Filter and communication device

Abstract

The application relates to the communication technical field, and provides a filter and a communication device, the filter comprising: a shell structure, an internal resonant cavity is formed in the shell structure, the shell structure comprises oppositely arranged connecting parts and deformation parts; a resonator is located in the resonant cavity and is connected to the connecting parts or the deformation parts; and an adjusting piece is located in the resonant cavity and is connected to the connecting parts and the deformation parts; wherein a through hole is formed in the connecting parts or the deformation parts, and the adjusting piece is located in the through hole; the adjusting piece can be stressed to move relative to the connecting parts and / or the deformation parts, thereby driving the deformation parts to deform. The filter provided by the application can not adopt the scheme that a tuning screw is threadedly connected with a cover plate, a new tuning mode is provided, more possibilities are provided for improving the problem that the threaded connection between the tuning screw and the cover plate easily influences the performance of the filter, and the performance index of the filter is improved in the case of facilitating tuning.

Description

Technical Field

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

[0002] A filter typically includes a cavity, a cover plate covering the cavity, a resonant rod disposed inside the cavity, and a tuning screw threaded to the cover plate. By rotating the tuning screw, the distance between the tuning screw and the resonant rod is changed, thereby adjusting the resonant frequency of the filter.

[0003] Because filters typically use this fixed tuning method, the tuning options are limited. Furthermore, in this tuning method, the tuning screw needs to be engaged with the cover plate via a threaded structure, which can easily generate metal shavings that fall into the cavity and affect the filter's performance. Summary of the Invention

[0004] This application provides a filter and a communication device that can improve the technical problem that the single tuning method of the filter is easy to affect the performance of the filter.

[0005] In a first aspect, embodiments of this application provide a filter, the filter comprising:

[0006] A shell structure having a resonant cavity formed inside, the shell structure including a connecting part and a deformable part arranged opposite to each other;

[0007] A resonator, located within the resonant cavity and connected to the connecting portion or the deformable portion; and

[0008] An adjustment element is located inside the resonant cavity and is connected to the connecting portion and the deformable portion;

[0009] The connecting part or the deformable part is provided with a through hole, and the adjusting member is located at the through hole; the adjusting member can be subjected to force to move relative to the connecting part and / or the deformable part, thereby causing the deformable part to deform.

[0010] The technical solutions described in this application have at least the following technical effects or advantages:

[0011] The filter provided in this application embodiment can apply force to the adjusting member at the through hole, so that the adjusting member moves relative to the connecting part and / or the deformable part, thereby causing the deformable part to deform. The deformation of the deformable part can change the relative position between the deformable part and the resonator (in this case, the resonator is connected to the connecting part), or change the relative position between the resonator and the connecting part (in this case, the resonator is connected to the deformable part), thereby adjusting the resonant frequency. It eliminates the need for the tuning screw and cover plate threaded connection scheme, thus providing a new tuning method. This provides more possibilities for improving the problem that the tuning screw and cover plate threaded connection easily affects the filter performance, and realizes the improvement of filter performance indicators while facilitating tuning.

[0012] In some embodiments, the resonator is connected to the connecting portion, and the adjusting member is connected to the connecting portion via the resonator; or

[0013] The resonator is connected to the deformable part, and the adjusting member is connected to the deformable part through the resonator.

[0014] In some embodiments, the resonator has a threaded hole, and the adjusting member is threadedly connected to the threaded hole.

[0015] In some embodiments, the resonator includes:

[0016] A resonant tube, connected to the connecting portion or the deformed portion, the resonant tube having an opening; and

[0017] A fixing element is located inside the opening and fixed to the resonant tube;

[0018] The adjusting member is connected to the fixing member.

[0019] In some embodiments, the adjusting member includes a first part and a second part connected to each other, the first part being connected to one of the connecting part and the deformable part having the through hole, and the second part being connected to the other of the connecting part and the deformable part;

[0020] The first part is made of a metallic material for electromagnetically sealing the through-hole, and the second part is made of plastic; or

[0021] Both the material of the first part and the material of the second part include plastic.

[0022] In some embodiments, the through hole is provided on the deformable portion, and the adjusting member includes:

[0023] The first abutting portion is located outside the resonant cavity and is used to abut against the side of the deformable portion away from the connecting portion; and

[0024] A connecting rod is located inside the resonant cavity. One end of the connecting rod passes through the through hole and is connected to the first abutting part, while the other end of the connecting rod is connected to the connecting part.

[0025] In some embodiments, the first abutting portion is fixedly connected to the connecting rod, and the end of the connecting rod away from the connecting portion is provided with a force-applying structure.

[0026] In some embodiments, the adjusting member further includes a second abutting portion, which is located within the resonant cavity and connected to the connecting rod, for abutting against the side of the deformable portion facing the connecting portion.

[0027] In some embodiments, the connecting rod is clearance-fitted with the through hole; and / or

[0028] The first abutting part abuts against the deformable part, and the second abutting part is in clearance fit with the deformable part; or, the second abutting part abuts against the deformable part, and the first abutting part is in clearance fit with the deformable part.

[0029] In some embodiments, the first abutting portion has a first threaded through hole, and one end of the connecting rod away from the connecting portion passes through the through hole and is threadedly connected to the first threaded through hole; and / or, the second abutting portion has a second threaded through hole, and one end of the connecting rod facing the connecting portion passes through the through hole and is threadedly connected to the second threaded through hole.

[0030] In some embodiments, the end of the connecting rod away from the connecting portion is provided with a force-applying structure.

[0031] In some embodiments, the end of the adjusting member away from the connecting portion is used to abut against the side of the deformable portion facing the connecting portion.

[0032] In some embodiments, the deformable portion has the through hole, and the end of the adjusting member away from the connecting portion is located at the through hole; the end of the adjusting member away from the connecting portion is provided with a force-applying structure.

