A filter and a communication device

Abstract

The present application discloses a filter and a communication device. The filter includes: a housing, a plurality of filter branches, and a plurality of first mounting holes. The housing has a first direction and a second direction, and the first direction is perpendicular to the second direction; the plurality of filter branches are arranged on the housing, and the plurality of filter branches are arranged along the second direction; the plurality of first mounting holes are used for mounting connectors, the first mounting holes are arranged in one-to-one correspondence with the filter branches, and the filter branches are connected to the corresponding first mounting holes through taps, wherein the lengths of each tap are equal. In this way, the structure can be simplified and the production cost can be reduced.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and particularly to a filter and a communication device. Background Art

[0002] In a base station system of mobile communication, a transmitting antenna transmits a communication signal carrying communication data within a specific frequency range, and a receiving antenna receives the communication signal.

[0003] Due to the influence of noise, the communication signal received by the receiving antenna not only includes the communication signal carrying communication data within the above specific frequency range, but also includes many clutter or interference signals outside the above specific frequency range. To obtain the communication signal carrying communication data within the specific frequency range transmitted by the transmitting antenna from the signal received by the receiving antenna, a filter is usually required for filtering to filter out the clutter or interference signals outside the specific frequency of the communication signal carrying communication data.

[0004] The inventors of this application found in long-term R & D work that there are significant differences in the shape and size of the taps corresponding to each filtering branch in the existing filter, resulting in a large number of types of taps, which brings troubles to parts manufacturers, material control, assembly and debugging, etc., and the production cost is relatively high. Summary of the Invention

[0005] This application provides a filter and a communication device to simplify the structure and reduce the production cost.

[0006] To solve the above technical problems, a technical solution adopted in this application is: providing a filter. The filter includes: a housing having a first direction and a second direction, the first direction and the second direction being perpendicular; multiple filtering branches disposed on the housing, the multiple filtering branches being arranged along the second direction; a plurality of first mounting holes for mounting connectors, the first mounting holes being provided in one-to-one correspondence with the filtering branches, and the filtering branches being connected to the corresponding first mounting holes through taps, wherein the length of each tap is equal.

[0007] Wherein, the cavity structures of each filtering branch are the same.

[0008] Wherein, the filter further includes a cover plate, and second mounting holes are further provided on the housing, and the second mounting holes are used to cooperate with fasteners to fix the housing and the cover plate.

[0009] Wherein, the plurality of first mounting holes and the second mounting holes are both arranged along the second direction on the side wall of the housing, and two adjacent first mounting holes form a group, and the plurality of second mounting holes are arranged at intervals with respect to the multiple groups of first mounting holes.

[0010] Among them, the tap includes a first tap and a second tap. One of two adjacent filter branches is connected to one of two adjacent first mounting holes through the first tap, and the other of the two adjacent filter branches is connected to the other of the two adjacent first mounting holes through the second tap. Among them, the structures of the first tap and the second tap are symmetrically arranged.

[0011] Among them, the filter branch is composed of N sequentially coupled filter cavities, and the N filter cavities are arranged in M columns along the second direction.

[0012] Among them, N is 10, M is 2. The first filter cavity, the third filter cavity, the sixth filter cavity, the seventh filter cavity and the tenth filter cavity are arranged in the same column, and the second filter cavity, the fourth filter cavity, the fifth filter cavity, the eighth filter cavity and the ninth filter cavity are arranged in the same column. Among them, the third filter cavity is adjacent to the second filter cavity and the fourth filter cavity, the sixth filter cavity is adjacent to the fourth filter cavity and the fifth filter cavity, the seventh filter cavity is adjacent to the fifth filter cavity and the eighth filter cavity, the tenth filter cavity is adjacent to the eighth filter cavity and the ninth filter cavity, and the first filter cavity is connected to the tap.

[0013] Among them, cross-couplings are respectively formed between the first filter cavity and the third filter cavity, between the third filter cavity and the sixth filter cavity, and between the seventh filter cavity and the tenth filter cavity to form three coupling zeros.

[0014] Among them, an input terminal and an output terminal are further provided on the housing. The input terminal is connected to the first filter cavity through a connector, and the output terminal is connected to the tenth filter cavity through another connector.

[0015] To solve the above technical problems, a technical solution adopted in this application is: to provide a communication device. The communication device includes an antenna and the above filter, and the filter filters the received and transmitted signals of the antenna.

