Filter

Abstract

The present application relates to the technical field of communications, and provides a filter, comprising a filter housing (10), a resonant rod assembly (20), and a first coupling member (30). The filter housing (10) has a first plate member (11) and a second plate member (12). The resonant rod assembly (20) is mounted on the first plate member (11) or the second plate member (12), and the resonant rod assembly (20) comprises resonant rods (21). The first coupling member (30) is provided between the two resonant rods (21) and is used for coupling the two resonant rods (21), the first coupling member (30) has a first end (31) and a second end (32), the first end (31) is connected to the first plate member (11), and the second end (32) is close to the second plate member (12). The filter uses the first coupling member (30) to realize the coupling between the two resonant rods (21), so that the structure can be simplified, the number of parts can be reduced, and the assembly convenience and the assembly efficiency can be improved.

Description

filter Technical Field

[0001] The present application belongs to the field of communication technology, and in particular relates to a filter. Background Art

[0002] Existing filters typically include a filter housing, a resonant rod, and a coupling assembly, both of which are located within the filter housing. The coupling assembly is located between the two resonant rods and typically includes a coupling structure for coupling the two resonant rods, and a support structure for supporting and securing the coupling structure. The coupling structure is assembled to the support structure, which is in turn assembled to the filter housing. As a result, the coupling assembly has a relatively large number of components, which takes up a significant amount of internal space within the filter and makes assembly more inconvenient.

[0003] Application Contents

[0004] The embodiment of the present application provides a filter, which aims to solve the problem in existing filters that the number of parts of the coupling assembly is relatively large, which occupies more internal space of the filter and is inconvenient to assemble.

[0005] To achieve the above objectives, the technical solution adopted in the embodiment of the present application is: a filter, comprising:

[0006] A filter housing comprises a first plate member and a second plate member which are arranged opposite to each other;

[0007] A resonant rod assembly, provided with at least one, and disposed in the filter housing, the resonant rod assembly being mounted on the first plate or the second plate, the resonant rod assembly comprising at least one resonant rod;

[0008] There is at least one first coupling member, which is arranged between the two resonant rods and is used to couple the two resonant rods. The first coupling member has a first end and a second end opposite to each other, the first end is connected to the first plate, and the second end is close to the second plate.

[0009] In some embodiments, the second end abuts against the second plate.

[0010] In some embodiments, the second end is spaced apart from the second plate.

[0011] In some embodiments, the resonant rod assembly includes a first coupling rib, wherein the first coupling rib is connected between two adjacent resonant rods of the same resonant rod assembly;

[0012] And / or, at least one of the resonant rods is provided with a second coupling member, and the second coupling member is extended toward the adjacent resonant rod of the same resonant rod assembly;

[0013] And / or, at least one first coupling member is disposed between two adjacent resonant rods of the same resonant rod assembly.

[0014] In some embodiments, the filter further comprises a second coupling rib connected between two adjacent resonant rods located at ends of the resonant rod assembly;

[0015] And / or, the filter housing is provided with a first coupling window, the first coupling window being provided between two resonant rods at ends of adjacent resonant rod assemblies, for coupling the two resonant rods;

[0016] And / or, at least one first coupling member is disposed between two adjacent resonant rods located at the ends of the resonant rod assembly.

[0017] In some embodiments, the filter further comprises a third coupling rib, wherein the third coupling rib is connected between two resonant rods of the adjacent resonant rod assemblies, and is used to cross-couple the two resonant rods;

[0018] And / or, the filter housing is provided with a second coupling window, the second coupling window being provided between two resonant rods of adjacent resonant rod assemblies, for cross-coupling the two resonant rods;

[0019] And / or, at least one first coupling member is disposed between two resonant rods of adjacent resonant rod assemblies, for cross-coupling the two resonant rods.

[0020] In some embodiments, the first coupling member includes a first coupling portion, a connecting portion, and a second coupling portion, wherein the connecting portion extends from one of the resonant rods toward the other resonant rod; the first coupling portion is bent and connected to one end of the connecting portion, and extends toward the first plate, and the end of the first coupling portion away from the connecting portion is the first end; the second coupling portion is bent and connected to the other end of the connecting portion, and extends toward the second plate, and the end of the second coupling portion away from the connecting portion is the second end.

[0021] In some embodiments, the first coupling portion is disposed perpendicular to the connecting portion, and the connecting portion is disposed perpendicular to the second coupling portion.

[0022] In some embodiments, the first coupling portion is perpendicular to the first plate.

[0023] In some embodiments, the first coupling member is integrally formed from a plate-shaped substrate.

[0024] In some embodiments, the first coupling member is integrally connected to the first plate member.

[0025] In some embodiments, the filter housing includes a housing body connected between the first plate and the second plate, and the first plate, the housing body, and the second plate together enclose a closed inner cavity;

[0026] In which, the shell body is separately connected to the second plate, and the shell body is integrally connected to the first plate; or, the shell body is integrally connected to the second plate, and the shell body is separately connected to the first plate; or, the shell body is separately connected to the second plate, and the shell body is separately connected to the first plate.

[0027] In some embodiments, the resonant rod assembly is integrally formed from a sheet metal substrate.

[0028] The filter provided by this application has the following beneficial effects:

[0029] The filter provided in an embodiment of the present application may include a first coupling member disposed between at least one set of two resonant rods to achieve coupling between the two resonant rods via the first coupling member. Compared to coupling assemblies in existing filters, the first coupling member of this embodiment can achieve coupling between the two resonant rods using an independent, separate component, a simplified structure, and a reduced number of parts. This simplifies the filter structure, reduces the number of parts within the filter, and facilitates miniaturization and lightweighting of the filter.

[0030] Furthermore, the first coupling member can be connected to the first plate member via the first end to achieve grounding, and can conveniently, quickly and reliably achieve its own connection, fixation and assembly, thereby effectively improving the assembly convenience and efficiency of the first coupling member and the filter.

[0031] In addition, the first coupling member can also be close to the second plate member through the second end, so as to enable the two resonant rods to achieve the required coupling polarity by means of "adjusting the abutment between the second end and the second plate member", "adjusting the spacing between the second end and the second plate member, and adjusting the distance", etc., thereby effectively improving the performance and effectiveness of the first coupling member, reducing the design difficulty of the coupling relationship between the two resonant rods, and improving the design flexibility of the coupling relationship between the two resonant rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0033] FIG1 is a perspective schematic diagram of a filter provided in some embodiments of the present application;

[0034] FIG2 is a front view of the filter provided in FIG1 ;

[0035] FIG3 is a cross-sectional view taken along AA provided in FIG2 ;

[0036] FIG4 is a cross-sectional view along line BB provided in FIG2 ;

[0037] FIG5 is an exploded schematic diagram of the filter provided in FIG1 ;

[0038] FIG6 is a partial structural perspective view of the filter housing provided in FIG5 ;

[0039] FIG7 is an exploded schematic diagram of the resonant rod assembly, the second coupling rib, and the third coupling rib provided in FIG5 ;

[0040] FIG8 is a cross-sectional view of a filter provided in some other embodiments of the present application, wherein the second end is spaced apart from the second plate;

[0041] Figure 9 is a cross-sectional view of a filter provided in some other embodiments of the present application, wherein at least one first coupling member is arranged between two adjacent resonant rods of the same resonant rod assembly, and at least one first coupling member is arranged between two resonant rods of adjacent resonant rod assemblies to cross-couple the two resonant rods.

[0042] Among them, the reference numerals in the figure are: 10-filter housing, 11-first plate, 12-second plate, 13-shell body, 131-side wall, 14-inner cavity; 15-isolation wall, 151-first coupling window, 152-second coupling window, 153-third coupling window, 154-fourth coupling window, 155-fifth coupling window; 20-resonance rod assembly, 20a-first resonance rod assembly, 20b-second resonance rod assembly, 20c-third resonance rod assembly; 21-resonance rod, 21a-first resonance rod, 21b -second resonant rod, 21c-third resonant rod, 21d-fourth resonant rod, 21e-fifth resonant rod, 21f-sixth resonant rod, 21g-seventh resonant rod, 21h-eighth resonant rod, 21i-ninth resonant rod, 21j-tenth resonant rod; 211-second coupling member; 22-first coupling rib; 30-first coupling member, 31-first end, 32-second end, 33-first coupling part, 34-connecting part, 35-second coupling part; 40-second coupling rib; 50-third coupling rib. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clear and understandable, the present application is described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0044] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0045] 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 being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0046] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0047] Existing filters typically include a filter housing, a resonant rod, and a coupling assembly, both located within the housing. The coupling assembly is positioned between the two resonant rods and typically includes a coupling structure for coupling the two resonant rods, and a support structure for securing the coupling structure. The coupling structure is assembled to the support structure, which is in turn assembled to the filter housing. As a result, the coupling assembly has a relatively large number of components, which takes up considerable space within the filter and makes assembly more inconvenient.

