Tuning component, filter and tuning method

Abstract

The application relates to the technical field of communication, and provides a tuning assembly, a filter and a tuning method. The tuning assembly is used for adjusting a resonant frequency of the filter. The filter comprises a cavity and a cover plate. The cavity or the cover plate has a deformation area. The tuning assembly comprises: a first tuning structure, which is used for applying force to a first part of the deformation area so that the deformation area is deformed; and a second tuning structure, which is capable of moving relative to the first tuning structure. The second tuning structure is used for applying force to a second part of the deformation area so that the deformation area is deformed. The position of the second part is different from that of the first part. The tuning assembly provided by the application can improve the control degree of the deformation amount of the deformation area, and thus the accuracy of adjusting the resonant frequency is improved.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a tuning component, filter, and tuning method. Background Technology

[0002] In related technologies, there are schemes that adjust the resonant frequency by deforming the cover plate of the filter.

[0003] In the process of creating the technical solution of this application, the inventors discovered that it is difficult to control the deformation of the cover plate during the deformation process, which makes it difficult to accurately adjust to the required resonant frequency. Summary of the Invention

[0004] The purpose of this application is to provide a tuning component, filter, and tuning method to improve the technical problem in the related art where it is difficult to control the deformation of the cover plate, resulting in difficulty in accurately adjusting to the required resonant frequency.

[0005] To achieve the above objectives, a first aspect of this application provides a tuning assembly for adjusting the resonant frequency of a filter, the filter including a cavity and a cover plate, the cavity or the cover plate having a deformable region, the tuning assembly including: a first tuning structure for applying force to a first portion of the deformable region to cause deformation of the deformable region; and a second tuning structure movable relative to the first tuning structure; the second tuning structure for applying force to a second portion of the deformable region to cause deformation of the deformable region; wherein the position of the second portion is different from the position of the first portion.

[0006] In one embodiment, the tuning assembly further includes a fixing structure, wherein the first tuning structure is movably disposed on the fixing structure.

[0007] In one embodiment, the fixing structure has a first through hole, through which the first tuning structure passes.

[0008] In one embodiment, the inner wall of the first through hole is provided with an internal thread, and the outer wall of the first tuning structure is provided with an external thread, wherein the external thread and the internal thread are threadedly engaged.

[0009] In one embodiment, the first tuning structure is provided with an auxiliary turning structure.

[0010] In one embodiment, the fixing structure is provided with a mounting part, which is used for mounting the fixing structure onto the cavity or the cover plate.

[0011] In one embodiment, the second tuning structure is movably disposed on the first tuning structure.

[0012] In one embodiment, the first tuning structure has a second through hole, and the second tuning structure passes through the second through hole.

[0013] In one embodiment, the inner wall of the second through hole is provided with at least one limiting portion, and the outer wall of the second tuning structure is uniformly provided with a plurality of limiting mating portions; or, the inner wall of the second through hole is uniformly provided with a plurality of limiting portions, and the outer wall of the second tuning structure is provided with at least one limiting mating portion; the limiting portion and the limiting mating portion are mutually limiting and mating to restrict the second tuning structure from rotating relative to the first tuning structure within the second through hole, while allowing the second tuning structure to move relative to the first tuning structure along the axial direction of the second through hole.

[0014] In one embodiment, the first tuning structure is a ring structure, the second tuning structure is a columnar structure, and the axis of the second tuning structure coincides with the axis of the first tuning structure.

[0015] In one embodiment, the first tuning structure is used to apply pressure to the first portion to cause deformation of the deformable region; one end of the first tuning structure is provided with a first fine-tuning structure, the first tuning structure can apply pressure to the first portion through the first fine-tuning structure, and the contact area when the first fine-tuning structure is in direct contact with the first portion is smaller than the contact area when the first tuning structure is in direct contact with the first portion; and / or

[0016] The second tuning structure is used to apply pressure to the second part to cause the deformation area to deform; one end of the second tuning structure is provided with a second fine-tuning structure, the second tuning structure can apply pressure to the second part through the second fine-tuning structure, and the contact area when the second fine-tuning structure is in direct contact with the second part is smaller than the contact area when the second tuning structure is in direct contact with the second part.

[0017] In one embodiment, the first tuning structure includes a first main body and a first head, the first head being detachably disposed on the first main body, and the first fine-tuning structure being disposed on the first head on a side opposite to the first main body; and / or

[0018] The second tuning structure includes a second main body and a second head, the second head being detachably disposed on the second main body, and the second fine-tuning structure being disposed on the side of the second head opposite to the second main body.

[0019] A second aspect of this application provides a filter suitable for adjusting the resonant frequency using a tuning component as described in any of the above embodiments. The filter includes: a cavity; and a cover plate covering an opening in the cavity; wherein the cavity or the cover plate has a deformable region, the deformable region having a first portion and a second portion, the position of the second portion being different from the position of the first portion; the first portion is used for applying force to a first tuning structure of the tuning component, and the second portion is used for applying force to a second tuning structure of the tuning component.

[0020] In one embodiment, the thickness of the first portion is greater than the thickness of the second portion; or, the thickness of the first portion is less than the thickness of the second portion.

[0021] In one embodiment, the first portion is arranged in a ring shape, and the second portion is located inside the first portion.

[0022] A third aspect of this application provides a tuning method suitable for adjusting the resonant frequency of a filter using the tuning components described in any of the above embodiments, the filter including a cavity and a cover plate, the cavity or the cover plate having a deformable region, the tuning method comprising:

[0023] The first tuning structure of the tuning component applies force to a first portion of the deformable region to cause deformation of the deformable region.

[0024] The second tuning structure of the tuning component applies force to a second portion of the deformable region to cause deformation of the deformable region; wherein the position of the second portion is different from the position of the first portion.

[0025] In one embodiment, one end of the second tuning structure is provided with a second fine-tuning structure, and the contact area when the second fine-tuning structure directly contacts the second part is smaller than the contact area when the second tuning structure directly contacts the second part; the step of applying force to the second part of the deformation region by the second tuning structure of the tuning component to cause deformation of the deformation region includes:

[0026] Pressure is applied to the second part by one end of the second tuning structure that does not have the second fine-tuning structure, or by applying pressure to the second part using the second tuning structure that does not have the second fine-tuning structure, so that the deformation area is deformed.

[0027] The second tuning structure is provided with a second fine-tuning structure at one end, which applies pressure to the second part through the second fine-tuning structure to cause deformation of the deformation area.

