CN106785275B - Double-layer cavity combiner and public port device thereof - Google Patents
Double-layer cavity combiner and public port device thereof Download PDFInfo
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- CN106785275B CN106785275B CN201710086593.1A CN201710086593A CN106785275B CN 106785275 B CN106785275 B CN 106785275B CN 201710086593 A CN201710086593 A CN 201710086593A CN 106785275 B CN106785275 B CN 106785275B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
Abstract
The invention discloses a double-layer cavity combiner and a public port device thereof. The shell is provided with a public joint hole connected with a public joint, one side of the first partition board facing the public joint hole is concavely provided with a coupling window, the first partition board, the second partition board, the first resonance column, the second resonance column or the third resonance column are provided with coupling holes, one end of the coupling rod is used for being connected with the public joint, and the other end of the coupling rod is inserted into the coupling hole. The invention can realize the port bandwidth allocation of the upper and lower double-layer three-way channels at the same time only by inserting one rod into the coupling, which leads the double-layer structure form to have wider application in the modern mobile communication system. In addition, the invention omits a common resonant cavity required by the traditional structural design and has the characteristics of small insertion loss, small volume, convenient processing, low processing cost and the like.
Description
Technical Field
The invention relates to the technical field of communication equipment, in particular to a double-layer cavity combiner and a public port device thereof.
Background
In modern mobile communication technology, microwave devices formed by microwave filters have become an indispensable important component. The microwave cavity combiner is composed of multiple filters, and when the pass band is large, a double-layer cavity distribution mode is adopted, so that miniaturization of the device is facilitated. The current commonly used double-layer cavity combiner is only used for realizing the combination of two filter paths at an upper layer and a lower layer, and when the combination of three filter paths needs to be realized, the three filter paths are directly connected with a public port and a coupling rod by using tap metal wires, so that three welding spots appear on the public port and the coupling rod, and the intermodulation index of the combiner is greatly deteriorated; or an additional common resonant cavity is added in one layer to combine two paths, so that the combination of the upper and lower double-layer three paths can be realized, the number of resonant cavities can be increased due to the design, the insertion loss and the manufacturing cost are increased, and the miniaturization of devices cannot be further realized.
Disclosure of Invention
Based on the above, the invention aims to overcome the defects of the prior art, and provides a double-layer cavity combiner and a public port device thereof.
The technical scheme is as follows:
a public port device of a double-layer cavity combiner comprises a shell, a first partition plate, a second partition plate, a first resonance column, a second resonance column, a third resonance column and a coupling rod, wherein the first partition plate is located in the shell and used for separating an inner cavity of the shell into a first layer cavity and a second layer cavity, the second partition plate is located on the first partition plate and used for separating the first layer cavity into a first head cavity and a second head cavity, the second partition plate is arranged along the insertion direction of the coupling rod, the first resonance column is located in the first head cavity, the second resonance column is located in the second head cavity, the third resonance column is located in the second layer cavity, a public joint hole used for connecting a public joint is formed in the shell, a coupling window is concavely arranged on one side of the first partition plate facing the public joint hole, the first head cavity, the second resonance column is located in the second head cavity, a coupling window is concavely arranged on one side of the first partition plate facing the public joint hole, and, The first cavity of the second and the second layer cavity are communicated with the coupling window, the first partition board, the second partition board, the first resonance column, the second resonance column or the third resonance column are provided with coupling holes, one end of the coupling rod is connected with a public joint, the other end of the coupling rod is inserted into the coupling holes, signals are transmitted to the coupling rod through the public joint, and then finally radiated to the first cavity, the second cavity and the second layer cavity after passing through the coupling holes and the coupling window, so that the distribution of the bandwidth of the three-way port on the upper side and the lower side of the double-layer cavity is realized.
In one embodiment, the third resonant column includes a column base disposed on the first partition plate and a resonant column body disposed on the column base, and the column base is provided with the coupling hole.
In one embodiment, the coupling aperture is disposed opposite the common connector aperture.
In one embodiment, the coupling rod further comprises a medium sleeve sleeved on the coupling rod, and the medium sleeve is positioned in the coupling hole.
In one embodiment, a gap is provided between a side of the second partition plate facing the common joint hole and the housing.
In one embodiment, the coupling rod includes a first-stage rod inserted into the coupling hole and a second-stage rod for connection with a common joint, the first-stage rod having a diameter greater than that of the second-stage rod.
