Rotary high-power mechanical phase shifter based on fan-shaped waveguide

Abstract

The invention provides a rotating high-power mechanical phase shifter based on a fan-shaped waveguide. The rotating high-power mechanical phase shifter comprises a waveguide transmission module, a mechanical moving module and a motor driving module. The waveguide transmission module comprises a fan-shaped waveguide shell and shape conversion shells, a first fan-shaped groove is formed in the fan-shaped waveguide shell, first channels are formed in the two sides of the fan-shaped waveguide shell, a first connecting plate is arranged on one side of the fan-shaped waveguide shell, a first choke body is arranged on the other side of the fan-shaped waveguide shell, and the two shape conversion shells are provided with second channels communicated with the first channels; the mechanical movable module comprises a mechanical movable shell, a second choking body and a rotating shaft, the second choking body is arranged on the rotating shaft, and the second choking body and the rotating shaft rotate at a certain angle in the mechanical movable shell; the motor driving module comprises a supporting body, a rotating motor, a gear set and other structures and is used for driving the rotating shaft and the second choke body to rotate. According to the invention, real-time phase adjustment can be carried out, a high-power microwave electromagnetic protection effect is achieved, and the overall compactness of the device can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of high-power microwave technology, and in particular to a rotating high-power mechanical phase shifter based on a fan-shaped waveguide. Background Art

[0002] The contents of this section merely provide background information related to the present application and may not constitute prior art.

[0003] Microwave phase shifters are a type of device used for microwave phase adjustment. According to their structure, they can be divided into semiconductor phase shifters, micro-electromechanical phase shifters, ferrite phase shifters and mechanical waveguide phase shifters. A large number of microwave phase shifters work together to achieve spatial scanning of the beam. They are key components of the current phased array radiation system. In high-power microwave application scenarios, most types of phase shifters are difficult to meet the power capacity requirements and are prone to failure and damage. In comparison, mechanical waveguide phase shifters can effectively avoid damage caused by power concentration due to their waveguide structure and no pins. They have better power capacity and thermal stability, and are therefore gradually being widely used in high-power microwave systems.

[0004] Mechanical waveguide phase shifters can be divided into reciprocating structures and rotating structures according to the mechanical operation mode. Reciprocating waveguide phase shifters include wide-side adjustable phase shifters, bridge phase shifters, etc. Rotating phase shifters include circular polarization waveguide phase shifters and turnstile waveguide phase shifters. Design based on waveguides of different shapes can meet different needs, but the above-mentioned mechanical waveguide phase shifters all have the following defects: the current phase shifters are large in size, with complex waveguide branches and low space utilization; the phase shift speed is slow and it is difficult to achieve the purpose of real-time phase adjustment; there is a potential electromagnetic compatibility problem due to the lack of choke protection structure. The traditional choke structure does not have conformal characteristics and is difficult to meet actual application needs. The above problems are not conducive to the multi-body cascading and real-time beam scanning of phase shifters, which seriously restricts the further development of high-power mechanical phase shifters and high-power phased array systems. Summary of the invention

[0005] In order to solve the above technical problems, the purpose of the present application is to provide a rotating high-power mechanical phase shifter based on a fan-shaped waveguide, which realizes the miniaturization of the high-power phased array system, can perform real-time beam scanning and has the effect of electromagnetic protection.

[0006] The purpose of this application is achieved through the following technical solutions:

[0007] A rotary high-power mechanical phase shifter based on a fan-shaped waveguide comprises a waveguide transmission module, a mechanical activity module and a motor drive module, wherein the waveguide transmission module comprises a fan-shaped waveguide housing and a shape conversion housing, wherein a first fan-shaped groove is provided inside the fan-shaped waveguide housing, a first channel is provided on both sides of the fan-shaped waveguide housing, a first connecting plate is fixedly provided on a straight side of one side of the fan-shaped waveguide housing, and a first choke body is fixedly provided on a straight side of the other side, wherein two shape conversion housings are provided, and the two shape conversion housings are respectively provided at both ends of the fan-shaped waveguide housing, and a second channel is provided on a side of the shape conversion housing close to the fan-shaped waveguide housing, and the first channel and the second channel are interconnected; wherein the mechanical activity module comprises a mechanical activity housing, a second choke body and a rotating shaft, wherein the rotating shaft is provided in the fan-shaped waveguide housing along the length direction of the fan-shaped waveguide housing, and the second choke body is provided on the rotating shaft along the length direction of the rotating shaft, and a first connecting member is provided on the fan-shaped waveguide housing, and the first connecting member is used to connect the fan-shaped waveguide housing and the mechanical activity housing; and wherein the motor drive module is used to drive the rotating shaft to rotate.

