CN107609233A - A kind of discontinuous field matching method of the general note ripple Interaction Model of travelling-wave tubes - Google Patents
A kind of discontinuous field matching method of the general note ripple Interaction Model of travelling-wave tubes Download PDFInfo
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Abstract
The invention discloses a kind of discontinuous field matching method of the general note ripple Interaction Model of travelling-wave tubes, comprise the following steps：S1, the passive HF field solved in a structural cycle are axially distributedWithTransimission power p1And p2；It is S2, rightWithPhase-retrieval is carried out, is obtainedWithIt is S3, rightCarry out periodic phase continuation and obtain l1The passive HF field of section is axially distributedS4, phase matched is carried out to the field at saltus step section, obtain the field distribution parameter of the Phase Continuation of high frequency field axial component at saltus step section；S5, power and reflection matching are carried out to the field at saltus step section, obtain l2Passive HF field axial direction distributed constant in one structural cycle of section；S6, the parameter obtained to S5 carry out periodic phase continuation and obtain field distributionThe present invention obtains the field distribution in whole interaction region by phase, power and the method for reflection matching and phase continuation so that general note ripple Interaction Theory model can simulate the dominant wave interaction of traveling wave tubes problem of the high-frequency structure with dynamic phase velocity saltus step.
Description
Technical field
The invention belongs to travelling-wave tubes analogue technique, is related to a kind of improvement of dominant wave interaction of traveling wave tubes analogy method, especially
It is related to a kind of discontinuous field matching method of the general note ripple Interaction Model of travelling-wave tubes.
Background technology
Travelling-wave tubes is to apply most electron tubes at present, because its bandwidth, power is high the characteristics of, be widely used in defending
The fields such as star communication, electronic countermeasure.CAD (CAD) technology have the advantages that it is quick, cost-effective, it is now, micro-
Wave duct CAD software has become an important tool of travelling-wave tubes design and optimization.Dominant wave interaction of traveling wave tubes process is traveling wave
The core of pipe work, how it to be one of Microwave Tube CAD Technology important by the method accurate simulation interaction process of numerical value
Study neighborhood.
At present, the software for simulating note ripple interaction in travelling-wave tubes is broadly divided into two classes, first, using particle simulation method
Large scale business electromagnetic simulation software, the wide precision of its applicability is high but the calculating time is oversize.Second, microwave tube research unit independently opens
The special-purpose software of hair, it is based on parameter theory model, and calculating speed is very fast, but needs to establish for different travelling-wave tubes casts
Different note ripple interaction parameter theoretical models, for some new travelling-wave tubes such as Terahertz travelling-wave tubes, banding traveling wave,
It is difficult to establish effective note ripple interaction parameter theoretical model.
Application No. CN201110236508.8 patent of invention provides a kind of simulation side of dominant wave interaction of traveling wave tubes
Method.Its maximum advantage is the travelling-wave tubes for different casts, such as helix TWT, coupled-cavity TWT, folded waveguide
Travelling-wave tubes etc., its theoretical model have versatility.Passive HF field is axially distributed in whole interaction region in the theoretical model
Acquisition, be that the number in one axial-periodic of travelling-wave tubes high-frequency structure is obtained by 3 D electromagnetic field simulation software or experiment test
It is worth high frequency field distribution, recycles Fo Luokui theorems that the high frequency field distribution is carried out what periodic extension obtained.This inevitable requirement traveling wave
It must be equally distributed to manage whole high-frequency structure.But in order to lift the interaction efficiency of electronics, practical travelling-wave tubes is being set
The method that timing would generally introduce phase velocity gradual change and phase velocity saltus step, this causes the whole high-frequency structure of travelling-wave tubes to be no longer uniformly distributed
, general theoretical model can not simulate the travelling-wave tubes of these high-frequency structure non-uniform Distributions.
