CN219371328U - Filter and communication device - Google Patents

Abstract

The application relates to the field of radio frequency devices, and provides a filter and communication equipment. The filter comprises resonant rod assemblies arranged in a row, and a signal transmission end which is coupled with the resonant rod assemblies and is used for inputting or outputting signals, wherein the signal transmission end is provided with an inner conductor, the resonant rod assemblies are provided with integrally formed tap structures, and the tap structures extend towards the inner conductor and are coupled with the inner conductor. Based on the structure, the assembly procedure between the tapping structure and the internal structure of the resonant rod assembly can be omitted on the basis of being convenient for realizing the coupling connection between the signal transmission end and the resonant rod assembly, the reliability and stability of the coupling connection between the tapping structure and the internal structure of the resonant rod assembly are improved, the risk that the tapping structure falls off from the resonant rod assembly is reduced, and therefore the assembly convenience and the assembly consistency of the tapping structure can be guaranteed and improved, and the consistency of filter indexes can be guaranteed and improved.

Description

Filter and communication device

Technical Field

The application belongs to the technical field of radio frequency devices, and particularly relates to a filter and communication equipment.

Background

Existing filters typically include resonant rods disposed within the filter and a signal transmission end for inputting or outputting a signal, the signal transmission end being coupled to one of the resonant rods. Specifically, a tap extending towards the signal transmission end is welded on the resonant rod, and the tap is welded with the signal transmission end, so that the resonant rod and the signal transmission end are in coupling connection. However, in this way, the fitting convenience and fitting uniformity of the taps may be poor, resulting in poor uniformity of the filter index.

Disclosure of Invention

An object of the embodiment of the present application is to provide a filter, so as to solve the problem that in the existing filter, the tap assembly convenience and the tap assembly consistency are poor, resulting in poor consistency of filter indexes.

In order to achieve the above purpose, the technical scheme adopted in the embodiment of the application is as follows: the utility model provides a wave filter, includes the resonant rod subassembly that sets up in a row, and with resonant rod subassembly coupling is connected and is used for the signal transmission end of input or output signal, signal transmission end is equipped with the inner conductor, resonant rod subassembly is equipped with integrated into one piece's structure of taking a percentage, take a percentage the structure towards the inner conductor extends the setting, and with inner conductor coupling connects.

In some embodiments, the resonant rod assembly comprises at least one resonant rod, at least one of the resonant rods being provided with the tap structure.

In some embodiments, the resonant rod has a body portion, and the tap structure is integrally formed with the body portion corresponding to the resonant rod.

In some embodiments, the resonant rod provided with the tap structure has a resonant disk, the tap structure being integrally formed with the resonant disk corresponding to the resonant rod.

In some embodiments, the resonant rod assembly comprises a plurality of resonant rods, at least two of which are each provided with the tap structure and are each coupled to the same signal transmission terminal.

In some embodiments, the resonant rod assembly comprises a plurality of resonant rods, and a coupling rib connected between two resonant rods, at least one of the coupling ribs being provided with the tap structure.

In some embodiments, the tap structure comprises a connecting part and an extending part which are sequentially connected, wherein the connecting part is integrally connected with the resonant rod assembly, the extending part is bent and connected with the connecting part, and the extending part extends towards the inner conductor and is coupled and connected with the inner conductor.

In some embodiments, the tap structure further includes a coupling portion bent to be connected to an end of the extension portion remote from the connection portion, the coupling portion being disposed opposite to and coupled to the inner conductor.

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

The embodiment of the application also aims to provide communication equipment which comprises the filter provided by the embodiment of the application.

The beneficial effect of the filter that this application provided lies in:

the filter that this application embodiment provided, accessible make resonant rod subassembly set up integrated into one piece's structure of taking a percentage to through making the structure of taking a percentage extend towards the inner conductor of signal transmission end and set up and be connected with the inner conductor coupling, and be convenient for resonant rod subassembly and signal transmission end realization coupling are connected. And because the tap structure and the internal structure of the resonant rod assembly are integrally formed and connected, the assembly procedure between the tap structure and the internal structure of the resonant rod assembly can be omitted, the reliability and stability of the coupling connection between the tap structure and the internal structure of the resonant rod assembly can be improved, and the risk that the tap structure falls off from the resonant rod assembly can be reduced, so that the assembly convenience and the assembly consistency of the tap structure can be effectively ensured and improved, and the consistency of the indexes of the filter can be effectively ensured and improved.

