CN112688039A - Cavity filter, resonance rod, flying rod and communication equipment - Google Patents
Cavity filter, resonance rod, flying rod and communication equipment Download PDFInfo
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- CN112688039A CN112688039A CN201910996004.2A CN201910996004A CN112688039A CN 112688039 A CN112688039 A CN 112688039A CN 201910996004 A CN201910996004 A CN 201910996004A CN 112688039 A CN112688039 A CN 112688039A
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- 238000004891 communication Methods 0.000 title claims abstract description 24
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000006880 cross-coupling reaction Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 3
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention provides a cavity filter, a resonant rod, a flying rod and communication equipment, wherein the cavity filter comprises a cavity, the resonant rod and the flying rod, and the resonant rod is arranged in the cavity; the flying rod is fixedly connected through the resonant rod and then assembled in the cavity. In the cavity filter, the resonant rod, the flying rod and the communication equipment, the flying rod is not fixedly assembled by relying on a clamping groove and a clamping seat structure specially designed in the cavity, the manufacturing of the cavity is greatly simplified, the production cost of a product is reduced, meanwhile, the flying rod is fixedly connected through the resonant rod, the relative position of the end part of the flying rod and the resonant rod can be ensured, and good cross coupling is realized.
Description
Technical Field
The invention relates to the field of communication, in particular to a cavity filter, a resonant rod, a flying rod and communication equipment comprising the cavity filter.
Background
In a base station system for mobile communication, communication signals carrying communication data in a specific frequency range are generally transmitted through a transmitting antenna, and the communication signals are received through a receiving antenna. The signal received by the receiving antenna contains not only the communication signal carrying the communication data within the specific frequency range, but also a number of spurious or interfering signals outside the specific frequency range. To obtain a communication signal carrying communication data in a specific frequency range transmitted by a transmitting antenna from a signal received by a receiving antenna, the signal received by the receiving antenna is usually filtered by a cavity filter, so as to filter out noise or interference signals outside the specific frequency of the communication signal carrying communication data.
The cavity filter is widely used as a frequency selection device. In the prior art, the cavity filter comprises a box body, a cover plate and a resonance rod, wherein the cover plate covers the box body, a plurality of resonant cavities are formed by partition plates arranged in the box body, and the resonance rod is fixed on the bottom surface of the cavity through screws. The method is generally to arrange a flying rod between two non-adjacent resonant cavities to realize cross coupling so as to perform out-of-band rejection on clutter outside a passband of a cavity filter.
The current flying bar sets up through forming the draw-in groove on the baffle in the cavity to fixing the middle zone of flying bar through the cassette that matches with the draw-in groove and making the both ends of flying bar hang and establish and be close to the resonance bar, in this mode of setting, the flying bar relies on the draw-in groove and the cassette assembly of special design in the cavity, makes the manufacturing and the assembly of cavity complicated, and because the error of draw-in groove design can lead to the tip of flying bar and the relative position of resonance bar to take place great deviation, be unfavorable for realizing good cross coupling.
Disclosure of Invention
The invention provides a cavity filter, a resonant rod, a flying rod and communication equipment comprising the cavity filter, and aims to solve the technical problem that in the prior art, the flying rod is assembled by a clamping groove and a clamping seat specially designed in a cavity, so that the manufacturing and the assembly of the cavity are complicated.
In order to solve the technical problems, the invention adopts a technical scheme that: there is provided a cavity filter comprising:
a cavity;
the resonance rod is arranged in the cavity;
and the flying rod is fixedly connected with the resonant rod and then assembled in the cavity.
According to an embodiment of the present invention, the cavity filter further includes an insulating spacer interposed between the resonant rod and the flying rod.
According to an embodiment of the present invention, the cavity filter includes an insulating screw, and the insulating screw fixedly connects the flying bar and the resonant bar.