[0048] Therefore, an embodiment of the present application provides a filter in which a first coupling member is designed to replace a coupling assembly to solve the problem in existing filters that the coupling assembly has a relatively large number of components, which occupies more internal space of the filter and is inconvenient to assemble.

[0049] The following describes the specific implementation of this application in detail with reference to specific embodiments:

[0050] Referring to Figures 1, 2, 3, and 4, some embodiments of the present application provide a filter including a filter housing 10, a resonant rod assembly 20, and a first coupling member 30. The filter housing 10 has a first plate 11 and a second plate 12 disposed opposite each other. At least one resonant rod assembly 20 is provided and disposed within the filter housing 10. The resonant rod assembly 20 is mounted on the first plate 11 or the second plate 12. The resonant rod assembly 20 includes at least one resonant rod 21. At least one first coupling member 30 is provided and disposed between the two resonant rods 21 for coupling the two resonant rods 21. The first coupling member 30 has a first end 31 and a second end 32 opposite each other. The first end 31 is connected to the first plate 11, and the second end 32 is close to the second plate 12.

[0051] It should be noted that the filter housing 10 has a closed inner cavity 14 within it, which provides shielding and prevents signal leakage. This inner cavity 14 can be divided into at least one resonant cavity, which can accommodate a resonant rod 21. This embodiment does not limit the shape, size, or material of the filter housing 10.

[0052] The plate on one side of the filter housing 10 is a first plate 11, and the plate on the side of the filter housing 10 opposite the first plate 11 is a second plate 12. In actual application scenarios, the filter can be placed with the second plate 12 facing upward, or with the second plate 12 facing left, right, front, or back, and this embodiment does not impose any restrictions on this.

[0053] It should also be noted that there is at least one resonant rod assembly 20, and each resonant rod assembly 20 includes a resonant rod 21 or a plurality of resonant rods 21 arranged in a row. The resonant rod assembly 20 is arranged in the filter housing 10, and the required coupling relationship is established between each resonant rod 21. In the case where there are multiple resonant rod assemblies 20, the multiple resonant rod assemblies 20 can be located in the same column or in different columns; when the multiple resonant rod assemblies 20 are arranged in columns in the filter housing 10, that is, at least two resonant rod assemblies 20 are in two different columns, the number of resonant rod assemblies 20 in the same column can be one or more, and this embodiment does not impose any restrictions on this.

[0054] One side of the resonant rod assembly 20 is connected to (i.e., mounted on) the first plate 11, and the other side of the resonant rod assembly 20 is spaced apart from the second plate 12, forming a capacitor therebetween. Alternatively, one side of the resonant rod assembly 20 is connected to (i.e., mounted on) the second plate 12, and the other side of the resonant rod assembly 20 is spaced apart from the first plate 11, forming a capacitor therebetween. The resonant rod assembly 20 can be connected to the first plate 11 or the second plate 12 via one end of the resonant rod 21, or can be connected to the first plate 11 or the second plate 12 via other components of the resonant rod assembly 20 (e.g., the first coupling rib 22), or can be connected to the first plate 11 or the second plate 12 via a base, mounting seat, or other structure on the filter housing 10. Optionally, the resonant rod assembly 20 can be connected to the first plate 11 or the second plate 12 by, but not limited to, welding, riveting, pressing, screw fastening, threading, or clamping, and this embodiment does not impose any restrictions on this.

[0055] Among them, the resonant rod 21 can be a metal resonant rod, a ceramic dielectric resonant rod or a dielectric resonant rod of other materials. The resonant rod 21 can be a columnar resonant rod, a tubular resonant rod, an irregular resonant rod, a sheet metal resonant rod or other forms. The resonant rod 21 can be with a resonant disk or without a resonant disk. The resonant disk can be with a flange or without a flange. This embodiment does not impose any restrictions on this.

[0056] It should also be noted that at least one first coupling member 30 is provided. Each first coupling member 30 is an independent, separate component. This embodiment does not impose any restrictions on the shape, size, material, etc. of the first coupling member 30. The first coupling member 30 is provided between any two resonant rods 21 to couple the two resonant rods 21. Therefore, compared to coupling components in existing filters, the first coupling member 30 of this embodiment can simplify the structure and reduce the number of components while ensuring the coupling relationship between the two resonant rods 21.

[0057] The two resonant rods 21 coupled via the first coupling member 30 may belong to the same resonant rod assembly 20 or to different resonant rod assemblies 20. Furthermore, the two resonant rods 21 may be adjacent or non-adjacent along the primary signal transmission path. If the two resonant rods 21 are adjacent along the primary signal transmission path, i.e., they are two adjacent resonant rods 21 of the same resonant rod assembly 20, or two resonant rods 21 located at the ends of adjacent resonant rod assemblies 20, then the coupling between the two resonant rods 21 via the first coupling member 30 is a coupling relationship along the primary signal transmission path, i.e., the coupling relationship between the two resonant rods 21 is cascaded. If the two resonant rods 21 are non-adjacent along the primary signal transmission path, i.e., they are two non-adjacent resonant rods 21 of different resonant rod assemblies 20, then the coupling between the two resonant rods 21 via the first coupling member 30 is cross-coupling, i.e., the coupling relationship between the two resonant rods 21 is non-cascaded.

[0058] The first coupling member 30 has a first end 31 and a second end 32 that oppose each other. The first end 31 is connected to the first plate 11. This arrangement allows the first coupling member 30 to be grounded and also facilitates connection, fixation, and assembly. As a result, compared to existing filter coupling assemblies, the first coupling member 30 of this embodiment offers greater assembly convenience and efficiency. The first end 31 can be connected to the first plate 11 using, but is not limited to, integral connection, welding, riveting, crimping, plugging, screw fastening, threaded connection, or snap-on connection, although this embodiment does not impose any restrictions on this.

[0059] The second end 32 is close to the second plate 12. Based on this, the first coupling member 30 can be used to force the two resonant rods 21 to achieve the desired coupling polarity (i.e., inductive coupling or capacitive coupling) by adjusting the second end 32's contact with the second plate 12, adjusting the spacing between the second end 32 and the second plate 12, and adjusting the distance. Therefore, compared to the coupling components of existing filters, the first coupling member 30 of this embodiment has better performance and utility, reduces the difficulty of designing the coupling relationship between the two resonant rods 21, and increases the design flexibility of the coupling relationship between the two resonant rods 21.

[0060] For example, as shown in Figures 4, 5, 6, and 7, in one embodiment of a filter, ten resonant rods 21 are provided within the filter housing 10. The ten resonant rods 21 are respectively a first resonant rod 21a, a second resonant rod 21b, a third resonant rod 21c, a fourth resonant rod 21d, a fifth resonant rod 21e, a sixth resonant rod 21f, a seventh resonant rod 21g, an eighth resonant rod 21h, a ninth resonant rod 21i, and a tenth resonant rod 21j. The first resonant rod 21a, the second resonant rod 21b, and the third resonant rod 21c are arranged in a row and coupled in sequence to form a first resonant rod assembly 20a. The fourth resonant rod 21d, the fifth resonant rod 21e, the sixth resonant rod 21f, the seventh resonant rod 21g, and the eighth resonant rod 21h are arranged in a row and coupled in sequence to form a second resonant rod assembly 20b. The ninth resonant rod 21i and the tenth resonant rod 21j are arranged in a row and coupled in sequence to form a third resonant rod assembly 20c. The primary signal transmission path is along the first resonant rod 21a, the second resonant rod 21b, the third resonant rod 21c, the fourth resonant rod 21d, the fifth resonant rod 21e, the sixth resonant rod 21f, the seventh resonant rod 21g, the eighth resonant rod 21h, the ninth resonant rod 21i, and the tenth resonant rod 21j. A first coupling member 30 is provided between the third resonant rod 21c and the fourth resonant rod 21d, coupling the third resonant rod 21c and the fourth resonant rod 21d via the first coupling member 30.