[0033] In some embodiments, the end face of the adjusting member away from the connecting portion is located inside the resonant cavity and is used to abut against the side of the deformable portion facing the connecting portion.

[0034] Secondly, embodiments of this application provide a communication device, which includes the filter described in any of the above embodiments.

[0035] It is understandable that the beneficial effects of the second aspect mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments or related technologies 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 A cross-sectional schematic diagram of a filter provided in related technologies;

[0038] Figure 2 This is a schematic diagram of the structure of a first type of filter provided in some embodiments of this application;

[0039] Figure 3 for Figure 2 A schematic diagram of the cross-section of the filter shown;

[0040] Figure 4 for Figure 2 A schematic diagram of the filter's decomposition is shown below;

[0041] Figure 5 A cross-sectional schematic diagram of a second type of filter provided in some embodiments of this application;

[0042] Figure 6 A cross-sectional schematic diagram of a third type of filter provided in some embodiments of this application;

[0043] Figure 7 A cross-sectional schematic diagram of a fourth type of filter provided in some embodiments of this application;

[0044] Figure 8 This is a schematic diagram of the structure of a fifth filter provided in some embodiments of this application;

[0045] Figure 9 for Figure 8 A schematic diagram of the cross-section of the filter shown;

[0046] Figure 10 for Figure 8 A schematic diagram of the filter's decomposition is shown below;

[0047] Figure 11 This is a schematic diagram of the structure of a sixth filter provided in some embodiments of this application;

[0048] Figure 12 for Figure 11 A schematic diagram of the cross-section of the filter shown;

[0049] Figure 13 for Figure 11 A schematic diagram of the filter's decomposition is shown below;

[0050] Figure 14A cross-sectional schematic diagram of a seventh filter provided in some embodiments of this application.

[0051] The following are the labeling elements in the figure:

[0052] 01. Resonant rod; 02. Tuning screw;

[0053] 100. Filter; 10. Housing structure; 101. Resonant cavity; 11. Cavity; 12. Cover plate; 111. Connecting part; 112. Deformable part; 20. Resonator; 30. Adjusting component; 102. Through hole; 201. Threaded hole; 21. Resonant tube; 210. Opening hole; 22. Fixing component; 31. First abutment part; 32. Connecting rod; 301. Force-applying structure; 33. Second abutment part; 3101. First threaded through hole; 1001. Groove; 1121. Boss structure. Detailed Implementation

[0054] 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.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0056] In the description of the embodiments of this application, the terms "inner", "outer", "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0057] The terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. For example, "first abutment" and "second abutment" are merely used to distinguish different abutment parts and do not limit their order or number. A first abutment part can also be named a second abutment part, and a second abutment part can also be named a first abutment part, without departing from the scope of the various described embodiments. Furthermore, the terms "first," "second," etc., do not imply that the indicated features must be different.

[0058] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," 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 (which can be abutting or connected by a connecting structure) 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. "Multiple" means at least two, that is, two or more; "multiple" means at least two, that is, two or more.

[0059] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0060] It should be noted that in this application, the words "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of words such as "in some embodiments," "exemplarily," and "for example" is intended to present related concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of this application. The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0061] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments.

[0062] As a frequency selection device, filters are widely used in the field of communication to select communication signals and filter out noise or interference signals outside the communication signal frequency. That is, they can allow useful signals to pass through with as little attenuation as possible, while attenuating useless signals as much as possible.

[0063] Please see Figure 1A filter typically includes a cavity, a cover plate covering the cavity, a resonant rod 01 disposed inside the cavity, and a tuning screw 02 threaded to the cover plate. By rotating the tuning screw 02, the distance between the tuning screw 02 and the resonant rod 01 is changed, thereby altering the capacitance C formed between the tuning screw 02 and the resonant rod 01, and thus adjusting the resonant frequency of the filter.

[0064] Because filters typically employ this fixed tuning method, the tuning options are limited. Furthermore, in this method, the tuning screw 02 and the cover plate are connected via a threaded structure. Firstly, this inevitably introduces contact resistance, affecting insertion loss and intermodulation. Secondly, it easily generates burrs, a critical factor for high-power arcing. Since the production technology bottleneck of burrs is currently difficult to overcome, the product quality of filters is difficult to continuously improve. Thirdly, during the tuning screw 02 adjustment process, metal debris is easily generated. This debris enters the cavity and produces intermodulation products, reducing product performance. Fourthly, the production and debugging process requires the preparation of numerous tuning screws 02 of different lengths, which are then replaced according to the filter's needs. Pre-installing and replacing the tuning screws 02 consumes a significant amount of time, reducing production efficiency and increasing production costs.

[0065] Based on this, in order to improve the technical problem that the tuning method of the filter is singular and easily affects the performance of the filter, this application proposes the following solution.

[0066] Please see Figures 2 to 4 This application provides a filter 100, which includes a housing structure 10, a resonator 20, and an adjustment component 30, wherein:

[0067] The shell structure 10 has a resonant cavity 101 formed inside, and the shell structure 10 includes a connecting part 111 and a deformable part 112 arranged opposite to each other.

[0068] The resonator 20 is located inside the resonant cavity 101 and is connected to the connecting part 111 or the deformable part 112.

[0069] The adjustment member 30 is located inside the resonant cavity 101 and is connected to the connecting part 111 and the deformable part 112.

[0070] The connecting part 111 or the deformable part 112 is provided with a through hole 102, and the adjusting member 30 is located at the through hole 102. The adjusting member 30 can be subjected to force to move relative to the connecting part 111 and / or the deformable part 112, thereby causing the deformable part 112 to deform.