The content of the invention
Gone it is an object of the invention to overcome the deficiencies of the prior art and provide one kind using three-D high frequency simulation softward
The monocyclic numerical field of wave duct high frequency, then obtained entirely mutually by phase, power and the method for reflection matching and phase continuation
The field distribution of the zone of action so that the general note ripple Interaction Theory model after improvement can be simulated with dynamic phase velocity saltus step
The dominant wave interaction of traveling wave tubes problem of high-frequency structure.
The purpose of the present invention is achieved through the following technical solutions：A kind of general note ripple Interaction Model of travelling-wave tubes
Discontinuous field matching method, comprises the following steps：
S1, the folded waveguide before dominant wave interaction of traveling wave tubes high-frequency structure saltus step is designated as l1Section, its structural cycle length
It is designated as L1；Folded waveguide after saltus step is designated as l2Section, its structural cycle length are designated as L2；Using three-D high frequency simulation softward to l1
Section and l2Section is respectively with L1And L2Calculating is scanned for parameter, obtains l1Section and l2It is passive in a structural cycle corresponding to section
High frequency field is axially distributedWithAnd l1Section and l2Transimission power p corresponding to section1And p2；
It is S2, rightWithPhase-retrieval is carried out respectively, is obtained the passive HF field that initial phase is zero and is axially distributedWith
S3, utilize Fu Luokui theorems pairCarry out periodic phase continuation and obtain whole l1The passive HF field of section is axially divided
ClothAnd record (i.e. l at saltus step section1Section end) the axially distribution of passive HF fieldField phase value；
S4, the passive HF field at saltus step section is axially distributedPhase matched is carried out, obtains the nothing at saltus step section
The passive HF field axial direction distributed constant for the Phase Continuation that source high frequency field is axially distributed；
S5, to the passive HF field at saltus step section, axially distribution carries out power and reflection matches, the l after being matched2
Passive HF field axial direction distributed constant corresponding to section in a structural cycle；
S6, the passive HF field axial direction distributed constant obtained using Fu Luokui theorems to step S5 are carried out periodic phase and prolonged
Open up to obtain whole l2The passive HF field axial direction distributed constant of section
Further, in the step S2Wherein,Axially divide for passive HF field
ClothInitial phase value,Axially it is distributed for passive HF fieldInitial phase value.
Further, the step S4 concrete methods of realizing is：Step S2 is obtainedIt is multiplied by a phase factorObtainWherein,For l1The passive HF field of end is axially distributedAxial component phase value.
Further, the step S5 concrete methods of realizing is：Axially distribution is joined for the passive HF field that step S4 is obtained
NumberIt is multiplied by a power factorWherein, p1For l1The transimission power of section；p2For l2The transimission power of section；For reflectance factor,ForConjugate complex number, reflectance factor be used for match l1And l2At two sections of contact surfaces due to
The power loss that back wave caused by structure saltus step is brought.
The beneficial effects of the invention are as follows：It is non-that the present invention by a kind of discontinuous field matching method can obtain whole travelling-wave tubes
The passive HF field of uniform high-frequency structure is axially distributed：The monocyclic number of travelling-wave tubes high frequency is obtained using three-D high frequency simulation softward
It is worth field, then the field distribution in whole interaction region is obtained by phase, power and the method for reflection matching and phase continuation.Profit
Improved with the matching process of the present invention entering general theoretical model so that the general theoretical model after improvement can simulate
Note ripple interaction process in the travelling-wave tubes of high-frequency structure non-uniform Distribution, and the high efficiency with parameter theory model, make
The dominant wave interaction of traveling wave tubes of the high-frequency structure with dynamic phase velocity saltus step can be simulated by obtaining general note ripple Interaction Theory model
Problem, considerably increase the practicality of the model.