In one embodiment, the coupling rod includes a first-stage rod inserted into the coupling hole and a second-stage rod for connection with a common joint, the first-stage rod having a diameter smaller than that of the second-stage rod.
In one embodiment, the coupling window comprises a first window which is butted with the first head cavity and a second window which is butted with the second head cavity, and an expansion opening is concavely arranged at the bottom of the first window.
In one embodiment, the coupling window comprises a first window which is butted with the first head cavity and a second window which is butted with the second head cavity, and an expansion opening is concavely arranged at the bottom of the second window.
The technical scheme also provides a double-layer cavity combiner which comprises the public port device.
The advantages or principles of the foregoing technical solution are explained below:
the public port device of the double-layer cavity combiner divides the inner cavity of the shell into an upper layer and a lower layer through the first partition plate, and then divides the first layer cavity into a first head cavity of the first filtering channel and a second head cavity of the second filtering channel through the second partition plate, and the second layer cavity can form a third head cavity of the third filtering channel. Meanwhile, the first partition plate is provided with a coupling window, the coupling window enables the first layer cavity and the second layer cavity to be in butt joint communication, and enables the first head cavity and the second head cavity to be in butt joint communication. According to the invention, coupling holes are formed in the first partition plate, the second partition plate, the first resonance column, the second resonance column or the third resonance column, and coupling rods connected with a common joint are arranged in the coupling holes. Electromagnetic field energy finally radiates to the three first cavities after passing through the public joint, the coupling rod, the coupling hole and the coupling window, and therefore the bandwidth distribution of the upper filtering access port and the lower filtering access port is achieved. The public port device can realize the port bandwidth allocation of the upper and lower double-layer three-way channels simultaneously only by inserting and coupling one rod, so that the double-layer structure form is more widely applied to the modern mobile communication system; meanwhile, the invention omits a common resonant cavity required by the traditional structural design, and has the characteristics of small insertion loss, small volume, convenient processing, low processing cost and the like; in addition, the invention does not need to adopt a tapping metal wire connection mode, so that the whole public port device has no welding spot, thereby reducing the nonlinear factor of the public port device.
Drawings
FIG. 1 is a partial cross-sectional view of a common port apparatus according to an embodiment of the present invention;
FIG. 2 is a longitudinal cross-sectional view of a common port apparatus according to an embodiment of the present invention;
FIG. 3 is a top view of a common port apparatus according to an embodiment of the present invention;
FIG. 4 is a bottom view of a common port apparatus according to an embodiment of the present invention.
Description of reference numerals:
100. the first cavity is formed by a common joint 200, a shell 210, a first cavity 220, a second first cavity 230, a third first cavity 240, a common joint hole 300, a first partition plate 310, a coupling window 311, a first window 312, a second window 400, a second partition plate 500, a first resonant column 600, a second resonant column 700, a third resonant column 710, a column base 711, a coupling hole 720, a resonant column body 800 and a coupling rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "coupled" to another element, it can be directly coupled to the other element or be coupled to the other element through intervening elements. The "electrical connection" described herein may be referred to as a "wired connection" or a "wireless connection". In addition, unless otherwise specified, the terms "first" and "second" and the like in the description are used for distinguishing various components, elements, steps and the like in the description, and are not used for representing logical relationships or sequential relationships among the various components, elements, steps and the like.
As shown in fig. 1 and 2, the common port apparatus of the dual-cavity combiner according to the present invention includes a housing 200, a first partition 300, a second partition 400, a first resonant column 500, a second resonant column 600, a third resonant column 700, and a coupling rod 800. The first partition 300 is located in the housing 200 to partition the inner cavity of the housing 200 into a first-layer cavity and a second-layer cavity, the second partition 400 stands on the first partition 300 to partition the first-layer cavity into a first head cavity 210 and a second head cavity 220, and the second-layer cavity is a third head cavity 230. The first resonant beam 500, the second resonant beam 600, and the third resonant beam 700 are respectively located in the first head cavity 210, the second head cavity 220, and the third head cavity 230. Specifically, the first resonant column 500 and the second resonant column 600 shown in the drawing of the present embodiment are respectively disposed on the upper surface of the first partition 300, and the third resonant column 700 is disposed on the lower surface of the first partition 300.