[0071] It can be understood that the shell structure 10 is a structure with an internal cavity. For example, the shell structure 10 may include a cavity 11 and a cover plate 12, with the cover plate 12 covering the opening of the cavity 11 to form a resonant cavity 101. Figure 2 and Figure 3 This is exemplarily illustrated in the diagram; it may also include two cavities, which are interlocked through their openings to form a resonant cavity 101; or it may include two cover plates and a cavity with only sidewalls, with the two cover plates respectively covering the two openings of the cavity to form the resonant cavity 101. The housing structure 10 may be made of a metallic material, or it may be made by setting a metallic layer on a non-metallic substrate, which facilitates the formation of an electromagnetically sealed resonant cavity 101.

[0072] The connecting portion 111 is part of the housing structure 10; for example, the connecting portion 111 may be part of the cavity 11. Figure 3 (This is exemplarily shown in the image), and it can also be part of the cover plate 12. The connecting part 111 can be a structure of various regular or irregular shapes; for example, it can be at least a part of the wall of the shell structure 10, i.e., generally plate-shaped. Figure 3 The example shown is that the connecting part 111 is the bottom wall structure of the shell structure 10; it can also be a protruding structure protruding inside or outside the resonant cavity 101; it can also be a recessed structure recessed on the shell structure 10, but is not limited thereto.

[0073] The deformable portion 112 is also part of the housing structure 10; for example, the deformable portion 112 may be part of the cover plate 12. Figure 2 and Figure 3 (This is exemplarily illustrated in the image), and it can also be part of the cavity 11; for example, when the cover plate of the shell structure 10 includes a first cover plate and a second cover plate, the first cover plate can be located outside the second cover plate as a main cover plate, and the second cover plate can be located inside as a deformable cover plate, and the deformable part 112 can be part of the second cover plate. The deformable part 112 is a structure that can deform under stress, that is, it is more likely to deform under stress than other parts of the shell structure 10. It can be that a groove 1001 is formed on the shell structure 10, so that the bottom of the groove 1001 forms the deformable part 112. Figure 2 and Figure 3 This situation is illustrated by example; the deformable portion 112 can also be formed when the thickness of the portion where the deformable portion 112 is located is less than the thickness of other portions of the shell structure 10, but it is not limited to this. When the deformable portion 112 deforms, it can be a plastic deformation, and of course, in some other embodiments it can be an elastic deformation.

[0074] It can be understood that the resonator 20 is a structure used to generate resonance in the resonant cavity 101. It can be a variety of types of resonators, such as a metal coaxial resonator, a ceramic dielectric resonator, a sheet stripline resonator, etc., but is not limited to these. Figure 3 and Figure 4The example shown is a case where the resonator 20 is a metal coaxial resonator.

[0075] It is understood that the adjusting member 30 is a structural member that can be connected to the connecting part 111 and the deformable part 112. It can be a structure with various regular or irregular shapes, such as a rod-shaped structure (e.g., screw, bolt, thread, etc., but not limited to this), a column-shaped structure, a strip-shaped structure, etc., but not limited to this. It can be a single part or an assembly including multiple parts.

[0076] Since the adjusting member 30 can move relative to the connecting part 111 and / or the deformable part 112 under force, that is, move relative to at least one of the connecting part 111 and the deformable part 112, the adjusting member 30 can be adjusted to be connected to at least one of the connecting part 111 and the deformable part 112. Various adjustable connection methods can be adopted, such as threaded fit, snap fit including multiple mating positions, interference fit, etc., but not limited to these.

[0077] The adjustment member 30 being located at the through hole 102 means that the adjustment member 30 is at least partially and substantially located at the through hole 102, so that a force can be applied to the adjustment member 30 at the through hole 102, thereby causing the adjustment member 30 to move. The adjustment member 30 may be entirely located within the resonant cavity 101 and on one side of the through hole 102, i.e., not extending into the through hole 102; the adjustment member 30 may also partially extend into the through hole 102 but not extend to the outside of the resonant cavity 101; the adjustment member 30 may also pass through the through hole 102 and extend to the outside of the resonant cavity 101.

[0078] As can be seen from the above, the filter 100 provided in this application embodiment can apply force to the adjusting member 30 at the through hole 102 (the force can be applied to the adjusting member 30 by means of a tool or by hand), so that the adjusting member 30 moves relative to the connecting part 111 and / or the deformable part 112, thereby causing the deformable part 112 to deform; when the resonator 20 is connected to the connecting part 111, the deformation of the deformable part 112 can change the relative position between the deformable part 112 and the resonator 20, for example, the distance between the deformable part 112 and the resonator 20 changes, thereby causing the capacitance C formed between them to change (for example, when the distance between the deformable part 112 and the resonator 20 decreases, the capacitance C decreases). As capacitance C increases, the frequency decreases; when the distance between the deformable part 112 and the resonator 20 increases, capacitance C decreases and the frequency increases; when the resonator 20 is connected to the deformable part 112, the deformation of the deformable part 112 can change the relative position between the resonator 20 and the connecting part 111. For example, the distance between the resonator 20 and the connecting part 111 changes, thereby changing the size of the capacitance C formed between them (for example, when the distance between the resonator 20 and the connecting part 111 decreases, capacitance C increases and the frequency decreases; when the distance between the resonator 20 and the connecting part 111 increases, capacitance C decreases and the frequency increases), thereby adjusting the resonant frequency of the filter 100.