Brief description of the drawings
Fig. 1 is the discontinuous field matching method flow chart of the present invention；
Fig. 2 is that the first paragraph of the V-band folded waveguide travelling-wave tubes of the embodiment of the present invention and second segment high-frequency structure model show
It is intended to；
Fig. 3 is that monocyclic passive HF field is axially divided corresponding to V-band folded waveguide travelling-wave tubes first paragraph and second segment
Butut；
Fig. 4 is the interaction high-frequency structure distribution map of the present embodiment V-band folded waveguide travelling-wave tubes；
Fig. 5 is that the present embodiment is distributed signal using this method solution V-band folded waveguide travelling-wave tubes 58GHz power along axle
Figure.
Embodiment
Below in conjunction with the accompanying drawings technical scheme is further illustrated with specific embodiment.
As shown in figure 1, a kind of discontinuous field matching method of the general note ripple Interaction Model of travelling-wave tubes, including following step
Suddenly：
S1, the folded waveguide before dominant wave interaction of traveling wave tubes high-frequency structure saltus step is designated as l1Section, its structural cycle length
It is designated as L1；Folded waveguide after saltus step is designated as l2Section, its structural cycle length are designated as L2；Utilize three-D high frequency simulation softward HFCS
To l1Section and l2Section is respectively with L1And L2Calculating is scanned for parameter, it is 20, angular grid that the present embodiment, which sets radial grid number,
Number is 20, axial grid number is 50；Obtain l1Section and l2Passive HF field corresponding to section in a structural cycle is axially distributed
WithAnd l1Section and l2Transimission power p corresponding to section1And p2；
It is S2, rightWithPhase-retrieval is carried out respectively, is obtained the passive HF field that initial phase is zero and is axially distributedWith Wherein,Axially it is distributed for passive HF fieldInitial phase value,To be passive
High frequency field is axially distributedInitial phase value；
S3, utilize Fu Luokui theorems pairCarry out periodic phase continuation and obtain whole l1The passive HF field of section is axially divided
ClothAnd record (i.e. l at saltus step section1Section end) the axially distribution of passive HF fieldField phase value；
S4, the passive HF field at saltus step section is axially distributedPhase matched is carried out, obtains the nothing at saltus step section
The passive HF field axial direction distributed constant for the Phase Continuation that source high frequency field is axially distributed；Concrete methods of realizing is：Step S2 is obtained
ArriveIt is multiplied by a phase factorObtainWherein,For l1The passive HF field of end is axially distributedAxial component phase value.
S5, to the passive HF field at saltus step section, axially distribution carries out power and reflection matches, the l after being matched2
Passive HF field axial direction distributed constant corresponding to section in a structural cycle；Concrete methods of realizing is：Step S4 is obtained
Passive HF field axial direction distributed constantIt is multiplied by a power factorWherein, p1For l1The transimission power of section；p2
For l2The transimission power of section；For reflectance factor,ForConjugate complex number, reflectance factor be used for match l1With
l2The power loss that back wave is brought caused by structure saltus step at two sections of contact surfaces.
S6, the passive HF field axial direction distributed constant obtained using Fu Luokui theorems to step S5 are carried out periodic phase and prolonged
Open up to obtain whole l2The passive HF field axial direction distributed constant of section
By above-mentioned steps S1~S6 operation, l has been obtained1And l2The passive HF field axial direction distributed constant of sectionWith
Complete the matching of the discontinuous field of the general note ripple Interaction Model of wave duct.Then only need byWithSubstitute into high frequency field equation, knot
The phase equation and the equation of motion of particle are closed, note ripple interaction is completed according to the calculation procedure of general note ripple Interaction Theory model
Simulation.General note ripple Interaction Theory model and calculation procedure are customary technical means in the art, and here is omitted.
Carry out the technology to the present invention so that frequency range is 58GHz-62GHz V-band folded waveguide travelling-wave tubes as an example below
Scheme is described in further detail.But it should be noted that the V-band that the present invention is not restricted to 58GHz-62GHz folds
Waveguide travelling-wave tubes, but a kind of matching process of the discontinuous field of general travelling-wave tubes, helix TWT and coupled-cavity TWT
Also handled by step of the present invention.
