Filter and communication equipment

Abstract

The invention relates to a filter and communication equipment. The filter comprises a resonant cavity. The resonant cavity is a metal part and comprises a main body, the main body comprises a bottom plate and a plurality of side panels, all the side panels are connected with the bottom plate and are sequentially arranged around the periphery of the bottom plate, all the side panels and the bottom plate are sheet metal parts which are integrally punched and formed, and the side edges of every two adjacent side panels are mutually connected and fixed. When the main body of the resonant cavity is manufactured, a first plane metal plate can be machined through a sheet metal technology, then the first plane metal plate is punched or bent to obtain a bottom plate and a plurality of side panels connected to the periphery of the bottom plate, and then the side edges of every two adjacent side panels are mutually connected and fixed. And after the first plane metal plate is processed, the resonator assembly is fixedly connected with the bottom plate or the side panel. Therefore, the volume size of the filter can be reduced, and product miniaturization is realized; in addition, the weight is reduced, and the production cost is reduced; in addition, the influence on the electrical performance is small while the production efficiency is improved.

Description

Technical Field

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

[0002] The filter is a frequency-selective device and an indispensable part of communication equipment. Improving filter suppression, reducing insertion loss, and taking product cost into account are issues that must be considered in filter design. The filter in the related technology includes a resonator and a resonant cavity that matches the resonator. Among them, the resonant cavity is usually produced through various processes such as machining, cold stamping, die casting, and sintering. However, the filter products produced are large in size, heavy in weight, and high in cost, and the production efficiency of the filter products is low. Summary of the invention

[0003] Based on this, it is necessary to overcome the defects of the prior art and provide a filter and communication equipment, which can improve production efficiency, reduce weight, reduce costs, and reduce size.

[0004] A filter, comprising:

[0005] A resonant cavity, wherein the resonant cavity is a metal part, the resonant cavity comprises a main body and a cover plate, the main body is connected to the cover plate, the main body comprises a bottom plate and a plurality of side panels, the bottom plate and the cover plate are arranged opposite to each other, all the side panels are connected to the bottom plate and are arranged in sequence around the periphery of the bottom plate, all the side panels and the bottom plate are integrally stamped sheet metal parts, and the sides of two adjacent side panels are connected and fixed to each other; and

[0006] A resonator component is disposed inside the resonant cavity and is connected to the resonant cavity.

[0007] In one embodiment, the sides of two adjacent side panels are fixed by welding, bonding with conductive glue, or connected and fixed by fasteners; and / or the resonator assembly is fixed to the resonant cavity by welding, bonding with conductive glue, or connected and fixed by fasteners.

[0008] In one embodiment, the side panel includes a connecting end connected to the bottom plate, the position where the side panel is connected to the bottom plate is a folding position, and a folding notch is provided on at least one side of the connecting end along the extension direction of the folding position.

[0009] In one embodiment, the resonator assembly includes a plurality of first resonant branches arranged in parallel and spaced apart; the first resonant branches are connected and fixed to the resonant cavity; the filter also includes at least one isolating element, the isolating element is correspondingly arranged between two adjacent first resonant branches, and the isolating element is connected and fixed to the bottom plate.

[0010] In one embodiment, the isolation member is fixed to the base plate by welding, bonding with conductive adhesive, or connecting with fasteners.

[0011] In one embodiment, the filter also includes a first connector and multiple second connectors arranged on the main body; the resonator assembly also includes a second resonant branch; the second resonant branch is connected and fixed to the resonant cavity; one end of all the first resonant branches is electrically connected to the second resonant branch, the second resonant branch is electrically connected to the first connector, and the other end of each of the first resonant branches is electrically connected to each of the second connectors accordingly.

[0012] In one embodiment, the first resonant branch includes a first resonator and a first feeding branch, the first resonator is connected to the first feeding branch, and the first resonator and the first feeding branch are integrally stamped sheet metal parts; and / or,

[0013] The second resonant branch includes a second resonator and a second feeding branch. The second resonator is connected to the second feeding branch. The second resonator and the second feeding branch are integrally stamped sheet metal parts.