[0016] The beneficial effects of the embodiments of the present application are as follows: Different from the prior art, the filter in the embodiments of the present application includes: a housing, a plurality of filter branches, and a plurality of first mounting holes. The housing has a first direction and a second direction, and the first direction is perpendicular to the second direction; the plurality of filter branches are arranged on the housing, and the plurality of filter branches are arranged along the second direction; the plurality of first mounting holes are used for mounting connectors, the first mounting holes are arranged in one-to-one correspondence with the filter branches, and the filter branches are connected to the corresponding first mounting holes through taps, wherein the lengths of each tap are equal. In this way, in the filter of the embodiments of the present application, the plurality of first mounting holes are arranged in one-to-one correspondence with the plurality of filter branches, and the connecting members between each filter branch and the corresponding connector, that is, the lengths of the taps are equal, which can avoid using taps of various types and sizes to meet the requirements of the consistency of each filter signal. Therefore, the structure of the filter can be simplified, the assembly process can be reduced, and the production cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of an embodiment of the filter of the present application;

[0019] Figure 2 is Figure 1 a schematic structural diagram of a part of the filter cavity in the embodiment of the filter;

[0020] Figure 3 is a schematic structural diagram of an embodiment of the filter of the present application;

[0021] Figure 4 is Figure 1 a schematic cross-sectional structural diagram of the first mounting hole, the groove, and the connector in the embodiment of the filter;

[0022] Figure 5 is Figure 1 a schematic structural diagram of the first mounting hole and the groove in the embodiment of the filter;

[0023] Figure 6 is Figure 1 a schematic structural diagram of a part of the structure in the embodiment of the filter;

[0024] Figure 7 is a schematic structural diagram of an embodiment of the filter of the present application;

[0025] Figure 8 is a schematic structural diagram of the connecting member in an embodiment of the filter of the present application;

[0026] Figure 9 It is a schematic structural diagram of an embodiment of the communication device of the present application. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0028] The terms "first" and "second" in the present application are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes unlisted steps or units, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0029] The present application first proposes a cavity filter, such as Figure 1 and Figure 2 shown, Figure 1 is a schematic structural diagram of an embodiment of the filter of the present application; Figure 2 is Figure 1 a schematic structural diagram of a part of the structure in the embodiment filter. The filter 30 of this embodiment includes: a housing 31, a multi-channel filtering branch 32 and a plurality of first mounting holes 143. The housing 31 has a first direction y and a second direction x; the multi-channel filtering branch 32 is arranged on the housing 31, and the multi-channel filtering branch 32 is arranged along the second direction x; the plurality of first mounting holes 143 are used for mounting the connector 50, the first mounting holes 143 are arranged in one-to-one correspondence with the filtering branches 32, and the filtering branches 32 are connected to the corresponding first mounting holes 143 through taps 33, wherein the lengths of each tap 33 are equal.

[0030] In the filter 30 of this embodiment, the plurality of first mounting holes 143 are arranged in one-to-one correspondence with the multi-channel filtering branches 32. An independent first mounting hole 143 and a tap 33 are provided for each multi-channel filtering branch 32, and each multi-channel filtering branch 32 is connected to the corresponding first mounting hole 143 through the tap 33 provided corresponding to it.

[0031] Different from the prior art, in the filter 30 of this embodiment, a plurality of first mounting holes 143 are arranged in one-to-one correspondence with multiple filter branches 32, and the lengths of the connectors, i.e., the taps 33, between each filter branch 32 and the corresponding connector 50 are equal, which can avoid using taps 33 of various types and sizes to meet the requirements of the consistency of each filter signal. Therefore, the structure of the filter 30 can be simplified, the assembly process can be reduced, and the production cost can be reduced.

[0032] Optionally, the cavity structures of each filter branch 32 in this embodiment are the same, that is, the number, size, coupling method, and arrangement method of the filter cavities 321 of each filter branch 32 are the same.

[0033] Each filter branch 32 in this embodiment is composed of N filter cavities 321 coupled in sequence, and the N filter cavities 321 are arranged in M columns along the second direction x.

[0034] Among them, N is 10, M is 2, the first filter cavity 321, the third filter cavity 321, the sixth filter cavity 321, the seventh filter cavity 321, and the tenth filter cavity 321 are arranged in the same column, and the second filter cavity 321, the fourth filter cavity 321, the fifth filter cavity 321, the eighth filter cavity 321, and the ninth filter cavity 321 are arranged in the same column.

