Waveguide, waveguide assembly and accelerator system

Abstract

The present invention relates to the field of microwave device technology, and in particular to a waveguide, a waveguide assembly, and an accelerator system, wherein the waveguide comprises: a first waveguide tube; a second waveguide tube, wherein the second waveguide tube comprises a first end and a second end, wherein the first end of the second waveguide tube is slidably connected to one end of the first waveguide tube; a third waveguide tube, wherein the second end of the second waveguide tube is rotationally connected to one end of the third waveguide tube; a first choke structure, which is arranged at the intersection of the first waveguide tube and the second waveguide tube; and a second choke structure, which is arranged at the intersection of the second waveguide tube and the third waveguide tube. Through the above-mentioned method, the waveguide is enabled to achieve two degrees of freedom of movement, thereby improving the flexibility of the microwave system. In addition, for the waveguide assembly, the first coupling end of one waveguide is connected to the second coupling end of another waveguide, so that the waveguide assembly can achieve at least four degrees of freedom of movement.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of microwave devices, and in particular, to a waveguide, a waveguide assembly, and an accelerator system. Background Art

[0002] Microwave devices operate in the microwave band (frequencies between 300 and 300,000 MHz). For example, waveguides are microwave devices used to guide microwave-frequency electromagnetic waves. Through circuit design, these devices can be combined into various microwave circuits with specific functions. For example, these devices can be assembled into transmitters, receivers, antenna systems, displays, and other electronic equipment for radar, electronic warfare systems, and communications systems.

[0003] During the implementation of the present invention, the inventors discovered that existing microwave devices are stationary relative to the power source. For example, in an acceleration system, after the microwave device and the accelerating tube are installed, the relative position of the two cannot be changed. Even a movable rotating waveguide can only achieve rotational motion with one degree of freedom, and its flexibility is low. Summary of the Invention

[0004] In view of the above-mentioned defects of the prior art, the main purpose of the present invention is to provide a waveguide, a waveguide assembly and an accelerator system, which can realize two-degree-of-freedom movement of the waveguide to improve the flexibility of the microwave system.

[0005] In order to solve the above technical problems, a technical solution adopted in an embodiment of the present invention is: providing a waveguide, including: a first waveguide tube; a second waveguide tube, the second waveguide tube includes a first end and a second end, the first end of the second waveguide tube is slidingly connected to one end of the first waveguide tube; a third waveguide tube, the second end of the second waveguide tube is rotationally connected to one end of the third waveguide tube; a first choke structure is arranged at the intersection of the first waveguide tube and the second waveguide tube; and a second choke structure is arranged at the intersection of the second waveguide tube and the third waveguide tube.

[0006] Optionally, the first choke structure is used to achieve short-circuit transfer to prevent microwave leakage at the connection between the first waveguide tube and the second waveguide tube during transmission; the second choke structure is used to achieve short-circuit transfer to prevent microwave leakage at the connection between the second waveguide tube and the third waveguide tube during transmission.

[0007] Optionally, one end of the first waveguide tube extends into the first end of the second waveguide tube, the first choke structure is arranged on the outer peripheral wall of the first waveguide tube, and the number of the first choke structure is at least one.

[0008] Optionally, one end of the first waveguide tube extends into the first end of the second waveguide tube, the first choke structure is arranged on the inner wall of the second waveguide tube, and the number of the first choke structure is at least one.

[0009] Optionally, one end of the first waveguide tube extends into the first end of the second waveguide tube, the number of the first choke structures is at least two, the outer peripheral wall of the first waveguide tube is provided with at least one first choke structure, and the inner peripheral wall of the second waveguide tube is provided with at least one first choke structure.

[0010] Optionally, the first choke structure arranged on the first waveguide tube includes a first choke slot and a second choke slot; the first choke slot is arranged on the outer peripheral wall of the first waveguide tube and surrounds the first waveguide tube; the second choke slot is arranged between the inner peripheral wall and the outer peripheral wall of the first waveguide tube and surrounds the first waveguide tube.