[0008] In some possible embodiments, the cross-section of the first choke body is arranged to be fan-shaped, the length of the first choke body is adapted to the inner length of the mechanical movable housing, and a first choke groove is provided on the first choke body.

[0009] In some possible embodiments, the first choke slot includes a first parallel slot and a plurality of first vertical slots, the first parallel slot is opened along the length direction of the first choke body, both ends of the first parallel slot are penetrated, the first vertical slot is opened along a length direction perpendicular to the first choke body, the first vertical slot is interconnected with the first parallel slot, and the plurality of first vertical slots are evenly distributed along the length direction of the first choke body.

[0010] In some possible embodiments, the first connecting member is configured as a first connecting bolt, and a second connecting plate is fixedly provided on one side of the mechanical movable housing along the length direction of the mechanical movable housing, and the side wall of the second connecting plate is used to abut against the first connecting plate, and a first connecting hole is opened on the first connecting plate, and the first connecting member is slidably passed through the first connecting hole, and a second connecting hole for threaded connection of the first connecting member is opened on the second connecting plate.

[0011] In some possible embodiments, the cross-section of the second choke body is set to be fan-shaped, the outer arc radius of the second choke body is smaller than the inner arc radius of the fan-shaped waveguide housing, and a second choke groove is opened on the second choke body.

[0012] In some possible embodiments, the second choke slot includes a second parallel slot and a second vertical slot, the second parallel slot is opened along the length direction of the second choke body, both ends of the second parallel slot are penetrated, the second vertical slot is opened along the length direction perpendicular to the second choke body, a plurality of the second parallel slots are evenly opened along the arc surface of the second choke body, a plurality of the second vertical slots are evenly arranged along the length direction of the second choke body, and the second parallel slots and the second vertical slots are staggered and connected to each other.

[0013] In some possible embodiments, the motor drive module includes a support body, a rotating motor and a gear set. The support body is provided with two support bodies, which are respectively arranged on both sides of the mechanical movable shell. A through hole is provided on the support body for the rotating shaft to pass through. A second connecting member is provided on the support body, and the second connecting member is used to connect the support body and the mechanical movable shell. A slot is provided on the support body, and the slot is adapted to the fan-shaped waveguide shell. The rotating motor is fixedly arranged on the support body, and the output shaft of the rotating motor is transmission-connected to the rotating shaft through a gear set.

[0014] In some possible embodiments, the gear set includes a driving gear and a driven gear, the driving gear is coaxially fixed on the output shaft of the rotating motor, the driven gear is coaxially connected to the rotating shaft, and the driving gear meshes with the driven gear.

[0015] In some possible embodiments, the rotating shaft includes a main shaft, a bearing shaft and a gear shaft, the length of the main shaft is adapted to the length of the second choke body, and the length of the main shaft is less than the length of the opening of the fan-shaped waveguide housing. A connecting bearing is sleeved on the bearing shaft, the bearing shaft and the connecting bearing are rotatably arranged in the through hole, and the driven gear is coaxially fixedly sleeved on the gear shaft.

[0016] In some possible embodiments, a receiving groove is opened on one side of the fan-shaped waveguide shell, one end of the gear shaft extends out of the fan-shaped waveguide shell and is located in the receiving groove, the driven gear is rotatably disposed in the receiving groove, and the size of the receiving groove is adapted to the driven gear.

