CN105609902A - Reflection-type phase shifter, accelerator and operation method of reflection-type phase shifter - Google Patents
Reflection-type phase shifter, accelerator and operation method of reflection-type phase shifter Download PDFInfo
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- CN105609902A CN105609902A CN201510998048.0A CN201510998048A CN105609902A CN 105609902 A CN105609902 A CN 105609902A CN 201510998048 A CN201510998048 A CN 201510998048A CN 105609902 A CN105609902 A CN 105609902A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
- H01P1/182—Waveguide phase-shifters
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
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Abstract
The invention relates to a phase shifter, an operation method of the phase shifter and an accelerator. The phase shifter comprises a first part (1) and a second part (2), wherein the first part (1) is provided with a first hollow cavity (5), the second part (2) is arranged in the first hollow cavity (5), the phase shifter is configured in a way that microwave can be reflected back inside the phase shifter, a first port of the first hollow cavity serves as an inlet and an outlet of the phase shifter, and the distance between the inner wall of the hollow cavity (5) and the second part (2) is periodically and continuously changed in a circumferential direction so that the a phase shift is generated between adjacent microwave pulses at the outlet of the phase shifter when the first part (1) and the second part (2) rotates relatively to each other. The mechanical phase shifter is simple in structure and relatively high in controllability, the phase shift range can be controlled by changing a structural parameter of a part, and the phase shift speed can be controlled by changing a rotational speed.
Description
Technical field
The present invention relates to microwave conduction technique field and accelerator field, relate in particular to reflection-type and movePhase device and accelerator and method of operating thereof.
Background technology
Phase shifter is one of very important microwave device in microwave applications, radar, accelerator,In communication and instrument field, there is application very widely. Current phase shifter is all at knotIn structure, insert dieelctric sheet, pin or ferrite etc. to realize the change of guided wave coefficient, and then canChange the lower phase place of microwave.
Phase shifter is a kind of a kind of phase shifter that can change microwave phase, at High-Power MicrowaveSynthetic and distribute in have unique application. Phase place pace of change is faster, system works repetition rateJust can be higher. High power phase shifter possesses some special knowledge abroad, in some prior aries,By place ferrite or the ferroelectric of certain physical dimension in waveguide, by peripheral high pressureExternal circuit changes ferrite or ferroelectric material parameter and then change phase shift. These phase shiftersThe external circuit requirement of design higher, and if realize phase shift fast, additional arteries and veinsRush voltage and conventionally want several kilovolts, paired pulses rising edge requires also very high simultaneously. In addition, these moveIn phase device in order to allow microwave have good transmission characteristic conventionally will add some other Jie in structureMatter, so make design comparison complexity.
Common phase shifter is all dual-port microwave component, and microwave enters from a port, from separatelyA port spreads out of. The change of phase place by adding the realization such as diaphragm, ferrite in span line.But, this phase shifter that changes Ferrite Material parameter by external circuit of the prior artThere is following defect:
(1) phase shift is limited: the design providing in document at present, although can be shorterIn time, realize the quick variation of phase place, but the excursion of phase place is very little, can not reachesThe variation of 180 ° of phase places;
(2) poor stability: phase shifter adopts the method for external circuit control now, by changingThe electrical quantity of material or magnetic parameter are realized the change of microwave phase, this external circuit voltageStability requirement is higher, and current design is that in measurement result, to intercept effect relatively good mostlyOne section as design result;
(3) materials limitations: current existing phase shifter need to be at the inner iron oxygen that increases of phase shifterBody material or other material, increased design difficulty;
(4) restriction of external circuit: change the parameter of material and then change phase place by external circuitSize, the voltage of external circuit is wanted several kilovolts conventionally, high voltage difficulty in the time of application is larger.
For scheme of the prior art, from the experimental result of document, single phase shifter does not also haveHave the variation that realizes 180 °, main cause is that the transmission of microwave is restricted, and microwave is passing throughWhen phase shifter, power can decrease, and also have part microwave and be reflected simultaneously, andWill ensure to reflect little based on ferritic phase shifter, loss is little, but also wants speed fast, theseIt is all the factor of restriction.
Summary of the invention
The object of the invention is to propose reflection-type phase shifter and accelerator and control method thereof, canComparatively be conveniently implemented between the adjacent microwave pulse in exit of phase shifter and there is a phaseMove.