[0079] Therefore, the filter 100 provided in this application embodiment eliminates the need for a threaded connection between the tuning screw and the cover plate, thus providing a new tuning method. This offers more possibilities for improving the performance of the filter, which is easily affected by the threaded connection between the tuning screw and the cover plate. It achieves improved filter performance while facilitating tuning. For example, it helps to mitigate problems such as burrs and metal debris from the threaded connection between the tuning screw and the cover plate affecting the intermodulation stability of the filter and causing high-power arcing. This improves the intermodulation stability of the filter 100 and reduces the likelihood of high-power arcing, thereby increasing the product yield of the filter 100. Furthermore, it eliminates the need to prefabricate a large number of tuning screws of different lengths, reducing material types, lowering costs, and enhancing the product competitiveness of the filter 100.

[0080] In some embodiments, please refer to Figure 3 and Figure 5 The resonator 20 is connected to the connecting part 111; the adjusting member 30 is connected to the connecting part 111 through the resonator 20, and the adjusting member 30 is connected to the resonator 20.

[0081] It is understood that the resonator 20 can be connected to the connecting part 111 in various ways. For example, the resonator 20 and the connecting part 111 can be a single-piece structure. Figure 3 This is exemplarily shown in the example. Of course, the resonator 20 and the connecting part 111 can also be formed separately and then connected. Figure 5 (This is an example of such a situation), for example, screw connections, riveting, plug-in connections, etc. can be used, but it is not limited to these.

[0082] Compared to the adjustment member 30 being directly connected to the connecting part 111, this configuration, where the adjustment member 30 is connected to the connecting part 111 via the resonator 20, has several advantages. First, it shortens the length of the adjustment member 30, saving material and reducing weight. Second, the adjustment member 30 has a larger movement space when it is subjected to force relative to the connecting part 111 and / or the deformable part 112. Third, the resonator 20 not only has the original function of generating resonance but also has the function of connecting and cooperating with the adjustment member 30 to support it, meaning one component plays a dual role, which simplifies the structure, improves integration, and facilitates the lightweighting and miniaturization of the filter 100. Fourth, the deformable part 112 and the resonator 20 are positioned opposite each other, making the change in the relative distance between the deformable part 112 and the resonator 20 more obvious after deformation, which helps to increase the frequency adjustment range.

[0083] Of course, in some other embodiments, when the resonator 20 is connected to the connecting portion 111, the adjusting member 30 can also be directly connected to the connecting portion 111. For example, the resonator 20 can be a hollow tubular structure, and the adjusting member 30 can pass through the internal space of the resonator 20 and be connected to the connecting portion 111. For example, the adjusting member 30 can be located on one side outside the resonator 20 and directly connected to the connecting portion 111.

[0084] It should be noted that the resonator 20 is not limited to being connected to the connection portion 111. Alternatively, in some other embodiments, please refer to... Figure 6 The resonator 20 can also be connected to the deformable part 112. In this case, the adjusting member 30 can be connected to the deformable part 112 through the resonator 20, which also has the effect of the adjusting member 30 being connected to the connecting part 111 through the resonator 20 in the above embodiment; of course, the adjusting member 30 can also be directly connected to the deformable part 112. For example, the resonator 20 can be a hollow tubular structure, and the adjusting member 30 can be inserted into the internal space of the resonator 20 and connected to the deformable part 112. Or, for example, the adjusting member 30 can be located on one side outside the resonator 20 and directly connected to the deformable part 112.

[0085] Optionally, in some embodiments, please refer to Figure 3 and Figure 5 The resonator 20 has a threaded hole 201, and the adjusting member 30 is threadedly connected to the threaded hole 201.

[0086] It can be understood that the threaded hole 201 is a hole with internal threads on its inner wall, which can be a through hole or a blind hole. The outer surface of the adjusting member 30 is correspondingly provided with external threads for threaded engagement with the internal threads of the threaded hole 201.

[0087] With this configuration, by applying force to the adjusting member 30 to rotate it, the adjusting member 30 can be moved relative to the resonator 20, thereby causing the deformable part 112 to deform. Compared to other adjustable connection methods, the threaded connection not only facilitates adjusting the movement range of the adjusting member 30 and fine-tuning the resonant frequency of the filter 100, but also improves the stability of the position of the adjusting member 30 after adjustment, thereby improving the stability of the deformation state of the deformable part 112 and thus improving the overall stability of the filter 100. If the adjusting member 30 is directly pressed to deform the deformable part 112, the deformable part 112 may recover or spring back after the pressing operation, resulting in an unstable deformation state.

[0088] Optionally, in some embodiments, please refer to Figure 3 and Figure 5 The resonator 20 can be a one-piece molded structure.

[0089] It should be noted that the resonator 20 is not limited to a single-piece structure. Alternatively, in some other embodiments, please refer to... Figure 7 The resonator 20 includes a resonant tube 21 and a fixing member 22. The resonant tube 21 is connected to the connecting part 111 or the deformable part 112, and the resonant tube 21 has an opening 210. The fixing member 22 is located in the opening 210 and is fixed to the resonant tube 21. The adjusting member 30 is connected to the fixing member 22.

[0090] It is understood that the resonant tube 21 can be a tubular resonant structure of various regular or irregular shapes, and the opening hole 210, i.e., the open hole, can be a blind hole or a through hole. The fixing member 22 is a structural component used to connect with the adjusting member 30, and can be a structure of various regular or irregular shapes, such as a tubular structure. Figure 7The example shown is a columnar structure, block structure, etc., but is not limited to these. The specific configuration can be selectively set according to the connection method with the adjusting member 30. The fixing member 22 can be fixed to the resonant tube 21 in various ways, such as bonding, welding, pressing, interference fit, threaded fit, etc., but is not limited to these. The fixing member 22 can be made of metallic or non-metallic materials. For example, when the material of the part of the adjusting member 30 used to connect with the fixing member 22 is an insulating material, the fixing member 22 can be made of metallic material; conversely, when the material of the part of the adjusting member 30 used to connect with the fixing member 22 is a metallic material, the fixing member 22 can be made of insulating material. For example, when the material of the part of the adjusting member 30 that connects to the fixing member 22 is a metal material and the fixing member 22 is an insulating material, if the adjusting member 30 moves and causes the deformable part 112 to deform, not only will the deformation of the deformable part 112 affect the resonant frequency of the filter 100, but the metal part of the adjusting member 30 will also affect the resonant frequency due to the change in its depth in the resonant cavity 101. The adjustment range and adjustment effect of the two on the resonant frequency can be superimposed, which is beneficial to increasing the tuning range. The resonator 20 is an assembly including the resonant tube 21 and the fixing member 22.