[0011] Optionally, the port diameter of the one end of the first waveguide tube changes in a step-like manner.

[0012] Optionally, one end of the first waveguide tube is sleeved outside the first end of the second waveguide tube, the first choke structure is arranged on the inner wall of the first waveguide tube, and the number of the first choke structure is at least one.

[0013] Optionally, one end of the first waveguide tube is sleeved outside the first end of the second waveguide tube, the first choke structure is arranged on the outer peripheral wall of the second waveguide tube, and the number of the first choke structure is at least one.

[0014] Optionally, one end of the first waveguide tube is sleeved on the first end of the second waveguide tube, the number of the first choke structures is at least two, the inner circumferential wall of the first waveguide tube is provided with at least one first choke structure, and the outer circumferential wall of the second waveguide tube is provided with at least one first choke structure.

[0015] Optionally, the first choke structure arranged on the first waveguide tube includes a first choke slot and a second choke slot; the first choke slot is arranged on the inner circumferential wall of the first waveguide tube and surrounds the first waveguide tube; the second choke slot is arranged between the inner circumferential wall and the outer circumferential wall of the first waveguide tube and surrounds the first waveguide tube.

[0016] Optionally, the second choke structure includes a third choke slot and a fourth choke slot; the third choke slot is arranged on the inner circumferential wall of the second waveguide tube and surrounds the second waveguide tube; the fourth choke slot is arranged between the inner circumferential surface and the outer circumferential wall of the second waveguide tube and surrounds the second waveguide tube.

[0017] To solve the above technical problems, another technical solution provided by an embodiment of the present invention is: providing a waveguide assembly, including at least two of the above-mentioned waveguides, wherein a first coupler and a second coupler are respectively provided at the two ends of each waveguide, the first coupler being used for microwave input and the second coupler being used for microwave output; the second coupler of one waveguide is connected to the first coupler of another waveguide, so that the waveguide assembly can achieve at least four degrees of freedom of movement.

[0018] To solve the above technical problems, another technical solution provided by an embodiment of the present invention is: an accelerator system is provided, comprising an accelerating tube, a microwave generator, and the above-mentioned waveguide assembly, wherein a first coupler of the waveguide assembly not connected to other waveguides is connected to the microwave generator, and a second coupler of the waveguide assembly not connected to other waveguides is connected to the accelerating tube.

[0019] To solve the above technical problems, another technical solution provided by an embodiment of the present invention is: providing another waveguide assembly, comprising the three waveguides described above, namely, a first waveguide, a second waveguide, and a third waveguide; a first coupler and a second coupler are respectively provided at two ends of each waveguide, the first coupler being used for microwave input and the second coupler being used for microwave output;

[0020] The second coupler of the first waveguide is connected to the first coupler of the second waveguide, and the second coupler of the second waveguide is connected to the first coupler of the third waveguide, so that the waveguide assembly can achieve 6 degrees of freedom movement.

[0021] The beneficial effects of embodiments of the present invention include: one end of a first waveguide is slidably connected to the first end of a second waveguide, allowing the first and second waveguides to extend and retract in length; a first choke structure is provided at the junction of the first and second waveguides to prevent microwave leakage through the gap at the junction during microwave transmission; a second end of the second waveguide is rotatably connected to one end of a third waveguide, allowing relative rotation between the first and second waveguides; and a second choke structure is provided at the junction of the second and third waveguides to prevent microwave leakage through the gap at the junction during microwave transmission. This enables the waveguide to achieve two degrees of freedom, improving its flexibility. Furthermore, the waveguide is provided with a first coupler and a second coupler, wherein the first coupler has a first coupling end and the second coupler has a second coupling end. The first coupling end of one waveguide is connected to the second coupling end of another waveguide to form a waveguide assembly having at least four degrees of freedom, improving its flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0023] Figure 1 is an exploded view of an embodiment of a waveguide of the present invention;

[0024] Figure 2 is an assembly diagram of an embodiment of a waveguide of the present invention;

