CN211507848U - Filter and communication device - Google Patents

Abstract

The application discloses a filter and a communication device. The filter includes: the shell is provided with a first direction and a second direction; the multi-path filtering branches are arranged on the shell and are distributed along the second direction; the first mounting holes are used for mounting connectors, the first mounting holes and the filtering branches are arranged in a one-to-one correspondence mode, the filtering branches are connected to the corresponding first mounting holes through connecting pieces, and the length of each connecting piece is equal; and the adjusting piece is coupled with the connecting piece and used for adjusting the time delay value of the connecting piece. In this way, the signal consistency of the multipath filtering branches can be improved.

Description

Filter and communication device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a filter and a communications apparatus.

Background

In a base station system for mobile communication, a transmitting antenna transmits a communication signal carrying communication data in a specific frequency range, and a receiving antenna receives the communication signal.

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

The inventor of the present application finds, in long-term research and development work, that a large difference exists in the shape, size and the like of a tap corresponding to each filtering branch in an existing filter, so that the difference of the delay values of the taps is large, and the consistency of signals among the filtering branches is poor.

SUMMERY OF THE UTILITY MODEL

The application provides a filter and a communication device, which are used for simplifying the structure and reducing the production cost.

In order to solve the technical problem, the application adopts a technical scheme that: a filter is provided. The filter includes: the shell is provided with a first direction and a second direction; the multi-path filtering branches are arranged on the shell and are distributed along the second direction; the first mounting holes are used for mounting connectors, the first mounting holes and the filtering branches are arranged in a one-to-one correspondence mode, the filtering branches are connected to the corresponding first mounting holes through connecting pieces, and the length of each connecting piece is equal; and the adjusting piece is coupled with the connecting piece and used for adjusting the time delay value of the connecting piece.

Wherein, the regulating part is adjusting screw, and the wave filter still includes the apron, and the lid is established on the casing, is provided with the screw hole on the apron, and adjusting screw passes through the screw hole and sets up on the apron, and adjusting screw's one end passes the screw hole and extends to in the casing to adjusting screw's the degree of depth in the casing.

The connecting piece is a tapped line, the filtering branch line is composed of N filtering cavities which are sequentially coupled, one end of the tapped line is connected with a resonator in each filtering cavity, the other end of the tapped line is connected with a corresponding connector, and the adjusting screw rod is arranged on the side edge of the tapped line.

The connecting piece is a tap element, an accommodating space for accommodating the adjusting screw rod is formed in the tap element, and a loading capacitor is formed between the adjusting screw rod and the tap element.

The cavity structure of each filtering branch is the same, and the first mounting holes are arranged on one side wall of the shell along the second direction.

The shell is further provided with second mounting holes, the second mounting holes are arranged on the side wall of the shell along the second direction, the two first mounting holes are in one group, and the second mounting holes and the multiple groups of first mounting holes are arranged at intervals.

The connecting piece comprises a first connecting piece and a second connecting piece, one of the two adjacent filtering branches is connected to one of the two adjacent first mounting holes through the first connecting piece, and the other of the two adjacent filtering branches is connected to the other of the two adjacent first mounting holes through the second connecting piece; the first connecting piece and the second connecting piece are symmetrically arranged.

The N is 10, the N filtering cavities are arranged in two rows along the first direction, wherein the first filtering cavity, the third filtering cavity, the sixth filtering cavity, the seventh filtering cavity and the tenth filtering cavity are arranged in the same row, and the second filtering cavity, the fourth filtering cavity, the fifth filtering cavity, the eighth filtering cavity and the ninth filtering cavity are arranged in the same row; 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 with the connecting piece.

And the first filtering cavity and the third filtering cavity, the third filtering cavity and the sixth filtering cavity, and the seventh filtering cavity and the tenth filtering cavity are respectively in cross coupling to form three coupling zeros.

In order to solve the technical problem, the application adopts a technical scheme that: a communication apparatus is provided. The communication device comprises an antenna and the filter, wherein the filter carries out filtering processing on the transmitting and receiving signals of the antenna.