[0028] In one embodiment, the step of applying pressure to the second portion through the second fine-tuning structure at one end of the second tuning structure to cause deformation of the deformation region includes:

[0029] Position the second tuning structure at a first position relative to the first tuning structure, and apply pressure to the second portion through the second fine-tuning structure;

[0030] The second tuning structure is rotated about its own axis by a preset angle so that the second tuning structure is in a second position relative to the first tuning structure, and the second tuning structure applies pressure to the second part through the second fine-tuning structure; wherein the second position is different from the first position.

[0031] In one embodiment, the number of second tuning structures is multiple, and the structure of the second fine-tuning structure on each second tuning structure is different; the step of applying pressure to the second portion through the second fine-tuning structure at one end of the second tuning structure to cause deformation of the deformation region includes:

[0032] This causes one of the second tuning structures to apply pressure to the second part through its own second fine-tuning structure;

[0033] The second tuning structure is replaced with another second tuning structure, and this other second tuning structure applies pressure to the second part through its own second fine-tuning structure.

[0034] The above-described one or more technical solutions in the embodiments of this application have at least the following technical effects or advantages:

[0035] The tuning component provided in this application embodiment is used to adjust the resonant frequency of a filter. The filter includes a cavity and a cover plate. The cavity or cover plate has a deformable region. By setting the tuning component, including a first tuning structure and a second tuning structure, the first tuning structure is used to apply force to a first part of the deformable region to cause deformation of the deformable region, and the second tuning structure is used to apply force to a second part of the deformable region to cause deformation of the deformable region. The deformation of the deformable region can change the capacitance inside the filter, thereby adjusting the resonant frequency of the filter. Since the position of the second part is different from the position of the first part, that is, the first tuning structure and the second tuning structure apply force to the deformable region at different positions, it is beneficial for the deformable region to produce different deformation amounts in the first part and the second part. This results in different tuning ranges when the first tuning structure and the second tuning structure apply force to the deformable region. Therefore, by combining different tuning ranges, the control over the deformation amount of the deformable region can be improved, thereby improving the accuracy of adjusting the resonant frequency. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of the tuning component provided in the embodiments of this application;

[0038] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0039] Figure 3 for Figure 1 Another structural diagram of the tuning component in the diagram;

[0040] Figure 4 for Figure 1 A schematic diagram of the exploded structure of the tuning components in the diagram;

[0041] Figure 5 This is a schematic diagram of the second tuning structure without a second fine-tuning structure provided in an embodiment of this application;

[0042] Figure 6 A schematic diagram of the second tuning structure provided in another embodiment of this application;

[0043] Figure 7 This is a schematic diagram of the filter structure provided in an embodiment of this application;

[0044] Figure 8 for Figure 1 Tuning component adjustment Figure 7 A schematic diagram of the filter's structure at its resonant frequency;

[0045] Figure 9 for Figure 8 Schematic diagram of the cross-sectional structure in the middle BB direction.

[0046] The following are the labeling elements in the figure:

[0047] 100. Tuning component; 10. First tuning structure; 20. Second tuning structure; 30. Fixing structure; 301. First through hole; 40. Auxiliary screwing structure; 50. Mounting part; 101. Second through hole; 111. Limiting part; 211. Limiting mating part; 60. Second fine-tuning structure; 21. Second main body part; 22. Second head;

[0048] 200, Filter; 210, Cavity; 220, Cover plate; 230, Resonant rod; 201, Deformation area; 2011, First part; 2012, Second part; 2001, First slot; 2002, Second slot; 120, Clearance space. Detailed Implementation

[0049] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0050] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0052] In this application, unless otherwise expressly specified and limited, the terms "installation," "assembly," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] In related technologies, there are schemes that adjust the resonant frequency by deforming the cover plate of a filter. For example, the cover plate has a deformable region made of a ductile metal material. By applying force to the deformable region to cause it to deform, the distance between the deformable region and the resonant rod inside the filter can be changed, thereby changing the capacitance and thus adjusting the resonant frequency of the filter.

[0054] In the process of creating the technical solution of this application, the inventors discovered that, due to the deformation characteristics of the plastic metal material in the deformation region of the cover plate, even applying a small force to the cover plate can easily cause the deformation of the cover plate to exceed the required tuning precision index. Furthermore, because the deformation range of the deformation region is large, even if a step-by-step tuning method is used to apply force to the deformation region, it is difficult to match the range of deformation of the deformation region each time with the required tuning requirements. Therefore, it is difficult to control the deformation of the cover plate during the deformation process, making it difficult to accurately adjust to the required resonant frequency.

[0055] Based on this, in order to improve the technical problem in related technologies that it is difficult to control the deformation of the cover plate, resulting in difficulty in accurately adjusting to the required resonant frequency, the inventors have proposed the following solution.

[0056] Please see Figures 1 to 4 This application provides a tuning component 100 for adjusting the resonant frequency of a filter. The filter includes a cavity and a cover plate. The cavity or cover plate has a deformable region, which is a region that can deform. Figure 7 and Figure 9 The image exemplarily illustrates a filter 200, a cover plate 220, a cavity 210, and a deformable region 201. The tuning assembly 100 includes a first tuning structure 10 and a second tuning structure 20, wherein:

[0057] The first tuning structure 10 is used to apply force to the first part 2011 of the deformable region 201 so that the deformable region 201 deforms. The first tuning structure 10 can be a structure of various shapes that can apply force to the deformable region 201, such as a columnar structure, a cylindrical structure, a rod-shaped structure, etc., but is not limited thereto.

[0058] The second tuning structure 20 is movable relative to the first tuning structure 10. The second tuning structure 20 applies force to the second portion 2012 of the deformable region 201, causing deformation of the deformable region 201. The position of the second portion 2012 differs from the position of the first portion 2011. The second tuning structure 20 can be a structure of various shapes capable of applying force to the deformable region 201, such as a columnar structure, a cylindrical structure, a rod-like structure, etc., but is not limited thereto.

[0059] It should be understood that the order in which the first tuning structure 10 and the second tuning structure 20 apply force to the deformable region 201 is not limited; that is, the first tuning structure 10 may apply force to the first part 2011 of the deformable region 201, and then the second tuning structure 20 may apply force to the second part 2012 of the deformable region 201, or the second tuning structure 20 may apply force to the second part 2012 of the deformable region 201, and then the first tuning structure 10 may apply force to the first part 2011 of the deformable region 201.