Drawings

In order to clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

Fig. 1 is a schematic perspective view of a filter according to an embodiment of the present application;

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

fig. 3 is a schematic diagram illustrating the cooperation between the resonant rod assembly and the signal transmission terminal provided in fig. 2.

Wherein, each reference sign in the figure:

10-resonant rod components, 11-tap structures, 111-connecting parts, 112-extending parts, 113-coupling parts, 12-resonant rods, 121-main body parts, 122-resonant discs and 13-coupling ribs; 20-signal input terminal, 21-signal transmission terminal, 211-inner conductor; 30-signal output terminal; 40-filter housing, 41-cavity, 411-resonant cavity, 42-cover plate, 421-tuning part.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application clear, the present application is described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Existing filters typically include resonant rods disposed within the filter and a signal transmission end for inputting or outputting a signal, the signal transmission end being coupled to one of the resonant rods. Specifically, a tap extending towards the signal transmission end is welded on the resonant rod, and the tap is welded with the signal transmission end, so that the resonant rod and the signal transmission end are in coupling connection. However, in this way, the fitting convenience and fitting uniformity of the taps may be poor, resulting in poor uniformity of the filter index.

Therefore, the embodiment of the application provides a filter, which can be used for conveniently realizing coupling connection between the resonant rod assembly and the signal transmission end by enabling the resonant rod assembly to be provided with an integrally formed tap structure and enabling the tap structure to extend towards the inner conductor of the signal transmission end and be connected with the inner conductor in a coupling way. And because the tap structure and the internal structure of the resonant rod assembly are integrally formed and connected, the assembly procedure between the tap structure and the internal structure of the resonant rod assembly can be omitted, the reliability and stability of the coupling connection between the tap structure and the internal structure of the resonant rod assembly can be improved, and the risk that the tap structure falls off from the resonant rod assembly can be reduced, so that the assembly convenience and the assembly consistency of the tap structure can be effectively ensured and improved, and the consistency of the indexes of the filter can be effectively ensured and improved.

The following detailed description of specific implementations of the present application refers to specific embodiments:

referring to fig. 1, 2 and 3, some embodiments of the present application provide a filter, which includes a resonant rod assembly 10 disposed in a column, and a signal transmission end 21 coupled to the resonant rod assembly 10 and used for inputting or outputting a signal, wherein the signal transmission end 21 is provided with an inner conductor 211, the resonant rod assembly 10 is provided with an integrally formed tap structure 11, and the tap structure 11 extends toward the inner conductor 211 and is coupled to the inner conductor 211.

The filter has at least one resonant rod assembly 10 directly coupled to the signal transmission terminal 21. The resonant beam assembly 10 includes a resonant beam 12 or a plurality of resonant beams 12 arranged in a row. The resonant rod 12 is a metal piece, optionally a sheet metal piece.

Of course, in some possible embodiments, other resonant rod assemblies that are not directly coupled to the signal transmission end 21 may be disposed inside the filter, and the other resonant rod assemblies and the resonant rod assembly 10 may be disposed in the same column or may be disposed in different columns, which is not limited in this embodiment. The other resonant rod assemblies and the resonant rods 12 included in the resonant rod assembly 10 described above can be configured to provide a desired coupling relationship to form a complete, ordered signal path within the filter.

It should be further noted that the filter is provided with at least one signal input 20 and at least one signal output 30, the signal input 20 being adapted to input signals and energy to the resonance rod 12 connected thereto, and the signal output 30 being adapted to output signals and energy from the resonance rod 12 connected thereto. Based on this, the filter can input signals and energy to the resonance rods 12 connected with the signal input end 20, sequentially transmit energy along the signal channels formed by the resonance rods 12, gradually filter and inhibit clutter signals and interference signals, and output signals and energy through the signal output end 30, so as to complete the filtering operation of the filter.

At least one of the signal input terminals 20 and the signal output terminals 30 adopts the structural design provided in this embodiment, namely the signal transmission terminal 21 mentioned in this embodiment.