[0061] In summary, the filter provided in the embodiment of the present application can be provided with a first coupling member 30 between at least one set of two resonant rods 21 to achieve coupling between the two resonant rods 21 via the first coupling member 30. Compared to the coupling components of existing filters, the first coupling member 30 of this embodiment can achieve coupling between the two resonant rods 21 with an independent, separate individual component, a simplified structure, and a reduced number of parts, thereby simplifying the structure of the filter, reducing the number of parts within the filter, and facilitating miniaturization and lightweighting of the filter.

[0062] In addition, the first coupling member 30 can be connected to the first plate 11 through the first end 31 to achieve grounding, and can conveniently, quickly and reliably achieve its own connection, fixation and assembly, thereby effectively improving the assembly convenience and efficiency of the first coupling member 30 and the filter.

[0063] In addition, the first coupling member 30 can also be close to the second plate member 12 through the second end 32, so as to enable the two resonant rods 21 to achieve the required coupling polarity by means of "adjusting the abutment between the second end 32 and the second plate member 12", "adjusting the spacing between the second end 32 and the second plate member 12, and adjusting the distance", etc., thereby effectively improving the performance and effectiveness of the first coupling member 30, reducing the design difficulty of the coupling relationship between the two resonant rods 21, and improving the design flexibility of the coupling relationship between the two resonant rods 21.

[0064] Optionally, referring to FIG. 3 , in some embodiments of the present application, the second end 32 abuts against the second plate 12 .

[0065] By adopting the above-mentioned solution, on the basis of connecting the first end 31 of the first coupling member 30 to the first plate member 11, the second end 32 of the first coupling member 30 can be tightly abutted against the second plate member 12, so that the first end 31 and the second end 32 of the first coupling member 30 are both grounded. Based on this, capacitive coupling can be formed between the corresponding two resonant rods 21 through the first coupling member 30, so that the desired capacitive coupling polarity can be achieved between the two resonant rods 21 conveniently and quickly, thereby reducing the difficulty of designing the coupling relationship between the two resonant rods 21.

[0066] Optionally, referring to FIG. 8 , in some embodiments of the present application, the second end 32 is spaced apart from the second plate 12 .

[0067] It should be noted that, based on the first end 31 of the first coupling member 30 being connected to the first plate 11, the second end 32 of the first coupling member 30 is spaced apart from the second plate 12. Therefore, the first end 31 of the first coupling member 30 is grounded, while the second end 32 of the first coupling member 30 is not. On this basis, if the distance between the second end 32 and the second plate 12 does not reach a certain value (depending on the actual scenario), the first coupling member 30 can cause the coupling polarity between the two resonant rods 21 to exhibit capacitive coupling. If the distance between the second end 32 and the second plate 12 reaches a certain value, the first coupling member 30 can flip the coupling polarity between the two resonant rods 21 from capacitive coupling to inductive coupling.

[0068] By adopting the above solution, while the first end 31 of the first coupling member 30 is connected to the first plate 11, the second end 32 of the first coupling member 30 is spaced from the second plate 12, so that the first end 31 of the first coupling member 30 is grounded while the second end 32 of the first coupling member 30 is not. Based on this, the spacing between the second end 32 and the second plate 12 can be adjusted to ensure that the two resonant rods 21 coupled via the first coupling member 30 achieve the desired coupling polarity. Specifically, by ensuring that the spacing between the second end 32 and the second plate 12 does not reach a certain value, the first coupling member 30 can promote capacitive coupling between the two resonant rods 21; conversely, by ensuring that the spacing between the second end 32 and the second plate 12 reaches a certain value, the first coupling member 30 can promote inductive coupling between the two resonant rods 21. This reduces the design difficulty of the coupling relationship between the two resonant rods 21 and increases the design flexibility of the coupling relationship between the two resonant rods 21.

[0069] Please refer to Figures 4, 5 and 7. In some embodiments of the present application, the resonant rod assembly 20 includes a first coupling rib 22, and the first coupling rib 22 is connected between two adjacent resonant rods 21 of the same resonant rod assembly 20.

[0070] It should be noted that the resonant rod assembly 20 may include a plurality of resonant rods 21. For the multiple resonant rods 21 of the same resonant rod assembly 20, adjacent resonant rods 21 can be connected and coupled as needed through the first coupling rib 22, so as to facilitate the transmission of signals from one resonant rod 21 to another resonant rod 21. The first coupling rib 22 can be connected to one end of the resonant rod 21, or to any position between the two ends of the resonant rod 21. The first coupling rib 22 and the corresponding resonant rod 21 can be connected as a whole or separately, and this embodiment does not impose any restrictions on this. The extension path of the first coupling rib 22 can be in the form of a straight line, a bend, etc., and this embodiment does not impose any restrictions on this.

[0071] For example, as shown in Figures 4, 5, and 7, in one example of the filter, in the first resonant rod assembly 20a, the first resonant rod 21a and the second resonant rod 21b, and the second resonant rod 21b and the third resonant rod 21c are connected and coupled via first coupling ribs 22, respectively, so that energy can be transmitted sequentially along the first resonant rod 21a, the second resonant rod 21b, and the third resonant rod 21c. In the second resonant rod assembly 20b, the fourth resonant rod 21d and the fifth resonant rod 21e, the fifth resonant rod 21e and the sixth resonant rod 21f, the sixth resonant rod 21f and the seventh resonant rod 21g, and the seventh resonant rod 21g and the eighth resonant rod 21h are connected and coupled via first coupling ribs 22, so that energy can be transmitted sequentially along the fourth resonant rod 21d, the fifth resonant rod 21e, the sixth resonant rod 21f, the seventh resonant rod 21g, and the eighth resonant rod 21h. In the third resonant rod assembly 20c, the ninth resonant rod 21i and the tenth resonant rod 21j are connected and coupled via the first coupling rib 22, allowing energy to be transmitted sequentially along the ninth resonant rod 21i and the tenth resonant rod 21j. This facilitates energy transmission within each resonant rod assembly 20 and helps form a primary signal transmission path.

[0072] By adopting the above solution, adjacent resonant rods 21 of the same resonant rod assembly 20 can be connected via the first coupling ribs 22 as needed, so that the two resonant rods 21 can be coupled or even have enhanced coupling via the first coupling ribs 22. This can ensure and improve the performance of the filter.

[0073] Please refer to FIG. 4 , FIG. 5 , and FIG. 7 . In some embodiments of the present application, at least one resonant rod 21 is provided with a second coupling member 211 . The second coupling member 211 is extended toward an adjacent resonant rod 21 of the same resonant rod assembly 20 .

[0074] It should be noted that at least one resonant rod 21 is provided with a second coupling member 211. Some resonant rods 21 may not be provided with the second coupling member 211, while some resonant rods 21 may be provided with one or more second coupling members 211, as required. Of course, some resonant rod assemblies 20 may not have all resonant rods 21 provided with the second coupling member 211.

[0075] The second coupling member 211 provided on the resonant rod 21 can be extended toward the resonant rod 21 that belongs to the same resonant rod assembly 20 and is adjacent to the resonant rod 21, which facilitates the coupling of the resonant rod 21 with the resonant rod 21 that belongs to the same resonant rod assembly 20 and is adjacent to the resonant rod 21 through the second coupling member 211, and even enhances the coupling.

[0076] The second coupling member 211 may be connected to the corresponding resonant rod 21 in one piece or in a separate piece, and this embodiment does not impose any limitation on this.