Fig. 2 is the first paragraph high-frequency structure l of V-band folded waveguide travelling-wave tubes1With second segment high-frequency structure l2Model signal
Figure, wherein the structural cycle L of first paragraph1For 1.74mm, the structural cycle L of second segment1For 1.76mm.Fig. 3 is that the V-band folds
Waveguide travelling-wave tubes l1And l2Corresponding monocyclic passive HF field axial direction distribution map.Fig. 4 is the V-band folded waveguide travelling-wave tubes
Interaction high-frequency structure distribution map.Fig. 5 is to solve V-band folded waveguide travelling-wave tubes 58GHz using the method for the present invention
Power is along axle distribution schematic diagram.It can be seen that higher power output can be obtained using the method for the present invention, very well
Ground solves the problems, such as the dominant wave interaction of traveling wave tubes of the high-frequency structure with dynamic phase velocity saltus step.
One of ordinary skill in the art will be appreciated that embodiment described here is to aid in reader and understands this hair
Bright principle, it should be understood that protection scope of the present invention is not limited to such especially statement and embodiment.This area
Those of ordinary skill can make according to these technical inspirations disclosed by the invention various does not depart from the other each of essence of the invention
The specific deformation of kind and combination, these deform and combined still within the scope of the present invention.
Claims (4)
1. a kind of discontinuous field matching method of the general note ripple Interaction Model of travelling-wave tubes, it is characterised in that comprise the following steps：
S1, the folded waveguide before dominant wave interaction of traveling wave tubes high-frequency structure saltus step is designated as l1Section, its structural cycle length are designated as
L1；Folded waveguide after saltus step is designated as l2Section, its structural cycle length are designated as L2；Using three-D high frequency simulation softward to l1Section and l2
Section is respectively with L1And L2Calculating is scanned for parameter, obtains l1Section and l2Passive HF corresponding to section in a structural cycle
Field axially distributionWithAnd l1Section and l2Transimission power p corresponding to section1And p2；
It is S2, rightWithPhase-retrieval is carried out respectively, is obtained the passive HF field that initial phase is zero and is axially distributedWith
S3, utilize Fu Luokui theorems pairCarry out periodic phase continuation and obtain whole l1The passive HF field of section is axially distributedAnd record passive HF field at saltus step section and be axially distributedField phase value；
S4, the passive HF field at saltus step section is axially distributedPhase matched is carried out, obtains the passive height at saltus step section
The passive HF field axial direction distributed constant for the Phase Continuation that frequency field is axially distributed；
S5, to the passive HF field at saltus step section, axially distribution carries out power and reflection matches, the l after being matched2Section is corresponding
A structural cycle in passive HF field axial direction distributed constant；
S6, the passive HF field axial direction distributed constant obtained using Fu Luokui theorems to step S5 are carried out periodic phase continuation and obtained
To whole l2The passive HF field axial direction distributed constant of section
2. a kind of discontinuous field matching method of the general note ripple Interaction Model of travelling-wave tubes according to claim 1, it is special
Sign is, in the step S2Wherein,Axially it is distributed for passive HF fieldIt is initial
Phase value,Axially it is distributed for passive HF fieldInitial phase value.
3. a kind of discontinuous field matching method of the general note ripple Interaction Model of travelling-wave tubes according to claim 2, it is special
Sign is that the step S4 concrete methods of realizing is：Step S2 is obtainedIt is multiplied by a phase factorObtainWherein,For l1The passive HF field of end is axially distributedAxial component phase value.