[0025] Figure 3 is a front view of an embodiment of a waveguide of the present invention;

[0026] Figure 4 is a cross-sectional view of an embodiment of a waveguide according to the present invention taken along line A-A;

[0027] Figure 5 is a perspective view of a connector of a waveguide embodiment of the present invention;

[0028] Figure 6 is a schematic diagram of the first choke structure of a waveguide embodiment of the present invention;

[0029] Figure 7 is a schematic diagram of the second choke structure of the waveguide embodiment of the present invention;

[0030] Figure 8 It is an assembly diagram of a multi-degree-of-freedom waveguide embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0032] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0033] In the description of this application, it should be understood that the terms "length", "inside", "outside", "axial", "radial", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0034] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the present invention, "plurality" means more than two, unless otherwise specifically defined.

[0035] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0036] See also Figures 1 to 7 The waveguide 100 includes a first coupler 10, a first waveguide tube 20, a second waveguide tube 30, a first choke structure 40, a third waveguide tube 50, a second choke structure 60, a second coupler 70, and a connector 80. The first coupler 10 is connected to one end of the first waveguide tube 20, the other end of the first waveguide tube 20 is sleeved to one end of the second waveguide tube 30, and the other end of the second waveguide tube 30 is connected to the second coupler 70.

[0037] The first coupler 10 is provided with a first connection port 11 and a first coupling end 12 , and microwaves enter the first coupler 10 from the first coupling end 12 .

[0038] The first waveguide 20 is a hollow circular tube. The first waveguide 20 includes a first movable end 21 and a first fixed end 22. The first fixed end 22 of the first waveguide 20 is connected to the first connection port 11, and the first waveguide 20 and the first coupler 10 are fixed by welding. Of course, the first waveguide 20 and the first coupler 10 can also be integrally formed.

[0039] The above-mentioned second waveguide tube 30 is a hollow circular tube, including a first end 31 and a second end 32. The first end 31 of the second waveguide tube 30 is sleeved with the first movable end 21 of the first waveguide tube 20, and the first waveguide tube 20 and the second waveguide tube 30 are fitted with a gap so that the second waveguide tube 30 can slide relative to the axial direction of the first waveguide tube 20 and has the freedom of linear motion. In addition, the length between the second waveguide tube 30 and the first waveguide tube 20 can be changed by axial sliding. The first choke structure 40 is arranged at the intersection of the first end 31 of the first waveguide tube 20 and the first movable end 21 of the second waveguide tube 30. The first wave choke structure is used to realize the transfer of the short-circuit road surface to prevent the microwave from leaking out of the gap at the intersection of the first waveguide tube 20 and the second waveguide tube 30 when the microwave is transmitted in the first waveguide tube 20 and the second waveguide tube 30.

[0040] The third waveguide tube 50 is a hollow tubular structure comprising a second fixed end 51 and a second movable end 52. The second movable end 52 of the third waveguide tube 50 is sheathed with the second end 32 of the second waveguide tube 30, and a clearance is provided between the second waveguide tube 30 and the third waveguide tube 50, allowing the third waveguide tube 50 to rotate relative to the second waveguide tube 30, thereby providing rotational freedom. A second choke structure 60 is provided at the junction of the second movable end 52 of the third waveguide tube 50 and the second end 32 of the second waveguide tube 30, and is used to achieve short-circuit transfer, preventing microwaves from leaking out of the gap at the junction of the second movable end 52 of the third waveguide tube 50 and the second end 32 of the second waveguide tube 30 during transmission through the third waveguide tube 50 and the second waveguide tube 30.

[0041] It should be noted that the first waveguide tube 20, the second waveguide tube 30 and the third waveguide tube 50 are coaxially arranged, and the materials used are all metal materials, such as copper metal or aluminum metal, etc., to avoid external magnetic fields or electric fields from interfering with microwaves transmitted in the waveguide 100.