[0077] For example, as shown in Figures 4, 5 and 7, in an example of the filter, in the first resonant rod assembly 20a, the first resonant rod 21a is provided with a second coupling member 211 extending toward the second resonant rod 21b, and the second resonant rod 21b is provided with a second coupling member 211 extending toward the first resonant rod 21a, which is conducive to the coupling between the first resonant rod 21a and the second resonant rod 21b and even enhanced coupling; the second resonant rod 21b is provided with a second coupling member 211 extending toward the third resonant rod 21c, which is conducive to the coupling between the second resonant rod 21b and the third resonant rod 21c and even enhanced coupling. In the second resonant rod assembly 20b, the fifth resonant rod 21e is provided with a second coupling member 211 extending toward the fourth resonant rod 21d, which is conducive to the coupling between the fourth resonant rod 21d and the fifth resonant rod 21e and even enhanced coupling; the fifth resonant rod 21e is provided with a second coupling member 211 extending toward the sixth resonant rod 21f, and the sixth resonant rod 21f is provided with a second coupling member 211 extending toward the fifth resonant rod 21e, which is conducive to the coupling between the fifth resonant rod 21e and the sixth resonant rod 21f and even enhanced coupling; the sixth resonant rod 21f is provided with a The seventh resonant rod 21g is provided with a second coupling member 211 extending toward the sixth resonant rod 21f, facilitating coupling and even enhancing coupling between the sixth and seventh resonant rods 21f. The seventh resonant rod 21g is provided with a second coupling member 211 extending toward the eighth resonant rod 21h, and the eighth resonant rod 21h is provided with a second coupling member 211 extending toward the seventh resonant rod 21g, facilitating coupling and even enhancing coupling between the seventh and eighth resonant rods 21g and 21h. In the third resonant rod assembly 20c, the ninth resonant rod 21i is provided with a second coupling member 211 extending toward the tenth resonant rod 21j, facilitating coupling and even enhancing coupling between the ninth and tenth resonant rods 21i and 21j.

[0078] By adopting the above solution, at least one resonant rod 21 can be provided with a second coupling member 211 extending toward an adjacent resonant rod 21 of the same resonant rod assembly 20, so that the resonant rod 21 can be coupled with or even have its coupling enhanced with the adjacent resonant rod 21 via the second coupling member 211. Based on this, two adjacent resonant rods 21 of the same resonant rod assembly 20 can be coupled or even have their coupling enhanced as needed via the second coupling member 211, thereby ensuring and improving the performance of the filter.

[0079] Please refer to FIG. 9 . In some embodiments of the present application, at least one first coupling member 30 is disposed between two adjacent resonant rods 21 of the same resonant rod assembly 20 .

[0080] It should be noted that at least one first coupling member 30 is disposed between two adjacent resonant rods 21 belonging to the same resonant rod assembly 20. For example, as shown in FIG9 , a first coupling member 30 may be disposed between the fourth resonant rod 21 d and the fifth resonant rod 21 e , and coupling may be formed or even enhanced by the first coupling member 30 .

[0081] By adopting the above solution, by disposing at least one first coupling member 30 between two adjacent resonant rods 21 of the same resonant rod assembly 20, it is possible to facilitate coupling between the two resonant rods 21 through the first coupling member 30, or even enhance coupling. Based on this, coupling between two adjacent resonant rods 21 of the same resonant rod assembly 20 can be achieved or even enhanced as needed through the first coupling member 30, thereby ensuring and improving the performance of the filter.

[0082] It should be noted that between any two adjacent resonant rods 21 belonging to the same resonant rod assembly 20, one of the first coupling ribs 22, the second coupling member 211, and the first coupling member 30 may be selectively provided, thereby establishing a coupling relationship between the two resonant rods. Alternatively, multiple types of the first coupling ribs 22, the second coupling member 211, and the first coupling member 30 may be selectively provided, thereby establishing a coupling relationship between the two resonant rods and enhancing coupling. For example, as shown in FIG7 , the first resonant rod 21a and the second resonant rod 21b may be connected and coupled via the first coupling ribs 22, and the coupling may be enhanced by the second coupling member 211 provided on both resonant rods.

[0083] Please refer to Figures 4, 5 and 7. In some embodiments of the present application, the filter further includes a second coupling rib 40, which is connected between two resonant rods 21 located at the ends of adjacent resonant rod assemblies 20.

[0084] It should be noted that, for two adjacent resonant rod assemblies 20 arranged in the same column or different columns, the two resonant rods 21 located at the ends of the two adjacent resonant rod assemblies 20 can be connected and coupled through the second coupling rib 40 as needed to facilitate the transmission of signals from one resonant rod assembly 20 to the other resonant rod assembly 20.

[0085] Among them, the second coupling rib 40 can be integrally connected to one of the resonant rods 21 connected to it and separately connected to the other resonant rod 21 connected to it; or, the second coupling rib 40 can be integrally connected to the two resonant rods 21 connected to it; or, the second coupling rib 40 can be separately connected to the two resonant rods 21 connected to it; this embodiment does not impose any restrictions on this.

[0086] The extension direction of the second coupling rib 40 can be straight, curved, etc. This embodiment does not impose a single restriction on the extension path of the second coupling rib 40.

[0087] It should also be noted that the filter housing 10 is provided with a partition wall 15 between adjacent resonant rod assemblies 20 arranged in the same or different rows. This partition wall 15 isolates the resonant rods 21 between adjacent resonant rod assemblies 20 that do not need to be coupled, shielding irrelevant signals and preventing signal interference, thereby forming a complete and orderly signal transmission channel within the filter. A third coupling window 153 may be provided in the partition wall 15 as needed, for the second coupling rib 40 to pass through.

[0088] For example, as shown in Figures 4, 5, and 7, in one example of a filter, the second resonant rod assembly 20b and the third resonant rod assembly 20c are arranged in columns, but in different columns. A partition wall 15 is provided between the second resonant rod assembly 20b and the third resonant rod assembly 20c. A third coupling window 153 is provided in the region of the partition wall 15 corresponding to the region between the eighth resonant rod 21h and the ninth resonant rod 21i. The eighth resonant rod 21h and the ninth resonant rod 21i can be connected and coupled via a second coupling rib 40 extending through the third coupling window 153. Based on this, energy can be transferred between the eighth resonant rod 21h and the ninth resonant rod 21i.

[0089] By adopting the above solution, adjacent resonant rod assemblies 20 are located between the two resonant rods 21 at the ends and can be connected and coupled as needed via the second coupling ribs 40, so that energy can be transmitted from the resonant rod 21 at one end of one resonant rod assembly 20 to the resonant rod 21 at one end of the other resonant rod assembly 20, allowing energy to be transmitted between adjacent resonant rod assemblies 20. Based on this, energy can be transmitted along the preset signal transmission path, thereby ensuring the performance of the filter.

[0090] Please refer to Figures 4, 5 and 7. In some embodiments of the present application, the filter housing 10 is provided with a first coupling window 151. The first coupling window 151 is provided between two resonant rods 21 at the ends of adjacent resonant rod assemblies 20 for coupling the two resonant rods 21.

[0091] It should be noted that a first coupling window 151 can be provided on the partition wall 15 as needed. The first coupling window 151 is provided between two resonant rods 21 at the ends of adjacent resonant rod assemblies 20. Two resonant rods 21 facing each other along the first coupling window 151 can establish a coupling relationship via the first coupling window 151. Furthermore, when the first coupling window 151 is provided over a large area, multiple groups of resonant rods 21 can share the first coupling window 151 to establish a coupling relationship between themselves. That is, among the multiple groups of resonant rods 21 sharing the first coupling window 151, the corresponding two resonant rods 21 in each group of resonant rods 21 are coupled via the first coupling window 151.

[0092] The two resonant rods 21 coupled through the first coupling window 151 belong to different resonant rod assemblies 20, but are adjacent to each other along the primary signal transmission path. That is, the two resonant rods 21 located at the ends of the adjacent resonant rod assemblies 20 are coupled through the first coupling window 151 along the primary signal transmission path. In other words, the coupling between the two resonant rods 21 is cascaded.

[0093] For example, as shown in Figures 4, 5, and 7, in one example of the filter, a partition wall 15 is provided between the first resonant rod assembly 20a, the second resonant rod assembly 20b, and the third resonant rod assembly 20c. A first coupling window 151 is provided in the region of the partition wall 15 corresponding to the third resonant rod 21c and the fourth resonant rod 21d. The third resonant rod 21c and the fourth resonant rod 21d are relative to and coupled to each other through the first coupling window 151. The coupling between the third resonant rod 21c and the fourth resonant rod 21d through the first coupling window 151 is a coupling relationship on the main signal transmission path, that is, the coupling relationship between the third resonant rod 21c and the fourth resonant rod 21d is cascaded. A first coupling window 151 is provided in the area between the corresponding eighth resonant rod 21h and the ninth resonant rod 21i of the isolation wall 15. The eighth resonant rod 21h and the ninth resonant rod 21i are relative to and coupled through the first coupling window 151, and the coupling achieved by the eighth resonant rod 21h and the ninth resonant rod 21i through the first coupling window 151 is a coupling relationship on the main signal transmission path, that is, the coupling relationship between the eighth resonant rod 21h and the ninth resonant rod 21i is cascaded.