For achieving the above object, the invention provides a kind of reflection-type phase shifter, comprise first componentAnd second component, described first component has the first cavity, and described second component is located at describedIn one cavity, described phase shifter is configured to microwave and can be reflected back toward therein, and describedThe first port of one cavity is as its entrance and exit;
Distance between the inwall of described cavity and the outer wall of second component is periodicity on circumferentiallyChange continuously, make in the time relatively rotating between described first component and described second component,Between the adjacent microwave pulse in the exit of described phase shifter, there is a phase shift.
Further, between the inwall of described the first cavity and the outer wall of described second componentDistance in week upwards taking 180 ° for cycle continuity variation.
Further, described phase shift is in the scope of 0 ° to 180 °.
Further, the cylinder of described second component is located in described the first cavity, and described firstThe cross section of one in cavity and described cylinder is circular and is static, described the first cavityWith distance between another cross section and its pivot in described cylinder was upwards in weekChange periodically continuously.
Further, described another the cross section in described the first cavity and described cylinder isEllipse, rectangle, equilateral triangle or regular polygon.
Further, described first component is also provided with the second cavity, described the second cavity with described inThe first end of the first cavity is communicated with, and described the second cavity has near first of described the first portGuide portion, for guiding described microwave to enter in described the first cavity.
Further, described the first guide portion comprises square wave guide and the first gradual change portion, described square waveLead the cavity being square for cross section, described square wave guide is by described the first gradual change portion and described firstCavity is communicated with.
Further, described second component comprises the second guide portion, and described the second guide portion is contiguousIn described the first port, for described microwave being guided to described the first cavity and described secondSpace between part.
Further, described the second guide portion comprises cylindrical portion and the second gradual change portion, described cylinderPortion is connected with the described cylinder of described second component by described the second gradual change portion.
Further, also comprise the circulator that is located at described the first port, for separating of what enterDescribed microwave and the described microwave reflecting.
Further, also comprise choke structure, described choke structure be located at described first component withBetween described second component and the position of the second port of contiguous described the first cavity, for to enteringThe described microwave entering reflects.
In addition, the present invention also provides a kind of acceleration that comprises the electronics for accelerating acceleratorPipe, above-mentioned reflection-type phase shifter and drive unit, described drive unit is used for making described firstParts and described second component relatively rotate.
Further, described accelerator comprises the first accelerating tube and the second accelerating tube, described firstAccelerating tube is positioned at the upstream of described the second accelerating tube, and described reflection-type phase shifter is arranged on describedIn two accelerating tubes.
In addition, the present invention also provides a kind of control method for above-mentioned accelerator, described secondThe cylinder of parts is located in described the first cavity, in described the first cavity and described cylinder oneCross section be circular and be static, another in described the first cavity and described cylinderCross section is oval, and described control method comprises:
With repetition rate v hertz to launched microwave pulse in described accelerator;
Described drive unit drive in described the first cavity and described cylinder described another withRotation speed n rev/min rotation, wherein n=15vm, m is odd number, 1,3,5 ..., make to work asWhen each microwave pulse transmitting, the major axis of described oval cross section turns to level or verticalState, the phase shift between the adjacent microwave in described phase shifter exit is 180 degree.
Based on technique scheme, the phase shifter of the embodiment of the present invention belongs to control mechanicallyThe phase shifter of system, by the distance quilt between the inwall at first component and the outer wall of second componentBe configured to change periodically continuously on circumferentially, can make microwave enter first component from entranceAnd behind gap between second component, by the change that relatively rotates of first component and second componentThe cross section orientation in this gap, thus make the phase place of this microwave in the time entering and leave the first portHave a phase shift, this mode is simple in structure, and controllability is stronger, is embodied in the scope of phase shiftCan control by the structural parameters that change parts, the speed of phase shift can be rotated by changeSpeed is controlled.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the applicationA part, schematic description and description of the present invention is used for explaining the present invention, not structureBecome inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 is the structural representation of an embodiment of phase shifter of the present invention;
Fig. 2 be phase shifter of the present invention in the course of the work microwave phase with First and secondThe curve synoptic diagram that relative rotation angle changes;
Fig. 3 is the microwave state variation schematic diagram of phase shifter in prior art;
Fig. 4 is the structural representation that comprises the accelerator of phase shifter of the present invention.