[0042] The second coupler 70 has a second connecting end 71 and a second coupling end 72. The second connecting end 71 of the second coupler 70 is connected to the second fixing end 51 of the third waveguide 50, and the third waveguide 50 and the second coupler 70 are fixed together by welding. Of course, the third waveguide 50 and the second coupler 70 can also be integrated as a single unit. The first coupling end 12 of the first coupler 10 and the second coupling end 72 of the second coupler 70 have the same structure and are assembled and coupled to each other. Microwaves are output from the second coupling end 72.

[0043] It should be noted that the first coupler 10 and the second coupler 70 are used to convert the TM01 mode and the TE10 mode of the microwaves, ensuring uniform angular distribution of the TM01 mode or the TE10 mode within the microwave waveguide. The first waveguide 20, the second waveguide 30, and the third waveguide 50 are made of metal, such as copper or alloy steel, to prevent external electric or magnetic fields from interfering with the microwaves propagating within the waveguide 100. The first coupling end 12 is connected to a microwave generator, and the second coupling end 72 is connected to an accelerating tube. Of course, in some other embodiments, the second coupling end 72 is connected to the microwave generator. Microwaves from the microwave generator enter the second coupler 70 through the second coupling end 72, are then transmitted through the waveguide, and are ultimately output from the first coupling end 12. The first coupling end 12 is then connected to the accelerating tube, where the microwaves are then transmitted to the accelerating tube via the first coupling end 12. As shown in the figure, the connector 80 is provided with a first through hole 81 and a plurality of first connection holes 82, with the plurality of first connection holes arranged around the first through hole 81. There are two connectors 80. The first waveguide 20, the second waveguide 30, or the third waveguide 50 can extend into the first connecting hole, thereby connecting the first waveguide 20, the second waveguide 30, and the third waveguide 50 to the connector 80. The connector 80 is fixedly connected to the other waveguides through the first connecting hole, thereby providing support for the waveguides. It will be appreciated that in some embodiments, there may be one or more connectors 80.

[0044] For the first choke structure 40, as Figure 1 、 Figure 4 and Figure 6 The number is at least one.

[0045] When the first waveguide tube 20 is inserted into the second waveguide tube 30, at least one first choke structure 40 can be arranged on the outer peripheral wall of the first waveguide tube 20, or at least one first choke structure 40 can be arranged on the inner peripheral wall of the second waveguide tube 30; or, the number of first choke structures 40 is at least two, and at least one first choke structure 40 is provided on the outer peripheral wall of the first waveguide tube 20, and at least one first choke structure 40 is provided on the inner peripheral wall of the second waveguide tube 30.

[0046] Specifically, in some embodiments, the first choke structure 40 includes a first choke slot 41 and a second choke slot 42. One end of the second choke slot 42 is connected to the first choke slot 41, and a sidewall of the second choke slot 42 is flush with the bottom of the first choke slot 41.

[0047] When the first choke structure 40 is arranged in the first waveguide tube 20, the first choke groove 41 is arranged on the outer peripheral wall of the first waveguide tube 20 and surrounds the first waveguide tube 20, and the second choke groove 42 is arranged between the inner peripheral wall and the outer peripheral wall of the first waveguide tube 20 and surrounds the first waveguide tube 20.

[0048] When the first choke structure 40 is arranged in the second waveguide tube 30, the first choke groove 41 is arranged on the inner circumferential wall of the second waveguide tube 30 and surrounds the second waveguide tube 30, and the second choke groove 42 is arranged between the inner circumferential wall and the outer circumferential wall of the second waveguide tube 30 and surrounds the second waveguide tube 30.