[0091] With this configuration, when it is inconvenient to connect the resonant tube 21 to the adjustment component 30 (for example, the inner diameter of the opening 210 of the resonant tube 21 is larger than the outer diameter of the adjustment component 30, or the resonator 20 is manufactured by a stretching process and cannot be machined into a structure for fixed connection with the adjustment component 30), a new matching method is provided by setting a fixing component 22 for connection with the adjustment component 30 inside the resonant tube 21. This method is more flexible, facilitates the use of the original resonant tube 21, and eliminates the need to manufacture a separate resonant tube, thus reducing costs.

[0092] For example, please refer to Figure 7 When a threaded hole 201 is provided on the resonator 20, the threaded hole 201 can be provided on the fixing member 22, and the adjusting member 30 can be threadedly engaged with the fixing member 22.

[0093] In some embodiments, the adjusting member 30 includes a first part and a second part connected together. The first part is connected to one of the connecting part 111 and the deformable part 112, which has a through hole 102. The second part is connected to the other of the connecting part 111 and the deformable part 112. The material of the first part includes a metallic material for electromagnetically sealing the through hole 102, i.e., for preventing signals inside the resonant cavity 101 from leaking to the outside through the through hole 102. The material of the second part includes plastic.

[0094] It is understood that both the first and second parts are part of the adjusting component 30, and both can be regular or irregular in shape. The metal material can be various pure metals or alloys, such as aluminum, copper, iron, steel, etc., but is not limited to these. The plastic can be various types of plastic materials, such as polyethylene, polypropylene, polyvinyl chloride, polytetrafluoroethylene, polyamide, etc., but is not limited to these. The first and second parts can be molded by injection molding, or when the adjusting component 30 is made of plastic, a portion of the surface of the adjusting component 30 can be covered with a metal layer of a metallic material to form the first part, and the portion of the adjusting component 30 not covered with the metal layer forms the second part; of course, there are many ways to mold the first and second parts, and other methods can also be used.

[0095] With this configuration, the first part of the adjusting member 30, which is used to connect to the one with the through hole 102 in the connecting part 111 and the deformable part 112, is made of metal, which can electromagnetically seal the through hole 102. This facilitates the application of force to the adjusting member 30 at the through hole 102 and improves the electromagnetic sealing of the resonant cavity 101. The second part of the adjusting member 30 is made of plastic, which further reduces the possibility of burrs or debris being generated when the second part is connected to the connecting part 111 or the deformable part 112 and moves relative to it. This is beneficial for further improving the intermodulation stability of the filter 100 and reducing the possibility of high-power arcing.

[0096] Of course, in some other embodiments, both the materials of the first part and the second part may include plastic. For example, the material of the adjusting member 30 may be entirely plastic, or it may include some metal materials. This configuration can further improve the intermodulation stability of the filter 100 and reduce the possibility of high-power arcing. Even if the first part of the adjusting member 30, which is connected to the connecting part 111 and the deformable part 112 with the through hole 102, does not close the through hole 102, the impact on the signal is relatively small.

[0097] In some embodiments, please refer to Figures 2 to 6 The deformable part 112 has a through hole 102; the adjusting member 30 includes a first abutting part 31 and a connecting rod 32; the first abutting part 31 is located outside the resonant cavity 101 and is used to abut against the side of the deformable part 112 away from the connecting part 111; the connecting rod 32 is located inside the resonant cavity 101, one end of the connecting rod 32 passes through the through hole 102 and is connected to the first abutting part 31, and the other end of the connecting rod 32 is connected to the connecting part 111.

[0098] It is understood that the first abutment portion 31 can be a structure of various regular or irregular shapes, such as a flange structure, columnar structure, block structure, sheet structure, etc., but is not limited to these. The connecting rod 32 is a generally rod-shaped structure, which can be a rod-shaped structure of various regular or irregular shapes. The first abutment portion 31 and the connecting rod 32 can be an integrally formed structure, or they can be separately formed and connected. For example, the adjusting member 30 can be a screw or bolt, the first abutment portion 31 is the nut part, and the connecting rod 32 is the screw part.

[0099] With this configuration, by applying force to the adjusting member 30, the adjusting member 30 moves relative to the connecting portion 111 and / or the deformable portion 112. When the adjusting member 30 moves toward the connecting portion 111, the first abutting portion 31 drives the deformable portion 112 to move toward the connecting portion 111, causing deformation. This reduces the distance between the deformable portion 112 and the resonator 20, or reduces the distance between the resonator 20 and the connecting portion 111. Optionally, if the deformable portion 112 can undergo elastic deformation, when the adjusting member 30 moves away from the connecting portion 111, the deformable portion 112 can be reset under the action of elastic restoring force, increasing the distance between the deformable portion 112 and the resonator 20, or increasing the distance between the resonator 20 and the connecting portion 111.

