CN206947479U

CN206947479U - A kind of mechanical coaxial waveguide microwave phase shifter of high power

Info

Publication number: CN206947479U
Application number: CN201720864003.9U
Authority: CN
Inventors: 张健穹; 刘庆想; 梁源; 李相强; 王邦继
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2017-07-17
Filing date: 2017-07-17
Publication date: 2018-01-30
Anticipated expiration: 2027-07-17

Abstract

The utility model discloses a kind of mechanical coaxial waveguide microwave phase shifter of high power, including outer conductor and the inner conductor component coaxial with the outer conductor；The inner conductor component includes canned paragraph and active segment, the canned paragraph has the tubular of opening in top, the active segment has the tubular of opening in bottom, and the internal diameter of the canned paragraph matches with the external diameter of the active segment, and the active segment can slide along the inwall of the canned paragraph；Also include the control structure of distance between controlling at the top of the canned paragraph bottom and the active segment；The control structure includes motor, and the gear to cooperate is provided between the motor and the active segment.By controlling the length of inner conductor component, that is, control position of the active segment to canned paragraph point of cut-off, you can realize TEM TM₀₁The conversion of pattern；By controlling distance between active segment truncation surface and outer conductor top, after the telescopic extensions of design is met length requirement, you can reach 360 ° of phase shift function.

Description

A kind of mechanical coaxial waveguide microwave phase shifter of high power

Technical field

Microwave transmission technology field, particularly High-Power Microwave transmission technique field are the utility model is related to, specifically, It is related to a kind of mechanical coaxial waveguide microwave phase shifter of high power.

Background technology

Rectangular waveguide, circular waveguide, coaxial line are common microwave transmission lines, and rectangular waveguide is uniconductor, section rectangle；Circle Waveguide is uniconductor, section circle；Coaxial line is two pass topic conductor, is made up of inside and outside coaxial round conductor, is to be between conductor The dielectric structure of annulus.Divided with regular electromagnetic field to the microwave cycle transmitted in this several uniformly, long straight transmission line Cloth.Phase shifter is a kind of device important in microwave device, is mainly used in the processing to particular phases demand, is widely used in thunder Reach, communicate, in the various fields such as instrument and meter, power electronics.Weighed very much because phase shifter has to the performance of equipment and system To be influenceed with direct, therefore study with high accuracy, high conversion speed, high power capacity, small, small volume and in light weight be lost Phase shifter it is significant.

Divided according to implementation, phase shifter can be categorized as mechanical phase shifter, ferrite phase shifter, solid-state phase shifter Deng.Usually wherein there is higher power capacity and higher reliability using the phase shifter for mechanically realizing phase shift.Especially Especially pay attention to the power capacity of each device in High Power Microwave System, so using mechanical phase shifter of the waveguide as carrier Usually it is used in such systems.

Mechanical phase shifter is also to develop to obtain a kind of phase shifter earlier, general using reality by the way of linear mobile or rotation Existing phase shift function.Mechanical phase shifter is that one kind that Fox A.G. propose in nineteen forty-seven is revolved by changing earlier in document report Turn the dieelctric sheet in circular waveguide to change output phase [Fox A.G.An adjustable wave-guide phase Changer [J] .Proceedings of the IRE, 1947,35 (12):1489-1498]；Or by changing transmission line The wave number of dielectric constant and electromagnetic wave, which is realized, influences output phase [Collin R.E.Waveguide phase changer [J] .Wireless Engineer, 1955,32 (3):81-87]、[Collin R.E.Field theory of guided waves [M].New York:IEEE press, 1991,272-274].

Nineteen sixties Hansen R.C proposes a kind of phase shifter of aircoaxial structure, is that a kind of single-frequency is moved Phase device, phase shift can be realized by changing the physical length of its transmission line, and coaxial main body can stretch, also with machinery Reliability of structure [Hansen R.C.Microwave Scanning Antennas [C] .Academic Press, Mc Graw-Hill, New york.1966,273-278].

