CN215771502U - Coupling adjusting structure, filter and communication equipment - Google Patents
Coupling adjusting structure, filter and communication equipment Download PDFInfo
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- CN215771502U CN215771502U CN202122328284.5U CN202122328284U CN215771502U CN 215771502 U CN215771502 U CN 215771502U CN 202122328284 U CN202122328284 U CN 202122328284U CN 215771502 U CN215771502 U CN 215771502U
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Abstract
The utility model provides a coupling adjusting structure, a filter and communication equipment, wherein the coupling adjusting structure is used for the filter and comprises a plastic supporting piece, a plastic supporting piece and a plastic adjusting piece, wherein the plastic supporting piece is rotatably connected to a cover plate of the filter; the coupling piece is arranged in the cavity of the filter and is coaxially connected with the plastic supporting piece, a coupling window is arranged in the cavity, and the coupling piece is arranged at the coupling window and is positioned between the two resonant tubes of the filter; the end face of one end, far away from the coupling piece, of the plastic support piece is provided with an adjusting groove, and the adjusting groove is used for supplying external force to rotate the plastic support piece and drive the coupling piece to rotate so as to adjust the coupling amount between the resonance tubes. The coupling adjusting structure can improve the intermodulation performance and the high-power performance of a product, and meanwhile, the coupling adjusting structure is convenient to adjust and low in cost because the plastic supporting piece is adopted, and the adjusting groove is formed in the end face of one end, far away from the coupling piece, of the plastic supporting piece and used for allowing an external force to act to rotate the plastic supporting piece.
Description
Technical Field
The present invention relates to the field of communication equipment technologies, and in particular, to a coupling adjustment structure, a filter, and a communication device.
Background
The cavity filter is widely applied to the field of communication as a frequency selection device, in particular to the field of radio frequency communication. In a base station, a filter is used to select a communication signal and filter out clutter or interference signals outside the frequency of the communication signal.
The traditional cavity coaxial filter mainly comprises a cavity, a cover plate, a resonance rod, a tuning screw rod, a coupling screw rod, a window and a connector. The cavity, the window and the coupling screw form a coupling mechanism of the cavity filter, wherein the coupling screw is longer in length inside the cavity, the coupling amount is larger, and the coupling amount is smaller. In the traditional structure, as the coupling screw is adopted, a threaded hole needs to be formed in the cover plate to be matched with the coupling screw for use, and burrs, chips and the like are inevitably generated in the process of matching the coupling screw with the threaded hole, so that the intermodulation performance and the power performance of the filter are reduced; in addition, the coupling screw rod of traditional structure is the metalwork, and its regulation needs the cooperation nut, and it is inconvenient and with high costs to adjust.
SUMMERY OF THE UTILITY MODEL
The utility model provides a coupling adjusting structure which can improve the intermodulation performance and the high-power performance of a product, is convenient to adjust and has low cost, and a filter and communication equipment adopting the coupling adjusting structure.
In a first aspect, a coupling adjustment structure for a filter is provided, the coupling adjustment structure comprising:
the plastic support is rotatably connected to the cover plate of the filter; and
the coupling piece is arranged in a cavity of the filter and is coaxially connected with the plastic supporting piece, a coupling window is arranged in the cavity, and the coupling piece is arranged at the coupling window and is positioned between the two resonant tubes of the filter;
the end face of one end, far away from the coupling piece, of the plastic support piece is provided with an adjusting groove, and the adjusting groove is used for supplying external force to rotate the plastic support piece and drive the coupling piece to rotate so as to adjust the coupling amount between the resonance tubes.
In a first possible implementation form of the first aspect,
the plastic support comprises:
the end surface of one end of the adjusting part, which is far away from the coupling piece, is provided with the adjusting groove;
the inserting part is coaxially connected with one end of the adjusting part, which is far away from the adjusting groove, and the inserting part is inserted on the cover plate;
the limiting part is coaxially connected with one end of the inserting part, which is far away from the adjusting part; and
the connecting part is coaxially connected with one end, far away from the inserting part, of the limiting part and is used for being connected with the coupling piece.