[0049] It is worth noting that, in order to improve the technical effect of the first choke structure 40 in preventing microwave leakage, when the first choke structure 40 is disposed in the first waveguide tube 20, the first choke structure 40 may also satisfy the following calculation formula:

[0050]

[0051] When the first choke structure 40 is disposed in the first waveguide tube 20, L1 is the distance from the end face of the first movable end 22 to the opening of the first choke slot 41, and L1 corresponds to the microwave wavelength λ1. The distance between the opening of the first choke slot 41 and the opening of the second choke slot 42 is L2, and L2 corresponds to the microwave wavelength λ2. The distance between the opening of the second choke slot 42 and the bottom of the second choke slot 42 is L3, and L3 corresponds to the microwave wavelength λ3, where n is a natural number. It is understood that in other embodiments, the first choke structure 40 can also be a choke structure that can achieve short-circuit transfer when the waveguide 100 transmits microwaves, preventing the microwave transmission from leaking at the connection between the first waveguide tube 20 and the second waveguide tube 30.

[0052] Furthermore, to ensure that microwaves are always in a matched transmission state when traveling through waveguides of different diameters, the inner wall diameter of the first movable end of the first waveguide 20 changes in a stepwise manner from small to large toward the second waveguide 30. This stepwise structure allows microwaves to offset reflections during transmission, thus achieving a matched transmission state.

[0053] It should be noted that, in some embodiments, the first choke structure 40 may be composed of several segments, and the projections of these segments on the cross-section of the first waveguide 20 or the second waveguide 30 are closed rings. These segments may be all disposed on the inner circumferential wall of the first waveguide 20, or all disposed on the outer circumferential wall of the second waveguide 30, or these segments may be partially disposed on the inner circumferential wall of the first waveguide 20 and partially disposed on the outer circumferential wall of the second waveguide 30.

[0054] When the first waveguide tube 20 is arranged outside the second waveguide tube 30, the at least one first choke structure 40 can be arranged on the inner peripheral wall of the first waveguide tube 20, or, at least one first choke structure 40 can be arranged on the outer peripheral wall of the second waveguide tube 30; or, the number of the first choke structures 40 is at least two, and at least one first choke structure 40 is provided on the inner peripheral wall of the first waveguide tube 20, and at least one first choke structure 40 is provided on the outer peripheral wall of the second waveguide tube 30.

[0055] Specifically, when the first choke structure 40 is arranged in the first waveguide tube 20, the first choke groove 41 is arranged on the inner circumferential wall of the first waveguide tube 20 and surrounds the first waveguide tube 20, and the second choke groove 42 is arranged between the inner circumferential wall and the outer circumferential wall of the first waveguide tube 20 and surrounds the first waveguide tube 20.

[0056] When the first choke structure 40 is arranged in the second waveguide tube 30, the first choke groove 41 is arranged on the outer peripheral wall of the second waveguide tube 30 and surrounds the second waveguide tube 30, and the second choke groove 42 is arranged between the inner peripheral wall and the outer peripheral wall of the second waveguide tube 30 and surrounds the second waveguide tube 30.

[0057] In this case, when the first choke structure 40 is composed of multiple segments, the projections of these segments on the cross-section of the first waveguide 20 or the second waveguide 30 are closed rings. Of course, these segments can all be disposed on the inner circumferential wall of the first waveguide 20, or all on the outer circumferential wall of the second waveguide 30, or these segments can be partially disposed on the inner circumferential wall of the first waveguide 20 and partially on the outer circumferential wall of the second waveguide 30.

[0058] At this time, the diameter of the first end 31 of the second waveguide tube 30 changes from small to large in a step-by-step manner toward the first waveguide tube 20 .

[0059] For the second choke structure 60, as Figure 1 、 Figure 4 and Figure 7 As shown, the second choke structure 60 includes a third choke slot 61 and a fourth choke slot 62, which are arranged on the inner wall surface of the second waveguide tube 30 and surround the second waveguide tube 30. The fourth choke slot 62 is arranged between the outer wall surface and the inner wall surface of the second waveguide tube 30, and the third choke slot 61 and the fourth choke slot 62 are connected to each other.