[0017] In summary, the technical solution of the embodiment of the present application has at least the following advantages and beneficial effects:

[0018] 1. Based on the fan-shaped waveguide structure design, the phase adjustment is achieved by adjusting the rotation angle of the rotating shaft, and the microwave transmission, mechanical activity, and motor drive modules are integrated into a cylindrical cavity through the rotating motor and gears. The structure is more compact and simple, there are no complex waveguide branches in the three-dimensional space direction, and the space utilization rate is high;

[0019] 2. The phase is adjusted by rotating the choke body through the rotating shaft. The principle is to adjust the phase by changing the size of the fan-shaped waveguide and then changing the propagation constant in the microwave transmission path. The range of motion required to complete 360° phase adjustment is much smaller than that of traditional mechanical waveguide phase shifters.

[0020] 3. Compared with the traditional rotary mechanical waveguide phase shifter which requires the rotation of the shell, which has a large load on the driving motor, the present application replaces the rotation of the entire shell with the rotation of the choke body, effectively reducing the load of the motor, improving the dynamic characteristics of the motor drive, and further improving the real-time performance of the phase adjustment;

[0021] 4. This application is based on a metasurface choke structure, which forms an electromagnetic band gap through a periodically arranged slot structure, effectively preventing microwave crosstalk. Through the regularly arranged slot structure, it can effectively retain the trajectory characteristics of the object surface and has good conformal characteristics. In addition, it can also effectively suppress the coupled resonance phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0023] Figure 2 is a schematic structural diagram of a waveguide transmission module according to an embodiment of the present application;

[0024] Figure 3 is a schematic structural diagram of a first choke body according to an embodiment of the present application;

[0025] Figure 4 is a schematic structural diagram of a mechanical activity module according to an embodiment of the present application;

[0026] Figure 5 is a schematic structural diagram of a first connecting member in an embodiment of the present application;

[0027] Figure 6 is a schematic structural diagram of a second choke body according to an embodiment of the present application;

[0028] Figure 7 is a structural schematic diagram of a motor drive module according to an embodiment of the present application;

[0029] Figure 8 It is a schematic diagram of the local structure of an embodiment of the present application;

[0030] Fig. 9 It is the simulation S of the embodiment of the present application. 11 Graphs;

[0031] Fig.10 It is the simulation S of the embodiment of the present application. 21 Graphs;

[0032] Fig.11is a phase shift characteristic curve diagram of an embodiment of the present application;

[0033] Fig.12 It is a schematic diagram of the resonance suppression effect of an embodiment of the present application.

[0034] Icons: 1. Waveguide transmission module; 11. Fan-shaped waveguide housing; 12. Shape conversion housing; 13. First fan-shaped slot; 14. First channel; 15. First connecting plate; 151. First connecting hole; 16. Second channel; 2. Mechanical activity module; 21. Mechanical activity housing; 22. Second choke; 23. Rotating shaft; 231. Main shaft; 232. Bearing shaft; 233. Gear shaft; 24. First connecting piece; 25. Second connecting plate ; 251, second connecting hole; 26, second choke slot; 261, second parallel slot; 262, second vertical slot; 3, motor drive module; 31, support body; 32, rotating motor; 33, gear set; 331, driving gear; 332, driven gear; 34, through hole; 35, second connecting piece; 36, slot; 4, first choke body; 41, first choke slot; 411, first parallel slot; 412, first vertical slot; 5, accommodating slot. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] The following reference Figures 1 to 12 This application is described in further detail.

[0037] Reference Figure 1-Figure 4 A rotary high-power mechanical phase shifter based on a fan-shaped waveguide comprises a waveguide transmission module 1, a mechanical activity module 2 and a motor drive module 3 (such as Figure 7 shown).

[0038] Among them, refer to Figure 2As an embodiment of the present application, the waveguide transmission module 1 includes a fan-shaped waveguide shell 11 and a shape conversion shell 12, a first fan-shaped groove 13 is opened inside the fan-shaped waveguide shell 11, a first channel 14 is opened on both sides of the fan-shaped waveguide shell 11, a first connecting plate 15 is fixedly arranged on a straight edge on one side of the fan-shaped waveguide shell 11, and a first choke body 4 is fixedly arranged on a straight edge on the other side, two shape conversion shells 12 are provided, and the two shape conversion shells 12 are respectively arranged at both ends of the fan-shaped waveguide shell 11, and a second channel 16 is opened on a side of the shape conversion shell 12 close to the fan-shaped waveguide shell 11, and the first channel 14 and the second channel 16 are connected to each other.