In a second possible implementation manner of the first aspect, an outer diameter of the adjusting portion is larger than an outer diameter of the insertion portion, an outer diameter of the limiting portion is larger than an outer diameter of the insertion portion, and an outer diameter of the limiting portion is also larger than an outer diameter of the connecting portion.
In a third possible implementation manner of the first aspect, a through hole is formed in the cover plate along the thickness direction of the cover plate, and the insertion part is inserted into the through hole.
In a fourth possible implementation manner of the first aspect, the insertion part is in interference fit with the through hole; or the inserting part is fixed in the through hole through dispensing; or the inserting part is fixed in the through hole through ultrasonic welding.
In a fifth possible implementation manner of the first aspect, one end of the adjusting portion, which is close to the adjusting groove, is provided with a chamfer.
In a sixth possible implementation manner of the first aspect, the connection portion includes, coaxially connected:
the first connecting section is coaxially connected with the limiting part; and
a second connection section connected with the coupling member, the second connection section having an outer diameter smaller than that of the first connection section.
In a seventh possible implementation manner of the first aspect, the adjusting groove is a cross groove, a straight groove, an outer hexagonal cross groove or an inner hexagonal quincunx groove.
In a second aspect, a filter is provided, comprising:
a cavity having an open end;
the cover plate covers the opening end and is connected with the cavity;
at least two resonator tubes located within the cavity; and
the coupling adjustment structure according to the first aspect described above.
In a third aspect, a communication device is provided, which includes at least one filter provided in the second aspect.
According to the coupling adjustment structure of the first aspect provided by various embodiments, the coupling amount between the resonator tubes is adjusted by adopting the rotation of the plastic support member, and the coupling screw rod and the threaded hole on the cover plate of the traditional cavity filter are cancelled and replaced, so that the intermodulation performance and the high-power index of the cavity filter are prevented from being influenced by the factors such as burrs and chips generated when the coupling screw rod is matched with the threaded hole, the intermodulation performance and the high-power performance of a product can be improved, the production throughput of the product can be improved, the rejection rate and the maintenance cost of the product can be reduced, and the market competitiveness of the product can be improved; in addition, the plastic support piece is adopted, and the end face of one end, far away from the coupling piece, of the plastic support piece is provided with the adjusting groove which is used for supplying external force to rotate the plastic support piece, so that the coupling adjusting structure is convenient to adjust and low in cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a cross-sectional view of a filter according to a first embodiment of the present invention;
FIG. 2 is a top view of a plastic support of a coupling adjustment structure provided in accordance with a first embodiment of the present invention;
FIG. 3 is a side view of a plastic support of a coupling adjustment structure provided in accordance with a first embodiment of the present invention;
FIG. 4 is a top view of a plastic support of a coupling adjustment structure provided in accordance with a second embodiment of the present invention;
FIG. 5 is a side view of a plastic support of a coupling adjustment structure provided in accordance with a second embodiment of the present invention;
FIG. 6 is a top view of a plastic support of a coupling adjustment structure provided in accordance with a third embodiment of the present invention;
FIG. 7 is a side view of a plastic support of a coupling adjustment structure provided in a third embodiment of the present invention;
FIG. 8 is a top view of a plastic support of a coupling adjustment structure provided in accordance with a fourth embodiment of the present invention;
fig. 9 is a side view of a plastic support of a coupling adjustment structure according to a fourth embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
10. a cavity; 101. a resonant cavity; 102. a coupling window; 20. a cover plate; 201. a through hole; 30. a resonant tube; 40. a coupling adjustment structure; 41. a plastic support; 410. an adjustment groove; 411. an adjustment section; 412. a plug-in part; 413. a limiting part; 414. a connecting portion; 415. a first connection section; 416. a second connection section; 417. chamfering; 42. a coupling member.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the utility model.