Description of reference numerals
1-first component; 2-second component; 3-square wave guide; 4-the first gradual change portion; 5-Circular waveguide; 6-cylindrical portion; 7-the second gradual change portion; 8-elliptical section; 9-choke structure; 10-driving connecting portion.
Detailed description of the invention
Below describe the present invention in detail. In following paragraph, define in more detail embodimentDifferent aspect. The each side so limiting can with any other one aspect or many aspectsCombination, not capable of being combined unless explicitly stated otherwise. Especially, be considered to preferred or favourable appointingWhat feature can one or morely be considered to preferred or favourable feature with other.
The term such as " first ", " second " occurring in the present invention is only for convenience of description,To distinguish the different building blocks with same names, do not represent successively or primary and secondary relation.
In description of the invention, it will be appreciated that, term " interior ", " outward ", " front ",Orientation or the position relationship of the instruction such as " afterwards ", " left side " and " right side " are based on shown in the drawingsOrientation or position relationship, be only the present invention for convenience of description, instead of instruction or hint indicationDevice must there is specific orientation, with specific orientation structure and operation, therefore can not manageSeparate as limiting the scope of the invention.
The present invention has changed in prior art and has changed the realization of Ferrite Material parameter by external circuitThe mode of microwave phase shift, provides a kind of reflection phase shifter, as shown in Figure 1, and this phase shifterComprise first component 1 and second component 2, first component 1 has the first cavity, second component 2(preferably coaxial) is located in first component 1, phase shifter be constructed such that microwave therein byBe reflected back, make the opposite direction of the microwave of the microwave that enters and outgoing, first of the first cavityPort is as microwave entrance and microwave outlet; Outside the inwall of first component 1 and second component 2Distance between wall changes periodically continuously on circumferentially, makes as first component 1 and secondWhile relatively rotating between part 2, the getting of the cross section between first component 1 and second component 2To continuous variation, adjacent microwave pulse can run into different cross section orientations, makes adjacentBetween microwave pulse, produce phase shift.
As shown in Figure 1, between first component 1 and second component 2, relatively rotate, like this forSpecific geometry design, just can change the inwall of first component 1 and second component 2The cross section in gap orientation between outer wall, makes adjacent microwave pulse by running at that time notSame cross section orientation, needing like this cross section is that non-circular parts rotate, and just can reachTo the object of phase shift.
As shown in Figure 1, in one exemplary embodiment, if second component 2 rotates,Also can be provided with and drive connecting portion 10, driving connecting portion 10 is positioned at the second port of the first cavity 5,Rotate for be connected to control second component 2 with driver part. Wherein, driver part can selectSelect motor or other driver parts, for example, motor can be arranged on to the end of first component 1Face, and the axle of motor is connected with second component 2. By controlling motor quick rotation, with regard to energyRealize quick phase shift, the time of phase shift can realize by controlling motor speed.
Alternatively, the distance between the inwall of first component 1 and the outer wall of second component 2 is in weekUpwards change continuously taking 180 ° as the cycle, can by first component 1 and second component 2 itBetween the cross section orientation that relatively rotates to change this gap, thereby make adjacent microwave pulseBetween produce phase shift.
Between the inwall of the first cavity 5 at first component 1 and the outer wall of second component 2Distance upwards taking 180 ° as cycle continuity variation, is left the adjacent microwave of phase shifter in weekPhase shift between pulse can be in the scope of 0 ° to 180 °.
According to above-mentioned core design thought, can choose first component 1 and second component 2Different shapes realizes microwave phase shift, will provide several concrete ways of realization below.
In the first embodiment, corresponding with the structure shown in Fig. 1, the first cavity comprises round rippleLead 5, circular waveguide 5 is the rounded cavity of cross section, and second component 2 is located in circular waveguide 5,Second component 2 comprises elliptical section 8, and elliptical section 8 is the cylinder of cross section ovalize, phase shiftWhen device work, need to control second component 2 rotates.
The shape of cross section of the first inner chamber 11 can be rectangle, equilateral triangle or regular polygon,To guarantee that its shape of cross section is symmetrical with respect to pivot.
In a second embodiment, the first cavity comprises elliptical waveguide, and elliptical waveguide is that cross section isOval-shaped cavity, second component 2 is located in elliptical waveguide, and second component 2 comprises cylindrical portion,When phase shifter work, need to control first component 1 rotates.