[0039] Reference Figure 2 As an embodiment of the present application, the fan-shaped waveguide housing 11 is made of metal material, the thickness of the fan-shaped waveguide housing 11 is k, the inner cavity shape is a fan-shaped structure, and is surrounded by straight sides, outer arc sides, and inner arc sides on both sides. The outer arc radius of the fan-shaped cavity is b, the inner arc radius is r, the opening angle is u, the overall length is l, and the opening section length is h. Its size satisfies h <l。

[0040] Reference Figure 2 As an embodiment of the present application, the shape conversion shell 12 is made of metal material and has an overall length of l 1 , used to achieve the connection between waveguides of different shapes. The cross-sectional shape of the internal cavity on one side is consistent with the cross-sectional shape of the inner cavity of the fan-shaped waveguide housing 11, and the shape of the other side mainly depends on the actual application scenario, and can be set to a rectangular waveguide, a circular waveguide, or even other special-shaped waveguide structures. Flange structures are provided at both ends of the shape conversion housing 12, one end is tightly connected to the fan-shaped waveguide housing 11 by screws, and the other end can be cascaded with other waveguides of corresponding sizes or adapters.

[0041] As an implementation method of this application, refer to Figure 2 , showing a shape transformation shell 12 for transition from a fan-shaped waveguide to a standard BJ100 rectangular waveguide. There are two shape transformation shells 12 , which are distributed in a mirror-symmetrical manner and are respectively connected to the two side ports of the fan-shaped waveguide shell 11 .

[0042] Reference Figure 3 The cross-section of the first choke body 4 is set to be fan-shaped. The length of the first choke body 4 is adapted to the internal length of the mechanical movable housing 21, the length is h, and the two ends are flush with the two ends of the opening section respectively. A first choke groove 41 is opened on the first choke body 4.

[0043] As an embodiment of the present application, the first choke body 4 is a fan-shaped metal entity with an outer arc radius of b. 1 , b 1The length is usually equal to the outer arc radius b of the fan-shaped cavity plus the thickness k of the fan-shaped waveguide shell 1. The outer arc edge of the first choke body 4 usually forms an arc transition with the outer arc edge of the fan-shaped waveguide shell 1. The inner arc radius of the first choke body 4 is r 1 , r 1 It is usually larger than the inner arc radius r of the fan-shaped cavity, and the opening angle of the first choke body 4 is v.

[0044] As an implementation method of this application, refer to Figure 3 The first choke slot 41 includes a first parallel slot 411 and a plurality of first vertical slots 412. The first parallel slot 411 is opened along the length direction of the first choke body 4, and its length is h, width is e, and depth is d. Both ends of the first parallel slot 411 are penetrated, and the first vertical slot 412 is opened along the length direction perpendicular to the first choke body 4, and its width is w, depth is d, and its number is m. The first vertical slot 412 is interconnected with the first parallel slot 411, and the plurality of first vertical slots 412 are evenly distributed along the length direction of the first choke body 4.

[0045] The distribution rule of the first parallel slots 411 is that, with the first choke body 4 being flush with the first parallel slot 411 at e / 2 as a reference, a parallel slot structure is set at a vertical interval angle v / (n+1) (n is the number of the first parallel slots 411). The distribution rule of the first vertical slots 412 is that the first vertical slot 412 is at a distance of (h / m–e) / 2 from the first choke body 4, and a slot structure is set at a parallel interval distance h / m.

[0046] Reference Figure 4 The mechanically movable module 2 includes a mechanically movable shell 21, a second choke body 22 and a rotating shaft 23. The rotating shaft 23 is rotatably arranged in the fan-shaped waveguide shell 11 along the length direction of the fan-shaped waveguide shell 11. The second choke body 22 is arranged on the rotating shaft 23 along the length direction of the rotating shaft 23. A first connecting member 24 is arranged on the fan-shaped waveguide shell 11. The first connecting member 24 is used to connect the fan-shaped waveguide shell 11 and the mechanically movable shell 21.

