CN216698689U - Filter - Google Patents
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- CN216698689U CN216698689U CN202123345021.1U CN202123345021U CN216698689U CN 216698689 U CN216698689 U CN 216698689U CN 202123345021 U CN202123345021 U CN 202123345021U CN 216698689 U CN216698689 U CN 216698689U
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Abstract
The utility model discloses a filter, which comprises a cavity, wherein a resonator is arranged in the cavity; the cavity is a metal cavity; the resonator is a plastic resonator. The filter adopts the plastic resonator, has the characteristics of small volume, light weight and the like, and can completely meet the requirement of the construction of a 5G communication base station on the light weight of the functional module.
Description
Technical Field
The utility model relates to the technical field of radio frequency communication, in particular to a filter.
Background
The performance of the transceiver filter used as a key device at the radio frequency front end of the mobile base station directly affects the communication quality. With the development of mobile communication networks and the application of massive MIMO antennas in 5G communication systems, the number of front-end filters will increase greatly, which puts higher demands on the miniaturization, light weight and integration of the filters.
In the prior art, a coaxial cavity filter and a ceramic filter are commonly used. The cavity of the coaxial cavity filter is manufactured by die casting, and is large in size and heavy in weight. The dielectric waveguide filter is difficult to debug, and ceramic materials are easy to crack and cause electrical property failure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a filter, which comprises a cavity, wherein a resonator is arranged in the cavity; the cavity is a metal cavity (namely a metal cavity); the resonator is a plastic resonator.
Preferably, the plastic resonator is a PEI plastic resonator.
Preferably, the PEI plastic resonator comprises a cylindrical PEI plastic resonance column.
Preferably, the cavity is a box-shaped cavity with an open top end.
Preferably, the top opening of the cavity is closed by a cover plate.
Preferably, the plastic resonator is welded with the bottom wall of the cavity.
Preferably, the top end of the cavity is also provided with a fly rod assembly.
Preferably, the flying bar assembly is fixed on the bottom surface of the cover plate.
Preferably, a tap piece is further arranged inside the cavity.
Preferably, one end of the cavity is further provided with a joint.
The utility model has the advantages and beneficial effects that: the filter adopts the plastic resonator, has the characteristics of small volume, light weight and the like, and can completely meet the requirement of the construction of a 5G communication base station on the light weight of a functional module.
Firstly, the cavity and the plastic resonator are welded together, the flying rod assembly is arranged in the cavity, and then the cover plate and the cavity are welded, so that the assembly can be completed.
Drawings
FIG. 1 is a schematic of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The technical scheme of the specific implementation of the utility model is as follows:
as shown in fig. 1, a filter includes a cavity 1, the cavity 1 is a box-shaped cavity with an open top, and the cavity 1 is a metal cavity (i.e., a metal cavity);
the top end opening of the cavity 1 is sealed by a cover plate (the cover plate is not shown in the figure);
a resonator 2 is arranged in the cavity 1; the resonator 2 is a plastic resonator 2;
specifically, the method comprises the following steps: the plastic resonator 2 is a PEI plastic resonator 2; the PEI plastic resonator 2 comprises a cylindrical PEI plastic resonance column;
the plastic resonator 2 is welded with the bottom wall of the cavity 1;
the top end of the cavity 1 is also provided with a fly rod component 3; the flying rod assembly 3 is fixed on the bottom surface of the cover plate;
a tap piece 4 is also arranged at one end of the cavity 1;
the other end of the cavity 1 is also provided with a joint 5.
During assembly, the plastic resonator 2 and the cavity 1 are welded together, the tap piece 4 and the joint 5 are installed, and then the cover plate provided with the flying rod assembly 3 and the cavity 1 are welded, so that the assembly can be completed.
Therefore, the filter provided by the utility model adopts the plastic resonator 2, has the characteristics of small volume, light weight and the like, and can completely meet the requirement of the construction of a 5G communication base station on the light weight of the functional module.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A filter comprises a cavity, wherein a resonator is arranged in the cavity; the device is characterized in that the cavity is a metal cavity; the resonator is a plastic resonator.
2. The filter of claim 1, wherein the plastic resonator is a PEI plastic resonator.
3. The filter of claim 2, wherein the PEI plastic resonator comprises a cylindrical PEI plastic resonator cylinder.
4. The filter of claim 3, wherein the cavity is a box-shaped cavity with an open top end.
5. The filter of claim 4, wherein the top end of the cavity is closed by a cover plate.
6. The filter of claim 1, wherein the plastic resonator is welded to the bottom cavity wall.
7. The filter of claim 5, wherein the top end of the cavity is further provided with a fly rod assembly.
8. The filter of claim 7, wherein the fly rod assembly is secured to the underside of the cover plate.
9. The filter of claim 1, wherein the cavity is further provided with a tap piece inside.
10. The filter of claim 1, wherein the cavity is further provided with a connector at one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123345021.1U CN216698689U (en) | 2021-12-29 | 2021-12-29 | Filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123345021.1U CN216698689U (en) | 2021-12-29 | 2021-12-29 | Filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216698689U true CN216698689U (en) | 2022-06-07 |
Family
ID=81843747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123345021.1U Active CN216698689U (en) | 2021-12-29 | 2021-12-29 | Filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216698689U (en) |
-
2021
- 2021-12-29 CN CN202123345021.1U patent/CN216698689U/en active Active
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