The signal transmission terminal 21 is provided with an inner conductor 211. One end of the inner conductor 211 is connected to an external device of the filter to realize signal input and output. The other end of the inner conductor 211 extends into the filter to facilitate coupling with the resonator rod assembly 10 to effect signal, energy transfer between it and the resonator rod assembly 10.

The resonant tank assembly 10 is provided with a tap structure 11. The tap structure 11 may be a sheet structure, a columnar structure, a rod-like structure, a wire-like structure, or the like, which is not limited in this embodiment. One end of the tap structure 11 is integrally formed with and integrally connected to the internal structure of the resonant rod assembly 10. The other end of the tap structure 11 extends towards the inner conductor 211 and is coupled to the inner conductor 211. Based on this, the coupling connection between the signal transmission end 21 and the resonance rod assembly 10 can be conveniently and rapidly realized, and, because the tap structure 11 and the internal structure of the resonance rod assembly 10 are integrally formed and connected, the assembly procedure between the tap structure 11 and the internal structure of the resonance rod assembly 10 can be omitted, the reliability and stability of the coupling connection between the tap structure 11 and the internal structure of the resonance rod assembly 10 can be improved, and the risk that the tap structure 11 falls off from the resonance rod assembly 10 can be reduced, thereby effectively guaranteeing and improving the assembly convenience and the assembly consistency of the tap structure 11.

In summary, the filter provided in the embodiments of the present application may facilitate the coupling connection between the resonant rod assembly 10 and the signal transmission end 21 by making the resonant rod assembly 10 provide the integrally formed tap structure 11, and by making the tap structure 11 extend toward the inner conductor 211 of the signal transmission end 21 and be coupled to the inner conductor 211. In addition, since the tap structure 11 is integrally formed and connected with the internal structure of the resonant rod assembly 10, the assembly process between the tap structure 11 and the internal structure of the resonant rod assembly 10 can be omitted, the reliability and stability of the coupling connection between the tap structure 11 and the internal structure of the resonant rod assembly 10 can be improved, and the risk that the tap structure 11 falls off from the resonant rod assembly 10 can be reduced, so that the assembly convenience and the assembly consistency of the tap structure 11 can be effectively ensured and improved, and the consistency of the indexes of the filter can be effectively ensured and improved.

Referring to fig. 1, 2 and 3, in some embodiments of the present application, the filter further includes a filter housing 40, and the resonant rod assembly 10 (and other resonant rod assemblies) is disposed in the filter housing 40, and each signal input end 20 including the signal transmission end 21 and each signal output end 30 are installed through the filter housing 40.

The filter housing 40 includes a cavity 41 and a cover 42. The cavity 41 has one or more resonant cavities 411, and a resonant rod 12 is provided in the resonant cavity 411. One end of the resonance rod 12 is connected to one side (e.g., the cavity 41) of the filter housing 40, and the other end of the resonance rod 12 is spaced apart from the other side (e.g., the cover 42) of the filter housing 40. Alternatively, the resonance rod 12 may be connected to the filter housing 40 by, but not limited to, welding, integral connection, riveting, crimping, screw fastening, screwing, clamping, or the like, which is not limited in this embodiment.

The cover plate 42 is a single-layer cover plate or a multi-layer cover plate, and the cover plate 42 covers the cavity 41, especially the resonant cavity 411, so that a shielding function can be realized, and signal leakage is prevented. The laminate of the cover plate 42, which at least participates in covering the cavity 41, is a metal piece.

In one possible embodiment, at least one layer of the cover plate 42 is a deformable cover plate 42, and the cover plate 42 has a tuning portion 421 that is disposed corresponding to the resonant rod 12 and is deformable under force. Based on this, when one end of the resonance rod 12 is connected with the cavity 41, and the other end of the resonance rod 12 is spaced from the tuning part 421, the tuning part 421 can be deformed by stress, so as to adjust the distance between the tuning part 421 and the resonance rod 12, thereby adjusting the capacitance between the tuning part 421 and the resonance rod 12, realizing the adjustment of the resonance frequency, and being simple and convenient for adjustment, and being beneficial to miniaturization of the filter.