[0014] In one embodiment, the first resonator is provided in plurality, and the plurality of first resonators are sequentially arranged at intervals along the extension direction of the first feeding branch and are all connected to the first feeding branch.

[0015] In one embodiment, the second resonator is provided in plurality, and the plurality of second resonators are arranged in sequence and spaced apart along the extension direction of the second feeding branch and are all connected to the second feeding branch; each second resonator is also connected to each first feeding branch accordingly.

[0016] In one embodiment, the second resonator is provided with a plug hole, and the first feeding branch is provided with an insertion portion, and the insertion portion is inserted into the plug hole and fixed to the second resonator by welding.

[0017] In one embodiment, the first resonator includes a first support member and a first planar coupling member, the first support member is connected to the first planar coupling member; the first support member and the first planar coupling member are integrally stamped sheet metal parts; and / or,

[0018] The second resonator includes a second support member and a second planar coupling member, wherein the second support member is connected to the second planar coupling member; the second support member and the second planar coupling member are integrally stamped sheet metal members.

[0019] In one embodiment, at least one of the first planar coupling member and the second planar coupling member is provided with a tuning hole, and a position-adjustable tuning member is provided on the cover plate, and the tuning member is arranged corresponding to the position of the tuning hole.

[0020] In one embodiment, the first resonator and the second resonator are each connected and fixed to the bottom plate.

[0021] A communication device comprises the filter.

[0022] In the above-mentioned filter and communication equipment, since all the side panels and the bottom plate of the main body are sheet metal parts stamped and formed as a whole, the sides of the two adjacent side panels are connected and fixed to each other. That is, when the main body of the resonant cavity is manufactured, the first flat metal plate can be processed by sheet metal processing, and then the first flat metal plate can be stamped or bent to obtain the bottom plate and multiple side panels connected to the periphery of the bottom plate, and then the sides of the two adjacent side panels are connected and fixed to each other. After the first flat metal plate is processed, the resonator assembly is also connected and fixed to the bottom plate or the side panel. It can be seen from this that the volume size of the filter can be reduced and the product can be miniaturized; in addition, the weight can be reduced and the production cost can be reduced; in addition, the production efficiency is improved while the electrical performance is less affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of a filter according to an embodiment of the present application when the cover is opened.

[0024] Figure 2 This is a structural diagram of a filter according to an embodiment of the present application with the cover plate removed.

[0025] Figure 3 for Figure 2 Another perspective structural diagram of the structure shown.

[0026] Figure 4 for Figure 3 Structural diagram of the resonant cavity after it is expanded in the structure shown.

[0027] Figure 5 for Figure 4 Structural diagram of the partition plate after decomposition in the structure shown.

[0028] Figure 6 for Figure 4 Block diagram of the resonator assembly in the illustrated configuration.

[0029] Figure 7 for Figure 6 Structural diagram of the first resonant branch in the structure shown.

[0030] Figure 8 for Figure 6 Structural diagram of the second resonant branch in the structure shown.

[0031] 10. resonant cavity; 11. main body; 111. bottom plate; 112. side panel; 1121. folding notch; 113. first plane metal plate; 114. first through hole; 115. second through hole; 12. cover plate; 121. tuning element; 20. resonator assembly; 21. first resonant branch; 211. first resonator; 2111. first support member; 2112. first planar coupling member; 212. first feeding branch; 2121. insertion portion; 22. second resonant branch; 221. second resonator; 2211. second support member; 2212. second planar coupling member; 222. second feeding branch; 223. jack; 23. tuning hole; 30. isolation plate; 31. isolation member; 32. connector; 321. avoidance hole; 40. first connector; 50. second connector. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] See also Figures 1 to 3 , a filter provided in one embodiment of the present application, the filter may be, for example, a simplexer, a duplexer, a splitter, a combiner or a tower-top amplifier, etc., which is not limited here. Specifically, the filter includes a resonant cavity 10 and a resonator assembly 20. The resonant cavity 10 is a metal part, and the resonant cavity 10 includes a main body 11 and a cover plate 12. The main body 11 is connected to the cover plate 12, and the main body 11 includes a bottom plate 111 and a plurality of side panels 112. The bottom plate 111 and the cover plate 12 are arranged opposite to each other, and all the side panels 112 are connected to the bottom plate 111 and arranged in sequence around the outer periphery of the bottom plate 111, and all the side panels 112 and the bottom plate 111 are integrally stamped sheet metal parts. The sides of two adjacent side panels 112 are connected and fixed to each other. The resonator assembly 20 is arranged inside the resonant cavity 10, and the resonator assembly 20 is connected to the resonant cavity 10.