The housing 200 is formed with a common connector hole 240 for connecting the common connector 100, and a coupling window 310 is formed at a side of the first partition 300 facing the common connector hole 240. The coupling window 310 is in communication with the first head chamber 210, the second head chamber 220, and the third head chamber 230. Specifically, as shown in fig. 1, the coupling window 310 extends up and down to the first and second cavity layers and extends left and right to the first and second head cavities 210 and 220. A coupling hole 711 may be formed at a side of the first spacer 300, the second spacer 400, the first resonant column 500, the second resonant column 600, or the third resonant column 700 facing the common junction hole 240, and the coupling hole 711 may be disposed opposite to the common junction hole 240. The coupling rod 800 has one end communicating with the common junction 100 at the common junction hole 240 and the other end inserted into the coupling hole 711. The signal is transmitted to the coupling rod 800 by the common connector 100, and finally radiated to the first head cavity 210, the second head cavity 220, and the third head cavity 230 after passing through the coupling hole 711 and the coupling window 310.
The working principle of the above technical solution is explained as follows: in the common port device of the present invention, the inner cavity of the housing 200 is divided into an upper layer and a lower layer by the first partition 300, and the first layer of cavity is divided into the first cavity 210 of the first filter path and the second first cavity 220 of the second filter path by the second partition 400, and the second layer of cavity can form the third first cavity 230 of the third filter path. Meanwhile, the first partition 300 according to the present invention is provided with a coupling window 310, and the coupling window 310 connects the first-layer cavity and the second-layer cavity in a butt joint manner, and connects the first head cavity 210 and the second head cavity 220 in a butt joint manner. In the present invention, a coupling hole 711 is formed in one of the first spacer 300, the second spacer 400, the first resonant column 500, the second resonant column 600, or the third resonant column 700, and a coupling rod 800 connected to a common connector 100 is disposed in the coupling hole 711. Electromagnetic field energy finally radiates into three first cavities after passing through a common port (the common port is formed by a common joint hole 240 and a common joint 100), a coupling rod 800, a coupling hole 711 and a coupling window 310, and then the bandwidth distribution of the upper filter path port and the bandwidth distribution of the lower filter path port are realized. The public port device can realize the port bandwidth allocation of the upper and lower double-layer three-way channels simultaneously only by inserting and coupling one rod, so that the double-layer structure form is more widely applied to the modern mobile communication system; meanwhile, the invention omits a common resonant cavity required by the traditional structural design, and has the characteristics of small insertion loss, small volume, convenient processing, low processing cost and the like; in addition, the invention does not need to adopt a tapping metal wire connection mode, so that the whole public port device has no welding spot, thereby reducing the nonlinear factor of the public port device.
In this embodiment, the coupling hole 711 is preferably opened on the third resonant column 700. Specifically, the third resonant column 700 includes a pillar 710 disposed on the first partition 300 and a resonant column body 720 disposed on the pillar 710, and the pillar 710 has the coupling hole 711. The first resonant column 500 and the second resonant column 600 may have the same structure as the third resonant column 700, that is, may include a pillar stand and a resonant column body structure. The invention makes full use of the physical structure of the resonance column, so that the arrangement of the coupling hole 711 in the public port device is reasonable and effective, and the device characteristics are not influenced. Since the thickness of the first and second partitions 300 and 400 needs to be designed to be sufficiently thick when the coupling hole 711 is opened in the first and second partitions 300 and 400, and the excessively thick second partition 400 affects the frequency allocation of the first and second head cavities 210 and 220, the present invention preferentially places the coupling hole 711 on the pedestal 710 of the resonant column. When the coupling rod 800 is inserted into the third resonant beam 700, electromagnetic field energy is radiated onto the third resonant beam 700, i.e., into the third primary cavity 230, and then is re-radiated to the first resonant beam 500 of the first primary cavity 210 and the second resonant beam 600 of the second primary cavity 220 via the coupling window 310. In this embodiment, the housing 200, the first partition 300, the second partition 400, and the pylons 710 of the resonant columns may be integrally formed, so as to simplify the manufacturing of the whole device.
It should be noted that a gap is provided between a side of the second partition 400 facing the common joint hole 240 and the housing 200 to ensure better coupling among the first head chamber 210, the second head chamber 220 and the third head chamber 230. It should be noted that, in one embodiment, when the coupling hole 711 is disposed on a side of the second partition 400 facing the common joint hole 240, a gap is required between the second partition 400 and the housing 200 to ensure that electromagnetic field energy can be radiated from the coupling hole 711 to the first head cavity 210, the second head cavity 220, and the third head cavity 230.