[0035] Among them, the third filter cavity 321 is adjacent to the second filter cavity 321 and the fourth filter cavity 321, the sixth filter cavity 321 is adjacent to the fourth filter cavity 321 and the fifth filter cavity 321, the seventh filter cavity 321 is adjacent to the fifth filter cavity 321 and the eighth filter cavity 321, the tenth filter cavity 321 is adjacent to the eighth filter cavity 321 and the ninth filter cavity 321, and the first filter cavity 321 is connected to the tap 33.

[0036] Of course, in other embodiments, the filter branch may also include other numbers of filter cavities and other cavity arrangement methods and coupling methods.

[0037] Optionally, cross-coupling is respectively performed between the first filter cavity 321 and the third filter cavity 321, between the third filter cavity 321 and the sixth filter cavity 321, and between the seventh filter cavity 321 and the tenth filter cavity 321 in this embodiment to form three coupling zeros.

[0038] In other embodiments, cross-coupling can also be achieved between other two non-cascaded filter cavities to achieve coupling zeros at different frequency points.

[0039] Optionally, the plurality of first mounting holes 143 in this embodiment are arranged along the second direction x on a side wall (not labeled in the figure) of the housing 31.

[0040] Optionally, a second mounting hole 14 is further provided on the housing 31. A plurality of first mounting holes 143 and the second mounting hole 14 are arranged along the second direction x on the side wall, and two first mounting holes 143 form a group. The plurality of second mounting holes 14 are arranged at intervals with respect to the multiple groups of first mounting holes 143.

[0041] Optionally, the tap 33 includes a first tap 331 and a second tap 332. One of the adjacent two filter branches 32 is connected to one of the two adjacent first mounting holes 143 through the first tap 331, and the other of the adjacent two filter branches 32 is connected to the other of the two adjacent first mounting holes 143 through the second tap 332. Among them, the structures of the first tap 331 and the second tap 332 are symmetrically arranged.

[0042] In other embodiments, the connector can also be arranged in the same column as the first filter cavity of the corresponding filter branch, so that the first tap and the second tap are exactly the same.

[0043] Optionally, an input terminal (not labeled in the figure) and an output terminal (not labeled in the figure) are further provided on the housing 31. The input terminal is connected to the first filter cavity 321 through a connector 50, and the output terminal is connected to the tenth filter cavity 321 through another connector 50.

[0044] Among them, in this embodiment, the filter 30 is provided with 16 filter branches 32; the width dimension of the filter 30 is 124.2 mm; the types of taps 33 are 2; and the number of second mounting holes 14 is 9.

[0045] In other embodiments, the size and the number of components of the filter 30 can be adjusted according to the actual product requirements.

[0046] In another embodiment, as Figure 3 shown, this embodiment further includes a cover plate 20 on the basis of the above-mentioned filter 30. The cover plate 20 covers the housing 31, and the second mounting hole 14 is used to cooperate with a fastener to fix the housing 31 and the cover plate 20.

[0047] The cover plate 20 is provided with through holes corresponding to the first mounting holes 143 and the second mounting hole 14. The connector 50 is embedded in the through holes and the first mounting holes 143 to fix the connector 50 to the cover plate 20 and connect it to the filter branch 32. A screw (not shown in the figure) or a positioning pin (not shown in the figure) is inserted into the second mounting hole 14 through the through hole on the cover plate 20 to realize the fixation or positioning of the cover plate 20 and the housing 31.

[0048] Specifically, referring together to Figures 1 to 5The shell 31 forms a filter cavity 10, and the filter cavity 10 includes a side wall forming a filter cavity 110. The side wall is provided with an end surface 101 extending toward the resonance cavity. The end surface 101 is provided with a first mounting hole 143 and a groove 144 connected to the first mounting hole 143, wherein the side wall protrudes from the other parts of the end surface 101 toward the side away from the resonance cavity.

[0049] The first mounting hole 413 is used to mount the connector 50 . The connector 50 is mounted on the filter cavity 10 through the first mounting hole 143 . The connector 50 is connected to the resonant cavity (not shown) through the groove 144 .

[0050] Furthermore, the filter cavity 10 further includes an isolation rib (not shown) for isolating the filter cavity 110 into a plurality of resonant cavities. In other embodiments, the isolation rib is provided with an end surface extending toward the resonant cavity, and the first mounting hole and / or groove may be entirely or partially provided on the isolation rib.