4. a kind of discontinuous field matching method of the general note ripple Interaction Model of travelling-wave tubes according to claim 3, it is special
Sign is that the step S5 concrete methods of realizing is：The passive HF field axial direction distributed constant that step S4 is obtained
It is multiplied by a power factorWherein, p1For l1The transimission power of section；p2For l2The transimission power of section；For
Reflectance factor,ForConjugate complex number, reflectance factor be used for match l1And l2Because structure saltus step causes at two sections of contact surfaces
The power loss brought of back wave.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109033686A (en) * | 2018-08-14 | 2018-12-18 | 电子科技大学 | A kind of travelling-wave tubes backward wave oscillation analogy method |
| CN110046370A (en) * | 2018-12-17 | 2019-07-23 | 上海航天电子有限公司 | A method of folded waveguide structure characteristic impedance is solved using numerical field |
| CN111414704A (en) * | 2020-03-28 | 2020-07-14 | 电子科技大学 | Design method of focusing magnetic field for inhibiting dynamic defocusing of high-efficiency traveling wave tube |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090096378A1 (en) * | 2007-10-12 | 2009-04-16 | Barnett Larry R | Traveling-Wave Tube 2D Slow Wave Circuit |
| CN102298658A (en) * | 2011-08-17 | 2011-12-28 | 电子科技大学 | Method for simulating dominant wave interaction of traveling wave tubes |
| CN102592924A (en) * | 2012-02-29 | 2012-07-18 | 安徽华东光电技术研究所 | Slow-wave system for Ka-band travelling wave tube and manufacturing method for slow-wave system |
| CN103311076A (en) * | 2013-05-08 | 2013-09-18 | 电子科技大学 | Traveling-wave regenerative-feedback oscillation system |
| CN103942389A (en) * | 2014-04-18 | 2014-07-23 | 电子科技大学 | Optimization method of traveling-wave tube beam wave interaction distribution structure |
| CN204885078U (en) * | 2015-08-07 | 2015-12-16 | 南京三乐电子信息产业集团有限公司 | Slow wave structure who restraines helix TWT harmonic |
-
2017
- 2017-08-25 CN CN201710741159.2A patent/CN107609233B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090096378A1 (en) * | 2007-10-12 | 2009-04-16 | Barnett Larry R | Traveling-Wave Tube 2D Slow Wave Circuit |
| CN102298658A (en) * | 2011-08-17 | 2011-12-28 | 电子科技大学 | Method for simulating dominant wave interaction of traveling wave tubes |
| CN102592924A (en) * | 2012-02-29 | 2012-07-18 | 安徽华东光电技术研究所 | Slow-wave system for Ka-band travelling wave tube and manufacturing method for slow-wave system |
| CN103311076A (en) * | 2013-05-08 | 2013-09-18 | 电子科技大学 | Traveling-wave regenerative-feedback oscillation system |
| CN103942389A (en) * | 2014-04-18 | 2014-07-23 | 电子科技大学 | Optimization method of traveling-wave tube beam wave interaction distribution structure |
| CN204885078U (en) * | 2015-08-07 | 2015-12-16 | 南京三乐电子信息产业集团有限公司 | Slow wave structure who restraines helix TWT harmonic |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109033686A (en) * | 2018-08-14 | 2018-12-18 | 电子科技大学 | A kind of travelling-wave tubes backward wave oscillation analogy method |
| CN109033686B (en) * | 2018-08-14 | 2022-07-29 | 电子科技大学 | Traveling wave tube backward wave oscillation simulation method |
| CN110046370A (en) * | 2018-12-17 | 2019-07-23 | 上海航天电子有限公司 | A method of folded waveguide structure characteristic impedance is solved using numerical field |
| CN111414704A (en) * | 2020-03-28 | 2020-07-14 | 电子科技大学 | Design method of focusing magnetic field for inhibiting dynamic defocusing of high-efficiency traveling wave tube |
| CN111414704B (en) * | 2020-03-28 | 2023-03-03 | 电子科技大学 | Design method of focusing magnetic field for inhibiting dynamic defocusing of high-efficiency traveling wave tube |
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