In this embodiment, the coupling bar 800 is a stepped bar including a first-stage bar extending into the coupling hole 711 and a second-stage bar for connection with the common junction 100. The diameter of the first stage rod is greater than the diameter of the second stage rod, or the diameter of the first stage rod is less than the diameter of the second stage rod. The diameter of the first-stage rod can be set according to the standard size or the universal size of the coupling hole 711, namely the diameter of the first-stage rod is matched with the inner diameter of the coupling hole 711; the diameter of the second-stage rod can be set by the size of the bandwidth and the impedance characteristics to be tolerated, and thus the coupling rod 800 can be designed as a stepped rod. It should be noted that, those skilled in the art can also design the coupling rod 800 into a straight rod-like structure according to actual needs. The present invention further includes a dielectric sleeve (not shown) sleeved on the coupling rod 800, and the dielectric sleeve is located in the coupling hole 711. The dielectric sleeve is configured to secure the coupling rod 800 and prevent the coupling rod 800 from electrically shorting to the pylon 710.
The public port device can realize the bandwidth distribution adjustment of the upper and lower passage ports by adjusting the position of the coupling hole 711. As shown in fig. 2, the coupling hole 711 may move up or down with reference to the first barrier 300 during a practical design process. When the common junction 100 and the coupling bar 800 are placed at a lower level with respect to the first barrier 300 and moved downward, that is, the coupling hole 711 is located below the first barrier 300, the bandwidth allocation of the second-level cavity (third header cavity 230) is increased. Conversely, when the common junction 100 and the coupling rod 800 are moved upward, such as onto the second baffle 400, the bandwidth allocation of the second tier cavity is reduced. The upper two-way and lower way bandwidth allocation is achieved by adjusting the height of the common junction 100 and the coupling rod 800.
Since electromagnetic field energy is generally concentrated between the coupling rod 800 and the coupling hole 711, the length of the dielectric sleeve of the gap between the coupling rod 800 and the coupling hole 711 or the dielectric constant of the dielectric sleeve can be adjusted to adjust the port bandwidths of the upper two filter paths (the first filter path and the second filter path) and the lower filter path (the third filter path). In addition, the port bandwidths of the upper two filter paths and the lower filter path can also be adjusted by adjusting the depth of the coupling rod 800 entering the coupling hole 711.
Increasing or decreasing the area of one side of the coupling window 310 adjusts the bandwidth allocation of the two filter paths in the upper layer when the common junction 100 and the coupling rod 800 are in the lower layer biased to be planar with the first partition 300. Referring to fig. 3, when the first window 311 (i.e. the coupling window 310 at one side of the first resonant column 500) is enlarged, the bandwidth of the first filter path of the first resonant column 500 is increased, and the bottom of the first window 311 may be further recessed with an expanded port 3111 for increasing the area of the first window 311, as shown in fig. 1 and 3; similarly, when the second window 312 (i.e. the coupling window 310 on one side of the second resonant column 600) is enlarged, the bandwidth of the second filter path in which the second resonant column 600 is located is increased, and another expansion opening (not shown in the drawings) is further recessed at the bottom of the second window 312 to increase the area of the second window 312. On the contrary, when the first window 311 is reduced, the bandwidth of the first filter path where the first resonant column 500 is located is reduced, and the present invention can increase the filler and the like in the first window 311 according to the actual requirement to reduce the area of the first window 311; similarly, when the second window 312 is reduced, the bandwidth of the second filter path where the second resonant column 600 is located is reduced, and the present invention may add a filler or the like in the second window 312 to reduce the area of the second window 312 according to actual needs. In addition, referring to fig. 4, when the diameter of the third resonant beam 700 (the beam 710 and the resonant beam body 720) is increased (the area facing the inner wall of the housing 200 is increased) or approaches the inner wall of the housing 200, the bandwidth allocation of the lower layer is increased; similarly, when the diameters of the first resonant column 500 and the second resonant column 600 are increased or are close to the inner wall of the housing 200, the bandwidth allocation of the upper two filter paths is increased. Conversely, when the third resonant column 700 decreases in diameter or moves away from the inner wall of the housing 200, the lower bandwidth allocation is reduced; also, when the first and second resonant columns 500 and 600 are reduced in diameter or are spaced apart from the inner wall of the case 200, the bandwidth allocation of the upper two filter paths is reduced.
The present invention also provides a dual-cavity combiner comprising the above-described common port device, a common junction 100, and one, two, or three branch junctions (not shown in the drawings). When the number of the branch joints is three, each branch joint corresponds to one head cavity and is electrically connected with the head cavity; when the number of the branch joints is two, the energy of the two first cavities is converged and then electrically connected with one of the branch joints, and the other first cavity is electrically connected with the other branch joint; when the branch joint is one, the energy of the three first cavities is converged and then communicated with the branch joint. The common terminal, the branch terminal, and the like according to the present invention may be a terminal rod, a lead, or the like.