[0060] It is worth noting that, in order to improve the technical effect of the second choke structure 60 in preventing microwave leakage, when the second choke structure 60 is provided in the second waveguide tube 30, the first choke structure 40 may also satisfy the following calculation formula:

[0061] Wherein, n is a natural number, L4 is the distance from the end face of the second end 32 to the bottom of the fourth choke slot 62, and the microwave wavelength corresponding to L4 is λ4, L5 is the distance between the opening of the third choke slot 61 and the opening of the fourth choke slot 62, and the microwave wavelength corresponding to L5 is λ5.

[0062] In order to further improve the matching degree of microwave transmission between waveguides with different calibers, the caliber of one end of the third waveguide 50 changes in a step-by-step manner, so that the microwaves are always in a matching transmission state between the waveguides 100.

[0063] In the embodiment of the present invention, the first connection end of the first coupler 10 is connected to the first fixed tube of the first waveguide tube 20, and the first movable end 21 of the first waveguide tube 20 is slidably connected to the first end 31 of the second waveguide tube 30, so that the first waveguide tube 20 can slide relative to the second waveguide tube 30, has the freedom of linear motion, and the length between the two can be changed by telescoping; the second end 32 of the second waveguide tube 30 is rotatably connected to the third waveguide tube 50, so that the second waveguide tube 30 can rotate relative to the third waveguide tube 50, has the freedom of rotation; the first choke structure 40 is provided at the intersection of the first waveguide tube 20 and the second waveguide tube 30 to prevent microwaves from being transmitted. The gap at the intersection of the first waveguide 20 and the second waveguide 30 is designed to prevent microwaves from leaking out of the gap. The second waveguide 30 is positioned at the intersection of the second waveguide 30 and the third waveguide 50, preventing microwaves from leaking out of the gap at the intersection during transmission. The inner wall of the second fixed end 51 of the third waveguide has a stepped diameter, as does the diameter of one end of the first waveguide 20 or one end of the second waveguide 30. This stepped diameter variation allows microwave reflections to be offset by superposition when transmitting through waveguides of different diameters, resulting in a consistently matched transmission state. This allows microwaves to achieve two degrees of freedom without changing their transmission state within the waveguide 100, improving its flexibility.

[0064] See also Figure 8, an embodiment of the present invention also provides another waveguide 100 that realizes dual degrees of freedom. The waveguide 100 includes: a telescopic waveguide and a rotating waveguide. The telescopic waveguide includes: a first waveguide tube 20, a second waveguide tube 30, a first coupler 10, a second coupler 70, a first choke structure 40 and a connector 80. Different from the above embodiment, the second end 32 of the second waveguide tube 30 is connected to the second connection end 71 of the second coupler 70, and is fixed by welding or integrally formed as a whole. The functions and structures of the remaining components can refer to the above embodiment and are not described in detail here. The rotating waveguide includes: a first coupler 10, a second waveguide tube 30, a third waveguide tube 50, a second coupler 70, a second choke structure 60 and a connector 80. The difference from the above embodiment is that the first connection end of the first coupler 10 is connected to the first end 31 of the second waveguide tube 30, and is fixed by welding or integrally formed as a whole. The functions and structures of the remaining components can refer to the above embodiment and are not described in detail here. The first coupler 10 of the telescopic waveguide is connected to the first coupler or second coupler 70 of the rotating waveguide, or the second coupler 70 of the telescopic waveguide is connected to the first coupler or second coupler 70 of the rotating waveguide, thereby forming a waveguide 100 having two degrees of freedom: rotation and telescopic. It should be noted that when there are multiple rotating waveguides and telescopic waveguides, a waveguide 100 having multiple degrees of freedom can be formed.

[0065] The present invention also provides an embodiment of a waveguide component that realizes 4 degrees of freedom, such as Figure 8 As shown, the waveguide assembly includes two waveguides 100, each with a first coupler 10 and a second coupler 70 at its ends. The first coupler 10 is used for microwave input, and the second coupler 70 is used for microwave output. The second coupler of one waveguide is connected to the first coupler of the other waveguide, enabling the waveguide assembly to achieve four degrees of freedom.