[0094] By adopting the above solution, adjacent resonant rod assemblies 20 are located between the two resonant rods 21 at the ends and can be relative and coupled as needed through the first coupling window 151 opened in the partition wall 15, so that energy can be transmitted from the resonant rod 21 of one resonant rod assembly 20 to the resonant rod 21 of the other resonant rod assembly 20, so that energy can be transmitted between adjacent resonant rod assemblies 20. Based on this, energy can be transmitted along the preset signal transmission path, thereby ensuring the performance of the filter. In addition, due to the simple structure of the first coupling window 151, establishing a coupling relationship through the first coupling window 151 is more conducive to simplifying the structure of the filter, and is more conducive to miniaturization, simplicity, and lightweighting of the filter.

[0095] Please refer to FIG. 4 , FIG. 5 , and FIG. 6 . In some embodiments of the present application, at least one first coupling member 30 is disposed between two resonant rods 21 located at the ends of adjacent resonant rod assemblies 20 .

[0096] It should be noted that, for two adjacent resonant rod assemblies 20 arranged in the same column or different columns, a first coupling member 30 can be set as needed between the two resonant rods 21 located at the ends of the two adjacent resonant rod assemblies 20 to form coupling through the first coupling member 30, thereby facilitating the transmission of signals from one resonant rod assembly 20 to the other resonant rod assembly 20.

[0097] It should also be noted that a fourth coupling window 154 may be opened on the isolation wall 15 as needed, and the fourth coupling window 154 is used for the first coupling member 30 to be installed therein.

[0098] For example, as shown in Figures 4, 5, and 6, in one example of a filter, the first resonant rod assembly 20a and the second resonant rod assembly 20b are arranged in columns, but in different columns. A partition wall 15 is provided between the first resonant rod assembly 20a and the second resonant rod assembly 20b. A fourth coupling window 154 is defined in the region of the partition wall 15 corresponding to the third resonant rod 21c and the fourth resonant rod 21d. The third resonant rod 21c and the fourth resonant rod 21d are coupled via a first coupling member 30 mounted in the fourth coupling window 154. Consequently, energy can be transferred between the third resonant rod 21c and the fourth resonant rod 21d.

[0099] By adopting the above solution, adjacent resonant rod assemblies 20 are located between the two resonant rods 21 at the ends and can be connected and coupled as needed via the first coupling member 30, so that energy can be transmitted from the resonant rod 21 at one end of one resonant rod assembly 20 to the resonant rod 21 at one end of the other resonant rod assembly 20, allowing energy to be transmitted between adjacent resonant rod assemblies 20. Based on this, energy can be transmitted along the preset signal transmission path, thereby ensuring the performance of the filter.

[0100] It should be noted that any group of adjacent resonant rod assemblies 20 located between two resonant rods 21 at the ends may selectively include one of the second coupling ribs 40, the first coupling window 151, and the first coupling member 30 to establish a coupling relationship between the two resonant rods 21. Alternatively, multiple types of the second coupling ribs 40, the first coupling window 151, and the first coupling member 30 may be selectively provided to establish a coupling relationship between the two resonant rods 21, thereby enhancing coupling. For example, as shown in FIG4 , the third resonant rod 21 c and the fourth resonant rod 21 d may be coupled together via the first coupling window 151 and the first coupling member 30, thereby enhancing coupling. Furthermore, the eighth resonant rod 21 h and the ninth resonant rod 21 i may be coupled together via the second coupling ribs 40 and the first coupling window 151, thereby enhancing coupling.

[0101] It should also be noted that when adjacent resonant rod assemblies 20 are provided with both a first coupling window 151 and a first coupling member 30 between the two resonant rods 21 at the ends, the first coupling window 151 and the fourth coupling window 154 can be a shared coupling window or two independently provided coupling windows. Similarly, when adjacent resonant rod assemblies 20 are provided with both a first coupling window 151 and a second coupling rib 40 between the two resonant rods 21 at the ends, the first coupling window 151 and the third coupling window 153 can be a shared coupling window or two independently provided coupling windows.

[0102] Please refer to Figures 4, 5 and 7. In some embodiments of the present application, the filter further includes a third coupling rib 50, which is connected between two resonant rods 21 of adjacent resonant rod assemblies 20 to cross-couple the two resonant rods 21.

[0103] It should be noted that the third coupling rib 50 is connected between two resonant rods 21 of adjacent resonant rod assemblies 20, so that the two resonant rods 21 form a cross coupling. Here, "connection" can mean that the third coupling rib 50 is directly connected to the resonant rod 21, or the third coupling rib 50 is indirectly connected to the resonant rod 21 through a structure such as the first coupling rib 22.

[0104] The two resonant rods 21 forming the cross-coupling are not adjacent to each other on the main signal transmission path, that is, the two cross-coupled resonant rods 21 of adjacent resonant rod assemblies 20 are not adjacent to each other on the main signal transmission path, that is, the coupling relationship between the two resonant rods 21 is non-cascade. For example, if the third coupling rib 50 is connected to the two resonant rods 21 at the ends of the adjacent resonant rod assemblies 20, the third coupling rib 50 cannot cross-couple the two resonant rods 21 connected thereto. Of course, the two resonant rods 21 forming the cross-coupling can be arranged directly opposite each other or not, and this embodiment does not impose any restrictions on this.

[0105] The third coupling rib 50 may be integrally connected to one of the resonant rods 21 connected thereto and separately connected to the other resonant rod 21 connected thereto; or, the third coupling rib 50 may be integrally connected to both resonant rods 21 connected thereto; or, the third coupling rib 50 may be separately connected to both resonant rods 21 connected thereto. This embodiment does not impose any limitation on this.

[0106] The extension direction of the third coupling rib 50 may be in a straight line or a curved shape, etc., which is not limited in this embodiment.

[0107] It should also be noted that a fifth coupling window 155 is provided at a position of the isolation wall 15 corresponding to the third coupling rib 50 , and the fifth coupling window 155 is used for the third coupling rib 50 to pass through.

[0108] For example, as shown in Figures 4, 5, and 7, in one example of the filter, the isolation wall 15 defines a fifth coupling window 155, which is located between the eighth resonant rod 21h and the tenth resonant rod 21j. A third coupling rib 50 is provided between the eighth resonant rod 21h and the tenth resonant rod 21j. The third coupling rib 50 passes through the fifth coupling window 155 and connects the eighth resonant rod 21h and the tenth resonant rod 21j, thereby forming a cross-coupling between the eighth resonant rod 21h and the tenth resonant rod 21j. Based on this, the eighth resonant rod 21h can transfer energy to the tenth resonant rod 21j via the ninth resonant rod 21i, or directly to the tenth resonant rod 21j via the third coupling rib 50. These two paths between the eighth resonant rod 21h and the tenth resonant rod 21j have a phase difference of 180 degrees in the passband, forming a transmission zero.

[0109] By adopting the above solution, the two resonant rods 21 of the adjacent resonant rod assemblies 20 can be connected and cross-coupled as needed through the third coupling rib 50. This allows the two resonant rods 21 connected by the third coupling rib 50 to have a main signal transmission path that transmits energy in sequence through other resonant rods 21, as well as a direct signal transmission path that directly transmits energy through the third coupling rib 50. The two transmission paths will have a phase difference of 180 degrees in the filter passband, thereby forming a transmission zero point in the filter passband, enabling the filter to form a multi-zero point solution, thereby enhancing the out-of-band suppression effect and filtering effect of the filter, thereby enabling the filter to meet high selectivity requirements. In addition, due to the simple structure of the third coupling rib 50, the two resonant rods 21 of the adjacent resonant rod assemblies 20 can be directly cross-coupled through the third coupling rib 50, thereby simplifying the structure of the filter, which is conducive to the simplicity, lightweight and miniaturization of the filter.

[0110] Please refer to Figures 4, 5 and 6. In some embodiments of the present application, the filter housing 10 is provided with a second coupling window 152. The second coupling window 152 is provided between two resonant rods 21 of adjacent resonant rod assemblies 20 for cross-coupling the two resonant rods 21.