[0034] See also Figure 3 and Figure 4 , Figure 4 It is indicated in Figure 3 The structure diagram of the main body 11 after expansion is shown, in other words, Figure 4 All the side panels 112 and the bottom panel 111 shown in the figure are unfolded to form a first flat metal plate 113. All the side panels 112 in the first flat metal plate 113 are turned up and connected and fixed to each other, so that the following can be obtained: Figure 3 The main body 11 shown. Specifically, the main body 11 is, for example, a rectangular parallelepiped structure, and accordingly, the number of the side panels 112 is, for example, four, and they are arranged opposite to each other. Of course, when the main body 11 is set to other structural forms, the number and shape of the side panels 112 are adjusted accordingly according to the structural form of the main body 11.

[0035] In the above-mentioned filter, since all the side panels 112 of the main body 11 and the bottom plate 111 are integrally stamped sheet metal parts, the sides of two adjacent side panels 112 are connected and fixed to each other. That is, when the main body 11 of the resonant cavity 10 is manufactured, the first flat metal plate 113 can be first processed by sheet metal processing, and then the first flat metal plate 113 is stamped or bent to obtain the bottom plate 111 and a plurality of side panels 112 connected to the periphery of the bottom plate 111, and then the sides of the two adjacent side panels 112 are connected and fixed to each other. After the first flat metal plate 113 is processed, the resonator assembly 20 is also connected and fixed to the bottom plate 111 or the side panel 112. It can be seen from this that the volume size of the filter can be reduced to achieve product miniaturization; in addition, the weight can be reduced and the production cost can be reduced; in addition, the production efficiency is improved while the electrical performance is less affected.

[0036] In some embodiments, the sides of two adjacent side panels 112 include but are not limited to welding fixation, fixing with conductive adhesive, or connecting and fixing with fasteners, etc., which can be flexibly adjusted and set according to actual needs and are not limited here. Among them, the fasteners are, for example, screws, pins, rivets, etc. In this embodiment, the sides of two adjacent side panels 112 are specifically fixed by welding, which can achieve a stable and reliable overall structure of the main body 11 and a high assembly efficiency.

[0037] In some embodiments, the resonator assembly 20 and the resonant cavity 10 include but are not limited to welding fixation, fixing with conductive adhesive, or fixing with fasteners, etc., which can be flexibly adjusted and set according to actual needs, and are not limited here. In this embodiment, the resonator assembly 20 and the resonant cavity 10 are specifically fixed by welding, which can achieve the resonator assembly 20 Stably mounted on the resonant cavity 10, the assembly efficiency is high.

[0038] See also Figure 3 and Figure 4In one embodiment, the side panel 112 includes a connection end connected to the bottom plate 111. The position where the side panel 112 is connected to the bottom plate 111 is a folding position. A folding notch 1121 is provided on at least one side of the connection end along the extension direction of the folding position. In this way, since the folding notch 1121 is provided on the connection end, the side panel 112 is easily bent at the folding notch 1121 when subjected to force, so that the first flat metal plate 113 can be easily stamped or bent, so that the side panel 112 is turned up and, for example, perpendicular to the bottom plate 111.

[0039] Specifically, the bottom plate 111 is set as a rectangular plate. The extension direction of the side panel 112 and the bottom plate 111 at the folded position also refers to the extension direction of the side edge of the bottom plate 111 connected to the side panel 112. When the side panel 112 is connected to the long side of the bottom plate 111, the extension direction of the side panel 112 and the bottom plate 111 at the folded position also refers to the extension direction of the long side of the bottom plate 111; when the side panel 112 is connected to the short side of the bottom plate 111, the extension direction of the side panel 112 and the bottom plate 111 at the folded position also refers to the extension direction of the short side of the bottom plate 111.