[0066] Two waveguides 100 can be connected to form a waveguide assembly with four degrees of freedom, and three waveguides 100 can be connected to form a waveguide assembly with six degrees of freedom. In an embodiment of a waveguide assembly with six degrees of freedom, the waveguide assembly includes a first waveguide, a second waveguide, and a third waveguide. A first coupler and a second coupler are respectively provided at the two ends of each waveguide. The first coupler is used for microwave input, and the second coupler is used for microwave output. The second coupler of the first waveguide is connected to the first coupler of the second waveguide, and the second coupler of the second waveguide is connected to the first coupler of the third waveguide.

[0067] It is understood that the number of waveguides 100 is not limited to the three or four described above, but may be multiple, thereby forming a waveguide assembly with multiple degrees of freedom. The structure and function of the waveguide 100 are the same as those of the waveguide 100 in the above embodiment, and will not be described in detail here. Through the embodiments of the present invention, multi-degree-of-freedom motion of the waveguide assembly is achieved.

[0068] In some embodiments, the waveguide 100 that realizes multiple degrees of freedom is not limited to the above-mentioned method. For example, a waveguide is added between the first waveguide 20 and the second waveguide 30, with one end of the waveguide being slidably connected to the first movable end 21 of the first waveguide 20 and the other end being slidably connected to the first end 31 of the second waveguide 30; another waveguide is added between the third waveguide 50 and the second waveguide 30, with one end of the waveguide being rotatably connected to the second end 32 of the second waveguide 30 and the other end being rotatably connected to the second movable end 52 of the third waveguide 50. Of course, the waveguide added between the first waveguide 20 and the second waveguide 30 can be connected to the first waveguide 20 and the second waveguide 30 in a rotatable manner at one end and a slidable manner at the other end. The waveguide added between the second waveguide 30 and the third waveguide 50 can be connected to the second waveguide 30 and the third waveguide 50 in a rotatable manner at one end and a slidable manner at the other end. It can be understood that the number of additional waveguide tubes can be one or more, and a first choke structure 40 is provided at the intersection between the two relatively slidable waveguide tubes, and a second choke structure 60 is provided at the intersection between the two relatively rotatable waveguide tubes. The structure and function of the first choke structure 40 and the second choke structure 60 are the same as those in the above embodiment. The installation positions of the first choke structure 40 and the second choke structure 60 can refer to the above embodiment and will not be repeated here.

[0069] The present invention further provides an accelerator system embodiment, which includes a waveguide assembly, an accelerating tube, and a microwave accelerator. The first coupling end 12 is connected to the microwave generator, and the second coupling end 72 is connected to the accelerating tube. The structure and function of the waveguide assembly are the same as those in the above embodiment, and will not be described in detail here.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A waveguide, characterized in that include: First waveguide; a second waveguide tube, the second waveguide tube comprising a first end and a second end, the first end of the second waveguide tube being slidably connected to one end of the first waveguide tube; a third waveguide tube, wherein the second end of the second waveguide tube is rotatably connected to one end of the third waveguide tube; A first choke structure is provided at the junction of the first waveguide tube and the second waveguide tube. The first choke structure is provided on the first waveguide tube or the first choke structure is provided on the second waveguide tube. The first choke structure includes: a first choke slot and a second choke slot. One end of the second choke slot is connected to the first choke slot, and a side wall of the second choke slot is flush with the slot bottom of the first choke slot. When the first choke structure is provided on the first waveguide tube, the calculation formula of the first choke structure is: Wherein, L1 is the distance from the end surface of the first movable end to the opening of the first choke slot, L1 corresponds to a microwave wavelength λ1, the distance between the opening of the first choke slot and the opening of the second choke slot is L2, and L2 corresponds to a microwave wavelength λ2, the distance between the opening of the second choke slot and the bottom of the second choke slot is L3, and L3 corresponds to a microwave wavelength λ3, and n is a natural number; The second choke structure is arranged at the intersection of the second waveguide tube and the third waveguide tube.