[0111] It should be noted that a second coupling window 152 may be provided on the isolation wall 15 as needed, and the second coupling window 152 is provided between two resonant rods 21 of adjacent resonant rod assemblies 20. Two resonant rods 21 facing each other along the second coupling window 152 can form a cross-coupling via the second coupling window 152. Furthermore, when the second coupling window 152 is provided over a large area, multiple groups of resonant rods 21 can share the second coupling window 152 to form a cross-coupling. That is, among the multiple groups of resonant rods 21 sharing the second coupling window 152, the corresponding two resonant rods 21 in each group of resonant rods 21 are cross-coupled via the second coupling window 152.

[0112] For example, as shown in Figures 4, 5, and 6, in one example of the filter, a partition wall 15 is provided between the first resonant rod assembly 20a, the second resonant rod assembly 20b, and the third resonant rod assembly 20c. The partition wall 15 is provided with a second coupling window 152 between the second resonant rod 21b and the fifth resonant rod 21e. The second resonant rod 21b and the fifth resonant rod 21e are cross-coupled through the second coupling window 152. Based on this, the second resonant rod 21b can transmit energy to the fifth resonant rod 21e via the third resonant rod 21c and the fourth resonant rod 21d in sequence, and can also directly transmit energy to the fifth resonant rod 21e through the second coupling window 152. These two paths between the second resonant rod 21b and the fifth resonant rod 21e have a phase difference of 180 degrees in the passband, thereby forming a transmission zero in the passband. The isolation wall 15 is also provided with a second coupling window 152 between the first resonant rod 21a and the sixth resonant rod 21f. The first resonant rod 21a and the sixth resonant rod 21f are cross-coupled through the second coupling window 152. Based on this, the first resonant rod 21a can transmit energy to the sixth resonant rod 21f via the second resonant rod 21b and the fifth resonant rod 21e in sequence, and can also directly transmit energy to the sixth resonant rod 21f through the second coupling window 152. These two paths between the first resonant rod 21a and the sixth resonant rod 21f have a phase difference of 180 degrees in the passband, thereby forming a transmission zero point in the passband. Among them, although the first resonant rod 21a can transmit energy to the sixth resonant rod 21f via the second resonant rod 21b, the third resonant rod 21c, the fourth resonant rod 21d, and the fifth resonant rod 21e, and can also directly transmit energy to the sixth resonant rod 21f through the second coupling window 152, the shortest path and the longest path between the first resonant rod 21a and the sixth resonant rod 21f do not meet the reverse condition, and a transmission zero point cannot be generated.

[0113] By adopting the above solution, cross-coupling can be formed between the two resonant rods 21 of adjacent resonant rod assemblies 20 as needed through the second coupling window 152 opened in the isolation wall 15. As a result, the two resonant rods 21 that are cross-coupled through the second coupling window 152 have a main signal transmission path that transmits energy sequentially through other resonant rods 21, and a direct signal transmission path that directly transmits energy through the second coupling window 152. The two transmission paths will have a phase difference of 180 degrees in the filter passband, thereby forming a transmission zero point in the filter passband, enabling the filter to form a multi-zero point solution, thereby enhancing the filter's out-of-band suppression effect and filtering effect, thereby enabling the filter to meet high selectivity requirements. In addition, due to the simple structure of the second coupling window 152, the two resonant rods 21 of the adjacent resonant rod assemblies 20 can be directly cross-coupled through the second coupling window 152, thereby simplifying the structure of the filter and facilitating the simplicity, lightweightness, and miniaturization of the filter.

[0114] Please refer to FIG. 9 . In some embodiments of the present application, at least one first coupling member 30 is disposed between two resonant rods 21 of adjacent resonant rod assemblies 20 to enable cross-coupling of the two resonant rods 21 .

[0115] It should be noted that a first coupling member 30 may be provided between the two resonant rods 21 of two adjacent resonant rod assemblies 20 as needed to form cross-coupling through the first coupling member 30. For example, as shown in FIG9 , the eighth resonant rod 21 h and the tenth resonant rod 21 j may be cross-coupled through the first coupling member 30.

[0116] It should also be noted that a fourth coupling window 154 may be opened on the isolation wall 15 as needed, and the fourth coupling window 154 is used for the first coupling member 30 to be installed therein.

[0117] By adopting the above solution, the two resonant rods 21 of adjacent resonant rod assemblies 20 can be connected and cross-coupled as needed through the first coupling member 30. This allows the two resonant rods 21 connected by the first coupling member 30 to have a main signal transmission path that transmits energy sequentially through other resonant rods 21, as well as a direct signal transmission path that directly transmits energy through the first coupling member 30. The two transmission paths will have a 180-degree phase difference in the filter passband, thereby forming a transmission zero point in the filter passband, enabling the filter to form a multi-zero point solution, thereby enhancing the filter's out-of-band suppression effect and filtering effect, thereby enabling the filter to meet high selectivity requirements. In addition, due to the simple structure of the first coupling member 30, the two resonant rods 21 of the adjacent resonant rod assemblies 20 can be directly cross-coupled through the first coupling member 30, thereby simplifying the structure of the filter and facilitating the simplicity, lightweighting, and miniaturization of the filter.

[0118] It should be noted that, between any two resonant rods 21 of any group of adjacent resonant rod assemblies 20, one of the third coupling ribs 50, the second coupling window 152, and the first coupling member 30 may be selectively provided. This allows cross-coupling to be achieved through one of the third coupling ribs 50, the second coupling window 152, and the first coupling member 30. Alternatively, multiple third coupling ribs 50, the second coupling window 152, and the first coupling member 30 may be selectively provided. This allows cross-coupling to be achieved through multiple third coupling ribs 50, the second coupling window 152, and the first coupling member 30, thereby enhancing coupling. For example, as shown in FIG4 , the eighth resonant rod 21 h and the tenth resonant rod 21 j can be cross-coupled through the second coupling window 152 and the third coupling rib 50, thereby enhancing coupling.

[0119] It should also be noted that when both the second coupling window 152 and the first coupling member 30 are provided between two resonant rods 21 of adjacent resonant rod assemblies 20, the second coupling window 152 and the fourth coupling window 154 can be a shared coupling window or two independently provided coupling windows. Similarly, when both the second coupling window 152 and the third coupling rib 50 are provided between two resonant rods 21 of adjacent resonant rod assemblies 20, the second coupling window 152 and the fifth coupling window 155 can be a shared coupling window or two independently provided coupling windows.

[0120] Please refer to Figures 3, 4, and 6. In some embodiments of the present application, the first coupling member 30 includes a first coupling portion 33, a connecting portion 34, and a second coupling portion 35. The connecting portion 34 extends from one of the resonant rods 21 toward the other resonant rod 21; the first coupling portion 33 is bent and connected to one end of the connecting portion 34, and extends toward the first plate 11, and the end of the first coupling portion 33 away from the connecting portion 34 is the first end 31; the second coupling portion 35 is bent and connected to the other end of the connecting portion 34, and extends toward the second plate 12, and the end of the second coupling portion 35 away from the connecting portion 34 is the second end 32.

[0121] It should be noted that, in this embodiment, “one of the resonant rods 21 ” and “the other resonant rod 21 ” refer to two resonant rods 21 coupled via the first coupling member 30 .

[0122] In the first coupling member 30, one end of the connecting portion 34 is close to one of the resonant rods 21, and the other end of the connecting portion 34 extends toward the other resonant rod 21. The connecting portion 34 can be connected between the first coupling portion 33 and the second coupling portion 35 to support the first coupling portion 33 and the second coupling portion 35. The extending direction of the connecting portion 34 can be parallel to the first plate 11 or the second plate 12, or non-parallel to the first plate 11 or the second plate 12, and this embodiment does not limit this. The extending direction of the connecting portion 34 can extend in any direction, upward, downward, left, right, forward, or backward, as needed, and this embodiment does not limit this. The extending path of the connecting portion 34 can be, but is not limited to, a straight line, and this embodiment does not limit this.