[0040] In this embodiment, in order to make it easier to fold the side panel 112, folding notches 1121 are provided on opposite sides of the connection end along the extension direction of the folding position. Specifically, since the length of the long side of the bottom plate 111 is greater than the length of the short side, correspondingly, the length dimension of the side panel 112 connected to the long side of the bottom plate 111 is greater than the length dimension of the side panel 112 connected to the short side of the bottom plate 111. When the length dimension of the side panel 112 is longer, the side panel 112 is more difficult to bend; conversely, when the length dimension of the side panel 112 is smaller, the side panel 112 is less difficult to bend. In this embodiment, folding notches 1121 are provided on opposite sides of the connection end of the side panel 112 arranged on the long side of the bottom plate 111, so that the side panel 112 on the long side of the bottom plate 111 is easy to bend and form when subjected to force. There is no need to set a folding notch 1121 on the connecting end of the side panel 112 arranged on the short side of the bottom plate 111, so there is no need to perform a process step of processing the folding notch 1121 on the side panel 112 corresponding to the short side of the bottom plate 111, thereby ensuring a higher production efficiency of the first flat metal plate 113.

[0041] See also Figure 4 , Figure 6 and Figure 7 , Figure 4 Shows Figure 3 The structure of the resonant cavity 10 after it is unfolded is shown. Figure 6 Shows Figure 4 Block diagram of resonator assembly 20 in the illustrated configuration. Figure 7 Shows Figure 6The structure diagram of the first resonant branch 21 in the structure shown. In one embodiment, the resonator assembly 20 includes a plurality of first resonant branches 21 arranged in parallel and spaced apart. The first resonant branch 21 is connected and fixed to the resonant cavity 10.

[0042] Also, see Figure 4 and Figure 5 The filter further includes at least one isolating member 31. The isolating member 31 is correspondingly disposed between two adjacent first resonant branches 21. The isolating member 31 is connected and fixed to the bottom plate 111. In this way, the isolating member 31 can isolate the two adjacent first resonant branches 21 to prevent interference between the two adjacent first resonant branches 21.

[0043] Specifically, the isolation member 31 may be a metal member, or may be a non-metal member having a metal layer formed on the outer wall thereof by, for example, electroplating or printing.

[0044] In some embodiments, the isolating member 31 and the bottom plate 111 include but are not limited to welding fixation, fixing with conductive adhesive, or fixing with fasteners, etc., which can be flexibly adjusted and set according to actual needs and are not limited here. In this embodiment, the isolating member 31 and the bottom plate 111 are specifically fixed by welding, which can achieve a stable connection between the isolating member 31 and the bottom plate 111, and the assembly efficiency is high.

[0045] When the number of the first resonant branches 21 is two, the number of the isolating element 31 is one; when the number of the first resonant branches 21 is at least three, the number of the isolating element 31 is correspondingly at least two.

[0046] See also Figures 4 to 6 In this embodiment, specifically, three first resonant branches 21 are provided, and two spacing regions are formed in the three first resonant branches 21. Two isolators 31 are provided, and two isolators 31 are respectively provided in the two spacing regions to isolate the three first resonant branches 21. Optionally, a connector 32 is connected between the two isolators 31. The two isolators 31 and the connector 32 are an integrated structure. More specifically, the two isolators 31 and the connector 32 are, for example, plates, and are obtained by stamping or bending the isolation plate 30, so that the production efficiency is relatively high. In addition, the isolation plate 30 is welded and fixed to the bottom plate 111.