[0047] Reference Figure 4 The mechanical movable shell 21 is a metal structure, and its shape is an open fan-shaped shell structure with a certain arc, and the shell thickness is k. The inner cavity of the mechanical movable shell 21 is a fan-shaped structure, which is respectively composed of fan-shaped sections at both ends and an outer arc edge. The outer arc radius of the fan-shaped cavity is b, and the opening angle is u. 1 , the overall length is h.

[0048] Reference Figure 5, as an implementation manner of the present application, the first connecting member 24 is set as a first connecting bolt. A second connecting plate 25 is fixedly arranged on one side of the mechanical movable housing 21 along the length direction of the mechanical movable housing 21. The side wall of the second connecting plate 25 is used to abut against the first connecting plate 15. A first connecting hole 151 is formed in the first connecting plate 15. The first connecting member 24 slidably passes through the first connecting hole 151, and a second connecting hole 251 for threaded connection of the first connecting member 24 is formed in the second connecting plate 25.

[0049] Refer to Figure 6 , the cross-section of the second choke fluid 22 is set as a sector, and a second choke groove 26 is formed in the second choke fluid 22. The outer arc radius of the second choke fluid 22 is b 2 , to ensure that the fan blade can rotate normally in the sector waveguide housing 11, it is necessary to satisfy b 2 < b, the inner arc radius is r, and the overall length of the second choke fluid 22 is h 1 , and the opening angle is w.

[0050] Refer to Figure 6 , as an implementation manner of the present application, the second choke groove 26 includes a second parallel groove 261 and a second vertical groove 262. The second parallel groove 261 is formed along the length direction of the second choke fluid 22. Both ends of the second parallel groove 261 penetrate through, and the length is h 1 , the width is e, and the depth is d 1 , and the number is n 1 pieces. Its distribution rule is: taking the place where one side of the second choke fluid 22 is flush with the e / 2 of the parallel groove as a reference, a groove structure is set at a vertical interval angle of w / (n 1 + 1).

[0051] Refer to Figure 6 , as an implementation manner of the present application, the second vertical groove 262 is formed along the direction perpendicular to the length direction of the second choke fluid 22. The second parallel groove 261 and the second vertical groove 262 are arranged in an intersecting and communicating manner, the width is e, and the depth is d 1 , and the number thereof is m 1 pieces. Its distribution rule is: the first vertical groove 412 is located at a distance of (h / m 1 – e) / 2 from one side of the sector cavity of the mechanical movable housing 21, and a groove structure is set at a parallel interval distance of h / m 1 .

[0052] Refer to Figure 7 、 8The motor drive module 3 is used to drive the rotating shaft 23 to rotate. As an embodiment of the present application, the motor drive module 3 includes a support body 31, a rotating motor 32 and a gear set 33. Two support bodies 31 are provided, and the two support bodies 31 are respectively provided on both sides of the mechanical movable housing 21. A through hole 34 for the rotating shaft 23 to pass through is provided on the support body 31. A second connecting member 35 is provided on the support body 31. The second connecting member 35 is used to connect the support body 31 with the mechanical movable housing 21. A card slot 36 is provided on the support body 31. The card slot 36 is adapted to the fan-shaped waveguide housing 11. The rotating motor 32 is fixedly provided on the support body 31. The output shaft of the rotating motor 32 is connected to the rotating shaft 23 through the gear set 33.

[0053] As an implementation manner of the present application, the second connecting member 35 is configured as a connecting bolt.

[0054] As an implementation method of this application, refer to Figure 7 , 8 The support body 31 is made of metal material and is a disc structure with a radius of R.

[0055] Reference Figure 7 , 8 The gear set 33 includes a driving gear 331 and a driven gear 332 . The driving gear 331 is coaxially fixed on the output shaft of the rotating motor 32 . The driven gear 332 is coaxially connected to the rotating shaft 23 . The driving gear 331 meshes with the driven gear 332 .