Furthermore, the terms "first", "second" and "first" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Fig. 1 is a block diagram of a filter according to a first embodiment of the present invention. The filter of the utility model is particularly suitable for cavity filters. The filter includes a cavity 10, a cover plate 20, and a resonance tube 30. Further, the filter further comprises a coupling adjustment structure 40.
The cavity 10 is a metal cavity, the cavity 10 may be made of a metal material as a whole or at least a cavity with a metalized inner surface, and has a resonant cavity 101 and an open end, the cavity 10 may include at least two resonant cavities 101, and one resonant tube 30 is disposed in each resonant cavity 101. The cover plate 20 covers the opening end and is connected with the cavity 10, and the cover plate 20 and the cavity 10 can be connected by screws or the like.
The resonator tubes 30 are located within the cavity 10. In this embodiment, the resonator tubes 30 may be integrally formed with the cavity 10, i.e. the resonator tubes 30 are integrally formed on the inner side of the bottom of the cavity 10. In other embodiments, the resonator tubes 30 may also be separate components and fixedly connected to the cavity 10 by fixing elements.
In the present embodiment, the resonator tube 30 faces the cover plate 20, a plate capacitor C is formed between the cover plate 20 and the resonator tube 30, the frequency property of the filter is changed by changing the size of the plate capacitor C, and the size of the plate capacitor C is related to the distance between the cover plate 20 and the resonator tube 30. Therefore, the resonance frequency of the filter is changed by changing the distance between the cover plate 20 and the resonator tube 30. The filter has a resonant frequency calculation formula of F1/2 pi sqrt (L C), where F is the resonant frequency, pi is a constant, L is an inductance, and the larger the plate capacitance C, the lower the resonant frequency F, the smaller the plate capacitance C, and the higher the resonant frequency F.
The coupling adjustment structure 40 is disposed on the cover plate 20. In the present embodiment, the coupling adjustment structure 40 includes a plastic support 41 and a coupling member 42. Wherein the plastic support 41 is rotatably connected to the cover plate 20 of the filter; the coupling piece 42 is arranged in the cavity 10 of the filter, and the coupling piece 42 is coaxially connected with the plastic support 41; a coupling window 102 is arranged in the cavity 10, and the coupling element 42 is arranged at the coupling window 102 and located between the two resonator tubes 30 of the filter.
An adjusting groove 410 is formed in an end surface of one end of the plastic support 41, which is far away from the coupling element 42, and the adjusting groove 410 is used for applying an external force to rotate the plastic support 41 and drive the coupling element 42 to rotate, so as to adjust the coupling amount between the resonator tubes 30. Specifically, during the rotation of the coupling element 42, the coupling distance and the coupling area between the coupling element and the resonator tubes 30 are changed, and the coupling amount between the resonator tubes 30 is changed by rotating the coupling element 42, so as to adjust the coupling amount of the filter.
The coupling adjustment structure 40 provided by the embodiment adjusts the coupling amount between the two resonator tubes 30 by adopting the rotation of the plastic support 41, and cancels and replaces the coupling screw rod of the traditional cavity filter and the threaded hole on the cover plate 20, thereby avoiding the influence of factors such as burrs and chips generated when the coupling screw rod is matched with the threaded hole on the intermodulation performance and high-power index of the cavity filter, improving the intermodulation performance and high-power performance of the product, simultaneously improving the production throughput of the product, reducing the rejection rate and maintenance cost of the product, and further improving the market competitiveness of the product; in addition, because the plastic support 41 is adopted, and the end surface of one end of the plastic support 41 away from the coupling piece 42 is provided with the adjusting groove 410, the adjusting groove 410 is used for supplying external force to rotate the plastic support 41, so that the coupling adjusting structure 40 is convenient to adjust and has low cost.