In another possible embodiment, the cover 42 is provided with a threaded hole (not shown), and the filter further includes a tuning screw (not shown) screwed to the threaded hole of the cover 42 and disposed in correspondence with the resonance rod 12. Based on this, the length of the portion of the tuning screw penetrating into the cavity 41 can be adjusted by rotating the tuning screw with respect to the cover plate 42, thereby achieving adjustment of the resonance frequency, which is very convenient.

Referring to fig. 1, 2 and 3, in some embodiments of the present application, a resonant rod assembly 10 includes at least one resonant rod 12, and at least one resonant rod 12 is provided with a tapping structure 11.

Among the resonant rods 12 included in the resonant rod assembly 10, at least one resonant rod 12 is provided with a tap structure 11, that is, one or more resonant rods 12 may be provided with the tap structure 11. The tapping structure 11 is integrally formed with and integrally connected to a corresponding resonant rod 12 (i.e., the resonant rod 12 provided with the tapping structure 11). The tap structure 11 may be connected to any position on the corresponding resonant rod 12, for example, to an end, a middle, a bottom, etc. of the corresponding resonant rod 12, which is not limited in this embodiment.

Through adopting above-mentioned scheme, can set up integrated into one piece's structure of taking a percentage 11 on at least one resonance pole 12 of resonance pole subassembly 10 to the shaping of taking a percentage 11's processing, and be convenient for correspond resonance pole 12 through take a percentage structure 11 and signal transmission end 21 realize direct, stable, reliable coupling connection, thereby can be favorable to reinforcing and correspond the coupling between resonance pole 12 and the signal transmission end 21, can be favorable to guaranteeing and improve the performance index of wave filter.

Referring to fig. 1, 2 and 3, in some embodiments of the present application, the resonant rod 12 has a main body 121, and the tap structure 11 is integrally formed with the main body 121 of the corresponding resonant rod 12.

Through adopting above-mentioned scheme, accessible with the structure 11 integrated into one piece that takes a percentage, an organic whole is connected to the main part 121 of corresponding resonance pole 12 to the shaping of taking a percentage of structure 11 is convenient for, and the signal transmission end 21 of being convenient for is through taking a percentage the structure 11 and the main part 121 direct coupling of corresponding resonance pole 12, thereby can be convenient for signal transmission end 21 and the corresponding resonance pole 12 realize direct, stable, reliable capacitive coupling, can be favorable to reinforcing coupling, expansion bandwidth.

Referring to fig. 1, 2 and 3, in some embodiments of the present application, a resonant rod 12 provided with a tapping structure 11 has a resonant disc 122, and the tapping structure 11 is integrally formed with the resonant disc 122 of the corresponding resonant rod 12.

Among the resonant rods 12 included in the resonant rod assembly 10, at least the resonant rod 12 provided with the tap structure 11 has a resonant disk 122. Of course, other resonant rods 12 without the tap structure 11 may also have the resonant disk 122, which is not limited in this embodiment. The tap structure 11 is integrally formed and integrally connected to the resonator plate 122 of the corresponding resonator rod 12.

By adopting the scheme, the tap structure 11 can be integrally formed and integrally connected to the resonant disc 122 of the corresponding resonant rod 12, so that the tap structure 11 is conveniently formed, the signal transmission end 21 is conveniently and directly coupled with the resonant disc 122 of the corresponding resonant rod 12 through the tap structure 11, the signal transmission end 21 and the corresponding resonant rod 12 can be conveniently and directly, stably and reliably capacitively coupled, and the coupling connection position of the tap structure 11 and the corresponding resonant rod 12 is positioned on the resonant disc 122, so that the distance (height) between the coupling connection position and the inner wall of the filter shell 40 connected with the resonant rod 12 is correspondingly prolonged, and further coupling enhancement and bandwidth expansion can be facilitated.

Referring to fig. 1, 2 and 3, in some embodiments of the present application, the resonant beam assembly 10 includes a plurality of resonant beams 12, at least two resonant beams 12 are each provided with a tap structure 11 and are each coupled to the same signal transmission terminal 21.

Among the resonant rods 12 included in the resonant rod assembly 10, at least two resonant rods 12 are provided with tap structures 11, respectively. The resonance rods 12 provided with the tap structure 11 may be resonance rods 12 provided adjacently, or may be resonance rods 12 provided not adjacently. Each of the resonant rods 12 provided with the tap structures 11 may be coupled to the inner conductor 211 of the same signal transmission terminal 21 by means of the corresponding tap structure 11.