[0100] For example, please refer to 3 to Figure 5 The resonator 20 is connected to the connecting part 111, and the adjusting member 30 is threadedly connected to the threaded hole 201 on the resonator 20. By applying a rotational force to the adjusting member 30 at the through hole 102, when the adjusting member 30 rotates clockwise, the adjusting member 30 can move towards the connecting part 111 along the axial direction of the adjusting member 30. The first abutting part 31 drives the deformable part 112 to move towards the connecting part 111 and deform, so as to reduce the distance between the deformable part 112 and the resonator 20. Optionally, if the deformable part 112 can undergo elastic deformation, when a rotational force is applied to the adjusting member 30 to make the adjusting member 30 rotate counterclockwise, the deformable part 112 can be reset under the action of the elastic restoring force, which can increase the distance between the deformable part 112 and the resonator 20.

[0101] Optionally, in some embodiments, please refer to Figure 3 and Figure 4 The first abutment part 31 is fixedly connected to the connecting rod 32, and the end of the connecting rod 32 away from the connecting part 111 is provided with a force-applying structure 301.

[0102] It is understood that the first abutment portion 31 can be fixedly connected to the connecting rod 32 in various ways, such as integral molding, welding, riveting, threaded connection, etc., but not limited to these. The intention is that when the first abutment portion 31 moves, it can drive the connecting rod 32 to move simultaneously. The force-applying structure 301 refers to the structure used by tools or hands to apply force to the first abutment portion 31. For example, it can be a groove structure (e.g., a cross-shaped groove, a straight groove, a quadrilateral groove, a pentagonal groove, an internal hexagonal groove, a plum blossom groove, etc., but not limited to these), a cut-edge structure (e.g., a quadrilateral cut-edge structure, an external hexagonal cut-edge structure, etc., but not limited to these), a protruding structure, etc., but not limited to these.

[0103] With this configuration, by applying force to the force-applying structure 301, the first abutment part 31 and the connecting rod 32 can be moved, and the first abutment part 31 can drive the deformation part 112 to deform, which can improve the convenience of adjusting the adjusting member 30.

[0104] Optionally, in some embodiments, please refer to Figures 8 to 10 The adjusting member 30 also includes a second abutting part 33; the second abutting part 33 is located in the resonant cavity 101 and connected to the connecting rod 32, and is used to abut against the side of the deformable part 112 facing the connecting part 111.

[0105] It is understood that the second abutment portion 33 can be a structure of various regular or irregular shapes, such as a flange structure protruding from the connecting rod 32. Figure 9 and Figure 10 (This is an example of such a case.) It can be a sheet-like structure, a block-like structure, a rod-like structure, etc., but is not limited to these, as long as it can abut against the deformable part 112. The second abutting part 33 and the connecting rod 32 can be an integrally formed structure, or they can be separately formed and connected.

[0106] With this configuration, by applying force to the adjusting member 30, the adjusting member 30 moves relative to the connecting part 111 and / or the deformable part 112. When the adjusting member 30 moves toward the connecting part 111, the first abutting part 31 abuts against the deformable part 112, causing the deformable part 112 to move toward the connecting part 111 and deform, thereby reducing the distance between the deformable part 112 and the resonator 20 or reducing the distance between the resonator 20 and the connecting part 111. When the adjusting member 30 moves away from the connecting part 111, the second abutting part 33 abuts against the deformable part 112, causing the deformable part 112 to move away from the connecting part 111 and deform, thereby increasing the distance between the deformable part 112 and the resonator 20 or increasing the distance between the resonator 20 and the connecting part 111.

[0107] For example, referring to 9, the resonator 20 is connected to the connecting portion 111, and the adjusting member 30 is threadedly connected to the threaded hole 201 on the resonator 20. By applying a rotational force to the adjusting member 30 at the through hole 102, when the adjusting member 30 is rotated clockwise, the adjusting member 30 can move towards the connecting portion 111 along the axial direction of the adjusting member 30. The first abutting portion 31 drives the deformable portion 112 to move towards the connecting portion 111 and deform, thereby reducing the distance between the deformable portion 112 and the resonator 20. When a rotational force is applied to the adjusting member 30, when the adjusting member 30 is rotated counterclockwise, the adjusting member 30 can move away from the connecting portion 111 along the axial direction of the adjusting member 30. The second abutting portion 33 drives the deformable portion 112 to move away from the connecting portion 111 and deform, thereby increasing the distance between the deformable portion 112 and the resonator 20.

[0108] Optionally, please refer to Figure 9 The connecting rod 32 and the through hole 102 are in clearance fit, meaning there is a gap between the connecting rod 32 and the through hole 102.

[0109] With this configuration, when the connecting rod 32 moves relative to the through hole 102, the friction between the connecting rod 32 and the inner wall of the through hole 102 can be reduced, thereby reducing the possibility of debris generation and improving the smoothness of the relative movement between the two.

[0110] Optionally, please refer to Figure 9 The first abutting part 31 abuts against the deformable part 112, and the second abutting part 33 is in clearance fit with the deformable part 112, that is, there is a gap between the second abutting part 33 and the deformable part 112. Alternatively, the second abutting part 33 abuts against the deformable part 112, and the first abutting part 31 is in clearance fit with the deformable part 112, that is, there is a gap between the first abutting part 31 and the deformable part 112.

[0111] With this configuration, when the first abutting part 31 abuts against the deformable part 112 and moves relative to the deformable part 112, the friction between the second abutting part 33 and the deformable part 112 can be reduced, or when the second abutting part 33 abuts against the deformable part 112 and moves relative to the deformable part 112, the friction between the first abutting part 31 and the deformable part 112 can be reduced, thereby reducing the possibility of debris generation and improving the smoothness of the movement of the first abutting part 31 and the second abutting part 33 relative to the deformable part 112.

[0112] Optionally, please refer to Figure 9 and Figure 10 The first abutting part 31 has a first threaded through hole 3101, and the end of the connecting rod 32 away from the connecting part 111 passes through the through hole 102 and is threadedly connected to the first threaded through hole 3101.