Mechanical phase shifter is relatively conventional in the High-Power Microwave application in modern times.Domestic aspect, Zhao Xuelong have developed one Kind is used for TM₀₁The phase shifter of transmission, two right-angled intersection circular polarizers have been used to realize phase shift in a manner of rotating against, to rotation Gyration precise control requires higher [Zhao Xuelong, Yuan Chengwei, Liu Lie, Peng Shengren, Bai Zhen, Cai Dan High-Power Microwaves TM₀₁Mould Formula phase shifter [J] National University of Defense technology journal, 2015, (02):40-42].Q.Zhang inserts metal length of a film by using change The method control phase of degree, while higher [Q.Zhang, C.Yuan and the L.Liu.Studies on of phase shifter efficiency of transmission mechanical tunable waveguide phase shifters for phased-array antenna applications.2016IEEE International Symposium on Phased Array Systems and Technology (PAST), Waltham, MA, 2016, pp.1-3].The rectangular waveguide phase shifter of the designs such as China Physics Institute Liao Yong, its The sheet metal that can be moved along waveguide broadside placed in rectangular waveguide parallel to electric field realizes variable phase shift [Liao in waveguide Bravely, Xie Ping, Xu Gang, Chen Shitao, Shi Meiyou, horse expand a kind of High-Power Microwave metal-plate waveguide phase shifter designs of barge and characteristic point Analysis [J] light lasers and the particle beams, 2015, (06):198-203].

Utility model content

It is small, compact-sized that main purpose of the present utility model is to provide a kind of loss, while done with high accuracy microwave mode A kind of mechanical coaxial waveguide microwave phase shifter of high power of formula translation function.

To achieve these goals, the utility model provides a kind of mechanical coaxial waveguide microwave phase shifter of high power, The coaxial inner conductor component including outer conductor and with the outer conductor；The inner conductor component includes canned paragraph and active segment, institute Stating canned paragraph has the tubular of opening in top, and the active segment has the tubular of opening, the internal diameter of the canned paragraph in bottom Matched with the external diameter of the active segment, the active segment can slide along the inwall of the canned paragraph；Also include controlling the fixation The control structure of distance between at the top of section bottom and the active segment；The control structure includes motor, the motor with it is described The gear to cooperate is provided between active segment.

The mechanical coaxial waveguide microwave phase shifter of a kind of high power of the present utility model has advantages below：1) TEM mode With TM₀₁Pattern is the more similar SYMMETRICAL FIELD distribution pattern of two kinds of magnetic distributions and TM₀₁Pattern is fast in Circular waveguides Ripple；Because the active segment in the inner conductor component can slide along the inwall of the canned paragraph, therefore by controlling inner wire group The length of part, that is, control position of the active segment to canned paragraph point of cut-off, you can realize TEM-TM₀₁The conversion of pattern；2) according to institute Waveguide wavelength under the microwave frequency of transmission minimum scalable scope, the length required for calculating are at least the one of waveguide wavelength Times, by controlling distance between active segment truncation surface and outer conductor top, after the telescopic extensions of design is met length requirement, i.e., It can reach 360 ° of phase shift function.It is of the present utility model simple in construction, there is higher power capacity.

Further, control structure of the present utility model can be entered by following three kinds of modes come the up and down motion to active segment Row control：

The first：It is provided with movable rod at the top of the active segment, the movable rod is axially arranged with first gear, described Motor is provided with the first rotate gear coordinated with the first gear, and first rotate gear is spur gear.Preferably, institute It is parallel with the central shaft of the outer conductor and inner conductor component to state movable rod.

Second：The active segment inwall is axially arranged with first gear, and the motor is provided with matches somebody with somebody with the first gear The first rotate gear closed, first rotate gear is spur gear., can be described solid in the first and the second way Determine the support that section bottom is provided for supporting the motor.

The third：The active segment inwall is axially arranged with first gear, and the motor is provided with the second rotate gear, described Control structure also includes the driven gear coordinated with the first gear, the driving gear coordinated with second rotate gear, The driven gear and driving gear are serially connected in rotating shaft, and the active segment inwall is axially arranged with the guiding matched with the rotating shaft Groove, the canned paragraph are provided with and the turn hole for the axis of rotation；Second rotate gear and the driving gear are oblique Gear.