[0060] As can be seen from the above, the tuning component 100 provided in this application embodiment is used to adjust the resonant frequency of the filter 200. The filter 200 includes a cavity 210 and a cover plate 220. The cavity 210 or the cover plate 220 has a deformable region 201. By setting the tuning component 100, including a first tuning structure 10 and a second tuning structure 20, the first tuning structure 10 is used to apply force to the first part 2011 of the deformable region 201 to cause the deformable region 201 to deform. The second tuning structure 20 is used to apply force to the second part 2012 of the deformable region 201 to cause the deformable region 201 to deform. The deformation of the deformable region 201 can change the distance between the deformable region 201 and the resonant rod inside the filter 200, thereby changing the capacitance and adjusting the resonant frequency of the filter 200. Since the position of the second part 2012 is different from that of the first part 2011, that is, the first tuning structure 10 and the second tuning structure 20 apply force to the deformable region 201 at different positions, the deformable region 201 will produce different deformations in the first part 2011 and the second part 2012. This results in different tuning ranges when the first tuning structure 10 and the second tuning structure 20 apply force to the deformable region 201. Therefore, by combining different tuning ranges, the control over the deformation of the deformable region 201 can be improved, thereby improving the accuracy of adjusting the resonant frequency.

[0061] It is understood that the material of the deformation region 201 can be a ductile metal material, such as aluminum, silver, copper, etc., but is not limited to this.

[0062] In one embodiment, see Figures 1 to 4 The tuning assembly 100 also includes a fixing structure 30, on which the first tuning structure 10 is movably disposed. The fixing structure 30 can be mounted on the cavity or cover plate of the filter. It should be understood that the first tuning structure 10 can be disposed on the fixing structure 30 in various ways that allow it to move relative to the fixing structure 30; the first tuning structure 10 can rotate, move linearly, or move both relative to the fixing structure 30.

[0063] With this configuration, since the first tuning structure 10 is movably mounted on the fixed structure 30, the fixed structure 30 can provide support and positioning for the first tuning structure 10, thereby improving the stability of the first tuning structure 10 during movement and thus improving the stability of the first tuning structure 10 when applying force to the deformation region 201. Furthermore, when the filter cavity or cover plate is thin, the fixed structure 30 indirectly increases the thickness of the filter cavity or cover plate, which reduces the possibility of damage to the filter cavity or cover plate when supporting and positioning the first tuning structure 10 without the fixed structure 30. At the same time, it can also solve the problem of inconvenient tuning of the first tuning structure 10 when the filter cavity or cover plate is thin, thus improving the convenience of tuning.

[0064] Alternatively, in one embodiment, please refer to Figures 1 to 4 The fixing structure 30 has a first through hole 301, and the first tuning structure 10 passes through the first through hole 301. It can be understood that one end of the first tuning structure 10 can extend to the outside of the first through hole 301 to apply force to the deformation region 201.

[0065] With this configuration, the first tuning structure 10 moves within the first through hole 301 when it moves relative to the fixed structure 30. The inner wall of the first through hole 301 can provide guidance and positioning for the movement of the first tuning structure 10, so as to facilitate the first tuning structure 10 to make linear motion relative to the fixed structure 30 or to make both rotational and linear motion simultaneously.

[0066] It is understood that the exterior of the fixing structure 30 can be of various shapes. For example, the fixing structure 30 can be generally ring-shaped, and the first tuning structure 10 can be generally ring-shaped.

[0067] Optionally, please refer to Figure 2 The inner wall of the first through hole 301 is provided with an internal thread, and the outer wall of the first tuning structure 10 is provided with an external thread, with the external thread engaging with the internal thread. In this case, the fixing structure 30 can be fixed to the cavity or cover plate, or it can be fixed to an external device or apparatus.

[0068] With this configuration, when the first tuning structure 10 needs to apply force to the deformation area 201, the first tuning structure 10 can be screwed on, so that the first tuning structure 10 rotates while moving linearly relative to the fixed structure 30 through the engagement of the external and internal threads, thereby applying pressure or tension to the deformation area 201. Since it is through threaded engagement, it is convenient to control the stroke of its linear movement according to the number of turns of the first tuning structure 10, thereby controlling the degree of force applied to the deformation area 201 and improving tuning accuracy.

[0069] Optionally, please refer to Figures 1 to 4The first tuning structure 10 is provided with an auxiliary turning structure 40. The auxiliary turning structure 40 can be any structure that facilitates gripping or clamping by a person, tool, or instrument; for example, the auxiliary turning structure 40 can be a protruding structure protruding from the side of the first tuning structure 10, a hole or groove structure opened on the first tuning structure 10, an anti-slip structure (such as a vertical stripe, pattern, or other patterned structure) provided on the outer surface of the first tuning structure 10, or a milled flattening structure provided on the outer surface of the first tuning structure 10, etc., but is not limited to these.

[0070] This design facilitates the gripping or clamping of the auxiliary screwing structure 40 by hand, tools, or instruments, while the screwing of the first tuning structure 10 is conducive to force application.

[0071] For example, please refer to Figures 1 to 4 The auxiliary screwing structure 40 is a protruding structure protruding from the side of the first tuning structure 10, which may include two symmetrically arranged ears to facilitate gripping or clamping by hand, tool or instrument for screwing.

[0072] Of course, in some other implementations, the auxiliary screwing structure 40 may not be provided.

[0073] It should be noted that the first tuning structure 10 is not limited to being installed on the fixed structure 30 by means of a threaded connection. Optionally, in some other embodiments, the first tuning structure 10 may also be slidably engaged with the first through hole 301. In this case, the first tuning structure 10 can apply force to the deformable region 201 by making linear movements relative to the fixed structure 30.

[0074] It should also be noted that the first tuning structure 10 is not limited to being disposed on the fixed structure 30 through the first through hole 301. In some other embodiments, the fixed structure 30 may not be provided with the first through hole 301; for example, the first tuning structure 10 may be slidably fitted to the fixed structure 30 through a groove.

[0075] Alternatively, in one embodiment, please refer to Figure 2 , Figure 4 and Figure 9 The fixing structure 30 is provided with a mounting part 50, which is used to mount the fixing structure 30 onto the cavity 210 or the cover plate 220. It can be understood that the mounting part 50 can be any structure that can mount one component onto another component, such as a threaded structure, fastener, knurled structure, plug-in structure, snap-fit ​​structure, etc., but is not limited to these.

[0076] With this configuration, the fixing structure 30 can be mounted on the cavity 210 or the cover plate 220 via the mounting part 50, so that when the first tuning structure 10 moves relative to the fixing structure 30 and applies force to the deformation area 201, the fixing structure 30 does not move relative to the cavity 210 or the cover plate 220, which helps to improve the stability of the first tuning structure 10 during tuning.