The beneficial effects of the embodiment of the application are that: different from the prior art, the filter of the embodiment of the application comprises: the shell is provided with a first direction and a second direction; the multi-path filtering branches are arranged on the shell and are distributed along the second direction; the first mounting holes are used for mounting connectors, the first mounting holes and the filtering branches are arranged in a one-to-one correspondence mode, the filtering branches are connected to the corresponding first mounting holes through connecting pieces, and the length of each connecting piece is equal; and the adjusting piece is coupled with the connecting piece and used for adjusting the time delay value of the connecting piece. In this way, the plurality of first mounting holes in the filter of the embodiment of the application are arranged in one-to-one correspondence with the plurality of filter branches, and the lengths of the connecting pieces between each filter branch and the corresponding connector are equal, so that the adoption of connecting pieces of various types and sizes can be avoided, and the requirement on the consistency of each filter signal can be met, therefore, the structure of the filter can be simplified, the assembly process can be reduced, and the production cost can be reduced; meanwhile, the adjusting pieces are correspondingly arranged on the connecting pieces, and the time delay values of the connecting pieces are adjusted through the adjusting pieces, so that the consistency of signals among filtering branches can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of an embodiment of a filter according to the present application;

FIG. 2 is a schematic diagram of a portion of a filter cavity in the filter of FIG. 1;

FIG. 3 is a schematic diagram of an embodiment of a filter according to the present application;

fig. 4 is a schematic cross-sectional view of a first mounting hole, a groove and a connector in the filter of fig. 1;

FIG. 5 is a schematic diagram of a first mounting hole and a recess in the filter of FIG. 1;

FIG. 6 is a schematic diagram of a structure of a portion of the filter of FIG. 1;

FIG. 7 is a schematic diagram of an embodiment of a filter according to the present application;

FIG. 8 is a schematic diagram of a connector according to an embodiment of the filter of the present application;

fig. 9 is a schematic structural diagram of an embodiment of a communication device according to the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first" and "second" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

The present application first provides a cavity filter, as shown in fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an embodiment of the filter of the present application; fig. 2 is a schematic structural diagram of a part of a filtering cavity in the filter of fig. 1. The filter 30 of the present embodiment includes: the filter comprises a shell 31, a multi-path filtering branch 32 and a plurality of first mounting holes 143, wherein the shell 31 has a first direction y and a second direction x; the multipath filter branches 32 are arranged on the shell 31, and the multipath filter branches 32 are 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 disposed in one-to-one correspondence with the filter branches 32, and the filter branches 32 are connected to the corresponding first mounting holes 143 through taps 33, wherein the length of each tap 33 is equal.

In the filter 30 of the present embodiment, the plurality of first mounting holes 143 are disposed in one-to-one correspondence with the multiple filter branches 32, each filter branch 32 is provided with an independent first mounting hole 143 and a tap 33, and each filter branch 32 is connected to the corresponding first mounting hole 143 through the tap 33 disposed in correspondence with the filter branch.

Different from the prior art, in the filter 30 of the present embodiment, the plurality of first mounting holes 143 are disposed in one-to-one correspondence with the plurality of filter branches 32, and the length of the connection member between each filter branch 32 and the corresponding connector 50, that is, the taps 33, is equal, so that the taps 33 of various types and sizes can be avoided to meet the requirement of consistency of each filter signal, and therefore, the structure of the filter 30 can be simplified, the assembly process can be reduced, and the production cost can be reduced.

Optionally, the cavity array structure of each filtering branch 32 in this embodiment is the same, that is, the number, size, coupling manner and arrangement manner of the filtering cavities 321 of each filtering branch 32 are the same.

Each of the filtering branches 32 of the present embodiment is composed of N filtering cavities 321 coupled in sequence, and the N filtering cavities 321 are arranged in M rows along the second direction x.