By adopting the above scheme, at least two resonance rods 12 in the resonance rod assembly 10 can be respectively connected to the inner conductor 211 of the same signal transmission end 21 through the tap structure 11 in a direct coupling way, based on the fact, the signal transmission end 21 can form a plurality of signal transmission paths with a plurality of resonance rods 12, and the phenomenon of 180 degrees of phase difference exists in the plurality of signal transmission paths, so that the filter can be conveniently planned to generate required transmission zero points, out-of-band rejection and filtering effects can be conveniently realized by the filter, and the high selectivity requirement can be conveniently met by the filter.

Referring to fig. 1, 2 and 3, in some embodiments of the present application, a resonant rod assembly 10 includes a plurality of resonant rods 12, and a coupling rib 13 connected between the two resonant rods 12, where at least one coupling rib 13 is provided with a tap structure 11.

It should be noted that the coupling rib 13 is connected between the two resonant rods 12 to be coupled, and may be used to enhance the coupling between the two resonant rods 12. Of the coupling ribs 13 comprised in the resonant bar assembly 10, at least one coupling rib 13 is provided with a tap structure 11, i.e. one or more coupling ribs 13 may be provided with a tap structure 11. The tap structure 11 is integrally formed with the corresponding coupling rib 13 (i.e., the coupling rib 13 provided with the tap structure 11). The tap structure 11 may be connected to any position of the corresponding coupling rib 13, for example, to an end portion, a middle portion, or the like of the corresponding coupling rib 13, which is not limited in this embodiment.

Through adopting above-mentioned scheme, can set up integrated into one piece's structure of taking a percentage 11 on the at least one coupling muscle 13 of resonant rod assembly 10 to signal transmission end 21 realizes stable, reliable coupling through taking a percentage structure 11 and corresponding coupling muscle 13 and is connected, thereby can be convenient for signal transmission end 21 and two resonant rods 12 that coupling muscle 13 are connected realize coupling and are connected, can even be convenient for signal transmission end 21 and two resonant rods 12 that coupling muscle 13 are connected form many signal transmission paths and produce transmission zero point, thereby can be favorable to the guarantee and improve the performance of wave filter.

Referring to fig. 1, 2 and 3, in some embodiments of the present application, the tap structure 11 includes a connecting portion 111 and an extension portion 112 connected in sequence, the connecting portion 111 is integrally connected to the resonant rod assembly 10, the extension portion 112 is bent and connected to the connecting portion 111, and the extension portion 112 extends toward the inner conductor 211 and is coupled to the inner conductor 211.

The tap structure 11 includes a connection portion 111 and an extension portion 112. One end of the connecting portion 111 is integrally connected to the structure of the resonant rod 12, the coupling rib 13, and the like of the resonant rod assembly 10. The other end of the connection portion 111 is integrally connected to one end of the extension portion 112. The other end of the extension 112 is bent and formed with respect to the end portion thereof connected to the connection portion 111, extends toward the inner conductor 211, and is coupled to the inner conductor 211.

By adopting the above scheme, the tap structure 11 can be connected with the corresponding structure of the resonant rod assembly 10 through the connecting portion 111 and extend towards the inner conductor 211 through the extending portion 112, so that convenient and reliable coupling connection with the inner conductor 211 is facilitated, and the coupling relationship between the tap structure 11 and the inner conductor 211 is facilitated to be stabilized. Further, the bending formation of the tap structure 11, that is, the processing formation of the tap structure 11 can be facilitated based on the structural arrangement of the connecting portion 111 and the extending portion 112 connected in sequence.

Referring to fig. 1, 2 and 3, in some embodiments of the present application, the tap structure 11 further includes a coupling portion 113 bent and connected to an end of the extension portion 112 away from the connection portion 111, where the coupling portion 113 is disposed opposite to and coupled to the inner conductor 211.

The tap structure 11 is further provided with a coupling portion 113 in addition to the extension portion 112. Specifically, one end of the coupling portion 113 is connected to an end of the extension portion 112 remote from the connection portion 111, and the other end of the coupling portion 113 is bent and formed with respect to one end thereof. The coupling portion 113 is disposed opposite to the inner conductor 211 and coupled thereto. The coupling portion 113 may be coupled to the inner conductor 211 by, but not limited to, bonding, riveting, crimping, plugging, welding, soldering, or the like, which is not limited to the present embodiment.