In the 3rd embodiment, the first cavity comprises circular waveguide 5, and circular waveguide 5 is for cross sectionCircular cavity, second component 2 is located in circular waveguide 5, second component 2 comprise rectangular portion,Equilateral triangle portion or regular polygon portion, rectangular portion, equilateral triangle portion or regular polygon portion are respectivelyCross section is rectangular, the cylinder of equilateral triangle or regular polygon, when phase shifter work, needs to controlSecond component 2 rotates.
Further, first component 1 also comprises the second cavity, and the second cavity is by the first cavityFirst end be communicated with the first cavity, the second cavity comprises the first guide portion near the first port,Be used for guiding microwave to enter in the first cavity.
Particularly, the first guide portion comprises square wave guide 3 and the first gradual change portion 4, and square wave guide 3 isThe cavity that cross section is square, the first gradual change portion 4 is connected between square wave guide 3 and circular waveguide 5,Realize first component 1 and faded to circular waveguide 5 by square wave guide 3. The design of the first gradual change portion 4Be mainly to consider between square wave guide 3 and circular waveguide 5 structurally to seamlessly transit, and easily addWork. In addition, square wave guide 3 and the first gradual change portion 4 also can adopt other shape, just orderThe structure of front phase shifter is mainly square wave guide, and this is for can single mode in microwave transmissionTransmission. If but in special application, being also not limited to square wave guide 3, circular waveguide also canWith.
Further, second component 2 also comprises the second guide portion, and the second guide portion is positioned at firstPort, for the microwave entering being guided to the space between circular waveguide 5 and elliptical section 8,Main purpose is for seamlessly transitting on implementation structure, and makes the field of phase shifter inside more equalEven, cylinder is adding man-hour also than being easier to simultaneously.
Particularly, second component 2 also comprises cylindrical portion 6 and 7, the second gradual changes of the second gradual change portionPortion 7 is connected between cylindrical portion 6 and elliptical section 8, and cylindrical portion 6 is positioned near the first cavity theOne port one end, has realized second component 2 and has faded to elliptical section 8 by cylindrical portion 6. Second graduallyThe design of change portion 7 is mainly to consider between cylindrical portion 6 and elliptical section 8 structurally level and smooth mistakeCross, and easily processing. In addition, cylindrical portion 6 and the second gradual change portion 7 also can take otherShape.
For the phase shifter of above-described embodiment, because one end of phase shifter is simultaneously as microwave entranceWith microwave outlet, mix for fear of incident microwave and outgoing microwave, phase shift of the present inventionDevice also comprises the circulator (not shown) of the first port that is located at the first cavity, forSeparate incident microwave and microwave reflection, particularly can be by controlling incident microwave and outgoing microwaveSequential separate.
For phase shifter of the present invention, in order to realize the isolation of microwave, also need to arrange chokes knotStructure 9, choke structure 9 can not affect the counterrotating while, be located at first component 1 withBetween the second component 2 and position of the second port of close the first cavity, or also can arrangeOn second component 2, for microwave being isolated in to a side of choke structure 9, thereby to incidentMicrowave after phase shift, reflecting, it is actually shifts short circuit face. At figureIn embodiment shown in 1, choke structure 9 is driving between connecting portion 10 and elliptical section 8.
The phase shifter matching for circular waveguide 5 and elliptical section 8, its operation principle is: microwaveEnter cavity from square wave guide 3 and start continuous transmission, can be through circular waveguide 5 in the process of transmissionAnd gap between elliptical section 8, rotating by controlling second component 2, adjacent microwave is at warpWhile crossing this gap, can run into different cross section orientations, make not thereby realized by frame for movementMeet different cross section orientation with the microwave pulse of time, realized adjacent microwave pulse itBetween phase shift. Just can realize microwave phase by driver part control second component 2 high speed rotatingThe quick variation of position.
In Fig. 2, provide the change curve of microwave phase with oval corner, different corner correspondencesThe different time, curve entirety meets sinusoidal variations rule substantially.
Phase shifter of the present invention can be used as high power phase shifter, and high power refers to high microwave meritRate, the direct power out of power source is pulse power now, is not mean power, can arrive50MW, more than arriving 200MW through pulse compression.