Wherein, N is 10, M is 2, the first filtering cavity 321, the third filtering cavity 321, the sixth filtering cavity 321, the seventh filtering cavity 321 and the tenth filtering cavity 321 are arranged in the same row, and the second filtering cavity 321, the fourth filtering cavity 321, the fifth filtering cavity 321, the eighth filtering cavity 321 and the ninth filtering cavity 321 are arranged in the same row.

The third filtering cavity 321 is adjacent to the second filtering cavity 321 and the fourth filtering cavity 321, the sixth filtering cavity 321 is adjacent to the fourth filtering cavity 321 and the fifth filtering cavity 321, the seventh filtering cavity 321 is adjacent to the fifth filtering cavity 321 and the eighth filtering cavity 321, the tenth filtering cavity 321 is adjacent to the eighth filtering cavity 321 and the ninth filtering cavity 321, and the first filtering cavity 321 is connected to the tap 33.

Of course, in other embodiments, the filter branch may further include other numbers of filter cavities and other cavity arrangement modes and coupling modes.

Optionally, in the present embodiment, the first filtering cavity 321 and the third filtering cavity 321, the third filtering cavity 321 and the sixth filtering cavity 321, and the seventh filtering cavity 321 and the tenth filtering cavity 321 are respectively cross-coupled to form three coupling zeros.

In other embodiments, cross coupling can be realized between two filter cavities which are not cascaded, so as to realize coupling zeros of different frequency points.

Alternatively, the plurality of first mounting holes 143 of the present embodiment are arranged along the second direction x on a side wall (not shown) of the housing 31.

Optionally, the housing 31 is further provided with a second mounting hole 14, the plurality of first mounting holes 143 and the second mounting hole 14 are arranged on the sidewall along the second direction x, two adjacent first mounting holes 143 form a group, and the plurality of second mounting holes 14 and the plurality of groups of first mounting holes 143 are arranged at intervals.

Optionally, the taps 33 include a first tap 331 and a second tap 332, one of the two adjacent 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 two adjacent filter branches 32 is connected to the other of the two adjacent first mounting holes 143 through the second tap 332; the first tap 331 and the second tap 332 are symmetrically disposed.

In other embodiments, the connector may be arranged in the same column as the first filter cavity of the corresponding filter branch, so that the first tap is identical to the second tap.

Optionally, the housing 31 is further provided with an input terminal (not shown) and an output terminal (not shown), the input terminal is connected to the first filter cavity 321 through one connector 50, and the output terminal is connected to the tenth filter cavity 321 through another connector 50.

The filter 30 of the present embodiment is provided with 16 filtering branches 32; the width dimension of the filter 30 is 124.2 mm; the types of the taps 33 are 2; the number of the second mounting holes 14 is 9.

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

In another embodiment, as shown in fig. 3, the present embodiment further includes a cover plate 20 on the filter 30, the cover plate 20 covers the housing 31, and the second mounting hole 14 is used for cooperating with a fastener to fix the housing 31 and the cover plate 20.

The cover plate 20 is provided with through holes corresponding to the first mounting hole 143 and the second mounting hole 14, the connector 50 is inserted into the through holes and the first mounting hole 143 to fix the connector 50 with the cover plate 20 and connect with the filter branch 32, and screws (not shown) or positioning pins (not shown) are inserted into the second mounting hole 14 through the through holes on the cover plate 20 to fix or position the cover plate 20 with the housing 31.

Specifically, referring to fig. 1 to 5, the housing 31 forms a filter cavity 10, the filter cavity 10 includes a side wall forming the filter cavity 110, the side wall is provided with an end surface 101 extending toward the resonant cavity, the end surface 101 is provided with a first mounting hole 143 and a groove 144 communicating with the first mounting hole 143, wherein the side wall protrudes from other portions of the end surface 101 toward a side away from the resonant cavity.

The first mounting hole 413 is used for mounting the connector 50, the connector 50 is mounted on the filter chamber 10 through the first mounting hole 143, and the connector 50 is communicated with the resonant cavity (not shown) through the groove 144.

Further, the filter cavity 10 further includes isolation ribs (not shown) for isolating the filter cavity 110 into a plurality of resonant cavities. In other embodiments, the spacer rib is provided with an end surface extending towards the cavity, and the first mounting hole and/or the groove may be provided wholly or partly in the spacer rib.

