CN216055104U - Novel filter - Google Patents
Novel filter Download PDFInfo
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- CN216055104U CN216055104U CN202122052671.0U CN202122052671U CN216055104U CN 216055104 U CN216055104 U CN 216055104U CN 202122052671 U CN202122052671 U CN 202122052671U CN 216055104 U CN216055104 U CN 216055104U
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Abstract
The utility model discloses a novel filter, which comprises a cavity, a resonator arranged in the cavity and a tuning screw matched with the resonator, wherein the resonator is arranged in the cavity; the resonator is a sheet-type resonator, and a tuning hole is arranged on the sheet-type resonator and is a through hole; the tuning screw is opposite to the tuning hole. The novel filter has the characteristics of small volume, light weight, simple structure, convenience in assembly, strong operability, high production efficiency and the like.
Description
Technical Field
The utility model relates to the technical field of radio frequency communication, in particular to a novel filter.
Background
The performance of the transceiver filter serving as a key device of the radio frequency front end of the mobile base station directly affects the communication quality, and with the development of a mobile communication network and the application of a large-scale MIMO antenna in a 5G communication system, the number of the front end filters is greatly increased, which puts higher requirements on the miniaturization, the light weight and the integration of the filters.
In the prior art, a common coaxial cavity filter and a common dielectric waveguide filter are difficult to realize miniaturization and light weight in volume and weight, a tuning screw rod of the conventional filter is arranged above a cavity, a resonator is of a coaxial mushroom type, and the tuning screw rod and the resonator are coaxial, so that the structure has the problems of being limited by the height of a product, small in adjusting range and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a novel filter, which comprises a cavity, a resonator arranged in the cavity and a tuning screw matched with the resonator; the resonator is a sheet-type resonator, and a tuning hole is arranged on the sheet-type resonator and is a through hole; the tuning screw is opposite to the tuning hole.
Preferably, the tuning hole is circular or polygonal.
Preferably, the polygon is a square or a triangle.
Preferably, the axis of the tuning screw and the center of the tuning hole are located on the same straight line.
Preferably, the cavity is a thin-wall extruded tubular cavity.
Preferably, the tuning screw is arranged on the side wall of the cavity.
Preferably, the side wall of the cavity is provided with a screw hole for installing a tuning screw rod, and the tuning screw rod is in threaded connection with the screw hole.
Preferably, the bottom wall of the cavity is provided with a slot for inserting the patch resonator, and the slot and the cavity extend in the same direction.
Preferably, the chip resonator is inserted into the slot and fixed to the slot by welding.
Preferably, two ends of the cavity are respectively sealed by cover plates.
The utility model has the advantages and beneficial effects that: the novel filter has the characteristics of small size, light weight, simple structure, convenience in assembly, strong operability, high production efficiency and the like.
The sheet resonator is provided with a tuning hole, a tuning screw is arranged on the side wall of the cavity, and the frequency of the resonant cavity is adjusted through the tuning screw; compared with the adjusting mode of the conventional coaxial filter, the structure of the utility model has the advantages of more convenient screw adjustment, wider frequency adjusting range, stronger coupling and stable performance; compared with the conventional coaxial filter, the filter has the advantages of simple design, convenient processing, small size, simple structure and light weight, is suitable for 5G miniaturized products, and completely meets the requirement of the construction of a 5G communication base station on the miniaturization of a functional module.
The filter of the utility model has simple processing and installation modes, which brings convenience to the assembly, debugging and maintenance of the filter, thereby improving the efficiency and reducing the cost.
Drawings
FIG. 1 is an external view of a filter according to the present invention;
FIG. 2 is an exploded view of the filter of the present invention;
FIG. 3 is a front cross-sectional view of the filter of the present invention;
figure 4 is a side cross-sectional view of the filter 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 to 4, a novel filter includes a cavity 1, a resonator 2 disposed in the cavity 1, and a tuning screw 3 engaged with the resonator 2;
the cavity 1 is a tubular cavity formed by thin-wall extrusion;
the resonator 2 is a sheet-type resonator; the bottom wall of the cavity 1 is provided with a slot 11 for inserting the patch type resonator 2, and the slot 11 and the cavity 1 extend in the same direction; the sheet resonator 2 is inserted into the slot 11 and is welded and fixed with the slot 11; the sheet resonator 2 is provided with a tuning hole 21, the tuning hole 21 is a through hole, and the tuning hole 21 is circular (it should be noted that the tuning hole 21 may also be polygonal, such as square or triangle);
the tuning screw 3 is arranged on the side wall of the cavity 1; the side wall of the cavity 1 is provided with a screw hole 12 for installing the tuning screw 3, and the tuning screw 3 is in threaded connection with the screw hole 12; the tuning screw 3 is opposite to the tuning hole 21, and the axis of the tuning screw 3 and the center of the tuning hole 21 are positioned on the same straight line;
two ends of the cavity 1 are respectively sealed by cover plates 4.
The sheet resonator 2 is provided with a tuning hole 21, a tuning screw 3 is arranged on the side wall of the cavity 1, and the frequency of the resonant cavity is adjusted through the tuning screw 3; compared with the adjusting mode of the conventional coaxial filter, the structure of the utility model has the advantages of more convenient screw adjustment, wider frequency adjusting range, stronger coupling and stable performance; compared with the conventional coaxial filter, the resonator 2 has the advantages of simple design, convenient processing, small size, simple structure and light weight, is suitable for 5G miniaturized products, and completely meets the requirement of the construction of a 5G communication base station on the miniaturization of functional modules.
The filter of the utility model has simple processing and installation modes, which brings convenience to the assembly, debugging and maintenance of the filter, thereby improving the efficiency and reducing the cost.
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 novel filter comprises a cavity, a resonator arranged in the cavity, and a tuning screw matched with the resonator; the method is characterized in that: the resonator is a sheet-type resonator, and a tuning hole is formed in the sheet-type resonator; the tuning screw is opposite to the tuning hole.
2. The novel filter of claim 1, wherein the tuning holes are circular or polygonal.
3. The novel filter of claim 2, wherein the polygon is a square or a triangle.
4. The novel filter of claim 1, wherein the axis of the tuning screw and the center of the tuning hole are in the same line.
5. The novel filter of claim 1, wherein the cavity is a thin-walled extruded tubular cavity.
6. The novel filter of claim 1, wherein the tuning screw is disposed on a sidewall of the cavity.
7. The novel filter of claim 1, wherein the cavity sidewall is provided with a screw hole for mounting a tuning screw, and the tuning screw is in threaded connection with the screw hole.
8. The novel filter of claim 1, wherein the cavity bottom wall is provided with slots for the plug-type resonators.
9. The novel filter of claim 1, wherein the chip-type resonator is inserted into the slot and fixed by welding to the slot.
10. The novel filter of claim 1, wherein the two ends of the cavity are respectively closed by a cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122052671.0U CN216055104U (en) | 2021-08-30 | 2021-08-30 | Novel filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122052671.0U CN216055104U (en) | 2021-08-30 | 2021-08-30 | Novel filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216055104U true CN216055104U (en) | 2022-03-15 |
Family
ID=80622308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122052671.0U Active CN216055104U (en) | 2021-08-30 | 2021-08-30 | Novel filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216055104U (en) |
-
2021
- 2021-08-30 CN CN202122052671.0U patent/CN216055104U/en active Active
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