[0077] For example, the mounting portion 50 can be a threaded structure to facilitate threaded engagement with the groove wall on the cavity 210 or the cover plate 220. For example, the mounting portion 50 can be a protruding structure that can be interference-fitted with the groove wall on the cavity 210 or the cover plate 220.

[0078] Of course, in some other embodiments, the mounting part 50 may not be provided. For example, the fixing structure 30 may be placed directly on the cavity 210 or the cover plate 220.

[0079] It should be noted that the fixing structure 30 is not mandatory. In some other embodiments, the fixing structure 30 may not be provided; for example, the cavity 210 or the cover plate 220 may have a groove, and the bottom wall of the groove may form a deformable area 201. The first tuning structure 10 may cooperate with the side wall of the groove. In this case, the cavity 210 or the cover plate 220 may serve as the fixing structure 30.

[0080] In one embodiment, see Figures 1 to 4 The second tuning structure 20 is movably disposed on the first tuning structure 10. The second tuning structure 20 can be disposed on the first tuning structure 10 in various ways that allow it to move relative to the first tuning structure 10; the second tuning structure 20 can perform linear motion, rotational motion, or both linear motion and rotational motion relative to the first tuning structure 10.

[0081] With this configuration, since the second tuning structure 20 is movably mounted on the first tuning structure 10, the first tuning structure 10 can provide support and positioning for the second tuning structure 20, thereby improving the stability of the second tuning structure 20 when it moves, and further improving the stability of the second tuning structure 20 when it applies force to the deformation region 201.

[0082] It should be noted that in some other embodiments, the second tuning structure 20 may not be provided on the first tuning structure 10.

[0083] Alternatively, in one embodiment, please refer to Figures 1 to 4 The first tuning structure 10 has a second through hole 101, and the second tuning structure 20 passes through the second through hole 101. It can be understood that one end of the second tuning structure 20 can extend to the outside of the second through hole 101 to apply force to the deformable region 201.

[0084] With this configuration, the second tuning structure 20 moves within the second through hole 101 when it moves relative to the first tuning structure 10. The inner wall of the second through hole 101 can provide guidance and positioning for the movement of the second tuning structure 20, so as to facilitate the second tuning structure 20 to make linear motion relative to the first tuning structure 10 or to make both rotational and linear motion simultaneously.

[0085] Alternatively, in one embodiment, please refer to Figures 1 to 4 The inner wall of the second through hole 101 is provided with at least one limiting part 111, and the outer wall of the second tuning structure 20 is provided with a plurality of limiting mating parts 211 evenly distributed. Each limiting part 111 is limited and mated with the limiting mating part 211 to restrict the second tuning structure 20 from rotating within the second through hole 101 relative to the first tuning structure 10, while allowing the second tuning structure 20 to move along the axial direction of the second through hole 101 relative to the first tuning structure 10. Alternatively, the inner wall of the second through hole 101 is provided with a plurality of limiting parts 111 evenly distributed, and the outer wall of the second tuning structure 20 is provided with at least one limiting mating part. Each limiting mating part 211 is limited and mated with the limiting part 111 to restrict the second tuning structure 20 from rotating within the second through hole 101 relative to the first tuning structure 10, while allowing the second tuning structure 20 to move along the axial direction of the second through hole 101 relative to the first tuning structure 10.

[0086] With this configuration, the limiting part 111 and the limiting engagement part 211 ensure that when the second tuning structure 20 moves relative to the first tuning structure 10 and applies force to the deformation region 201, the second tuning structure 20 only moves linearly relative to the first tuning structure 10 and cannot rotate. This makes it less likely for the second tuning structure 20 to affect the position of the first tuning structure 10 relative to the filter during tuning, thus improving the stability of the force applied by the second tuning structure 20 to the deformation region 201. Furthermore, due to the number of limiting engagement parts 211 or limiting parts 111... When the quantity is multiple and evenly distributed, it is beneficial that when the second tuning structure 20 moves out of the second through hole 101, rotates around its own axis by a certain angle, and is then placed back into the second through hole 101, force can be applied to different positions of the deformation area 201. This is beneficial because the rotation angle of the second tuning structure 20 is consistent each time it moves out of the second through hole 101, rotates around its own axis by a certain angle, and is then placed back into the second through hole 101. This, in turn, is beneficial because the deformation of the second part 2012 can remain consistent each time force is applied, so that the deformation of the second part 2012 gradually increases and more regular tuning is achieved.

[0087] It can be understood that the limiting part 111 and the limiting mating part 211 are a structural pair that cooperates with each other to restrict relative rotation between the two. Optionally, one of the limiting part 111 and the limiting mating part 211 is a protruding structure and the other is a recessed structure.

[0088] For example, please refer to Figure 1 and Figure 4 The number of limiting parts 111 is multiple and evenly distributed, the number of limiting mating parts 211 is multiple and evenly distributed, and the limiting parts 111 and the limiting mating parts 211 correspond one-to-one.

[0089] Alternatively, in one embodiment, please refer to Figures 1 to 4 The first tuning structure 10 is a ring structure, the second tuning structure 20 is a column structure, and the axis of the second tuning structure 20 coincides with the axis of the first tuning structure 10.

[0090] With this configuration, the first tuning structure 10 is a ring structure, and since the axis of the second tuning structure 20 coincides with the axis of the first tuning structure 10, the second tuning structure 20 can be roughly located at the center of the first tuning structure 10, which is conducive to the first tuning structure 10 and the second tuning structure 20 applying force evenly to the deformation area 201.

[0091] It should be noted that the second tuning structure 20 is not limited to being disposed on the first tuning structure 10 through the second through hole 101. In some other embodiments, the first tuning structure 10 may not be provided with the second through hole 101.

[0092] In one embodiment, see Figure 9 The first tuning structure 10 is used to apply pressure to the first part 2011 to cause deformation of the deformation region 201; the second tuning structure 20 is used to apply pressure to the second part 2012 to cause deformation of the deformation region 201.

[0093] With this configuration, the first tuning structure 10 and the second tuning structure 20 can directly apply pressure to the deformation region 201, causing the deformation region 201 to deform inward toward the filter. There is no need to set up a structure on the deformation region 201 for connecting and fixing with the first tuning structure 10 and the second tuning structure 20, which helps to simplify the structure.

[0094] Of course, in some other embodiments, the first tuning structure 10 may also apply a tensile force to the first part 2011 to cause deformation of the deformable region 201. In this case, the first part 2011 needs to be provided with a structure for connecting and fixing to the first tuning structure 10, such as a connecting hole, a protrusion, etc., but is not limited thereto. Similarly, the second tuning structure 20 may also apply a tensile force to the second part 2012 to cause deformation of the deformable region 201. In this case, the second part 2012 needs to be provided with a structure for connecting and fixing to the second tuning structure 20, such as a connecting hole, a protrusion, etc., but is not limited thereto.