In the embodiment of phase shifter of the present invention, the parameter designing of all parts is mainly from belowAngle considers, the selection of circular waveguide 5 diameters is relevant with micro-wave frequency, the selection master of lengthRelevant with phase shift, phase shift is larger, and length is also just longer. Can be not right except oval other partsPhase shift produces and changes, exactly because in the relatively rotating and just changed of circular waveguide 5 and elliptical section 8The boundary condition of portion, has just changed phase-shift constant. Oval geometric parameter major axis a and minor axis bBe the major parameter that phase shift is changed, major axis a and minor axis b differ more, for same distancePhase shift is just larger. In addition, in the design of geometric parameter, an oval just part, in fact rotatesPart comprise the adjustment of any size in cylindrical portion 6 and the second gradual change portion 7 and how much mechanismsChange and also likely realize phase shift.
Known by aforesaid analysis, this kind of phase shifter is by adjusting first component 1 and secondThe speed that relatively rotates of part 2 can change the required time of phase shift that reaches identical, first component1 and second component 2 to relatively rotate speed faster, there is the required time of identical phase shift in microwaveJust shorter, thereby can realize the quick of phase shifter by controlling the rotary speed of rotatable partsPhase shift.
Aspect the technique effect that can reach at phase shifter of the present invention, for the embodiment of Fig. 1,Due to the cavity of first component 1 inside from first end successively by square wave guide 3, the first gradual change portion 4Form with circular waveguide 5, sectional area increases successively, and this cavity is easy to processing, and phase shifter is logicalThe change of crossing the sectional area orientation in gap between first component 1 and second component 2, can realizeBetween adjacent microwave, there is a phase shift, thereby phase shifter can adopt shorter length, thisAlso for the processing of phase shifter is provided convenience. In addition, the length of phase shifter is shorter also can try one's bestReduce the power attenuation of microwave, the size of phase shifter is relevant with the wave band of microwave.
In addition, the present invention also provides a kind of accelerator, and it comprises for accelerating acceleratorThe accelerating tube of electronics, above-mentioned reflection-type phase shifter and drive unit, described drive unit is used for makingObtaining first component 1 relatively rotates with second component 2.
As shown in Figure 4, dual intensity accelerator comprises two sections of accelerating tubes, and first paragraph accelerating tube is by electronicsAccelerate, the microwave phase of second segment accelerating tube is by phase shifter control of the present invention. Electron beam is byOne section of accelerating tube accelerates then to pass through second segment accelerating tube, and can produce like this two kinds can not energyElectron beam.
For example, the repetition rate of microwave pulse is 50Hz, launches in other words 50 each secondMicrowave pulse, when the first microwave pulse enters accelerator, phase shifter is in the first phase place,At this moment the electronics accelerating is out an energy. When the second adjacent microwave pulse enters acceleratorTime, because phase shifter is in the second phase place, the phase place of the second microwave is changed, instituteAnother one energy with the electronics accelerating out. In 1 second, the electricity of multiple different-energies will be hadSon bundle is accelerated out.
Above-mentioned for realize the basic implementation procedure of dual intensity accelerator based on phase shifter. The phase shift hereDevice can be ferrite-type, can be also that machinery is rotary-type.
Relate to the control method of accelerator of the present invention below, wherein motor revolution and microwave pulseThe relation of repetition rate as follows. Fig. 3 is orientation and the pulse of the elliptical guide in phase shifterThe schematic diagram of time relationship. Suppose that phase place corresponding to elliptical waveguide is sidewards 0 °, verticalPhase place corresponding to elliptical waveguide is 180 °, and the rotating speed of supposing motor is n rev/min, so everyThe time of turning around is 60/n second. The repetition rate v hertz of supposing microwave pulse is adjacentThe time interval of microwave pulse is 1/v. Corresponding ellipse of adjacent microwave pulse as seen from Figure 3Circular waveguide can rotate m times of 1/4 circle, and m is odd number, and 1,3,5 ... IfM* (60/n)/4=1/v, has just ensured that the phase shift between adjacent microwave pulse is 180 °, andThe relation of the repetition rate of motor speed and microwave pulse is: n=15vm rev/min, m is strangeNumber, 1,3,5 ... In the time of the transmitting of microwave pulse, elliptical waveguide turn to major axis level andVertically one of state, when adjacent next microwave pulse is launched, elliptical wave directive/guide turns toAnother in major axis level and vertically state. Because the elliptical wave that adjacent microwave pulse runs intoThe phase shift of leading is 180 degree, so adjacent microwave pulse is 180 in the phase shift of phase shifter outletDegree.