By adopting the above scheme, the tap structure 11 can be connected with the corresponding structure of the resonant rod assembly 10 through the connecting part 111, can extend towards the inner conductor 211 through the extending part 112 and form reliable support for the coupling part 113, and can be arranged opposite to the inner conductor 211 through the coupling part 113 connected with the extending part 112 in a bending way and coupled with the coupling part. Based on this, the bending and forming, the processing and forming of the tap structure 11 can be facilitated, and the connection area and the coupling area between the tap structure 11 and the inner conductor 211 can be enlarged correspondingly by the coupling portion 113, so that the coupling strength between the tap structure 11 and the inner conductor 211 can be further enhanced, the assembly between the tap structure 11 and the inner conductor 211 can be facilitated, and the coupling relationship between the tap structure 11 and the inner conductor 211 can be stabilized more easily.

Referring to fig. 1, 2 and 3, in some embodiments of the present application, the resonant rod assembly 10 is integrally formed from a sheet metal substrate.

It should be noted that, the resonant rod 12 may be designed as a square and flat sheet metal resonant rod, and based on this, the resonant rod assembly 10 including the resonant rod 12, the coupling rib 13 and the tapping structure 11 may be integrally formed by sheet metal base material. Wherein the tap structure 11 is bendable.

Through adopting above-mentioned scheme, can adopt panel beating substrate integrated into one piece shaping resonance lever subassembly 10, and ensure and improve processing convenience, structural strength and the assembly convenience of resonance lever subassembly 10, especially ensure and improve the assembly convenience and the joint strength between the corresponding structure of taking a percentage structure 11 and resonance lever subassembly 10 to can effectively ensure and improve the assembly convenience and the index uniformity of wave filter.

Referring to fig. 1, some embodiments of the present application further provide a communication device, including a filter provided in the embodiments of the present application. The communication device may be a simplex, a duplexer, a multiplexer, a combiner, an antenna, a base station, or the like. Through adopting above-mentioned scheme, can guarantee that communication equipment can realize higher performance index through adopting the higher filter of index uniformity that this application embodiment provided.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, or alternatives falling within the spirit and principles of the present application.

Claims (10)

1. The filter is characterized by comprising resonant rod assemblies arranged in a row, and a signal transmission end which is coupled with the resonant rod assemblies and is used for inputting or outputting signals, wherein the signal transmission end is provided with an inner conductor, the resonant rod assemblies are provided with integrally formed tap structures, and the tap structures extend towards the inner conductor and are coupled with the inner conductor.

2. The filter of claim 1, wherein the resonant rod assembly includes at least one resonant rod, at least one of the resonant rods being provided with the tap structure.

3. The filter of claim 2, wherein the resonating rod has a body portion, and the tap structure is integrally formed with the body portion corresponding to the resonating rod.

4. The filter of claim 2, wherein the resonant rod provided with the tap structure has a resonant disk, the tap structure being integrally formed with the resonant disk corresponding to the resonant rod.

5. A filter according to claim 2, wherein the resonant rod assembly comprises a plurality of said resonant rods, at least two of said resonant rods each being provided with said tap structure and each being coupled to the same signal transmission terminal.

6. The filter of claim 1, wherein said resonant rod assembly includes a plurality of resonant rods and a coupling rib connected between two of said resonant rods, at least one of said coupling ribs being provided with said tap structure.

7. The filter of claim 1, wherein the tap structure includes a connection portion and an extension portion connected in sequence, the connection portion being integrally connected to the resonant rod assembly, the extension portion being bent to connect to the connection portion, the extension portion extending toward and coupled to the inner conductor.

8. The filter of claim 7, wherein the tap structure further comprises a coupling portion bent to connect to an end of the extension portion remote from the connection portion, the coupling portion being disposed opposite and coupled to the inner conductor.

9. The filter of any of claims 1-8, wherein the resonant rod assembly is integrally formed from a sheet metal substrate.

10. A communication device comprising a filter according to any of claims 1-9.