In one embodiment, referring to fig. 2 to 9, the plastic supporting member 41 includes an adjusting portion 411, a plug portion 412, a limiting portion 413 and a connecting portion 414. The end surface of the adjusting part 411, which is far away from one end of the coupling piece 42, is provided with the adjusting groove 410; the plug part 412 is coaxially connected with the end part of one end of the adjusting part 411 away from the adjusting groove 410, and the plug part 412 is plugged on the cover plate 20; the limiting part 413 is coaxially connected with the end part of one end of the inserting part 412 far away from the adjusting part 411; the connecting portion 414 is coaxially connected to an end of the limiting portion 413 away from the insertion portion 412, and the connecting portion 414 is used for connecting the coupling element 42. In this embodiment, the adjusting portion 411, the inserting portion 412, the limiting portion 413 and the connecting portion 414 are coaxially connected in sequence, so that the structure is simple and the forming is convenient.
Preferably, the adjusting portion 411, the inserting portion 412, the limiting portion 413 and the connecting portion 414 are integrally formed, and if the adjusting portion 411, the inserting portion 412, the limiting portion 413 and the connecting portion 414 are integrally formed by using the same plastic, the structure is simplified, and the cost is saved.
In an embodiment, referring to fig. 2, 4, 6 and 8, the adjusting portion 411, the inserting portion 412, the limiting portion 413 and the connecting portion 414 are all cylindrical, an outer diameter of the adjusting portion 411 is larger than an outer diameter of the inserting portion 412, an outer diameter of the limiting portion 413 is larger than an outer diameter of the inserting portion 412, and an outer diameter of the limiting portion 413 is larger than an outer diameter of the connecting portion 414. In this embodiment, the outer diameters of the adjusting portion 411 and the limiting portion 413 are both larger than the outer diameter of the inserting portion 412, so as to limit the plastic support 41 in the axial direction, and prevent the inserting portion 412 from sliding out of the cover plate 20. The outer diameter of the limiting part 413 is larger than that of the connecting part 414, so that the material cost can be saved.
In one embodiment, referring to fig. 1, a through hole 201 is formed in the cover plate 20 along a thickness direction thereof, and the insertion portion 412 is inserted into the through hole 201. In this embodiment, the insertion part 412 has elasticity and is inserted into the through hole 201, and when an external force acts on the adjusting groove 410, the insertion part can rotate relative to the cover plate 20 to drive the coupling element 42 to rotate. The inner wall of the through hole 201 is smooth, and burrs and chips are not generated when the insertion part 412 is matched with the through hole 201. Preferably, the through hole 201 is a counterbore.
In one embodiment, the insertion portion 412 is in interference fit with the through hole 201. In another embodiment, after the adjustment of the coupling adjustment structure 40 is completed, the insertion part 412 is fixed in the through hole 201 by a dispensing process. In another embodiment, when the coupling adjustment structure 40 is adjusted, the insertion part 412 is fixed in the through hole 201 by an ultrasonic welding process.
In an embodiment, referring to fig. 2, 4, 6 and 8, a chamfer 417 is formed at an end of the adjusting portion 411 close to one end of the adjusting slot 410. In the present embodiment, the burrs are reduced by forming the chamfer 417.
In one embodiment, referring to fig. 2, 4, 6 and 8, the connecting portion 414 includes a first connecting section 415 and a second connecting section 416 that are coaxially connected. The first connecting section 415 is coaxially connected to the position-limiting portion 413, the second connecting section 416 is connected to the coupling element 42, and an outer diameter of the second connecting section 416 is larger than an outer diameter of the first connecting section 415. In this embodiment, the second connection section 416 has an outer diameter greater than the outer diameter of the first connection section 415 to facilitate positioning of the coupling element 42 and thus assembly of the coupling element 42.
Referring to fig. 2 and 3, there is shown a structure diagram of a plastic support 41 according to a first embodiment of the present invention. In this embodiment, the adjustment groove 410 is a straight groove.
Referring to fig. 4 and 5, a structure diagram of a plastic support 41 according to a second embodiment of the present invention is shown. In the present embodiment, the adjustment groove 410 is a cross groove.
Referring to fig. 6 and 7, there is shown a structure diagram of a plastic support 41 according to a third embodiment of the present invention. In the present embodiment, the adjustment groove 410 is an outer hexagonal cross groove.