[0113] It can be understood that the first threaded through hole 3101 is a through hole with an internal thread on its inner wall, and the outer surface of the end of the connecting rod 32 away from the connecting part 111 is correspondingly provided with an external thread for threading with the internal thread of the first threaded through hole 3101.

[0114] With this configuration, the connecting rod 32 can first pass through the through hole 102 from one side of the deformable part 112 and extend to the other side of the deformable part 112. Then, the first abutting part 31 can be connected to the connecting rod 32. The first abutting part 31 and the connecting rod 32 are detachably connected, which facilitates the assembly and disassembly between the connecting rod 32 and the deformable part 112. Especially when the second abutting part 33 is fixedly provided on the connecting rod 32, the second abutting part 33 cannot pass through the through hole 102. By using the first abutting part 31 and the connecting rod 32 to be detachably threaded, this problem is solved well, which makes it easier for the connecting rod 32, the second abutting part 33 and the first abutting part 31 to be assembled on the deformable part 112.

[0115] Similarly, in some other embodiments, the second abutment portion 33 may have a second threaded through hole, and one end of the connecting rod 32 facing the connecting portion 111 passes through the through hole 102 and is threadedly connected to the second threaded through hole, which can also realize the connection between the second abutment portion 33 and the connecting rod 32. It can be understood that the second threaded through hole is a through hole with internal threads on its inner wall, and the connecting rod 32 is correspondingly provided with external threads for threaded engagement with the internal threads of the second threaded through hole.

[0116] Optionally, please refer to Figure 9 and Figure 10 The end of the connecting rod 32 away from the connecting part 111 is provided with a force-applying structure 301. By applying force to the force-applying structure 301, the connecting rod 32 can be moved. The connecting rod 32 can drive the first abutting part 31 and the second abutting part 33 to move. The first abutting part 31 or the second abutting part 33 can drive the deformable part 112 to deform, which can improve the convenience of adjusting the adjusting part 30.

[0117] Optionally, in some embodiments, please refer to Figure 3 and Figure 4 ,as well as Figure 9 and Figure 10 The deformable portion 112 has a protruding annular boss structure 1121, which surrounds the through hole 102. The boss structure 1121 can be located on the side of the deformable portion 112 away from the connecting portion 111 and is used to abut against the first abutting portion 31. Alternatively, the boss structure 1121 can be located on the side of the deformable portion 112 facing the connecting portion 111 and is used to abut against the second abutting portion 33.

[0118] With this configuration, the boss structure 1121 can increase the structural strength at the connection between the deformable part 112 and the first abutting part 31 or the second abutting part 33, thereby reducing the possibility of defects such as cracking of the deformable part 112 at the through hole 102.

[0119] In the above embodiments, it is described that the adjusting member 30 can deform the deformable part 112 by abutting the first abutting part 31 against the side of the deformable part 112 away from the connecting part 111. However, the adjusting member 30 may also deform the deformable part 112 without applying force to the side of the deformable part 112 away from the connecting part 111.

[0120] In other embodiments, please refer to Figure 7 , Figures 11 to 14 The end of the adjusting member 30 away from the connecting part 111 is used to abut against the side of the deformable part 112 facing the connecting part 111.

[0121] With this configuration, by applying force to the adjusting member 30, the adjusting member 30 moves relative to the connecting portion 111 and / or the deformable portion 112. When the adjusting member 30 moves away from the connecting portion 111, the end of the adjusting member 30 away from the connecting portion 111 pushes the deformable portion 112 to move away from the connecting portion 111, causing deformation. This increases the distance between the deformable portion 112 and the resonator 20, or the distance between the resonator 20 and the connecting portion 111. Optionally, if the deformable portion 112 can undergo elastic deformation, when the adjusting member 30 moves closer to the connecting portion 111, the deformable portion 112 can be reset under the action of elastic restoring force, which can decrease the distance between the deformable portion 112 and the resonator 20, or the distance between the resonator 20 and the connecting portion 111. Since the adjusting member 30 does not need to apply force to the side of the deformable portion 112 away from the connecting portion 111, it does not need to extend to the outside of the resonant cavity 101, which helps to reduce the occupation of external space and improve space utilization.

[0122] Optionally, in some embodiments, please refer to Figure 7 , Figures 11 to 13 A through hole 102 is provided on the deformable part 112, and the end of the adjusting member 30 away from the connecting part 111 is located at the through hole 102.

[0123] It can be understood that the end of the adjusting member 30 away from the connecting portion 111 being located at the through hole 102 means that the end of the adjusting member 30 away from the connecting portion 111 is approximately located at the through hole 102, so that force can be applied to the adjusting member 30 at the through hole 102, thereby causing the adjusting member 30 to move. The end of the adjusting member 30 away from the connecting portion 111 can be entirely located within the resonant cavity 101 and on one side of the through hole 102, that is, it does not extend into the through hole 102; the end of the adjusting member 30 away from the connecting portion 111 can also partially extend into the through hole 102 but not extend to the outside of the resonant cavity 101; the end of the adjusting member 30 away from the connecting portion 111 can also pass through the through hole 102 and extend to the outside of the resonant cavity 101.

[0124] With this configuration, force can be applied to the adjusting member 30 at the through hole 102, making it easier to drive the adjusting member 30 to move.

[0125] Optionally, please refer to Figures 11 to 13 The adjusting member 30 is provided with a force-applying structure 301 at the end away from the connecting part 111. By applying force to the force-applying structure 301, the adjusting member 30 can be moved, and the adjusting member 30 can drive the deformable part 112 to deform, which can improve the convenience of adjusting the adjusting member 30.

[0126] Optionally, please refer to Figures 11 to 13 The end face of the adjusting member 30 away from the connecting part 111 is located inside the resonant cavity 101 and is used to abut against the side of the deformable part 112 facing the connecting part 111.