[0095] Alternatively, in one embodiment, please refer to Figures 2 to 6 ,as well as Figure 9One end of the second tuning structure 20 is provided with a second fine-tuning structure 60. The second tuning structure 20 can apply pressure to the second part 2012 through the second fine-tuning structure 60. The contact area when the second fine-tuning structure 60 and the second part 2012 are in direct contact is smaller than the contact area when the second tuning structure 20 and the second part 2012 are in direct contact. That is, the contact area when the second fine-tuning structure 60 and the second part 2012 are in direct contact is the first contact area, and the contact area when the second tuning structure 20 is in direct contact with the second part 2012 without the second fine-tuning structure 60 is the second contact area. The first contact area is smaller than the second contact area.

[0096] With this configuration, when the second tuning structure 20 applies pressure to the second part 2012 through the second fine-tuning structure 60, the contact area between the second fine-tuning structure 60 and the second part 2012 is smaller than the contact area between the second tuning structure 20 and the second part 2012 in direct contact. This helps to reduce the deformation of the deformation area 201 during adjustment, making it easier to achieve fine-tuning of the resonant frequency and enabling more precise control during index tuning.

[0097] It is understandable that the second fine-tuning structure 60 can be of various shapes, as long as it can reduce the contact area when the second tuning structure 20 directly contacts the second part 2012.

[0098] Optionally, the second fine-tuning structure 60 can be a protrusion structure of various shapes, such as a protrusion point, a protrusion ring, etc., but is not limited to this. Figure 4 The example illustrates the case where the second fine-tuning structure 60 consists of multiple protrusions. Figure 6 The example shown is the case where the second fine-tuning structure 60 is a convex ring.

[0099] Optionally, the second fine-tuning structure 60 may include a fine-tuning hole formed on the second tuning structure 20 and a fine-tuning element movably disposed in the fine-tuning through hole. The fine-tuning hole may be a through hole or a blind hole, and the fine-tuning element may be a structure of various shapes capable of applying force to the deformable region 201, such as a rod-shaped element or a bar-shaped element. When the second fine-tuning structure 60 fine-tunes the deformable region 201, the fine-tuning element can be controlled to move within the fine-tuning hole so that the end of the fine-tuning element extends out of the fine-tuning hole and applies force to the deformable region 201.

[0100] For example, when applying force to the deformed region 201 to adjust the resonant frequency of the filter 200, the first tuning structure 10 can be used to apply force to the first part 2011 to achieve the first adjustment; then, the end of the second tuning structure 20 without the second fine-tuning structure 60 can be used to apply force to the second part 2012, or the second tuning structure 20 without the second fine-tuning structure 60 can be used to apply force to the second part 2012 to achieve the second adjustment; finally, the end of the second tuning structure 20 with the second fine-tuning structure 60 can be used to apply force to the second part 2012 through the second fine-tuning structure 60 to achieve the third adjustment, i.e., fine-tuning. Thus, the tuning component 100 can achieve triple adjustment, effectively improving the control over the deformation of the deformed region 201, thereby improving the accuracy of adjusting the resonant frequency of the filter 200.

[0101] The order of the first and second adjustments can be reversed. That is, the second tuning structure 20 without the second fine-tuning structure 60 can be used to apply force to the second part 2012 first, or the second tuning structure 20 without the second fine-tuning structure 60 can be used to apply force to the second part 2012, and then the first tuning structure 10 can apply force to the first part 2011.

[0102] In the third adjustment, or fine-tuning, after the previous adjustment is completed, the second tuning structure 20 can be moved out of the second through hole 101. According to the setting position of the limiting part 111 and the limiting mating part 211, the second tuning structure 20 is rotated around its own axis by a certain angle so that the limiting mating part 211 is limited and mated with another limiting part 111. Then, the second tuning structure 20 is put back into the second through hole 101, and force is applied to the second part 2012. In this way, multiple fine-tuning can be achieved, which is beneficial to ensure that the deformation of the deformation area 201 produced by the second tuning structure 20 is approximately the same each time and is evenly distributed. This allows the tuning amount to increase linearly and gradually on the basis of small adjustments, achieving more regular tuning and increasing the tuning accuracy.

[0103] Optionally, there can be multiple second tuning structures 20, each of which is provided with a second fine-tuning structure 60, and the structures of the second fine-tuning structures 60 on each second tuning structure 20 are different. For example, when the second fine-tuning structures 60 on each second fine-tuning structure 60 are all convex rings, the outer diameters of the convex rings on each second tuning structure 20 are different; for example, when the second fine-tuning structures 60 on each second fine-tuning structure 60 are all circles formed by multiple convex points, the outer diameters of the circles formed by the convex points on each second tuning structure 20 are different.

[0104] With this setup, by replacing different second tuning structures 20, force can be applied to the deformation region 201 through the second fine-tuning structure 60 with different structures, and multiple fine-tuning can also be achieved.

[0105] Alternatively, in one embodiment, please refer to Figure 6 The second tuning structure 20 includes a second main body 21 and a second head 22. The second head 22 is detachably disposed on the second main body 21. The second head 22 can be disposed on the second main body 21 in various ways that can be detached from the second main body 21, such as plugging, snapping, fastener connection, etc., but is not limited thereto. The second fine-tuning structure 60 is disposed on the side of the second head 22 away from the second main body 21.

[0106] With this configuration, the structure of the second fine-tuning structure 60 can be changed by replacing different second heads 22. In this case, one second main body 21 can be set, while multiple second heads 22 of the second fine-tuning structure 60 with different structures can be set. Compared with setting multiple second tuning structures 20, material costs can be reduced.

[0107] It should be noted that the second fine-tuning structure 60 is not limited to being provided only on the second tuning structure 20. Optionally, in some other embodiments, the first tuning structure 10 is used to apply pressure to the first portion 2011 to cause deformation of the deformation region 201. One end of the first tuning structure 10 may be provided with a first fine-tuning structure. The first tuning structure 10 can apply pressure to the first portion 2011 through the first fine-tuning structure, and the contact area when the first fine-tuning structure is in direct contact with the first portion 2011 is smaller than the contact area when the first tuning structure 10 is in direct contact with the first portion 2011. It is understood that the structure of the first fine-tuning structure can be the same as the structure of the second fine-tuning structure 60 described above, and will not be repeated here.