2. The waveguide according to claim 1, wherein The first choke structure is used to achieve short-circuit transfer to prevent microwave leakage at the connection between the first waveguide and the second waveguide during transmission; The second choke structure is used to achieve short-circuit transfer and prevent microwave leakage at the connection between the second waveguide tube and the third waveguide tube during transmission.

3. The waveguide according to claim 2, wherein One end of the first waveguide tube extends into the first end of the second waveguide tube, the first choke structure is arranged on the outer peripheral wall of the first waveguide tube, and the number of the first choke structure is at least one.

4. The waveguide according to claim 2, wherein One end of the first waveguide tube extends into the first end of the second waveguide tube, the first choke structure is arranged on the inner circumferential wall of the second waveguide tube, and the number of the first choke structure is at least one.

5. The waveguide according to claim 2, wherein One end of the first waveguide tube extends into the first end of the second waveguide tube, the number of the first choke structures is at least two, the outer peripheral wall of the first waveguide tube is provided with at least one first choke structure, and the inner peripheral wall of the second waveguide tube is provided with at least one first choke structure.

6. The waveguide according to claim 3 or 5, characterized in that The first choke groove is provided on the outer peripheral wall of the first waveguide tube and surrounds the first waveguide tube; The second choke groove is disposed between the inner peripheral wall and the outer peripheral wall of the first waveguide tube and surrounds the first waveguide tube.

7. The waveguide according to claim 1, wherein The port diameter of the one end of the first waveguide tube changes in a step-like manner.

8. The waveguide according to claim 2, wherein One end of the first waveguide tube is sleeved on the first end of the second waveguide tube, the first choke structure is arranged on the inner wall of the first waveguide tube, and the number of the first choke structure is at least one.

9. The waveguide according to claim 2, wherein One end of the first waveguide tube is sleeved outside the first end of the second waveguide tube, the first choke structure is arranged on the outer peripheral wall of the second waveguide tube, and the number of the first choke structure is at least one.

10. The waveguide according to claim 2, wherein One end of the first waveguide tube is sleeved on the first end of the second waveguide tube, the number of the first choke structures is at least two, the inner circumferential wall of the first waveguide tube is provided with at least one first choke structure, and the outer circumferential wall of the second waveguide tube is provided with at least one first choke structure.

11. The waveguide according to claim 8, wherein The first choke groove is arranged on the inner peripheral wall of the first waveguide tube and surrounds the first waveguide tube.

12. The waveguide according to claim 2, wherein The second choke structure includes a third choke slot and a fourth choke slot; The third choke slot is provided on the inner peripheral wall of the second waveguide tube and surrounds the second waveguide tube; The fourth choke slot is arranged between the inner circumferential surface and the outer circumferential wall of the second waveguide tube and surrounds the second waveguide tube.

13. A waveguide component, characterized in that: Comprising at least two waveguides according to any one of claims 1 to 12, a first coupler and a second coupler are respectively provided at two ends of each waveguide, the first coupler is used for inputting microwaves, and the second coupler is used for outputting microwaves; The second coupler of one waveguide of the at least two waveguides is connected to the first coupler of the other waveguide, so that the waveguide assembly can achieve at least four degrees of freedom.

14. An accelerator system, characterized in that: The invention comprises the waveguide assembly, the accelerating tube and the microwave generator according to claim 13, wherein the first coupler of the waveguide assembly not connected to other waveguides is connected to the microwave generator, and the second coupler of the waveguide assembly not connected to other waveguides is connected to the accelerating tube.

15. A waveguide component, characterized in that The invention comprises three waveguides according to any one of claims 1 to 12, namely a first waveguide, a second waveguide and a third waveguide; a first coupler and a second coupler are respectively provided at two ends of each waveguide, the first coupler is used for inputting microwaves, and the second coupler is used for outputting microwaves; The second coupler of the first waveguide is connected to the first coupler of the second waveguide, and the second coupler of the second waveguide is connected to the first coupler of the third waveguide, so that the waveguide assembly can achieve 6 degrees of freedom.

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