In the embodiment, no spacer is arranged between the first mounting hole 143 and the groove 144, and when the first mounting hole 143 is machined, a T-shaped cutter is not needed, so that the machining and assembling manner is simple, and the machining and assembling efficiency of the cavity filter 30 can be improved; meanwhile, the side wall of the first mounting hole 143 for mounting the connector 50 protrudes out of the end face 101 of the side wall of the filter cavity 110, and the end face 101 and the connector 50 form embedded connection, so that the sealing performance at the first mounting hole 143 can be improved; and because the groove 144 communicated with the first mounting hole 143 is formed on the end surface, the top surface of the side wall of the groove 144 is flush with the end surface 101, so that the cover plate 20 can be stably covered on the filter cavity 10, and the sealing performance of the filter cavity 10 can be further improved.

Optionally, the inner surface of the first portion 145 of the sidewall 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 received in 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 as to facilitate the connection of the signal line with the conductor 51 along the groove 144. The bottom of the mounting hole is flush with the bottom of the recess, wherein the first portion 145 of the side wall of the first mounting hole 143 protrudes beyond the other portion of the end face 101.

Of course, in other embodiments, it may not be limited whether one end of the electrical conductor is at the same height as the groove.

Optionally, the connector 50 further includes a shielding body 53, the shielding body 53 is disposed outside the insulating body 52, a first gap (not shown) is disposed between one end of the shielding body 53 close to the first portion 145 of the sidewall of the first mounting hole 143 and the insulating body 52, the connector 50 is mounted in the first mounting hole 143, the first portion 145 of the sidewall of the first mounting hole 143 is embedded in the first gap, and the shielding body 53 is disposed outside the first portion 145 of the sidewall of the first mounting hole 143 to close the first portion 145.

Optionally, the cover plate 20 covers the side of the filter cavity 10 where the first mounting hole 143 is disposed, a through hole (not shown) is disposed on the cover plate 20, and the connector 50 is embedded in the through hole and the first mounting hole 143.

Wherein, a waterproof layer 120 is further disposed between the cover plate 20 and the filtering cavity 10.

Optionally, the outer surface of the shielding body 53 is provided with a second protrusion 531, a second gap (not shown) is provided between the through hole and the first portion 145 of the sidewall of the first mounting hole 143, the connector 50 is mounted in the first mounting hole 143 and the through hole, one end of the shielding body 53 close to the first portion 145 of the sidewall of the first mounting hole 143 is embedded in the second gap, and the cover plate receives the second protrusion 531.

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

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

Further details regarding the other structure of the filter cavity 10 are not provided herein.

Optionally, refer to fig. 1, 2 and 6 together. The filtering cavity 10 of this embodiment further includes an installation portion 130 integrally disposed with the side wall, the installation portion 130 is provided with a third installation hole 140, and an end surface of the third installation hole 140, a top surface of the side wall, and a top surface of the installation portion 130 are flush.

In this way, the end surface of the third mounting hole 140, the top surface of the sidewall of the mounting portion 130 and the top surface of the mounting portion 130 of the present embodiment are located at the same horizontal plane, so that the mounting surface of the cover plate 20 can be machined by a large cutter, thereby reducing the machining time of the CNC and improving the machining efficiency of the filter cavity 10.

The third mounting hole 140 is a through hole.

Optionally, the mounting portion 130 is located at the periphery of the side wall, so that the mounting portion 130 does not occupy the space of the first filtering cavity 110, and the stable mounting of the filtering cavity 10 can be ensured.

In order to accommodate mounting members such as screws or positioning pins used in cooperation with the mounting portion 130 to reduce the thickness of the filter chamber 10, the mounting portion 130 has a dimension in the depth direction of the first filter chamber 110 smaller than that of the side wall in the depth direction.

Optionally, the third mounting hole 140 includes a screw hole 141, and the screw hole 141 is used for disposing a screw (not shown), and a mounting surface of the screw is flush with the top surface of the mounting portion 130.