[0108] Optionally, the first tuning structure 10 may include a first main body and a first head, the first head being detachably disposed on the first main body, and the first fine-tuning structure being disposed on the side of the first head opposite to the first main body.

[0109] Please see Figure 7This application also provides a filter 200, suitable for adjusting the resonant frequency using the tuning component 100 of any of the above embodiments. The filter 200 includes a cavity 210 and a cover plate 220, with the cover plate 220 covering the opening of the cavity 210. The cavity 210 or the cover plate 220 has a deformable region 201, which has a first portion 2011 and a second portion 2012. The position of the second portion 2012 is different from the position of the first portion 2011. The first portion 2011 is used for applying force to the first tuning structure 10 of the tuning component 100, and the second portion 2012 is used for applying force to the second tuning structure 20 of the tuning component 100.

[0110] Since the filter 200 provided in this application embodiment uses the tuning component 100 of any of the above embodiments to adjust the resonant frequency, the first tuning structure 10 and the second tuning structure 20 of the tuning component 100 apply force to different positions of the deformable region 201, so that the deformable region 201 produces different deformations in the first part 2011 and the second part 2012. As a result, the tuning ranges produced when the first tuning structure 10 and the second tuning structure 20 apply force to the deformable region 201 are different. Therefore, by combining different tuning ranges, the degree of control over the deformation of the deformable region 201 can be improved, thereby improving the accuracy of adjusting the resonant frequency of the filter 200.

[0111] It is understandable that after the resonant frequency of filter 200 is adjusted, the tuning component 100 can be removed from filter 200 without interfering with the placement and operation of filter 200. At the same time, it simplifies the structure of filter 200, reduces the number of parts of filter 200, and facilitates the miniaturization and weight reduction of filter.

[0112] In one embodiment, see Figure 9 The filter 200 also includes a resonant rod 230, which is disposed inside the cavity 210. The position of the resonant rod 230 corresponds to the position of the deformable region 201. When the deformable region 201 deforms, the distance between the deformable region 201 and the resonant rod 230 changes, thereby changing the capacitance and thus adjusting the resonant frequency.

[0113] In one embodiment, see Figure 7 and Figure 9 The thickness of the first part 2011 is greater than that of the second part 2012. The second part 2012 is more prone to deformation than the first part 2011, which is more conducive to achieving the purpose of multiple tuning.

[0114] Alternatively, in one embodiment, please refer to Figure 7 The first part 2011 is arranged in a ring, and the second part 2012 is located inside the first part 2011.

[0115] Optionally, please refer to Figure 7 A first groove 2001 is provided on the deformable area 201, and a second groove 2002 is provided on the bottom wall of the first groove 2001. The bottom wall of the second groove 2002 forms a second part 2012, and the part of the bottom wall of the first groove 2001 outside the second groove 2002 forms a first part 2011.

[0116] Of course, in some other embodiments, the deformable region 201 may not have the first groove 2001, but only the second groove 2002. In this case, the bottom wall of the second groove 2002 forms the second part 2012, and the part of the deformable region 201 outside the second groove 2002 forms the first part 2011.

[0117] Optionally, when the deformation region 201 is subjected to force for tuning, a clearance space 120 is formed between the first tuning structure 10 and the second part 2012 to facilitate the smooth movement of the second tuning structure 20 to apply force to the second part 2012.

[0118] Of course, in some other embodiments, a clearance space may not be formed between the first tuning structure 10 and the second part 2012; for example, the outer peripheral sidewall of the end of the second tuning structure 20 near the second part 2012 may be a conical sidewall or a frustum sidewall, which may also allow it to move smoothly to apply force to the second part 2012.

[0119] It should be noted that in some other embodiments, the thickness of the first portion 2011 may be less than the thickness of the second portion 2012, in which case the first portion 2011 is more prone to deformation than the second portion 2012. In this case, a first fine-tuning structure may be provided at one end of the first tuning structure 10. In some other embodiments, the thickness of the first portion 2011 may also be equal to the thickness of the second portion 2012.

[0120] It is understood that the above description is mainly intended to illustrate the innovation of the filter 200 provided in the embodiments of this application. In addition to the above-mentioned components, the filter 200 provided in the embodiments of this application may also have other components. These other components can be components of existing filters, which are well known to those skilled in the art and will not be elaborated here.

[0121] This application embodiment also provides a tuning method suitable for adjusting the resonant frequency of a filter 200 using the tuning component 100 of any of the above embodiments. The filter 200 includes a cavity 210 and a cover plate 220, the cavity 210 or the cover plate 220 having a deformable region 201. The tuning method includes:

[0122] S100, the first tuning structure 10 of the tuning component 100 applies force to the first part 2011 of the deformation region 201, so that the deformation region 201 deforms.

[0123] S200, the second tuning structure 20 of the tuning component 100 applies force to the second part 2012 of the deformation region 201 to cause the deformation region 201 to deform; wherein the position of the second part 2012 is different from the position of the first part 2011.

[0124] Since the tuning method provided in this application embodiment is suitable for adjusting the resonant frequency of the filter 200 using the tuning component 100 of any of the above embodiments, by applying force to different positions of the deformable region 201 by the first tuning structure 10 and the second tuning structure 20 of the tuning component 100 respectively, the deformable region 201 produces different deformations in the first part 2011 and the second part 2012, and thus the tuning ranges produced by the first tuning structure 10 and the second tuning structure 20 when applying force to the deformable region 201 are different. Therefore, by combining different tuning ranges, the control over the deformation of the deformable region 201 can be improved, thereby improving the accuracy of adjusting the resonant frequency of the filter 200.

[0125] In one embodiment, in step S100, when the tuning assembly 100 includes a fixed structure 30, the fixed structure 30 can be first installed on the cavity 210 or cover plate 220 of the filter 200, and then the first tuning structure 10 can be moved relative to the fixed structure 30 to apply force to the first part 2011 of the deformation region 201, so as to improve the tuning stability and convenience.

[0126] Optionally, in one embodiment, when the first tuning structure 10 is threaded onto the fixed structure 30, the first tuning structure 10 can be rotated to make it move linearly relative to the fixed structure 30 while rotating, thereby applying pressure or tension to the first part 2011 of the deformation region 201. This allows the stroke of the linear movement of the first tuning structure 10 to be controlled according to the number of turns of the first tuning structure 10, thereby controlling the degree of force applied to the deformation region 201 and improving tuning accuracy.

[0127] Optionally, when the first tuning structure 10 is provided with an auxiliary screwing structure 40, the first tuning structure 10 can be screwed by grasping or clamping the auxiliary screwing structure 40 with a person's hand, tool or instrument, which is beneficial for force application.