[0127] With this configuration, the end of the adjustment member 30 furthest from the connecting part 111 is completely located inside the resonant cavity 101 and does not extend to the outside of the resonant cavity 101. This can further reduce the occupation of external space, improve space utilization, and reduce the interference of external objects on the adjustment member 30.

[0128] For example, please refer to Figure 12 The resonator 20 is connected to the connecting part 111, and the adjusting member 30 is threadedly connected to the threaded hole 201 on the resonator 20. By applying a rotational force to the adjusting member 30 at the through hole 102, when the adjusting member 30 rotates clockwise, the adjusting member 30 can move away from the connecting part 111 along the axial direction of the adjusting member 30. The end of the adjusting member 30 away from the connecting part can push the deformable part 112 to move away from the connecting part 111 and deform, thereby increasing the distance between the deformable part 112 and the resonator 20. Optionally, if the deformable part 112 can undergo elastic deformation, when a rotational force is applied to the adjusting member 30 to rotate counterclockwise, the deformable part 112 can be reset under the action of the elastic restoring force, thereby reducing the distance between the deformable part 112 and the resonator 20.

[0129] It should be noted that the through hole 102 is not limited to being formed on the deformed portion 112. Alternatively, in some other embodiments, please refer to... Figure 14 Alternatively, a through hole 102 may be provided on the connecting portion 111, and the end of the adjusting member 30 away from the connecting portion 111 may abut against the side of the deformable portion 112 facing the connecting portion 111. In this case, the adjusting member 30 can still be moved by applying force to the adjusting member 30 at the through hole 102. Optionally, a force-applying structure 301 may be provided at the end of the adjusting member 30 away from the deformable portion 112 to facilitate adjustment of the adjusting member 30.

[0130] This application also provides a communication device, which includes the filter 100 of any of the above embodiments. It is understood that the communication device can be any device that requires a filter for communication, such as a communication base station, but is not limited thereto.

[0131] Since the communication device provided in this application uses the filter 100 of the above embodiments, it also has the technical effects brought about by the technical solution of the filter 100 of any of the above embodiments, which will not be repeated here.

[0132] 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 filter, characterized in that, include: A shell structure with a resonant cavity inside, the shell structure includes a connecting part and a deformable part arranged opposite to each other, and the deformable part has a through hole; A resonator is located inside the resonant cavity and connected to the connecting part; as well as An adjustment element is located inside the resonant cavity. One end of the adjustment element is connected to the deformable part and located at the through hole, and the other end of the adjustment element is connected to the resonator. The adjusting member can be rotated under force to move relative to the resonator, thereby changing the depth of the portion of the adjusting member extending into the resonator within the resonant cavity, and simultaneously causing the deformable part to deform; the deformation of the deformable part changes the relative position between the deformable part and the resonator; the filter adjusts the resonant frequency by rotating the adjusting member and simultaneously changing the depth of the portion of the adjusting member extending into the resonator within the resonant cavity and the relative position between the deformable part and the resonator. The resonator includes: A resonant tube, connected to the connecting portion, the resonant tube having an opening; and A fixing element is located inside the opening and fixed to the resonant tube; The adjusting member is connected to the fixing member; The adjusting member is made of a metal material for the part that connects with the fixing member, and the fixing member is made of an insulating material.

2. The filter according to claim 1, characterized in that, The resonator has a threaded hole, and the adjusting component is threadedly connected to the threaded hole.

3. The filter according to claim 1, characterized in that, The adjusting member includes a first part and a second part connected to each other, the first part being connected to the deformable part, and the second part being connected to the resonator; The first part is made of a metallic material for electromagnetically sealing the through-hole, and the second part is made of plastic; or Both the material of the first part and the material of the second part include plastic.

4. The filter according to any one of claims 1 to 3, characterized in that, The adjusting element includes: The first abutting portion is located outside the resonant cavity and is used to abut against the side of the deformable portion away from the connecting portion; and A connecting rod is located inside the resonant cavity. One end of the connecting rod passes through the through hole and is connected to the first abutment part, while the other end of the connecting rod is connected to the resonator.

5. The filter according to claim 4, characterized in that, The first abutting part is fixedly connected to the connecting rod, and the end of the connecting rod away from the connecting part is provided with a force-applying structure.

6. The filter according to claim 4, characterized in that, The adjusting member further includes a second abutting part, which is located inside the resonant cavity and connected to the connecting rod, for abutting against the side of the deformable part facing the connecting part.

7. The filter according to claim 6, characterized in that, The connecting rod is clearance-fitted with the through hole; and / or The first abutting part abuts against the deformable part, and the second abutting part is in clearance fit with the deformable part; or, the second abutting part abuts against the deformable part, and the first abutting part is in clearance fit with the deformable part.

8. The filter according to claim 6, characterized in that, The first abutting part is provided with a first threaded through hole, and the end of the connecting rod away from the connecting part passes through the through hole and is threadedly connected to the first threaded through hole; and / or, the second abutting part is provided with a second threaded through hole, and the end of the connecting rod facing the connecting part passes through the through hole and is threadedly connected to the second threaded through hole; The end of the connecting rod away from the connecting part is provided with a force-applying structure.

9. The filter according to any one of claims 1 to 3, characterized in that, The end of the adjusting member away from the connecting portion is used to abut against the side of the deformable portion facing the connecting portion.

10. The filter according to claim 9, characterized in that, The adjusting member has a force-applying structure at the end away from the connecting part; The end face of the adjusting member away from the connecting portion is located inside the resonant cavity and is used to abut against the side of the deformable portion facing the connecting portion.

11. A communication device, characterized in that, The communication device includes a filter as described in any one of claims 1 to 10.

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