relativistic magnetrons of L-band.Its structure meets drives with Low ESR high power
The dynamic matched requirement in source, reduces the geometric dimension of pulse-forming line, makes entire High Power Microwave System miniaturization, densification.Together
When, it is based on Low ESR high power driving source, axial coaxially connected single radio frequency system remains to work under high impedance condition, keep away
The electronic efficiency for exempting from single radio frequency system is affected because the geometric dimension of pulse-forming line reduces.
The technical solution adopted by the present invention is that：A kind of double note double frequency relativistic magnetrons of L-band, it is characterised in that：The magnetic
Keyholed back plate includes two radio frequency systems being axially connected to.Described two radio frequency systems include anode outer sleeve, in outer sleeve along circle
The interaction region of all equally distributed vane type resonators and interaction region, described two radio frequency systems is connected by a cylinder
Road connection is connected, and two interaction regions are respectively arranged with a cathode connected by cathode branch strut；Described two high frequency systems
System is using radial output.
Further, described two radio frequency systems are all made of one of vane type resonator and are connected by the radial changeover portion that exports
It connects output rectangular waveguide and carries out microwave output.
Further, the interface channel inside radius is identical as interaction region radius.
Magnetron oscillator belongs to a kind of crossed-field device, and under orthogonal DC electric fields and magnetic fields, electronics is along EDC×B0
Wheel pendular motion is done in direction, when its drift velocity and high-frequency electric field phase velocity meet synchronous condition, with Physical Mechanism ERFJ is exchanged each other
Energy.Relativistic magnetron generates radiant power under large driven current density and is higher than two orders of magnitude of non-relativistic device or more, defeated
Go out peak power and reaches GW levels.In the case of high current, influence of the self-magnetic field caused by space charge to note wave interaction
It cannot ignore, especially in axial segmentation formula high-frequency structure proposed by the present invention, note the influence of self-magnetic field during wave interaction
It is larger, by adjusting the axially spaced-apart of two radio frequency systems, the mutual influence of the self-magnetic field of space charge formation can be reduced.
Present invention has the advantages that：(1) relativistic magnetron of axial segmentation formula high-frequency structure can meet single high frequency
System works under high impedance condition, while can meet again and the matched requirement of Low ESR high power driving source, reduction pulse
The geometric dimension for forming line makes entire High Power Microwave System miniaturization, densification；(2) transverse direction proposed with University of Michigan
The relativistic magnetron of segmented high-frequency structure compares, and two-beam electronics note is independent in axial segmentation formula high-frequency structure participates in interaction
With, do not require the phase velocity of two operating modes identical, not only contribute to note wave interaction, and export two row High-Power Microwaves
Frequency interval adjustable range bigger；(3) High-Power Microwave of the two row different frequencies exported causes bat wave to ruin target of attack
Hinder effect, than single Narrow-band HPW to the damage effects higher of target, effective damage targeted species are more.
Description of the drawings
Fig. 1 is the resonance array schematic diagram for the transversal sectional formula high-frequency structure that University of Michigan proposes；
Fig. 2 is the relativistic magnetron schematic diagram of axial segmentation formula high-frequency structure proposed by the present invention；
Fig. 3 is that the present embodiment provides a kind of outputs of the double note double frequency relativistic magnetrons of L-band as a result, Fig. 3 (a) and (b)
For time-domain signal and its fft analysis that port 4 exports, Fig. 3 (c) and time-domain signal and its fft analysis that (d) is the output of port 5.
Drawing reference numeral explanation：1 anode outer sleeve, 2 vane type resonators, 3 interaction regions, 4 cathodes, 5 output changeover portions, 6 is defeated
Go out rectangular waveguide BJ14,7 cathode branch struts.
Specific implementation mode
Fig. 1 be Univ Michigan-Ann Arbor USA propose transversal sectional formula high-frequency structure resonance array (Fig. 1 (a) is front elevation,
Fig. 1 (b) is oblique view).It is reported that in operating voltage 300kV, under the conditions of 0.14~0.23T of magnetic field, two-port output is maximum
Peak power is respectively 32MW and 13MW, and corresponding frequency is 1GHz and 2GHz.
Fig. 2 be axial segmentation formula high-frequency structure proposed by the present invention relativistic magnetron (Fig. 2 (a) is sectional view, Fig. 2
(b) it is overall structure diagram).The magnetron includes two radio frequency systems being axially connected to, and two radio frequency systems include sun
Pole outer sleeve, circumferentially equally distributed vane type resonator and interaction region, the interaction region of two radio frequency systems pass through one
Cylindrical interface channel connection, and two interaction regions are respectively arranged with a cathode connected by cathode branch strut.Described two
A radio frequency system is exported using radial, i.e., one of two radio frequency systems vane type resonator is connected by the radial changeover portion that exports
It connects output rectangular waveguide and carries out microwave output.The interface channel inside radius is identical as interaction region radius.
The geometric parameter of A6 relativistic magnetrons is in this example：Cathode radius rc=12.7mm, anode radius ra=
31.8mm, anode outer radius rb=82.6mm, angle, θ=20 ° of vane type resonator, rectangular waveguide narrow side width a=82mm, diameter
To output changeover portion and rectangular waveguide junction coupling aperture narrow side distance b=48mm, the radial length c=for exporting changeover portion
55mm, the height L=160mm, two sets of radio frequency system axially spaced-apart d=60mm of radio frequency system.Two sets of radio frequency systems are taken single-ended
Bore is to export structure.