When mounting, screws are inserted into the screw holes 141 from the top surface of the mounting portion 130 to fix the mounting member to the filter chamber 10.

Optionally, the third mounting hole 140 further includes a positioning hole 142, and the positioning hole 142 is used for disposing a positioning pin (not shown), and a through hole surface of the positioning pin is flush with the top surface of the mounting portion 130.

During installation, the positioning pins are inserted into the positioning holes 142 from the top surface of the installation part 130, so as to realize positioning of the installation part and the filter cavity 10.

The size of the screw hole 141 along the depth direction of the filter cavity 110 is smaller than the size of the positioning hole 142 along the depth direction, that is, the thickness of the mounting portion 130 for mounting a screw is smaller than the thickness of the mounting portion 130 for mounting a positioning pin.

In other embodiments, the thickness of the mounting portion may be set as desired.

Optionally, the waterproof layer 120 is disposed between the side wall of the filter cavity 10 and the cover plate, a recess 410 is disposed on the outer periphery of the waterproof layer 120, and the recess 410 is disposed corresponding to the mounting portion 130.

The present application proposes a filter of another embodiment, and as shown in fig. 7, a filter 30 of the present embodiment includes: the filter comprises a shell 31, a multi-path filtering branch 32, a plurality of first mounting holes 143 and a regulating member 34, wherein the shell 31 has a first direction y and a second direction x; the multipath filter branches 32 are arranged on the shell 31, and the multipath filter branches 32 are arranged along the second direction x; the plurality of first mounting holes 143 are used for mounting the connectors 50, the first mounting holes 143 are arranged in one-to-one correspondence with the filter branches 32, and the filter branches 32 are connected to the corresponding first mounting holes 143 through the connecting members 33, wherein the length of each connecting member 33 is equal; the adjusting member 34 is provided corresponding to the connecting member 33.

The adjusting member 34 of the present embodiment is used to adjust the time delay value of the connecting member 33.

In this embodiment, the adjusting element 34 is correspondingly disposed on the connecting element 33, and the time delay value of the connecting element 33 is adjusted by the adjusting element 34, so that the signal consistency between each filtering branch 32 can be improved.

Alternatively, the adjusting member 34 is an adjusting screw, a cover plate (not shown) is provided with a threaded hole (not shown), the adjusting screw is disposed on the cover plate through the threaded hole, and one end of the adjusting screw extends into the housing 31 through the threaded hole to adjust the depth of the adjusting screw in the housing 31.

Alternatively, the connector 33 of the present embodiment may be a tap.

Specifically, the tap of the present embodiment uses a tap line, one end of the tap line is connected to a resonator (not shown) in the filter cavity 321, the other end of the tap line is connected to the corresponding connector 50, and the adjusting screw is disposed at the side of the tap line.

In another embodiment, a tap element 61 (as shown in fig. 8) may also be used for the tap, the tap element 61 is formed with an accommodating space (not shown) for accommodating the adjusting screw 62, a loading capacitor is formed between the adjusting screw 62 and the tap element 61, and the capacitance value is changed by adjusting the insertion depth of the adjusting screw 62, so as to change the time delay value of the tap element 61.

Other structures and operation principles of the filter 30 of this embodiment are similar to those of the above embodiments, and are not described herein again.

The present application further proposes a communication device, as shown in fig. 9, a communication device 90 of the present embodiment includes an antenna 92 and a filter 91, and the filter 91 performs filtering processing on a transmission/reception signal of the antenna 92.

The filter 91 of this embodiment is similar to the filter of the previous embodiment, and is not described herein again.