According to an embodiment of the invention, the flying bar comprises a main body bar and a connecting plate arranged at the end part of the main body bar, wherein a first connecting hole is formed in the connecting plate.
According to an embodiment of the present invention, the connecting plate is connected to the main rod in a T-shape.
According to an embodiment of the present invention, the resonance rod includes a tube body and a flange portion disposed at one end of the tube body, and the flange portion is provided with a second connection hole.
According to an embodiment of the present invention, the resonant rod further includes a folded portion connected to an outer edge of the flange portion, and the folded portion is provided with a notch portion to accommodate the flying rod.
In order to solve the technical problem, the invention adopts another technical scheme that: the flying bar is provided with a first connecting hole used for being connected with a resonance bar of the cavity filter.
In order to solve the technical problem, the invention adopts another technical scheme that: the utility model provides a resonance bar for cavity filter, be equipped with on the resonance bar and be used for the second connecting hole that the pole that flies of cavity filter connects.
In order to solve the technical problem, the invention adopts another technical scheme that: a communication device is provided, which includes the cavity filter, and the communication device is at least one of a duplexer, a simplex, a splitter, a combiner, or a tower top amplifier.
In the cavity filter, the resonant rod, the flying rod and the communication equipment, the flying rod is not fixedly assembled by relying on a clamping groove and a clamping seat structure specially designed in the cavity, the manufacturing and the assembling of the cavity are greatly simplified, the production cost of a product is reduced, meanwhile, the flying rod is fixedly connected through the resonant rod, the relative position of the end part of the flying rod and the resonant rod can be ensured, and good cross coupling is realized.
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 description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a schematic partial perspective view of a cavity filter according to an embodiment of the present invention;
fig. 2 is a partial sectional structural view of the cavity filter shown in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic partial perspective view of a cavity filter according to an embodiment of the present invention; fig. 2 is a partial sectional structural view of the cavity filter shown in fig. 1.
An embodiment of the present invention provides a cavity filter, which includes a cavity (not shown), a resonant rod 100, a flying rod 200, an insulating spacer 300, and a rim screw 400.
The cavity provided by the embodiment of the invention does not need to be provided with a clamping groove, and does not need to be provided with a clamping seat corresponding to the clamping groove to fix the flying bar 200, so that the cavity is relatively simpler to process.
The resonant rod 100 is disposed in the cavity, the resonant rod 100 may be disposed in the cavity in a manner of being fixed by screws, or the resonant rod 100 may be disposed in the cavity in a manner of being fixed by welding, or the resonant rod 100 may be disposed in the cavity in a manner of being integrally formed, and the resonant rod 100 is generally in a hollow tubular shape and is configured to receive a tuning screw (not shown) penetrating through the cavity and extend into the hollow tubular shape to adjust the radio frequency parameters. As the cavity filter is a mature prior art, the content that does not relate to the invention point can refer to the prior art, and is not described in detail in this application.
In the embodiment of the present invention, the flying bar 200 is fixedly connected to the resonant bar 100 and then assembled in the cavity, the insulating spacer 300 is interposed between the resonant bar 100 and the flying bar 200, and the insulating screw 400 fixedly connects the flying bar 200 to the resonant bar 100.
The thickness of the insulating spacer 300 can be designed as required to ensure the relative position between the flying bar 200 and the resonant bar 100, and the accurate relative position between the flying bar 200 and the resonant bar 100 is favorable for achieving good cross coupling, for example, the thickness of the insulating spacer 300 is 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, etc.
Wherein, insulating screw 400 also can be insulating mounting such as insulating buckle, insulating rivet, and insulating screw 400 can be used alone or the cooperation nut of according to actual need uses.
In the embodiment of the present invention, the flying bar 200 is flat and made of metal material, for example, by stamping, which is relatively efficient.
In other embodiments, fly rod 200 may be cast or welded, and when cast or welded, the end of fly rod 200 may be shaped to match the curved surface or edge of resonant rod 100.