[0128] In one embodiment, one end of the second tuning structure 20 is provided with a second fine-tuning structure 60, and the contact area when the second fine-tuning structure 60 directly contacts the second part 2012 is smaller than the contact area when the second tuning structure 20 directly contacts the second part 2012; in step S200, the second tuning structure 20 of the tuning component 100 applies force to the second part 2012 of the deformation region 201 to cause the deformation region 201 to deform, including:

[0129] S210, apply pressure to the second part 2012 at the end of the second tuning structure 20 without the second fine-tuning structure 60, or apply pressure to the second part 2012 using the second tuning structure 20 without the second fine-tuning structure 60, so that the deformation region 201 deforms.

[0130] S220, the second tuning structure 20 is provided with a second fine-tuning structure 60 at one end, and pressure is applied to the second part 2012 through the second fine-tuning structure 60 to cause deformation of the deformation region 201.

[0131] It should be understood that the order of steps S100 and S210 is not limited. Step S100 can be performed first and then step S210, or step S210 can be performed first and then step S100.

[0132] As can be seen from the above, triple adjustment can be achieved through steps S100, S210, and S220, which can effectively improve the control of the deformation of the deformation region 201, and thus improve the accuracy of adjusting the resonant frequency of the filter 200.

[0133] Optionally, in one embodiment, in step S220, one end of the second tuning structure 20 having the second fine-tuning structure 60 applies pressure to the second portion 2012 through the second fine-tuning structure 60 to cause deformation of the deformation region 201, including:

[0134] S221, the second tuning structure 20 is positioned in a first position relative to the first tuning structure 10, and one end of the second tuning structure 20 having a second fine-tuning structure 60 applies pressure to the second part 2012 through the second fine-tuning structure 60.

[0135] S222, the second tuning structure 20 is rotated about its own axis by a preset angle so that the second tuning structure 20 is in a second position relative to the first tuning structure 10, and one end of the second tuning structure 20 with the second fine-tuning structure 60 applies pressure to the second part 2012 through the second fine-tuning structure 60; wherein the second position is different from the first position.

[0136] It can be understood that by rotating the second tuning structure 20 around its own axis by a preset angle, the second tuning structure 20 can change from a first position relative to the first tuning structure 10 to a second position relative to the first tuning structure 10, thereby changing the positional state of the second tuning structure 20 relative to the first tuning structure 10. The preset angle can be set according to actual needs, and the preset angle is less than 360°.

[0137] It should be understood that the first position and the second position are not limited to specific or fixed positions, but rather reflect their relative differences. That is, the second tuning structure 20 is in the second position differently than it is in the first position, but the first position can change, and the second position will change accordingly. After performing steps S221 and S222 in sequence, steps S221 and S222 can be repeated again, that is, steps S221 and S222 can be performed cyclically until the adjustment of the deformation region 201 reaches the required tuning amount, which can better achieve fine-tuning.

[0138] As can be seen from the above, by performing steps S221 and S222, the second part 2012 of the deformed region 201 can be finely adjusted multiple times, which can further improve the control of the deformation of the deformed region 201, and thus further improve the accuracy of adjusting the resonant frequency of the filter 200.

[0139] Optionally, when the second tuning structure 20 is disposed on the first tuning structure 10 through the engagement of the limiting part 111 and the limiting fitting part 211, in step S222, the second tuning structure 20 can be moved out of the second through hole 101. According to the placement position of the limiting part 111 and the limiting fitting part 211, the second tuning structure 20 is rotated around its own axis by a certain angle so that the limiting fitting part 211 engages with another limiting part 111. The second tuning structure 20 is then placed back into the second through hole 101, and force is applied to the second part 2012. The position of the second tuning structure 20 can be positioned by the limiting part 111 and the limiting fitting part 211, which facilitates the change of the second tuning structure 20 from a first position relative to the first tuning structure 10 to a second position relative to the first tuning structure 10. In this way, not only can multiple fine adjustments be achieved, but it also helps to ensure that the deformation of the deformation region 201 produced by the second tuning structure 20 is roughly the same each time and is evenly distributed. This allows the tuning amount to increase linearly and gradually on the basis of small adjustments each time, achieving more regular tuning and improving the tuning accuracy.

[0140] It should be noted that the second tuning structure 20 is not limited to being provided on the first tuning structure 10 by the cooperation of the limiting part 111 and the limiting mating part 211. For example, the limiting part 111 and the limiting mating part 211 may not be provided. The second tuning structure 20 can change its position by rotating around its own axis by a preset angle.

[0141] Optionally, in another embodiment, there are multiple second tuning structures 20, each second tuning structure 20 having a second fine-tuning structure 60 at one end, and the structures of the second fine-tuning structures 60 on each second tuning structure 20 are different; in step S220, applying pressure to the second part 2012 through the second fine-tuning structure 60 at one end of the second tuning structure 20 to deform the deformation region 201 includes:

[0142] This causes one of the second tuning structures 20 to apply pressure to the second part 2012 through its own second fine-tuning structure 60;

[0143] The second tuning structure 60 is replaced with another second tuning structure 20 having a different structure, and the other second tuning structure 20 applies pressure to the deformation region 201 through its own second fine-tuning structure 60.

[0144] As can be seen from the above, by replacing different second tuning structures 20, forces can be applied to the deformation region 201 through the second fine-tuning structures 60 with different structures, and multiple fine-tuning can also be achieved.

[0145] In another embodiment, one end of the first tuning structure 10 may be provided with a first fine-tuning structure, the contact area when the first fine-tuning structure directly contacts the first portion 2011 is smaller than the contact area when the first tuning structure 10 directly contacts the first portion 2011; in step S100, the first tuning structure 10 of the tuning component 100 applies force to the first portion 2011 of the deformation region 201 to cause the deformation region 201 to deform, including:

[0146] S110, apply pressure to the first part 2011 at the end of the first tuning structure 10 without the first fine-tuning structure, or apply pressure to the first part 2011 using the first tuning structure 10 without the first fine-tuning structure, so that the deformation region 201 deforms.

[0147] S120, the first tuning structure 10, having a first fine-tuning structure at one end, applies pressure to the first part 2011 through the first fine-tuning structure, so that the deformation region 201 deforms.

[0148] In this case, step S200 may or may not include steps S210 and S220; when step S200 does not include steps S210 and S220, the order of steps S110 and S200 is not limited, and step S120 may be performed last; when step S200 includes steps S210 and S220, either step S120 or step S220 may be performed last, and the order of the remaining steps is not limited.