Further, being provided between the outer conductor and canned paragraph makes the hollow of the canned paragraph and outer conductor turned on outside Bar.The hollow stem one can fix the relative position of outer conductor and inner conductor component, and two can be as the cloth of motor cable Passage is put, motor is positioned over the inside of canned paragraph, largely reduces the volume of whole phase shifter.

Further, it is provided with rounding at the top of the active segment.Rounding at the top of active segment helps to reduce this position The electric-field intensity at place, realizes high power capacity；Meanwhile the efficiency of coaxial waveguide-circular waveguide patten transformation can be improved, reduce anti- Penetrate and realize matching.

Further, with being provided with 45 ° of corner cuts at the cooperation of the active segment at the top of the canned paragraph.Thus, this knot is lowered Reflection at structure, improve matching performance.

It can be seen that the utility model is simple and compact for structure, TM is utilized₀₁The characteristics of pattern is fast wave in transmission line, in control Conductor assembly length ratio shared in phase shifter realizes phase shift function.Compared to digital type microwave phase shifter, the utility model A kind of mechanical coaxial waveguide microwave phase shifter of high power there is higher-wattage capacity；Compared to similar mechanical phase shifter, The mechanical coaxial waveguide microwave phase shifter of a kind of high power of the present utility model has higher phase shifting accuracy.

The utility model is described further with reference to the accompanying drawings and detailed description.What the utility model added Aspect and advantage will be set forth in part in the description, and partly will become apparent from the description below, or pass through this practicality New practice is recognized.

Brief description of the drawings

Form a part of accompanying drawing of the present utility model to be used for aiding in understanding of the present utility model, provided in accompanying drawing Content and its relevant explanation in the utility model can be used for explaining the utility model, but do not form to it is of the present utility model not Work as restriction.In the accompanying drawings：

Fig. 1 is a kind of sectional view of the mechanical coaxial waveguide microwave phase shifter of high power of the utility model embodiment 1.

Fig. 2 is a kind of sectional view of the mechanical coaxial waveguide microwave phase shifter of high power of the utility model embodiment 2.

Fig. 3 is a kind of sectional view of the mechanical coaxial waveguide microwave phase shifter of high power of the utility model embodiment 3.

Fig. 4 is a kind of end of the emulation of the mechanical coaxial waveguide microwave phase shifter of high power of the utility model embodiment 3 Oral reflex result.

Fig. 5 is a kind of field of the emulation of the mechanical coaxial waveguide microwave phase shifter of high power of the utility model embodiment 3 Strong distribution results.

Relevant mark in above-mentioned accompanying drawing for：

1：Outer conductor；

2：Canned paragraph；

3：Hollow stem；

4：Active segment；

5：First gear；

6：Driven gear；

7：Driving gear；

8：Second rotate gear；

9：Rotating shaft；

10：Motor；

11：Guide groove；

12：Movable rod；

13：First rotate gear；

14：Support；

r：The radius of rounding is provided with the top of active segment；

h1：The length of canned paragraph；

h2：The length of active segment；

h3：The length of outer conductor；

The internal diameter of canned paragraph；

The external diameter of active segment；

The external diameter of canned paragraph；

The external diameter of hollow stem；

The internal diameter of outer conductor；

c：The length of side of 45 ° of corner cuts at the top of first inner wire and at the cooperation of the second inner wire.

Embodiment

Clear, complete explanation is carried out to the utility model below in conjunction with the accompanying drawings.Those of ordinary skill in the art based on The utility model can be realized in the case of these explanations.It is before being illustrated with reference to accompanying drawing to the utility model, it is necessary to special It is not pointed out that：

Technical scheme and technical characteristic in the utility model provided in each several part including the description below, In the case of not conflicting, these technical schemes and technical characteristic can be mutually combined.

In addition, the embodiment of the present utility model being related in the description below is generally only the reality of the branch of the utility model one Apply example, rather than whole embodiments.Therefore, do not had based on the embodiment in the utility model, those of ordinary skill in the art There is the every other embodiment obtained on the premise of making creative work, should all belong to the model of the utility model protection Enclose.

On term in the utility model and unit.Specification and claims of the present utility model and relevant part In term " comprising ", " having " and their any deformation, it is intended that cover non-exclusive include.