[0123] The first coupling portion 33 is bent and connected to one end of the connecting portion 34 and extends toward the first plate 11. Specifically, the first coupling portion 33 can be connected to the connecting portion 34 at its end or middle, and the first coupling portion 33 is bent relative to the connecting portion 34 (i.e., the first coupling portion 33 and the connecting portion 34 are intersecting). The end of the first coupling portion 33 away from the connecting portion 34 is the first end 31. Since the first end 31 needs to be connected to the first plate 11, the first coupling portion 33 can be extended toward the first plate 11, so that the first coupling portion 33 can be connected between the first plate 11 and the connecting portion 34. Based on this, the first coupling portion 33 can be grounded, the connection, fixation and assembly of the first coupling member 30 can be achieved, and the connecting portion 34 and the second coupling portion 35 can be supported, thereby ensuring and improving the assembly convenience and efficiency of the first coupling member 30 and the filter. On this basis, the first coupling portion 33 can also be disposed close to one of the resonant rods 21 so as to be disposed opposite and coupled to the resonant rod 21. Based on this, the first coupling member 30 can be conveniently, quickly, and reliably coupled to one of the resonant rods 21 via the first coupling portion 33. Furthermore, the coupling strength and coupling effect between the first coupling member 30 and the resonant rod 21 can be adjusted by adjusting the spacing between the first coupling portion 33 and the resonant rod 21. The extension direction and extension length of the first coupling portion 33 can be arbitrarily set as needed and are not limited in this embodiment.

[0124] The second coupling portion 35 is bent and connected to the end of the connecting portion 34 away from the first coupling portion 33, and extends toward the second plate 12. Specifically, the second coupling portion 35 can be connected to the connecting portion 34 at an end or a middle position, and the second coupling portion 35 is bent relative to the connecting portion 34 (i.e., the second coupling portion 35 and the connecting portion 34 are intersecting). The end of the second coupling portion 35 away from the connecting portion 34 is the second end 32. Because the second end 32 needs to be close to the second plate 12, the second coupling portion 35 can extend toward the second plate 12. Based on this, it is convenient to ensure that the first coupling member 30 can promote the desired coupling polarity between the two resonant rods 21 by "adjusting the abutment between the second end 32 and the second plate 12" and "adjusting the spacing between the second end 32 and the second plate 12 and adjusting the distance." On this basis, the second coupling portion 35 can also be disposed close to another resonant rod 21 so as to be disposed opposite and coupled to the resonant rod 21. Based on this, the first coupling member 30 can be conveniently, quickly, and reliably coupled to the other resonant rod 21 via the second coupling portion 35. Furthermore, the coupling strength and coupling effect between the first coupling member 30 and the resonant rod 21 can be adjusted by adjusting the spacing between the second coupling portion 35 and the resonant rod 21. The extension direction and extension length of the second coupling portion 35 can be arbitrarily set as needed and are not limited in this embodiment.

[0125] By adopting the above scheme, the first coupling member 30 can be connected to the first plate 11 by using the end of the first coupling part 33 away from the connecting part 34 as the first end 31, so as to conveniently and quickly realize the connection, fixation and assembly of the first coupling member 30 and realize grounding; the first coupling part 33 can also support the connecting part 34, and the connecting part 34 can support the second coupling part 35, so that the state between the first coupling part 33, the connecting part 34 and the second coupling part 35 is stable; the end of the second coupling part 35 away from the connecting part 34 can also be used as the second end 32 to approach the second plate 12, so as to facilitate the first coupling member 30 to promote the required coupling polarity between the two resonant rods 21 by means of "adjusting the second end 32 to abut against the second plate 12", "adjusting the spacing between the second end 32 and the second plate 12, and adjusting the distance".

[0126] By adopting the above solution, the first coupling member 30 can be positioned close to one of the resonant rods 21 via the first coupling portion 33, so that it can be positioned opposite and coupled to the resonant rod 21 via the first coupling portion 33. Based on this, the first coupling member 30 can be conveniently, quickly, and reliably coupled to one of the resonant rods 21 via the first coupling portion 33. Moreover, the coupling strength and coupling effect between the first coupling member 30 and the resonant rod 21 can be adjusted by adjusting the spacing between the first coupling portion 33 and the resonant rod 21. Similarly, the first coupling member 30 can be positioned close to another resonant rod 21 via the second coupling portion 35, so that it can be positioned opposite and coupled to the resonant rod 21 via the second coupling portion 35. Based on this, the first coupling member 30 can be conveniently, quickly, and reliably coupled to the other resonant rod 21 via the second coupling portion 35. Moreover, the coupling strength and coupling effect between the first coupling member 30 and the resonant rod 21 can be adjusted by adjusting the spacing between the second coupling portion 35 and the resonant rod 21.

[0127] Please refer to FIG. 3 , FIG. 4 , and FIG. 6 . In some embodiments of the present application, the first coupling portion 33 and the connecting portion 34 are vertically arranged, and the connecting portion 34 and the second coupling portion 35 are vertically arranged.

[0128] It should be noted that the first coupling portion 33 and the connecting portion 34 are arranged perpendicularly, that is, the angle formed between the first coupling portion 33 and the connecting portion 34 is a right angle. The connecting portion 34 and the second coupling portion 35 are arranged perpendicularly, that is, the angle formed between the connecting portion 34 and the second coupling portion 35 is a right angle.

[0129] By adopting the above solution, the first coupling member 30 can ensure and improve the connection strength between the first coupling portion 33 and the connecting portion 34 by arranging the first coupling portion 33 and the connecting portion 34 vertically; and can ensure and improve the connection strength between the connecting portion 34 and the second coupling portion 35 by arranging the connecting portion 34 and the second coupling portion 35 vertically; thereby effectively ensuring and improving the overall structural strength and structural reliability of the first coupling member 30, and ensuring and extending the service life of the first coupling member 30.

[0130] Referring to Figures 3, 5, and 6, in some embodiments of the present application, the first coupling portion 33 is perpendicular to the first plate 11. That is, the angle formed between the first coupling portion 33 and the first plate 11 is a right angle. Based on this, whether the first coupling member 30 and the first plate 11 are connected through an integral molding process or by welding, plugging, or snapping, when the first coupling portion 33 is perpendicular to the first plate 11, the connection operation of the first coupling member 30 and the first plate 11 is much simpler and easier, significantly reducing the workload of operators or equipment and improving the processing and assembly efficiency of the filter.

[0131] By adopting the above-mentioned scheme, the first coupling part 33 can be made perpendicular to the first plate 11, so that when the first end 31 of the first coupling part 33 is connected to the first plate 11, the difficulty of connecting the first coupling part 30 and the first plate 11 is reduced, and the connection strength and connection reliability between the first end 31 and the first plate 11 can be reliably guaranteed and improved, thereby effectively guaranteeing and improving the connection reliability and connection stability of the first coupling part 30 and the first plate 11, and improving the stability of the position and state of the first coupling part 30 relative to the first plate 11.

[0132] 3 and 6 , in some embodiments of the present application, the first coupling member 30 is integrally formed from a plate-like substrate. That is, the original plate-like substrate can be processed into the integrated first coupling member 30 by, but not limited to, cutting.

[0133] By adopting the above solution, the first coupling member 30 can be integrally formed from a plate-like substrate through cutting or other methods. This ensures and improves the processing convenience of the first coupling member 30, as well as the structural strength and reliability of the formed first coupling member 30, thereby ensuring and improving the performance and service life of the first coupling member 30. Furthermore, the assembly process of the first coupling member 30 itself can be simplified, thereby improving the assembly convenience and efficiency of the first coupling member 30 and the filter.

[0134] Please refer to FIG. 3 and FIG. 6 . In some embodiments of the present application, the first coupling member 30 is integrally connected to the first plate member 11 .

[0135] By adopting the above solution, the first coupling member 30 and the first plate 11 can be integrally connected and integrally formed, thereby facilitating the processing and forming of the first coupling member 30 and the first plate 11. This improves the processing convenience of the first coupling member 30, ensures and improves the connection strength between the first coupling member 30 and the first plate 11, ensures and improves the structural strength and reliability of the first coupling member 30, and improves the positional accuracy and state stability of the first coupling member 30 relative to the first plate 11, thereby ensuring and improving the performance and service life of the first coupling member 30. Furthermore, the assembly process between the first coupling member 30 and the first plate 11 can be simplified, thereby improving the assembly convenience and efficiency of the filter.

[0136] Please refer to Figures 3, 5, and 6. In some embodiments of the present application, the filter housing 10 includes a shell body 13 connected between a first plate 11 and a second plate 12. The first plate 11, the shell body 13, and the second plate 12 together enclose a closed inner cavity 14.