[0047] See also Figures 2 to 4In one embodiment, the filter further includes a first connector 40 and a plurality of second connectors 50 disposed on the main body 11. Specifically, the first connector 40 is disposed on one of the side surfaces, and the plurality of second connectors 50 are disposed on another side panel 112. The resonator assembly 20 further includes a second resonant branch 22. The second resonant branch 22 is connected and fixed to the resonant cavity 10. One end of all the first resonant branches 21 is electrically connected to the second resonant branch 22, the second resonant branch 22 is electrically connected to the first connector 40, and the other end of each first resonant branch 21 is electrically connected to each second connector 50 accordingly. In this way, when working, multiple signals are input through the plurality of second connectors 50 respectively, and the signals of the plurality of second connectors 50 are respectively transmitted to the plurality of first resonant branches 21, and are output through the first connector 40 after being combined by the second resonant branch 22, thereby realizing the combining effect; conversely, the signals input by the first connector 40 can also be output to the outside through the plurality of second connectors 50 respectively.

[0048] See also Figures 2 to 4 In some embodiments, the main body 11 is provided with a first through hole 114. The inner core of the first connector 40 passes through the first through hole 114 and is electrically connected to the second resonant branch 22. In addition, the main body 11 is provided with a plurality of second through holes 115. The inner cores of the respective second connectors 50 pass through the respective second through holes 115 and are electrically connected to the corresponding first resonant branch 21. The electrical connection in this embodiment can be achieved by coupling feeding or by physical connection, which is not limited here.

[0049] See also Figures 2 to 4 On the basis of the above-mentioned embodiment, an avoidance hole 321 corresponding to the position of one of the second through holes 115 is provided on the isolation plate 30. The avoidance hole 321 serves to avoid the inner core of one of the second connectors 50, so that the inner core of the second connector 50 passes through the second through hole 115 and the avoidance hole 321 in sequence and is connected to the first resonant branch 21. Specifically, the aperture of the second through hole 115 is larger than the aperture of the avoidance hole 321, or the aperture of the avoidance hole 321 is larger than the aperture of the second through hole 115. In this way, after the side panel 112 is flipped up and folded, there is a positioning error between the second through hole 115 and the avoidance hole 321, but because the apertures of the second through hole 115 and the avoidance hole 321 are set to be larger and smaller, it can be ensured that the inner core of the second connector 50 can pass through the second through hole 115 and the avoidance hole 321 in sequence and be connected to the first resonant branch 21.

[0050] See also Figures 6 to 8In one embodiment, the first resonant branch 21 includes a first resonator 211 and a first feeding branch 212. The first resonator 211 is connected to the first feeding branch 212, and the first resonator 211 and the first feeding branch 212 are integrally stamped sheet metal parts. In addition, the second resonant branch 22 includes a second resonator 221 and a second feeding branch 222. The second resonator 221 is connected to the second feeding branch 222, and the second resonator 221 and the second feeding branch 222 are integrally stamped sheet metal parts. In this way, the production efficiency of the first resonant branch 21 and the second resonant branch 22 is relatively high, which can reduce weight and reduce production costs.

[0051] Among them, the first resonant branch 21 is a second planar metal plate after being unfolded. In other words, in this embodiment, the second planar metal plate can obtain the first resonant branch 21 by stamping or bending. Optionally, the second planar metal plate is obtained by sheet metal processing. Similarly, the second resonant branch 22 is a third planar metal plate after being unfolded. In other words, in this embodiment, the third planar metal plate can obtain the second resonant branch 22 by stamping or bending. Optionally, the third planar metal plate is obtained by sheet metal processing.

[0052] In one embodiment, the first resonator 211 is provided in plurality, and the plurality of first resonators 211 are sequentially arranged at intervals along the extension direction of the first feeding branch 212 and are all connected to the first feeding branch 212. Thus, by adjusting the number of the first resonators 211, the performance index of the first resonant branch 21 can be improved and adjusted accordingly.

[0053] In one embodiment, there are multiple second resonators 221 , which are arranged in sequence along the extension direction of the second feeding branch 222 and are all connected to the second feeding branch 222 ; each second resonator 221 is also connected to each first feeding branch 212 .

[0054] In some embodiments, the connection method between the second resonator 221 and the first feeding branch 212 includes but is not limited to welding, fixing with conductive adhesive, or fixing with fasteners, etc., which can be flexibly adjusted and set according to actual needs and are not limited here.