It should be noted that TM is the English abbreviation of transverse magnetic wave, TM ripples are zero in the magnetic field of transmission line axial direction.After them Sew digital mn, such as TM_mnMiddle m, n refer to null n-th of m rank Bessel functions for solving transmission wave equation.M, n has more Kind value, the pattern in addition to basic mode are referred to as higher mode, and the wherein basic mode of circular waveguide is TM₁₁, the basic mode of coaxial line is TEM.

Embodiment 1

The mechanical coaxial waveguide microwave phase shifter of a kind of high power as shown in Figure 1, including outer conductor 1 and outer led with described The coaxial inner conductor component of body 1.

The inner conductor component includes canned paragraph 2 and active segment 4, and the canned paragraph 2 has the tubular of opening, institute in top Stating active segment 4 has the tubular of opening in bottom, and the internal diameter of the canned paragraph 2 matches with the external diameter of the active segment 4, the work Dynamic section 4 can be slided along the inwall of the canned paragraph 2.

Also include the control structure for controlling distance between the bottom of canned paragraph 2 and the top of the active segment 4；The control Structure includes motor 10, and the top of active segment 4 is provided with movable rod 12, and the movable rod 12 is axially arranged with first gear 5, the motor 10 is provided with the first rotate gear 13 coordinated with the first gear 5, and first rotate gear 13 is straight Gear.

The bottom of canned paragraph 2 is provided with the support 14 for being used for supporting the motor 10.

The movable rod 12 is parallel with the central shaft of the outer conductor 1 and inner conductor component.

Being provided between the outer conductor 1 and canned paragraph 2 makes the hollow stem 3 of the canned paragraph 2 and the turned on outside of outer conductor 1. The hollow stem 3 is three, and is symmetric.

The top of active segment 4 is provided with rounding.

The top of canned paragraph 2 at the cooperation of the active segment 4 with being provided with 45 ° of corner cuts.

Embodiment 2

The mechanical coaxial waveguide microwave phase shifter of a kind of high power as shown in Figure 2, including outer conductor 1 and outer led with described The coaxial inner conductor component of body 1.

Also include the control structure for controlling distance between the bottom of canned paragraph 2 and the top of the active segment 4；The control Structure includes motor 10, and the inwall of active segment 4 is axially arranged with first gear 5, and the motor 10 is provided with and first tooth The first rotate gear 13 that wheel 5 coordinates, first rotate gear 13 is spur gear.

The top of active segment 4 is provided with rounding.

Embodiment 3

The mechanical coaxial waveguide microwave phase shifter of a kind of high power as shown in Figure 3, including outer conductor 1 and outer led with described The coaxial inner conductor component of body 1.

Also include the control structure for controlling distance between the bottom of canned paragraph 2 and the top of the active segment 4；The control Structure includes motor 10, and the inwall of active segment 4 is axially arranged with first gear 5, and the motor 10 is provided with the second rotate gear 8, the control structure also includes what is coordinated with the driven gear 6 of the first gear 5 cooperation, with second rotate gear 8 Driving gear 7, the driven gear 6 and driving gear 7 are serially connected in rotating shaft 9, the inwall of active segment 4 be axially arranged with it is described The guide groove 11 that rotating shaft 9 matches, the canned paragraph 2 are provided with the turn hole with being rotated for the rotating shaft 9；Second rotate gear 8 and the driving gear 7 be helical gear.

The top of active segment 4 is provided with rounding.

When a kind of mechanical coaxial waveguide microwave phase shifter of high power of the present embodiment has parameter shown in table 1, emulation Port reflection results as shown in figure 4, wherein, curve 1 represents reflectance factor S1 (1) 1 (1), curve 2 represents TM₀₁The biography of pattern Defeated coefficient S 2 (3) 1 (1), in its TM of center frequency point 6.5GHz₀₁The conversion ratio of pattern is 98.7%, in whole frequency band 5.7GHz- Conversion ratio is more than 90% in 7.3GHz, and frequency band of the reflectance factor less than 0.2 is 6.2GHz-6.8GHz.Maximum field strength in device 1341V/m, when calculating using the breakdown threshold 30kV/cm in air, 0.5 watt of power output, it is computed understanding the phase shifter Power capacity is 2.5MW.