As can be seen from Figure 3,, during one 90 ° of every experience, elliptical section 8 is rotated1/4 week, the phase shift of microwave in the time entering and leave was 180 °, corresponding sinusoidal 1/4The individual cycle, can control in practice elliptical section 8 taking optional position as starting point half-twist so thatMicrowave phase shift is 180 °.
The phase shift that certainly, can also realize between adjacent microwave is 0 ° to 180 ° scopeOther interior values, thereby this specific character can be applied in for example, in polytype accelerator:
(1) phase shifter of the present invention has unique application the synthetic of high power ripple with in distributing,Refer to the waveform of multiple out of phase is synthesized, or be homophase not by a kind of waveform extractingThe waveform of position. When microwave is synthetic, the phase place of two-way microwave may be different, after synthesizing like thisMicrowave power is large not. If a road adds phase shifter therein, just can allow two-way microwave phasePosition is the same, and this is the application of synthesizing. In addition, microwave power distributes and can allow phase shifter and 3dBA kind of microwave device of the device such as coupler or magic T is used in conjunction with, and can realize the micro-of any ratioWavelength-division is joined, and wherein most important is exactly the phase shift of two-way microwave, and this can realize with phase shifter.
(2) in the phase place of accelerating can regulate in electronics microwave in different accelerating tubes, realThe synchronous acceleration of existing electronics.
(3) can realize multipotency accelerator, the microwave state diagram shown in Fig. 3 is that dual intensity acceleratesDevice, dual intensity accelerator refers to that microwave can only realize two discrete phase shifting states, and multipotency acceleratesDevice refers to the ellipse that also has multiple angle gradients between adjacent two ellipses, and multiple ellipseAngle change and be continuous state, realize multipotency accelerator and be the main order of this kind of phase shifter of designOne of. Multipotency accelerator can be used in rays safety detection apparatus, can scan stereo-picture.
And in each application example of above-mentioned phase shifter, microwave phase pace of change is faster,The repetition rate of system works just can be higher. As can see from Figure 3, each pulse pairAnswer an ellipse, the time between two pulses is exactly cycle T. If oval rotation is faster,The T between two pulses is just less, and repetition rate 1/T is also just larger. Different ellipses is rightAnswer different phase places, so the faster repetition rate of phase place variation is also just faster. Shown in Fig. 3 onlyBe dual intensity phase shifter, phase shifter of the present invention can be realized multipotency phase shifter.
Above to a kind of reflection-type phase shifter provided by the present invention and accelerator and operation side thereofMethod is described in detail. Apply specific embodiment herein to principle of the present invention and realityThe mode of executing is set forth, and the explanation of above embodiment is just for helping to understand side of the present inventionMethod and core concept thereof. It should be pointed out that for those skilled in the art,Under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention,These improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (14)
1. a reflection-type phase shifter, is characterized in that, comprises first component (1) and secondParts (2), described first component (1) has the first cavity (5), described second component (2)Be located in described the first cavity (5), described phase shifter be configured to microwave can be therein byBe reflected back, the first port of described the first cavity is as its entrance and exit;
Distance between the outer wall of the inwall of described cavity (5) and second component (2) is circumferentiallyUpper periodicity changes continuously, makes when described first component (1) and described second component (2)While relatively rotating, between the adjacent microwave pulse in the exit of described phase shifter, there is onePhase shift.
2. reflection-type phase shifter according to claim 1, is characterized in that, describedDistance between the outer wall of the inwall of the first cavity (5) and described second component (2) is circumferentiallyUpper taking 180 ° as cycle continuity variation.
3. reflection-type phase shifter according to claim 2, is characterized in that, described phaseMove in the scope of 0 ° to 180 °.
4. reflection-type phase shifter according to claim 1, is characterized in that, describedThe cylinder (8) of two parts (2) is located in described the first cavity (5), described the first cavity (5)Be circular and be static, described the first cavity with the cross section of in described cylinder (8)(5) distance between cross section and its pivot of another and in described cylinder (8)Upwards be variation periodically continuously week.
5. reflection-type phase shifter according to claim 4, is characterized in that, describedDescribed another cross section in one cavity (5) and described cylinder (8) be ellipse, rectangle,Equilateral triangle or regular polygon.