[0055] In one embodiment, the second resonator 221 is provided with a socket 223, and the first feed branch 212 is provided with an insertion portion 2121, and the insertion portion 2121 is inserted into the socket 223 and welded and fixed to the second resonator 221. In this way, during the assembly process, after the insertion portions 2121 of each first feed branch 212 are respectively inserted into the sockets 223 of each second resonator 221, preliminary positioning can be achieved, so that it is convenient to weld and fix each first feed branch 212 and each second resonator 221 accordingly. In addition, after the first resonant branch 21 and the second resonant branch 22 are welded and fixed, the stability is good, and the electrical performance indicators meet the requirements.

[0056] As some optional solutions, the second resonant branch 22 and the two first resonant branches 21 connected to the opposite ends of the second resonant branch 22 are an integrated structure. In this way, the second resonant branch 22 and the two first resonant branches 21 at the opposite ends are formed by integral stamping or bending, so that there is no need to weld the second resonant branch 22 and the first resonant branches 21 at the two ends, so that the production efficiency is improved.

[0057] In one embodiment, the first resonator 211 includes a first support member 2111 and a first planar coupling member 2112. The first support member 2111 is connected to the first planar coupling member 2112. The first support member 2111 and the first planar coupling member 2112 are sheet metal parts that are stamped and formed as one piece. In addition, the second resonator 221 includes a second support member 2211 and a second planar coupling member 2212. The second support member 2211 is connected to the second planar coupling member 2212. The second support member 2211 and the second planar coupling member 2212 are sheet metal parts that are stamped and formed as one piece.

[0058] See also Figure 1 and Figure 2 In one embodiment, at least one of the first planar coupling member 2112 and the second planar coupling member 2212 is provided with a tuning hole 23, and a position-adjustable tuning member 121 is provided on the cover plate 12, and the tuning member 121 is arranged corresponding to the position of the tuning hole 23. In this way, when the tuning member 121 is reciprocated up and down on the cover plate 12, the frequency can be adjusted. Specifically, by making the tuning member 121 reciprocate along the axial direction, the depth of the tuning member 121 inserted into the resonant cavity 10 and the tuning hole 23 is adjusted, and then the frequency is adjusted to meet the use needs. Specifically, when the depth of the tuning member 121 inserted into the resonant cavity 10 and the tuning hole 23 is deeper, the frequency is smaller; when the depth of the tuning member 121 inserted into the resonant cavity 10 and the tuning hole 23 is shallower, the frequency is larger.

[0059] Specifically, the first planar coupling member 2112 and the second planar coupling member 2212 are both provided with tuning holes 23 , and a plurality of tuning members 121 are provided on the cover plate 12 , and each tuning member 121 is disposed at a position corresponding to each tuning hole 23 .

[0060] In one embodiment, the first resonator 211 and the second resonator 221 are each connected and fixed to the bottom plate 111 .

[0061] Specifically, the first resonator 211 and the second resonator 221 are fixed to the bottom plate 111 by welding, bonding with conductive adhesive, or connecting and fixing with fasteners, etc., and can be flexibly adjusted and set according to actual needs, which is not limited here. In this embodiment, the first resonator 211 and the second resonator 221 are fixed to the bottom plate 111 by welding. Specifically, the first support member 2111 and the second support member 2211 are fixedly arranged on the bottom plate 111 by welding.

[0062] See also Figures 1 to 3 Another embodiment of the present application provides a communication device, the communication device includes the filter of any of the above embodiments.

[0063] In the above-mentioned communication equipment, since all the side panels 112 of the main body 11 and the bottom plate 111 are integrally stamped sheet metal parts, the sides of two adjacent side panels 112 are connected and fixed to each other. That is, when the main body 11 of the resonant cavity 10 is manufactured, the first flat metal plate 113 can be first processed by sheet metal processing, and then the first flat metal plate 113 is stamped or bent to obtain the bottom plate 111 and a plurality of side panels 112 connected to the periphery of the bottom plate 111, and then the sides of the two adjacent side panels 112 are connected and fixed to each other. After the first flat metal plate 113 is processed, the resonator assembly 20 is also connected and fixed to the bottom plate 111 or the side panel 112. It can be seen from this that the volume size of the filter can be reduced to achieve product miniaturization; in addition, the weight can be reduced and the production cost can be reduced; in addition, the electrical performance is less affected while the production efficiency is improved.