Different from the prior art, the filter of the embodiment of the application comprises: the shell is provided with a first direction and a second direction; the multi-path filtering branches are arranged on the shell and are distributed along the second direction; the first mounting holes are used for mounting connectors, the first mounting holes and the filtering branches are arranged in a one-to-one correspondence mode, the filtering branches are connected to the corresponding first mounting holes through connecting pieces, and the length of each connecting piece is equal; and the adjusting piece is coupled with the connecting piece and used for adjusting the time delay value of the connecting piece. In this way, the plurality of first mounting holes in the filter of the embodiment of the application are arranged in one-to-one correspondence with the plurality of filter branches, and the lengths of the connecting pieces between each filter branch and the corresponding connector are equal, so that the adoption of connecting pieces of various types and sizes can be avoided, and the requirement on the consistency of each filter signal can be met, therefore, the structure of the filter can be simplified, the assembly process can be reduced, and the production cost can be reduced; meanwhile, the adjusting pieces are correspondingly arranged on the connecting pieces, and the time delay values of the connecting pieces are adjusted through the adjusting pieces, so that the consistency of signals among filtering branches can be improved.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (10)

1. A filter, characterized in that the filter comprises:

a housing having a first direction and a second direction, the first direction being perpendicular to the second direction;

the multi-path filtering branches are arranged on the shell and are distributed along the second direction;

the first mounting holes are used for mounting connectors, the first mounting holes and the filtering branches are arranged in a one-to-one correspondence mode, the filtering branches are connected to the corresponding first mounting holes through connecting pieces, and the length of each connecting piece is equal;

and the adjusting piece is coupled with the connecting piece and used for adjusting the time delay value of the connecting piece.

2. The filter according to claim 1, wherein the adjusting member is an adjusting screw, the filter further comprises a cover plate, the cover plate is disposed on the housing, a threaded hole is disposed on the cover plate, the adjusting screw is disposed on the cover plate through the threaded hole, and one end of the adjusting screw extends into the housing through the threaded hole to adjust a depth of the adjusting screw in the housing.

3. The filter according to claim 2, wherein the connecting member is a tapped line, the filter branch is composed of N filter cavities coupled in sequence, one end of the tapped line is connected to the resonator in the filter cavity, the other end of the tapped line is connected to the corresponding connector, and the adjusting screw is disposed at a side of the tapped line.

4. The filter of claim 2, wherein the connector is a tap element, the tap element is formed with a receiving space for receiving the adjusting screw, and a loading capacitor is formed between the adjusting screw and the tap element.

5. The filter of claim 1, wherein the cavity arrangement of each of the filter branches is the same, and the first mounting holes are arranged along the second direction on a sidewall of the housing.

6. The filter according to claim 2, wherein the housing is further provided with second mounting holes, the second mounting holes are arranged on a side wall of the housing along the second direction, two first mounting holes are in one group, and the second mounting holes are spaced from the plurality of groups of first mounting holes.

7. The filter according to claim 3, wherein the connecting member comprises a first connecting member and a second connecting member, one of the two adjacent filtering branches is connected to one of the two adjacent first mounting holes through the first connecting member, and the other of the two adjacent filtering branches is connected to the other of the two adjacent first mounting holes through the second connecting member;

the first connecting piece and the second connecting piece are symmetrically arranged.

8. The filter according to claim 3, wherein N is 10, and the N filter cavities are arranged in two rows along the first direction, wherein a first filter cavity, a third filter cavity, a sixth filter cavity, a seventh filter cavity and a tenth filter cavity are arranged in the same row, and a second filter cavity, a fourth filter cavity, a fifth filter cavity, an eighth filter cavity and a ninth filter cavity are arranged in the same row;

wherein, the third filter chamber and second filter chamber and fourth the adjacent setting of filter chamber, the sixth filter chamber and fourth filter chamber and fifth the adjacent setting of filter chamber, the seventh filter chamber and fifth filter chamber and eighth the adjacent setting of filter chamber, the tenth filter chamber and eighth filter chamber and ninth the adjacent setting of filter chamber, first the filter chamber with the connecting piece is connected.

9. The filter of claim 8, wherein the first and third, third and sixth, and seventh and tenth filter cavities are cross-coupled to form three coupling zeros, respectively.

10. A communication apparatus comprising an antenna and the filter according to any one of claims 1 to 9, wherein the filter performs filtering processing on a transmission/reception signal of the antenna.

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