[0051] In the present embodiment, there is no spacer between the first mounting hole 143 and the groove 144. When processing the first mounting hole 143, there is no need to use a T-shaped knife. The processing and assembly methods are simple, which can improve the processing and assembly efficiency of the cavity filter 30. At the same time, the side wall of the first mounting hole 143 for installing the connector 50 protrudes from the end face 101 of the side wall of the filter cavity 110, and the end face 101 forms an embedded connection with the connector 50, which can improve the sealing performance at the first mounting hole 143. And because the groove 144 connected to the first mounting hole 143 is formed on the end face, the top surface of the side wall of the groove 144 is flush with the end face 101, which can ensure that the cover plate 20 is stably covered on the filter cavity 10, which can further improve the sealing performance of the filter cavity 10.

[0052] Optionally, the inner surface of the first portion 145 of the side wall of the first mounting hole 143 is provided with a boss 147 along the circumferential direction of the first mounting hole 143, the connector 50 includes a conductor 51 and an insulating body 52 wrapping the conductor 51, the outer surface of the insulating body 52 is provided with a first protrusion 521, the boss 147 is connected to the first protrusion 521, one end of the conductor 51 extends into the first mounting hole 143 and is located at the same height as the groove 144, so that the signal line is connected to the conductor 51 along the groove 144. The bottom of the mounting hole is flush with the bottom of the groove, wherein the first portion 145 of the side wall of the first mounting hole 143 protrudes from the other parts of the end surface 101.

[0053] Of course, in other embodiments, it is not limited whether one end of the conductor is located at the same height as the groove.

[0054] Optionally, the connector 50 also includes a shielding body 53, which is sleeved on the outside of the insulating body 52. ​​A first gap (not marked in the figure) is provided between one end of the shielding body 53 close to the first part 145 of the side wall of the first mounting hole 143 and the insulating body 52. ​​The connector 50 is installed in the first mounting hole 143, the first part 145 of the side wall of the first mounting hole 143 is embedded in the first gap, and the shielding body 53 is sleeved outside the first part 145 of the side wall of the first mounting hole 143 to close the first part 145.

[0055] Optionally, the cover plate 20 is covered on a side of the filter cavity 10 where the first mounting hole 143 is provided. A through hole (not shown) is provided on the cover plate 20 , and the connector 50 is embedded in the through hole and the first mounting hole 143 .

[0056] A waterproof layer 120 is further disposed between the cover plate 20 and the filter cavity 10 .

[0057] Optionally, a second protrusion 531 is provided on the outer surface of the shielding body 53, and a second gap (not marked in the figure) is provided between the through hole and the first portion 145 of the side wall of the first mounting hole 143. The connector 50 is installed in the first mounting hole 143 and the through hole, and one end of the shielding body 53 close to the first portion 145 of the side wall of the first mounting hole 143 is embedded in the second gap, and the cover plate receives the second protrusion 531.

[0058] Optionally, the cavity filter 30 further includes a signal line (not shown), one end of which is connected to the conductor 51 , and the other end of which extends into the resonant cavity through the groove 144 .

[0059] Optionally, the bottom of the first mounting hole 143 is flush with the bottom of the groove 144 , which can simplify the processing technology of the cavity filter 30 and improve the processing efficiency of the cavity filter 30 .

[0060] The other structures of the filter cavity 10 are not described in detail here.

[0061] Optionally, see also Figure 1 , Figure 2 and Figure 6 The filter cavity 10 of this embodiment further includes a mounting portion 130 integrally provided with the side wall, the mounting portion 130 is provided with a third mounting hole 140 , and the end surface of the third mounting hole 140 , the top surface of the side wall and the top surface of the mounting portion 130 are flush.

[0062] In this way, the end face of the third mounting hole 140 of the mounting portion 130 of this embodiment, the top surface of the side wall and the top surface of the mounting portion 130 are located on the same horizontal plane, and the mounting surface of the cover plate 20 can be processed by a large knife, which can reduce the CNC processing time and improve the processing efficiency of the filter cavity 10.

[0063] Among them, the third mounting hole 140 is a through hole.

[0064] Optionally, the mounting portion 130 is located on the outer periphery of the side wall, which can ensure that the mounting portion 130 does not occupy the space of the first filtering cavity 110 and can also ensure the stable installation of the filtering cavity body 10.