Fig. 3 indicates the time domain microwave signal of the double note double frequency relativistic magnetron simulating, verifyings outputs of L-band and its corresponding
Fft analysis.Wherein Fig. 3 (a) and (b) indicate the time domain microwave signal and its fft analysis that output port 6 exports；Fig. 3 (c) and (d)
Indicate the time domain microwave signal and its fft analysis of the output of another output port 6.PIC is emulated in operating voltage 750kV, magnetic
Under the conditions of the 0.33T of field, port 6 exports peak power and reaches 500MW, frequency 1.25GHz；Another port 6 exports peak power
Reach 800MW, frequency 1.48GHz.The impedance for being computed the relativistic magnetron of axial segmentation formula high-frequency structure drops to about 30
Ω is conducive to match with Low ESR driving source.Therefore, the double note double frequencies of axial segmentation formula high-frequency structure L-band proposed by the present invention
Relativistic magnetron has important research and application value.
Claims (4)
1. a kind of double note double frequency relativistic magnetrons of L-band, it is characterised in that：The magnetron includes two high frequencies being axially connected to
System.
2. the double note double frequency relativistic magnetrons of a kind of L-band as described in claim 1, it is characterised in that：Described two high frequencies
System includes anode outer sleeve, circumferentially equally distributed vane type resonator and interaction region in outer sleeve, described two
The interaction region of radio frequency system is by a cylindrical interface channel connection, and two interaction regions are respectively arranged with one and pass through cathode
The cathode of supporting rod connection；Described two radio frequency systems are exported using radial.
3. the double note double frequency relativistic magnetrons of a kind of L-band as claimed in claim 2, it is characterised in that：Described two high frequencies
System is all made of a vane type resonator and carries out microwave output by the radial changeover portion connection output rectangular waveguide that exports.
4. the double note double frequency relativistic magnetrons of a kind of L-band as claimed in claim 2, it is characterised in that：The interface channel
Inside radius is identical as interaction region radius.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810506371.5A CN108807117A (en) | 2018-05-23 | 2018-05-23 | A kind of double note double frequency relativistic magnetrons of L-band |
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| CN201810506371.5A CN108807117A (en) | 2018-05-23 | 2018-05-23 | A kind of double note double frequency relativistic magnetrons of L-band |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534386A (en) * | 2019-09-05 | 2019-12-03 | 电子科技大学 | A kind of axial direction double structure double frequency output magnetron for microwave oven |
| CN114446740A (en) * | 2021-11-18 | 2022-05-06 | 电子科技大学 | Modular frequency and phase locking structure, frequency and phase locking circuit system and monitoring system thereof |
| CN114446741A (en) * | 2021-11-18 | 2022-05-06 | 电子科技大学 | Array module magnetron and novel high-power magnetron unit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4938066B1 (en) * | 1968-11-25 | 1974-10-15 | ||
| JPH10302655A (en) * | 1997-04-23 | 1998-11-13 | Mitsubishi Electric Corp | Coaxial magnetron |
| JP2000003676A (en) * | 1998-06-12 | 2000-01-07 | Toshiba Corp | Variable oscillating frequency type magnetron |
| CN104183445A (en) * | 2014-09-05 | 2014-12-03 | 中国人民解放军国防科学技术大学 | Compact relativistic magnetron with TE10 output mode |
| CN104465276A (en) * | 2014-12-08 | 2015-03-25 | 中国人民解放军国防科学技术大学 | Compact relativistic magnetron with axially output TE11 mode |
| CN105428191A (en) * | 2015-12-21 | 2016-03-23 | 电子科技大学 | Relativistic magnetron for realizing frequency hopping operation by utilizing transparent negative electrode |
| US20170169982A1 (en) * | 2015-12-10 | 2017-06-15 | Raytheon Company | Axial strapping of a multi-core (cascaded) magnetron |
-
2018
- 2018-05-23 CN CN201810506371.5A patent/CN108807117A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4938066B1 (en) * | 1968-11-25 | 1974-10-15 | ||
| JPH10302655A (en) * | 1997-04-23 | 1998-11-13 | Mitsubishi Electric Corp | Coaxial magnetron |
| JP2000003676A (en) * | 1998-06-12 | 2000-01-07 | Toshiba Corp | Variable oscillating frequency type magnetron |
| CN104183445A (en) * | 2014-09-05 | 2014-12-03 | 中国人民解放军国防科学技术大学 | Compact relativistic magnetron with TE10 output mode |
| CN104465276A (en) * | 2014-12-08 | 2015-03-25 | 中国人民解放军国防科学技术大学 | Compact relativistic magnetron with axially output TE11 mode |
| US20170169982A1 (en) * | 2015-12-10 | 2017-06-15 | Raytheon Company | Axial strapping of a multi-core (cascaded) magnetron |
| CN105428191A (en) * | 2015-12-21 | 2016-03-23 | 电子科技大学 | Relativistic magnetron for realizing frequency hopping operation by utilizing transparent negative electrode |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534386A (en) * | 2019-09-05 | 2019-12-03 | 电子科技大学 | A kind of axial direction double structure double frequency output magnetron for microwave oven |
| CN114446740A (en) * | 2021-11-18 | 2022-05-06 | 电子科技大学 | Modular frequency and phase locking structure, frequency and phase locking circuit system and monitoring system thereof |
| CN114446741A (en) * | 2021-11-18 | 2022-05-06 | 电子科技大学 | Array module magnetron and novel high-power magnetron unit |
| CN114446741B (en) * | 2021-11-18 | 2023-04-07 | 电子科技大学 | Array module magnetron and novel high-power magnetron unit |
| CN114446740B (en) * | 2021-11-18 | 2023-04-14 | 电子科技大学 | Modular frequency-locking phase-locking structure, frequency-locking phase-locking circuit system and monitoring system thereof |
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Application publication date: 20181113 |
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