Referring to fig. 8 and 9, there is shown a structure view of a plastic support 41 according to a fourth embodiment of the present invention. In the present embodiment, the adjustment groove 410 is an inner hexagonal quincuncial groove.
It will be appreciated that in other embodiments, the shape of the adjustment slot 410 of the plastic support 41 may be other than the above-described shape.
The embodiment of the utility model also provides communication equipment, which comprises at least one filter.
It is to be understood that the filter provided in the above embodiments may be applied to a communication system, such as a communication device (e.g., a base station or a terminal), and may also be applied to a radar system, which may not be limited herein.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A coupling adjustment structure for a filter, the coupling adjustment structure comprising:
the plastic support is rotatably connected to the cover plate of the filter; and
the coupling piece is arranged in a cavity of the filter and is coaxially connected with the plastic supporting piece, a coupling window is arranged in the cavity, and the coupling piece is arranged at the coupling window and is positioned between the two resonant tubes of the filter;
the end face of one end, far away from the coupling piece, of the plastic support piece is provided with an adjusting groove, and the adjusting groove is used for supplying external force to rotate the plastic support piece and drive the coupling piece to rotate so as to adjust the coupling amount between the resonance tubes.
2. The coupling adjustment structure of claim 1, wherein the plastic support comprises:
the end surface of one end of the adjusting part, which is far away from the coupling piece, is provided with the adjusting groove;
the inserting part is coaxially connected with one end of the adjusting part, which is far away from the adjusting groove, and the inserting part is inserted on the cover plate;
the limiting part is coaxially connected with one end of the inserting part, which is far away from the adjusting part; and
the connecting part is coaxially connected with one end, far away from the inserting part, of the limiting part and is used for being connected with the coupling piece.
3. The coupling adjustment structure of claim 2, wherein an outer diameter of the adjustment portion is larger than an outer diameter of the insertion portion, an outer diameter of the limit portion is larger than an outer diameter of the insertion portion, and an outer diameter of the limit portion is also larger than an outer diameter of the connection portion.
4. The coupling adjustment structure of claim 3, wherein the cover plate is formed with a through hole along a thickness direction thereof, and the insertion part is inserted into the through hole.
5. The coupling adjustment structure of claim 4, wherein the insertion part is in interference fit with the through hole; or the inserting part is fixed in the through hole through dispensing; or the inserting part is fixed in the through hole through ultrasonic welding.
6. The coupling adjustment structure of claim 2, wherein an end of the adjustment portion adjacent to the adjustment groove is chamfered.
7. The coupling adjustment structure of claim 2, wherein the connection portion comprises coaxially connected:
the first connecting section is coaxially connected with the limiting part; and
a second connection section connected with the coupling member, the second connection section having an outer diameter smaller than that of the first connection section.
8. The coupling adjustment structure according to any one of claims 1 to 7, wherein the adjustment groove is a cross groove, a straight groove, an outer hexagonal cross groove, or an inner hexagonal quincunx groove.
9. A filter, comprising:
a cavity having an open end;
the cover plate covers the opening end and is connected with the cavity;
at least two resonator tubes located within the cavity; and
the coupling adjustment structure of any one of claims 1 to 8.
10. A communication device comprising at least one filter according to claim 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122328284.5U CN215771502U (en) | 2021-09-24 | 2021-09-24 | Coupling adjusting structure, filter and communication equipment |
| PCT/CN2021/125755 WO2023279576A1 (en) | 2021-07-08 | 2021-10-22 | Coupling adjustment mechanism, filter, duplexer, multiplexer, and communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122328284.5U CN215771502U (en) | 2021-09-24 | 2021-09-24 | Coupling adjusting structure, filter and communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215771502U true CN215771502U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122328284.5U Active CN215771502U (en) | 2021-07-08 | 2021-09-24 | Coupling adjusting structure, filter and communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215771502U (en) |
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2021
- 2021-09-24 CN CN202122328284.5U patent/CN215771502U/en active Active
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