[0065] To accommodate mounting parts such as screws or positioning pins used in cooperation with the mounting portion 130 and reduce the thickness of the filtering cavity body 10, the dimension of the mounting portion 130 in the depth direction of the first filtering cavity 110 is smaller than the dimension of the side wall in the depth direction.

[0066] Optionally, the third mounting hole 140 includes a screw hole 141 for setting a screw (not shown in the figure), and the mounting surface of the screw is flush with the top surface of the mounting portion 130.

[0067] During installation, the screw is inserted into the screw hole 141 from the top surface of the mounting portion 130 to fix the mounting part to the filtering cavity body 10.

[0068] Optionally, the third mounting hole 140 further includes a positioning hole 142 for setting a positioning pin (not shown in the figure), and the through hole surface of the positioning pin is flush with the top surface of the mounting portion 130.

[0069] During installation, the positioning pin is inserted into the positioning hole 142 from the top surface of the mounting portion 130 to position the mounting part to the filtering cavity body 10.

[0070] Among them, the dimension of the screw hole 141 in the depth direction of the filtering cavity 110 is smaller than the dimension of the positioning hole 142 in the depth direction, that is, the thickness of the mounting portion 130 for installing the screw is smaller than the thickness of the mounting portion 130 for installing the positioning pin.

[0071] In other embodiments, the thickness of the mounting portion can be set according to actual needs.

[0072] Optionally, the waterproof layer 120 is provided between the side wall of the filtering cavity body 10 and the cover plate, and a recessed portion 410 is provided on the outer periphery of the waterproof layer 120, and the recessed portion 410 is correspondingly arranged with the mounting portion 130.

[0073] Another embodiment of the filter proposed in this application is as Figure 7As shown in the figure, the filter 30 of this embodiment includes: a housing 31, a multi-channel filtering branch 32, a plurality of first mounting holes 143, and an adjusting member 34. The housing 31 has a first direction y and a second direction x. The multi-channel filtering branch 32 is disposed on the housing 31, and the multi-channel filtering branch 32 is arranged along the second direction x. The plurality of first mounting holes 143 are used to mount the connector 50. The first mounting holes 143 are arranged in one-to-one correspondence with the filtering branches 32, and the filtering branches 32 are connected to the corresponding first mounting holes 143 through the connecting members 33. Among them, the lengths of each connecting member 33 are equal. The adjusting member 34 is arranged corresponding to the connecting member 33.

[0074] The adjusting member 34 of this embodiment is used to adjust the time delay value of the connecting member 33.

[0075] In this embodiment, by correspondingly arranging the adjusting member 34 for the connecting member 33 and adjusting the time delay value of the connecting member 33 through the adjusting member 34, the signal consistency between each filtering branch 32 can be improved.

[0076] Optionally, the adjusting member 34 is an adjusting screw. A threaded hole (not shown in the figure) is provided on the cover plate (not shown in the figure). The adjusting screw is arranged on the cover plate through the threaded hole. One end of the adjusting screw passes through the threaded hole and extends into the housing 31 to adjust the depth of the adjusting screw inside the housing 31.

[0077] Optionally, the connecting member 33 of this embodiment can be a tap.

[0078] Specifically, the tap of this embodiment adopts a tap wire. One end of the tap wire is connected to a resonator (not shown in the figure) in the filtering cavity 321, and the other end of the tap wire is connected to the corresponding connector 50. The adjusting screw is arranged on the side of the tap wire.

[0079] In another embodiment, the tap can also adopt a tap element 61 (as Figure 8 shown). The tap element 61 forms an accommodating space (not marked in the figure) for accommodating the adjusting screw 62. A loading capacitor is formed between the adjusting screw 62 and the tap element 61. By adjusting the inserted depth of the adjusting screw 62, the capacitance value is changed, thereby changing the time delay value of the tap element 61.

[0080] The other structures and working principles of the filter 30 in this embodiment are similar to those in the above embodiments and will not be elaborated here.

[0081] This application further proposes a communication device. As Figure 9 shown, the communication device 90 of this embodiment includes an antenna 92 and a filter 91. The filter 91 filters the received and transmitted signals of the antenna 92.

[0082] The filter 91 in this embodiment is similar to the filter in the above embodiment and will not be elaborated here.