[0064] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does 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 the present application.

[0065] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0066] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0067] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0068] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0069] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A filter, characterized in that: The filter comprises: A resonant cavity, wherein the resonant cavity is a metal part, the resonant cavity comprises a main body and a cover plate, the main body is connected to the cover plate, the main body comprises a bottom plate and a plurality of side panels, the bottom plate and the cover plate are arranged opposite to each other, all the side panels are connected to the bottom plate and are arranged in sequence around the periphery of the bottom plate, all the side panels and the bottom plate are integrally stamped sheet metal parts, and the sides of two adjacent side panels are connected and fixed to each other; and A resonator component is disposed inside the resonant cavity and is connected to the resonant cavity.

2. The filter according to claim 1, characterized in that The sides of two adjacent side panels are fixed by welding, bonding with conductive glue or connected and fixed by fasteners; and / or the resonator assembly is fixed to the resonant cavity by welding, bonding with conductive glue or connected and fixed by fasteners.

3. The filter according to claim 1, characterized in that The side panel comprises a connection end connected to the bottom plate, the position where the side panel is connected to the bottom plate is a folding position, and a folding notch is provided on at least one side of the connection end along the extension direction of the folding position.

4. The filter according to claim 1, characterized in that The resonator assembly includes a plurality of first resonant branches arranged in parallel and at intervals; the first resonant branches are connected and fixed to the resonant cavity; the filter also includes at least one isolating member, the isolating member is correspondingly arranged between two adjacent first resonant branches, and the isolating member is connected and fixed to the bottom plate.

5. The filter according to claim 4, characterized in that The isolating member is fixed to the bottom plate by welding, bonding with conductive adhesive or connecting with fasteners.

6. The filter according to claim 4, characterized in that The filter also includes a first connector and multiple second connectors arranged on the main body; the resonator assembly also includes a second resonant branch; the second resonant branch is connected and fixed to the resonant cavity; one end of all the first resonant branches is electrically connected to the second resonant branch, the second resonant branch is electrically connected to the first connector, and the other end of each of the first resonant branches is electrically connected to each of the second connectors accordingly.

7. The filter according to claim 6, characterized in that The first resonant branch includes a first resonator and a first feeding branch, the first resonator is connected to the first feeding branch, and the first resonator and the first feeding branch are integrally stamped sheet metal parts; and / or, The second resonant branch includes a second resonator and a second feeding branch. The second resonator is connected to the second feeding branch. The second resonator and the second feeding branch are integrally stamped sheet metal parts.

8. The filter according to claim 7, characterized in that The first resonator is provided in plurality, and the plurality of first resonators are sequentially arranged at intervals along the extension direction of the first feeding branch and are all connected to the first feeding branch.

9. The filter according to claim 7, characterized in that There are multiple second resonators, which are arranged in sequence and spaced apart along the extension direction of the second feeding branch and are all connected to the second feeding branch; each of the second resonators is also correspondingly connected to each of the first feeding branches.

10. The filter according to claim 9, characterized in that The second resonator is provided with an insertion hole, and the first feeding branch is provided with an insertion portion, which is inserted into the insertion hole and fixed to the second resonator by welding.

11. The filter according to claim 7, characterized in that The first resonator comprises a first support member and a first planar coupling member, wherein the first support member is connected to the first planar coupling member; the first support member and the first planar coupling member are integrally stamped sheet metal members; and / or, The second resonator includes a second support member and a second planar coupling member, wherein the second support member is connected to the second planar coupling member; the second support member and the second planar coupling member are integrally stamped sheet metal members.

12. The filter according to claim 11, characterized in that At least one of the first planar coupling member and the second planar coupling member is provided with a tuning hole, and a position-adjustable tuning member is provided on the cover plate, and the tuning member is arranged corresponding to the position of the tuning hole.

13. The filter according to claim 7, characterized in that The first resonator and the second resonator are respectively connected and fixed to the bottom plate.

14. A communication device, characterized in that: The communication device comprises the filter according to any one of claims 1 to 13.

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