[0149] Optionally, step S120 can also refer to step S220, which includes steps S221 and S222, as described above, and will not be repeated here.

[0150] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A tuning assembly for adjusting the resonant frequency of a filter, the filter comprising a cavity and a cover plate, the cavity or the cover plate having a deformable region, characterized in that, The tuning component includes: A first tuning structure is configured to apply force to a first portion of the deformable region to cause deformation of the first portion; and A second tuning structure is movable relative to the first tuning structure; the second tuning structure is used to apply force to a second portion of the deformable region to cause the second portion to deform. The second part is located at a different position than the first part, and the thickness of the first part is greater or less than the thickness of the second part; the deformation region is made of a ductile metal material, and the deformation region can produce different deformations in the first part and the second part.

2. The tuning component according to claim 1, characterized in that: The tuning assembly further includes a fixed structure, wherein the first tuning structure is movably disposed on the fixed structure.

3. The tuning component according to claim 2, characterized in that: The fixing structure has a first through hole, and the first tuning structure passes through the first through hole.

4. The tuning assembly according to claim 3, characterized in that: The inner wall of the first through hole is provided with an internal thread, and the outer wall of the first tuning structure is provided with an external thread, wherein the external thread and the internal thread are threadedly engaged.

5. The tuning assembly according to claim 4, characterized in that: The first tuning structure is provided with an auxiliary screwing structure.

6. The tuning assembly according to claim 2, characterized in that: The fixing structure is provided with a mounting part, which is used to mount the fixing structure onto the cavity or the cover plate.

7. The tuning assembly according to claim 1, characterized in that: The second tuning structure is movably disposed on the first tuning structure.

8. The tuning assembly according to claim 7, characterized in that: The first tuning structure has a second through hole, and the second tuning structure passes through the second through hole.

9. The tuning assembly according to claim 8, characterized in that: The inner wall of the second through hole is provided with at least one limiting part, and the outer wall of the second tuning structure is uniformly provided with multiple limiting mating parts; or, the inner wall of the second through hole is uniformly provided with multiple limiting parts, and the outer wall of the second tuning structure is provided with at least one limiting mating part; the limiting part and the limiting mating part are mutually limiting and mating to restrict the second tuning structure from rotating relative to the first tuning structure in the second through hole, while allowing the second tuning structure to move relative to the first tuning structure along the axial direction of the second through hole; and / or The first tuning structure is a ring structure, the second tuning structure is a column structure, and the axis of the second tuning structure coincides with the axis of the first tuning structure.

10. The tuning assembly according to any one of claims 1 to 9, characterized in that: The first tuning structure is used to apply pressure to the first part to cause the first part to deform; one end of the first tuning structure is provided with a first fine-tuning structure, the first tuning structure can apply pressure to the first part through the first fine-tuning structure, and the contact area when the first fine-tuning structure is in direct contact with the first part is smaller than the contact area when the first tuning structure is in direct contact with the first part. and / or The second tuning structure is used to apply pressure to the second part, causing the second part to deform; One end of the second tuning structure is provided with a second fine-tuning structure. The second tuning structure can apply pressure to the second part through the second fine-tuning structure, and the contact area when the second fine-tuning structure is in direct contact with the second part is smaller than the contact area when the second tuning structure is in direct contact with the second part.

11. The tuning assembly according to claim 10, characterized in that: The first tuning structure includes a first main body and a first head, the first head being detachably disposed on the first main body, and the first fine-tuning structure being disposed on the first head on a side opposite to the first main body. and / or The second tuning structure includes a second main body and a second head, the second head being detachably disposed on the second main body, and the second fine-tuning structure being disposed on the side of the second head opposite to the second main body.

12. A filter adapted to adjust the resonant frequency using a tuning component as described in any one of claims 1 to 11, the filter comprising: cavity; as well as A cover plate, which covers the opening of the cavity; The feature is that the cavity or the cover plate has a deformable region, the deformable region is made of a plastic metal material, the deformable region has a first part and a second part, the position of the second part is different from the position of the first part, and the thickness of the first part is greater than or less than the thickness of the second part; The first part is used to apply force to the first tuning structure of the tuning assembly, and the second part is used to apply force to the second tuning structure of the tuning assembly. The deformation region can produce different deformations in the first part and the second part.

13. The filter according to claim 12, characterized in that: The first part is arranged in a ring shape, and the second part is located inside the first part.

14. A tuning method suitable for adjusting the resonant frequency of a filter using a tuning assembly as described in any one of claims 1 to 11, the filter comprising a cavity and a cover plate, the cavity or the cover plate having a deformable region, characterized in that, The tuning method includes: The first tuning structure of the tuning component applies force to a first portion of the deformable region to cause the first portion to deform. The second tuning structure of the tuning assembly applies force to the second part of the deformation region to cause the second part to deform; wherein the position of the second part is different from the position of the first part, the thickness of the first part is greater than or less than the thickness of the second part, the deformation region is made of a ductile metal material, and the deformation region is capable of producing different deformation amounts in the first part and the second part.

15. The tuning method according to claim 14, characterized in that, One end of the second tuning structure is provided with a second fine-tuning structure, and the contact area when the second fine-tuning structure directly contacts the second part is smaller than the contact area when the second tuning structure directly contacts the second part. The method of applying force to a second portion of the deformed region by the second tuning structure of the tuning assembly to cause deformation of the second portion includes: Pressure is applied to the second part by one end of the second tuning structure that does not have the second fine-tuning structure, or by applying pressure to the second part using the second tuning structure that does not have the second fine-tuning structure, so that the second part deforms. The second tuning structure applies pressure to the second part through the second fine-tuning structure at one end, causing the second part to deform.

16. The tuning method according to claim 15, characterized in that, The method of applying pressure to the second part through the second fine-tuning structure at one end of the second tuning structure to cause deformation of the second part includes: Position the second tuning structure at a first position relative to the first tuning structure, and apply pressure to the second portion through the second fine-tuning structure; The second tuning structure is rotated about its own axis by a preset angle so that the second tuning structure is in a second position relative to the first tuning structure, and the second tuning structure applies pressure to the second part through the second fine-tuning structure; wherein the second position is different from the first position. Alternatively, the number of second tuning structures may be multiple, and the structure of the second fine-tuning structure on each second tuning structure may be different; the step of applying pressure to the second part through the second fine-tuning structure at one end of the second tuning structure to cause deformation of the second part includes: This causes one of the second tuning structures to apply pressure to the second part through its own second fine-tuning structure; The second tuning structure is replaced with another second tuning structure, and this other second tuning structure applies pressure to the second part through its own second fine-tuning structure.

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