[0083] Different from the prior art, the filter according to the embodiment of the present application includes: a housing, a plurality of filter branches, and a plurality of first mounting holes. The housing has a first direction and a second direction; the plurality of filter branches are arranged on the housing, and the plurality of filter branches are arranged along the second direction; the plurality of first mounting holes are used for mounting connectors, and the first mounting holes are arranged in one-to-one correspondence with the filter branches, and the filter branches are connected to the corresponding first mounting holes through taps, wherein the lengths of each tap are equal. In this way, in the filter according to the embodiment of the present application, the plurality of first mounting holes are arranged in one-to-one correspondence with the plurality of filter branches, and the connecting members between each filter branch and the corresponding connector, that is, the lengths of the taps are equal, which can avoid using various types and sizes of taps to meet the requirements of the consistency of each filtered signal. Therefore, the structure of the filter can be simplified, the assembly process can be reduced, and the production cost can be reduced.

[0084] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A filter, characterized in that, The filter includes: a housing having a first direction and a second direction perpendicular to each other; a multi-channel filter branch disposed on the housing and arranged along the second direction; a plurality of first mounting holes for mounting connectors, the first mounting holes being provided in one-to-one correspondence with the filter branches, and the filter branches being connected to the corresponding first mounting holes through taps, wherein the lengths of each of the taps are equal; wherein the housing forms a filter cavity, the filter cavity including a filter chamber and side walls forming the filter chamber, the end surfaces of the side walls being provided with the first mounting holes and grooves communicating with the first mounting holes; a first portion of the inner surface of the side wall of the first mounting hole is provided with a boss along the circumferential direction of the first mounting hole, the connector including a conductor and an insulating body wrapping the conductor, the outer surface of the insulating body being provided with a first protrusion, the boss receiving the first protrusion, one end of the conductor extending into the first mounting hole and being at the same height as the groove, wherein the first portion protrudes from other portions of the end surface; the connector further includes a shielding body sleeved outside the insulating body, a first gap being provided between one end of the shielding body close to the first portion and the insulating body, mounting the connector in the first mounting hole, the first portion being embedded in the first gap, and the shielding body being sleeved outside the first portion to enclose the first portion.

2. The filter according to claim 1, characterized in that The cavity structure of each filter branch is the same.

3. The filter according to claim 2, characterized in that, The filter further includes a cover plate, and the housing is further provided with second mounting holes for cooperating with fasteners to fix the housing and the cover plate.

4. The filter according to claim 3, characterized in that, The plurality of first mounting holes and the second mounting holes are both arranged on the side wall of the housing along the second direction, and two adjacent first mounting holes form a group, and the plurality of second mounting holes are arranged at intervals with respect to the plurality of groups of first mounting holes.

5. The filter according to claim 1, characterized in that, The tap includes a first tap and a second tap, one of two adjacent filter branches being connected to one of two adjacent first mounting holes through the first tap, and the other of the two adjacent filter branches being connected to the other of the two adjacent first mounting holes through the second tap; wherein the first tap and the second tap are symmetrically arranged.

6. The filter according to claim 1, wherein The filter branch is composed of N sequentially coupled filter chambers, and the N filter chambers are arranged in M columns along the second direction.

7. The filter according to claim 6, characterized in that, N is 10, M is 2, the first filter chamber, the third filter chamber, the sixth filter chamber, the seventh filter chamber and the tenth filter chamber are arranged in the same column, and the second filter chamber, the fourth filter chamber, the fifth filter chamber, the eighth filter chamber and the ninth filter chamber are arranged in the same column; Among them, the third filtering cavity is adjacent to the second filtering cavity and the fourth filtering cavity, the sixth filtering cavity is adjacent to the fourth filtering cavity and the fifth filtering cavity, the seventh filtering cavity is adjacent to the fifth filtering cavity and the eighth filtering cavity, the tenth filtering cavity is adjacent to the eighth filtering cavity and the ninth filtering cavity, and the first filtering cavity is connected to the tap.

8. The filter according to claim 7, wherein There are cross-couplings respectively between the first filtering cavity and the third filtering cavity, between the third filtering cavity and the sixth filtering cavity, and between the seventh filtering cavity and the tenth filtering cavity to form three coupling zeros.

9. The filter according to claim 7, wherein An input terminal and an output terminal are further arranged on the housing. The input terminal is connected to the first filtering cavity through one of the connectors, and the output terminal is connected to the tenth filtering cavity through the other connector.

10. A communication device, characterized in that, The communication device includes an antenna and the filter according to any one of claims 1 to 9, and the filter filters the transceiver signals of the antenna.

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