[0056] Reference Figure 4 , Figure 7 and Figure 8 The rotating shaft 23 includes a main shaft 231, a bearing shaft 232 and a gear shaft 233. The length of the main shaft 231 matches the length of the second choke body 22, and the length of the main shaft 231 is less than the length of the opening of the fan-shaped waveguide housing 11. A connecting bearing is sleeved on the bearing shaft 232, and the bearing shaft 232 and the connecting bearing are arranged in the through hole 34. The driven gear 332 is coaxially fixedly sleeved on the gear shaft 233.

[0057] Reference Figure 8 A receiving groove 5 is provided on one side of the fan-shaped waveguide housing 11, one end of the gear circular shaft 233 extends out of the fan-shaped waveguide housing 11 and is located in the receiving groove 5, and the driven gear 332 is rotatably disposed in the receiving groove 5, and the size of the receiving groove 5 is adapted to the driven gear 332.

[0058] Compared with the traditional high-power mechanical waveguide phase shifter structure, the present application integrates three modules into a cylindrical cavity, has the advantage of a highly compact structure, and the overall three-dimensional structure is simple without complex branches, which can effectively reduce the space required for multi-body cascading.

[0059] like Fig. 9 As shown, the phase shifter described in the present application can achieve 360° phase adjustment by rotating the rotating shaft 23 and the second choke body 22 by 45° (the specific range of the rotation angle g is -10° to 35°). It has a small range of motion and can achieve rapid phase adjustment when combined with a high-speed rotating motor 32 and a gear transmission structure, and can complete a 360° phase shift cycle within 20ms.

[0060] like Fig.10 As shown, in the range of 9.7 GHz-10 GHz, the return loss of the phase shifter described in this application is better than 20 dB.

[0061] like Fig.11 As shown, the insertion loss is better than 0.05dB, and it has good electromagnetic performance.

[0062] like Fig.12 As shown, electromagnetic resonance occurs in the scenario without a choke structure, and severe reflection occurs at certain frequencies, which reduces the performance of the phase shifter. By loading the choke structure (the first choke body 4 and the second choke body 22) described in this application, the potential electromagnetic resonance in the phase shifter can be effectively suppressed, and the insertion loss of the overall structure can be reduced.

[0063] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotary high-power mechanical phase shifter based on a fan-shaped waveguide, characterized in that: The invention comprises a waveguide transmission module (1), a mechanical activity module (2) and a motor drive module (3), wherein the waveguide transmission module (1) comprises a fan-shaped waveguide housing (11) and a shape conversion housing (12), wherein a first fan-shaped groove (13) is provided inside the fan-shaped waveguide housing (11), and first channels (14) are provided on both sides of the fan-shaped waveguide housing (11), a first connecting plate (15) is fixedly provided on a straight side of one side of the fan-shaped waveguide housing (11), and a first choke body (4) is fixedly provided on a straight side of the other side, and two shape conversion housings (12) are provided, and the two shape conversion housings (12) are respectively provided at two ends of the fan-shaped waveguide housing (11), and a second channel (16) is provided on a side of the shape conversion housing (12) close to the fan-shaped waveguide housing (11), and the first channel (14) and the second channel (16) are connected to each other; The mechanically movable module (2) comprises a mechanically movable housing (21), a second choke body (22) and a rotating shaft (23); the rotating shaft (23) is arranged in the fan-shaped waveguide housing (11) along the length direction of the fan-shaped waveguide housing (11); the second choke body (22) is arranged on the rotating shaft (23) along the length direction of the rotating shaft (23); a first connecting member (24) is arranged on the fan-shaped waveguide housing (11); the first connecting member (24) is used to connect the fan-shaped waveguide housing (11) and the mechanically movable housing (21); The motor drive module (3) is used to drive the rotating shaft (23) to rotate.

2. A rotary high-power mechanical phase shifter based on a fan-shaped waveguide according to claim 1, characterized in that: The cross section of the first choke body (4) is arranged to be fan-shaped, the length of the first choke body (4) is adapted to the internal length of the mechanical movable housing (21), and a first choke groove (41) is provided on the first choke body (4).

3. A rotary high-power mechanical phase shifter based on a fan-shaped waveguide according to claim 2, characterized in that: The first choke slot (41) comprises a first parallel slot (411) and a plurality of first vertical slots (412), wherein the first parallel slot (411) is opened along the length direction of the first choke body (4), both ends of the first parallel slot (411) are through-set, the first vertical slot (412) is opened along a length direction perpendicular to the first choke body (4), the first vertical slot (412) and the first parallel slot (411) are interconnected, and the plurality of first vertical slots (412) are evenly distributed along the length direction of the first choke body (4).