When a kind of mechanical coaxial waveguide microwave phase shifter of high power of the present embodiment has parameter shown in table 1, emulation Field strength distribution result as shown in figure 5, from fig. 5, it can be seen that maximum field strength is 1341V/m in phase shifter.When using in air Breakdown threshold 30kV/cm, the watt-hour of power output 0.5, be computed understand the phase shifter power capacity be 2.5MW.

Table 1 is a kind of structural parameters of the mechanical coaxial waveguide microwave phase shifter of high power of embodiment 3.

Relevant content of the present utility model is illustrated above.Those of ordinary skill in the art are based on these explanations In the case of can realize the utility model.Based on the above of the present utility model, those of ordinary skill in the art are not having There is the every other embodiment obtained on the premise of making creative work, should all belong to the model of the utility model protection Enclose.

Claims

A kind of 1. mechanical coaxial waveguide microwave phase shifter of high power, it is characterised in that：Led outside including outer conductor (1) and with described The coaxial inner conductor component of body (1)；

The inner conductor component includes canned paragraph (2) and active segment (4), and the canned paragraph (2) has the tubular of opening in top, The active segment (4) has the tubular of opening, the internal diameter of the canned paragraph (2) and the external diameter of the active segment (4) in bottom Match somebody with somebody, the active segment (4) can be slided along the inwall of the canned paragraph (2)；

Also include the control structure of distance between controlling at the top of canned paragraph (2) bottom and the active segment (4)；The control Structure includes motor (10), and the gear to cooperate is provided between the motor (10) and the active segment (4).
A kind of 2. mechanical coaxial waveguide microwave phase shifter of high power as claimed in claim 1, it is characterised in that：The activity Movable rod (12) is provided with the top of section (4), the movable rod (12) is axially arranged with first gear (5), the motor (10) The first rotate gear (13) coordinated with the first gear (5) is provided with, first rotate gear (13) is spur gear.
A kind of 3. mechanical coaxial waveguide microwave phase shifter of high power as claimed in claim 2, it is characterised in that：The activity Connecting rod (12) is parallel with the central shaft of the outer conductor (1) and inner conductor component.
A kind of 4. mechanical coaxial waveguide microwave phase shifter of high power as claimed in claim 1, it is characterised in that：The activity Section (4) inwall is axially arranged with first gear (5), and the motor (10) is provided with first turn coordinated with the first gear (5) Moving gear (13), first rotate gear (13) are spur gear.
A kind of 5. mechanical coaxial waveguide microwave phase shifter of high power as described in claim 2 or 4, it is characterised in that：It is described Canned paragraph (2) bottom is provided with the support (14) for being used for supporting the motor (10).
A kind of 6. mechanical coaxial waveguide microwave phase shifter of high power as claimed in claim 1, it is characterised in that：The activity Section (4) inwall is axially arranged with first gear (5), and the motor (10) is provided with the second rotate gear (8), and the control structure is also Including the driven gear (6) coordinated with the first gear (5), the driving gear coordinated with second rotate gear (8) (7), the driven gear (6) and driving gear (7) are serially connected in rotating shaft (9), and active segment (4) inwall is axially arranged with and institute The guide groove (11) of rotating shaft (9) matching is stated, the canned paragraph (2) is provided with the turn hole with being rotated for the rotating shaft (9)；Described Two rotate gears (8) and the driving gear (7) are helical gear.
A kind of 7. mechanical coaxial waveguide microwave phase shifter of high power as claimed in claim 1, it is characterised in that：Led outside described Being provided between body (1) and canned paragraph (2) makes the hollow stem (3) of the canned paragraph (2) and outer conductor (1) turned on outside.
A kind of 8. mechanical coaxial waveguide microwave phase shifter of high power as claimed in claim 1, it is characterised in that：The activity Rounding is provided with the top of section (4).
A kind of 9. mechanical coaxial waveguide microwave phase shifter of high power as claimed in claim 1, it is characterised in that：The fixation With being provided with 45 ° of corner cuts at the cooperation of the active segment (4) at the top of section (2).