6. reflection-type phase shifter according to claim 1, is characterized in that, describedOne parts (1) are also provided with the second cavity, described the second cavity and described the first cavity (5)First end is communicated with, described the second cavity have near the first guide portion of described the first port (3,4), for guiding described microwave to enter in described the first cavity (5).
7. reflection-type phase shifter according to claim 6, is characterized in that, describedOne guide portion comprises square wave guide (3) and the first gradual change portion (4), and described square wave guide (3) is for cuttingThe cavity that face is square, described square wave guide (3) by described the first gradual change portion (4) with described inThe first cavity (5) is communicated with.
8. reflection-type phase shifter according to claim 4, is characterized in that, describedTwo parts (2) comprise the second guide portion (6,7), and described the second guide portion (6,7) is contiguousIn described the first port, for described microwave being guided to described the first cavity (5) and describedSpace between two parts (2).
9. reflection-type phase shifter according to claim 8, is characterized in that, describedTwo guide portion comprise cylindrical portion (6) and the second gradual change portion (7), and described cylindrical portion (6) is passed throughDescribed the second gradual change portion (7) is connected with the described cylinder (8) of described second component (2).
10. reflection-type phase shifter according to claim 1, is characterized in that, also comprisesBe located at the circulator of described the first port, for separating of the described microwave that enters with reflectDescribed microwave.
11. reflection-type phase shifters according to claim 1, is characterized in that, also compriseChoke structure (9), described choke structure (9) is located at described first component (1) and described theBetween two parts (2) and the position of the second port of contiguous described the first cavity (5), forThe described microwave entering is reflected.
12. 1 kinds of accelerators, is characterized in that, comprise electronics for accelerating acceleratorAccelerating tube, reflection-type phase shifter claimed in claim 1 and drive unit, described drive unitBe used for making described first component (1) and described second component (2) to relatively rotate.
13. accelerators according to claim 12, is characterized in that, described acceleratorComprise the first accelerating tube and the second accelerating tube, described the first accelerating tube is positioned at described the second accelerating tubeUpstream, described reflection-type phase shifter is arranged in described the second accelerating tube.
The control method of 14. 1 kinds of accelerators according to claim 12, its feature existsIn, the cylinder (8) of described second component (2) is located in described the first cavity (5), described inThe cross section of one in the first cavity (5) and described cylinder (8) is circular and is static,The cross section of another in described the first cavity (5) and described cylinder (8) is oval,Described control method comprises:
With repetition rate v hertz to launched microwave pulse in described accelerator;
Described drive unit drive in described the first cavity (5) and described cylinder (8) described inAnother is with rotation speed n rev/min rotation, wherein n=15vm, and m is odd number, 1,3,5 ...,Make in the time of the transmitting of each microwave pulse, the major axis of described oval cross section turn to level orThe vertical state of person, the phase shift between the adjacent microwave in described phase shifter exit is 180 degree.
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| CN111463539A (en) * | 2020-05-29 | 2020-07-28 | 四川大学 | Three-dimensional multipath radial power divider |
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| CN101411024A (en) * | 2006-03-31 | 2009-04-15 | 京瓷株式会社 | Phase shifter, high frequency transmitter, high frequency receiver, high frequency transmitter-receiver, radar apparatus, and antenna system provided with the phase shifter |
| CN205319271U (en) * | 2015-12-25 | 2016-06-15 | 清华大学 | Looks ware and accelerator are moved to reflection -type |
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| US4420729A (en) * | 1981-04-24 | 1983-12-13 | Ferranti Plc | Microwave phase-shifting apparatus |
| JP2000196302A (en) * | 1998-12-25 | 2000-07-14 | Sumitomo Electric Ind Ltd | Variable distribution phase shifter |
| US20020153968A1 (en) * | 2001-04-16 | 2002-10-24 | Murata Manufacturing Co., Ltd. | Phase shifter, phased-array antenna, and radar |
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| CN101411024A (en) * | 2006-03-31 | 2009-04-15 | 京瓷株式会社 | Phase shifter, high frequency transmitter, high frequency receiver, high frequency transmitter-receiver, radar apparatus, and antenna system provided with the phase shifter |
| CN205319271U (en) * | 2015-12-25 | 2016-06-15 | 清华大学 | Looks ware and accelerator are moved to reflection -type |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111463539A (en) * | 2020-05-29 | 2020-07-28 | 四川大学 | Three-dimensional multipath radial power divider |
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|---|---|
| CN105609902B (en) | 2018-06-01 |
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