4. The rotary high-power mechanical phase shifter based on fan-shaped waveguide according to claim 1, characterized in that: The first connecting member (24) is configured as a first connecting bolt, and a second connecting plate (25) is fixedly arranged on one side of the mechanical movable housing (21) along the length direction of the mechanical movable housing (21), and the side wall of the second connecting plate (25) is used to abut against the first connecting plate (15), and a first connecting hole (151) is provided on the first connecting plate (15), and the first connecting member (24) is slidably inserted into the first connecting hole (151), and a second connecting hole (251) for threaded connection of the first connecting member (24) is provided on the second connecting plate (25).

5. The rotary high-power mechanical phase shifter based on fan-shaped waveguide according to claim 1, characterized in that: The cross section of the second choke body (22) is arranged to be fan-shaped, the outer arc radius of the second choke body (22) is smaller than the inner arc radius of the fan-shaped waveguide housing (11), and a second choke groove (26) is provided on the second choke body (22).

6. The rotary high-power mechanical phase shifter based on fan-shaped waveguide according to claim 5, characterized in that: The second choke slot (26) comprises a second parallel slot (261) and a second vertical slot (262), wherein the second parallel slot (261) is opened along the length direction of the second choke body (22), and both ends of the second parallel slot (261) are arranged through, and the second vertical slot (262) is opened along the length direction perpendicular to the second choke body (22), a plurality of the second parallel slots (261) are evenly opened along the arc surface of the second choke body (22), a plurality of the second vertical slots (262) are evenly arranged along the length direction of the second choke body (22), and the second parallel slots (261) and the second vertical slots (262) are arranged to be interlaced and connected with each other.

7. The rotary high-power mechanical phase shifter based on fan-shaped waveguide according to claim 5, characterized in that: The motor drive module (3) comprises a support body (31), a rotating motor (32) and a gear set (33). Two support bodies (31) are provided, and the two support bodies (31) are respectively arranged on both sides of the mechanical movable housing (21). A through hole (34) for the rotating shaft (23) to pass through is provided on the support body (31). A second connecting member (35) is provided on the support body (31), and the second connecting member (35) is used to connect the support body (31) and the mechanical movable housing (21). A slot (36) is provided on the support body (31), and the slot (36) is adapted to the fan-shaped waveguide housing (11). The rotating motor (32) is fixedly arranged on the support body (31), and the output shaft of the rotating motor (32) is transmission-connected to the rotating shaft (23) through the gear set (33).

8. The rotary high-power mechanical phase shifter based on fan-shaped waveguide according to claim 7, characterized in that: The gear set (33) comprises a driving gear (331) and a driven gear (332); the driving gear (331) is coaxially fixedly arranged on the output shaft of the rotating motor (32); the driven gear (332) is coaxially connected to the rotating shaft (23); and the driving gear (331) is meshed with the driven gear (332).

9. The rotary high-power mechanical phase shifter based on fan-shaped waveguide according to claim 8, characterized in that: The rotating shaft (23) comprises a main shaft (231), a bearing shaft (232) and a gear shaft (233). The length of the main shaft (231) matches the length of the second choke body (22). The length of the main shaft (231) is smaller than the length of the opening of the fan-shaped waveguide housing (11). A connecting bearing is sleeved on the bearing shaft (232). The bearing shaft (232) and the connecting bearing are rotatably arranged in the through hole (34). The driven gear (332) is coaxially fixedly sleeved on the gear shaft (233).

10. The rotary high-power mechanical phase shifter based on fan-shaped waveguide according to claim 8, characterized in that: A receiving groove (5) is provided on one side of the fan-shaped waveguide housing (11); one end of the gear shaft (233) extends out of the fan-shaped waveguide housing (11) and is located in the receiving groove (5); the driven gear (332) is rotatably disposed in the receiving groove (5); and the size of the receiving groove (5) is adapted to that of the driven gear (332).

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