[0137] It should be noted that the component of the filter housing 10 connected between the second plate 12 and the first plate 11 is the shell body 13, which extends from the first plate 11 to the second plate 12. The shell body 13 can be, but is not limited to, a polygonal cylindrical shape, a circular cylindrical shape, or a cylindrical shape of any other irregular shape. For example, as shown in Figures 5 and 6, the shell body 13 is a rectangular cylindrical shape, and the shell body 13 includes a plurality of side walls 131 connected end to end in sequence. Adjacent side walls 131 can be connected as a whole or separately. Based on this, the filter housing 10 can be enclosed by the second plate 12, the shell body 13, and the first plate 11 to form a closed inner cavity 14.

[0138] As shown in FIG. 3 , FIG. 5 , and FIG. 6 , in a possible embodiment, the shell body 13 is separately connected to the second plate 12 , and the shell body 13 is integrally connected to the first plate 11 .

[0139] By adopting the above solution, the shell body 13 and the first plate 11 can be integrally formed, the second plate 12 can be independently formed relative to the shell body 13, and then the second plate 12 and the shell body 13 can be separately connected to form the filter housing 10 and a closed inner cavity 14. Based on this, the assembly process between the shell body 13 and the first plate 11 can be effectively saved, thereby effectively reducing the number of processes, and effectively ensuring and improving the processing convenience of the shell body 13 and the first plate 11, as well as the processing convenience of the second plate 12. In some embodiments, it is also convenient to integrally form the first coupling member 30 integrally connected to the first plate 11 when integrally forming the shell body 13 and the first plate 11, thereby improving processing convenience. Therefore, the assembly convenience and assembly efficiency of the filter can be effectively improved.

[0140] In another possible embodiment, the shell body 13 is integrally connected to the second plate 12 , and the shell body 13 is separately connected to the first plate 11 .

[0141] By adopting the above solution, the shell body 13 and the second plate 12 can be integrally formed, the first plate 11 can be independently formed relative to the shell body 13, and then the first plate 11 and the shell body 13 can be separately connected to form the filter housing 10, forming a closed inner cavity 14. Based on this, the assembly process between the second plate 12 and the shell body 13 can be effectively eliminated, thereby effectively reducing the number of steps and effectively ensuring and improving the processing convenience of the second plate 12 and the shell body 13, as well as the processing convenience of the first plate 11. In some embodiments, it is also convenient to simultaneously form the first coupling member 30 integrally connected to the first plate 11 when independently forming the first plate 11. For example, the first plate 11 and a substrate disposed upright on the first plate 11 can be integrally formed first, and then the substrate can be laser cut or other methods to form the first coupling member 30 to meet the required appearance and structure. This improves the processing convenience of the first coupling member 30. Therefore, the assembly convenience and efficiency of the filter can be effectively improved.

[0142] In another possible embodiment, the shell body 13 is separately connected to the second plate 12 , and the shell body 13 is separately connected to the first plate 11 .

[0143] By adopting the above solution, the second plate 12, the shell body 13, and the first plate 11 can be independently formed first, and then separately connected in sequence to assemble the filter housing 10, forming a closed inner cavity 14. Based on this, the process of machining the entire filter housing 10 to form the corresponding features can be greatly saved, thereby effectively reducing the process steps and effectively ensuring and improving the processing convenience of the second plate 12, the shell body 13, and the first plate 11. In some embodiments, it is also convenient to form the first coupling member 30 integrally connected to the first plate 11 at the same time as the first plate 11 is independently formed, thereby improving processing convenience. Therefore, the assembly convenience and assembly efficiency of the filter can be effectively improved.

[0144] Please refer to FIG. 5 and FIG. 7 . In some embodiments of the present application, the resonant rod assembly 20 is integrally formed from a sheet metal substrate.

[0145] By adopting the above-mentioned solution, by using a sheet metal substrate to integrally form the resonant rod assembly 20, on the one hand, the processing convenience, structural strength, and assembly convenience of the resonant rod assembly 20 can be guaranteed and improved, thereby ensuring and improving the assembly convenience of the filter; on the other hand, the volume and occupied space of the resonant rod assembly 20 can be reduced, thereby facilitating the miniaturization of the filter. Moreover, based on the configuration of this embodiment, the first plate member 11, the second plate member 12, the shell body 13, the resonant rod assembly 20, the partition wall 15, etc. can all adopt a thin plate-like structure, which is more conducive to the processing and design of the first coupling member 30. That is, the first coupling member 30 will be more compatible with the sheet metal filter in which the resonant rod assembly 20 is formed using a sheet metal substrate.

[0146] And, accordingly, the first coupling member 30 can also be designed as a plate-like structure or a sheet-like structure. Based on this, the first plate member 11, the second plate member 12, the shell body 13, the resonant rod assembly 20, the isolation wall 15, the first coupling member 30, etc. all adopt a thin plate-like structure, which can minimize the volume and weight of the filter to the greatest extent, and is conducive to the miniaturization and lightweight of the filter.

[0147] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A filter, characterized in that: include: A filter housing comprises a first plate member and a second plate member which are arranged opposite to each other; A resonant rod assembly, provided with at least one, and arranged in the filter housing, the resonant rod assembly is mounted on the first plate or the second plate, and the resonant rod assembly includes at least one resonant rod; There is at least one first coupling member, which is arranged between the two resonant rods and is used to couple the two resonant rods. The first coupling member has a first end and a second end opposite to each other, the first end is connected to the first plate, and the second end is close to the second plate.

2. The filter according to claim 1, characterized in that The second end abuts against the second plate.

3. The filter according to claim 1, characterized in that The second end is spaced apart from the second plate.

4. The filter according to claim 1, characterized in that The resonant rod assembly comprises a first coupling rib, wherein the first coupling rib is connected between two adjacent resonant rods of the same resonant rod assembly; And / or, at least one of the resonant rods is provided with a second coupling member, and the second coupling member is extended toward the adjacent resonant rod of the same resonant rod assembly; And / or, at least one of the first coupling members is disposed between two adjacent resonant rods of the same resonant rod assembly.

5. The filter according to claim 1, characterized in that The filter further comprises a second coupling rib, wherein the second coupling rib is connected between two resonant rods located at ends of adjacent resonant rod assemblies; And / or, the filter housing is provided with a first coupling window, the first coupling window is provided between two resonant rods located at ends of adjacent resonant rod assemblies, and is used to couple the two resonant rods; And / or, at least one of the first coupling members is disposed between two of the resonant rods located at ends of adjacent resonant rod assemblies.

6. The filter according to claim 1, characterized in that The filter further comprises a third coupling rib, wherein the third coupling rib is connected between two resonant rods of the adjacent resonant rod assemblies and is used to cross-couple the two resonant rods; And / or, the filter housing is provided with a second coupling window, and the second coupling window is provided between two resonant rods of the adjacent resonant rod assemblies, for cross-coupling the two resonant rods; And / or, at least one of the first coupling members is disposed between two of the resonant rods of adjacent resonant rod assemblies to enable cross-coupling of the two resonant rods.

7. The filter according to claim 1, characterized in that The first coupling member includes a first coupling portion, a connecting portion, and a second coupling portion, wherein the connecting portion extends from one of the resonant rods toward the other resonant rod; the first coupling portion is bent and connected to one end of the connecting portion, and extends toward the first plate, and the end of the first coupling portion away from the connecting portion is the first end; the second coupling portion is bent and connected to the other end of the connecting portion, and extends toward the second plate, and the end of the second coupling portion away from the connecting portion is the second end.

8. The filter according to claim 7, characterized in that The first coupling portion is disposed perpendicularly to the connecting portion, and the connecting portion is disposed perpendicularly to the second coupling portion.

9. The filter according to claim 7, characterized in that The first coupling portion is perpendicular to the first plate.

10. The filter according to any one of claims 1 to 9, characterized in that The first coupling member is integrally formed from a plate-shaped substrate.

11. The filter according to any one of claims 1 to 9, characterized in that: The first coupling member is integrally connected to the first plate member.

12. The filter according to any one of claims 1 to 9, characterized in that The filter housing comprises a housing body connected between the first plate member and the second plate member, wherein the first plate member, the housing body and the second plate member together enclose a closed inner cavity; Among them, the shell body is separately connected to the second plate, and the shell body is integrally connected to the first plate; or, the shell body is integrally connected to the second plate, and the shell body is separately connected to the first plate; or, the shell body is separately connected to the second plate, and the shell body is separately connected to the first plate.

13. The filter according to any one of claims 1 to 9, characterized in that The resonant rod assembly is integrally formed from a sheet metal substrate.

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