In an embodiment of the present invention, the flying bar 200 includes a main body bar 210 and a connection plate 220 disposed at an end of the main body bar 210, wherein the connection plate 220 is provided with a first connection hole (not numbered), and the first connection hole may be a threaded hole or a through hole.
The width dimension of the connecting plate 220 may be the same as or different from the width dimension of the main body bar 210, and when the width dimension of the connecting plate 220 is different from the width dimension of the main body bar 210, for example, the width dimension of the connecting plate 220 shown in fig. 1 is larger than the width dimension of the main body bar 210, the connecting plate 220 and the main body bar 210 may be connected in a T shape.
The flying bar 200 may have one end connected to one resonant bar 100 and the other end suspended and close to the other resonant bar 100, or both ends of the flying bar 200 are connected to two resonant bars 100, respectively, and when both ends of the flying bar 200 are connected to the resonant bars 100, the main body bar 210 and the connecting plates 220 disposed at both ends of the main body bar 210 may be connected in an "i" shape. The area of the connection plate 220 at both ends of the main body bar 210 may be relatively large in order to improve the cross-coupling performance.
The flying bar 200 may be connected to any position on the resonant rod 100 by an insulating screw 400, and the connection plate 220 may also have an arc shape matching with the arc surface or arc edge of the resonant rod 100 and connected by an insulating fixing member.
In an embodiment of the present invention, the resonant rod 100 includes a tubular body 110 and a flange 120 disposed at one end of the tubular body 110, and the flange 120 is provided with a second connecting hole (not numbered), which may be a threaded hole or a through hole. The flying bar 200 may be attached to the upper surface of the flange portion 120, or the flying bar 200 may be attached to the lower surface of the flange portion 120, or the flying bar 200 may be attached to the outer end surface of the flange portion 120, or the flying bar 200 may be attached to the outer circumferential surface of the pipe body 110.
In an embodiment of the present invention, the resonant rod 100 further includes a folded portion 130 connected to an outer edge of the flange portion 120, and the folded portion 130 is provided with a notch 132 to accommodate the flying bar 200.
Referring to fig. 1 and fig. 2, the embodiment of the invention further provides a flying bar 200 for a cavity filter, wherein the flying bar 200 is provided with a first connecting hole for connecting with the resonant bar 100 of the cavity filter, and the first connecting hole may be a threaded hole or a through hole.
With reference to fig. 1 and fig. 2, the embodiment of the present invention further provides a resonant rod 100 for a cavity filter, wherein the resonant rod 100 is provided with a second connection hole for connecting a flying bar 200 of the cavity filter, and the second connection hole may be at least one of a threaded hole or a through hole.
The embodiment of the invention also provides communication equipment, which comprises the cavity filter, wherein the communication equipment is a duplexer, a simplex, a splitter, a combiner or a tower top amplifier.
In the cavity filter, the resonant rod 100, the flying rod 200 and the communication equipment provided by the invention, the flying rod 200 is not required to be fixedly assembled by a clamping groove and a clamping seat structure specially designed in the cavity, the manufacturing of the cavity is greatly simplified, the production cost of a product is reduced, meanwhile, the flying rod 200 is fixedly connected through the resonant rod 100, the relative position of the end part of the flying rod 200 and the resonant rod 100 can be ensured, and good cross coupling is realized.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A cavity filter, comprising:
a cavity;
the resonance rod is arranged in the cavity;
and the flying rod is fixedly connected with the resonant rod and then assembled in the cavity.
2. The cavity filter of claim 1, further comprising an insulating spacer interposed between the resonant rod and the flying rod.
3. The cavity filter of claim 1, comprising an insulating screw that fixedly connects the flying bar to the resonating bar.
4. The cavity filter of claim 1, wherein the flying bar comprises a main bar and a connecting plate disposed at an end of the main bar, and the connecting plate is provided with a first connecting hole.
5. The cavity filter of claim 4, wherein the connection plate is T-shaped to the body rod.
6. The cavity filter according to claim 1, wherein the resonance rod comprises a body portion and a flange portion provided at one end of the body portion, the flange portion being provided with a second connection hole.
7. The cavity filter according to claim 6, wherein the resonant rod further comprises a folded-back portion connected to an outer edge of the flange portion, the folded-back portion being provided with a notch portion to receive the flying rod.
8. The flying bar for the cavity filter is characterized in that a first connecting hole used for being connected with a resonance bar of the cavity filter is formed in the flying bar.
9. The utility model provides a resonance bar for cavity filter which characterized in that, be equipped with on the resonance bar and be used for the second connecting hole that cavity filter's flying rod connects.
10. A communication device comprising the cavity filter of any one of claims 1-7, the communication device being at least one of a duplexer, a simplex, a splitter, a combiner, or a tower top amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910996004.2A CN112688039A (en) | 2019-10-18 | 2019-10-18 | Cavity filter, resonance rod, flying rod and communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910996004.2A CN112688039A (en) | 2019-10-18 | 2019-10-18 | Cavity filter, resonance rod, flying rod and communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112688039A true CN112688039A (en) | 2021-04-20 |
Family
ID=75445234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910996004.2A Pending CN112688039A (en) | 2019-10-18 | 2019-10-18 | Cavity filter, resonance rod, flying rod and communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112688039A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1427502A (en) * | 2001-12-17 | 2003-07-02 | 无线电射频***公司 | System for crossing coupling to resonator |
| CN202695684U (en) * | 2012-07-16 | 2013-01-23 | 苏州市大富通信技术有限公司 | Cavity filter |
| CN206098625U (en) * | 2016-09-07 | 2017-04-12 | 深圳市迈特通信设备有限公司 | Coaxial cavity filter inverse coupling structure |
| CN206098646U (en) * | 2016-09-13 | 2017-04-12 | 深圳市迈特通信设备有限公司 | Novel capacitive coupling structure |
| CN208208942U (en) * | 2018-06-08 | 2018-12-07 | 苏州艾通华通讯有限公司 | A kind of perception cross coupling structure |
| CN110098453A (en) * | 2018-01-31 | 2019-08-06 | 株式会社Kmw | Radio-frequency filter |
| CN209232920U (en) * | 2018-12-14 | 2019-08-09 | 深圳市大富科技股份有限公司 | A kind of cavity body filter and the communication device using it |
| CN211125952U (en) * | 2019-10-18 | 2020-07-28 | 深圳市大富科技股份有限公司 | Cavity filter and communication equipment |
-
2019
- 2019-10-18 CN CN201910996004.2A patent/CN112688039A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1427502A (en) * | 2001-12-17 | 2003-07-02 | 无线电射频***公司 | System for crossing coupling to resonator |
| CN202695684U (en) * | 2012-07-16 | 2013-01-23 | 苏州市大富通信技术有限公司 | Cavity filter |
| CN206098625U (en) * | 2016-09-07 | 2017-04-12 | 深圳市迈特通信设备有限公司 | Coaxial cavity filter inverse coupling structure |
| CN206098646U (en) * | 2016-09-13 | 2017-04-12 | 深圳市迈特通信设备有限公司 | Novel capacitive coupling structure |
| CN110098453A (en) * | 2018-01-31 | 2019-08-06 | 株式会社Kmw | Radio-frequency filter |
| CN208208942U (en) * | 2018-06-08 | 2018-12-07 | 苏州艾通华通讯有限公司 | A kind of perception cross coupling structure |
| CN209232920U (en) * | 2018-12-14 | 2019-08-09 | 深圳市大富科技股份有限公司 | A kind of cavity body filter and the communication device using it |
| CN211125952U (en) * | 2019-10-18 | 2020-07-28 | 深圳市大富科技股份有限公司 | Cavity filter and communication equipment |
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