In summary, the present invention realizes the allocation of the bandwidths of the upper and lower three filtering path ports by inserting the coupling rod 800 into the coupling hole 711, which will make the double-layer structure form have wider application in modern mobile communication systems. The public connector 100 and the coupling rod 800 are directly assembled without being welded with the cavity resonance column, and a tapping metal wire connection mode is not adopted in the invention, so that the whole public port device has no welding spot, the assembly difficulty is reduced, and the non-linear factor of the public port device is also reduced. In addition, the invention can realize the required port bandwidth under the condition of not increasing the common resonant cavity, and has the characteristics of small insertion loss, small volume, convenient processing, low processing cost and the like compared with the existing combiner of the common resonant cavity. In conclusion, the invention has the advantages of simple structure, easy assembly, low material cost, good reliability and stability, wide applicability, effective saving of production cost, improvement of product quality and enhancement of market competitiveness.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A public port device of a double-layer cavity combiner is characterized by comprising a shell, a first partition plate, a second partition plate, a first resonance column, a second resonance column, a third resonance column and a coupling rod, wherein the first partition plate is positioned in the shell and used for dividing an inner cavity of the shell into a first layer cavity and a second layer cavity, the second partition plate is erected on the first partition plate and used for dividing the first layer cavity into a first head cavity and a second head cavity, the second partition plate is arranged along the insertion direction of the coupling rod, the first resonance column is positioned in the first head cavity, the second resonance column is positioned in the second head cavity, the third resonance column is positioned in the second layer cavity, a public joint hole used for connecting a public joint is formed in the shell, a coupling window is concavely arranged on one side of the first partition plate facing the public joint hole, the first head cavity, the second head cavity and the second layer cavity are all communicated with the coupling window, coupling holes are formed in the first partition plate, the second partition plate, the first resonance column, the second resonance column or the third resonance column, one end of the coupling rod is used for being connected with a common joint, and the other end of the coupling rod is inserted into the coupling holes; signals are transmitted to the coupling rod through the common joint, and finally radiated to the first head cavity, the second head cavity and the second layer cavity after passing through the coupling hole and the coupling window, so that the bandwidth distribution of the upper and lower three-way ports of the double-layer cavity is realized.
2. The common port device of the dual-cavity combiner of claim 1, wherein the third resonant pillar comprises a pillar stand disposed on the first partition and a resonant pillar body disposed on the pillar stand, the pillar stand having the coupling hole formed therein.
3. The common port device of a dual-layer cavity combiner of claim 1, wherein the coupling aperture is disposed opposite the common junction aperture.
4. The common port device of a dual-cavity combiner of claim 1, further comprising a dielectric sleeve disposed over said coupling rod, said dielectric sleeve being disposed within said coupling aperture.
5. The common port device of a dual-cavity combiner of claim 1, wherein a gap is provided between a side of the second partition facing the common junction aperture and the housing.
6. The common port device of the dual-layer cavity combiner of any one of claims 1 to 5, wherein the coupling rod includes a first-stage rod inserted into the coupling hole and a second-stage rod for connection with a common junction, the first-stage rod having a diameter greater than a diameter of the second-stage rod.
7. The common port device of the dual-layer cavity combiner of any one of claims 1 to 5, wherein the coupling rod includes a first-stage rod inserted into the coupling hole and a second-stage rod for connection with a common junction, the first-stage rod having a diameter smaller than a diameter of the second-stage rod.
8. The common port device of a dual-layer cavity combiner of any one of claims 1-5, wherein the coupling window comprises a first window interfacing with the first stub cavity and a second window interfacing with the second stub cavity, a bottom of the first window being recessed with an expanded port.
9. The common port device of a dual-layer cavity combiner of any one of claims 1-5, wherein the coupling window comprises a first window interfacing with the first stub cavity and a second window interfacing with the second stub cavity, a bottom of the second window being recessed with an expanded port.
10. A dual-layer cavity combiner comprising the common port apparatus of any of claims 1-9.
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| CN201710086593.1A CN106785275B (en) | 2017-02-17 | 2017-02-17 | Double-layer cavity combiner and public port device thereof |
| PCT/CN2017/119468 WO2018149236A1 (en) | 2017-02-17 | 2017-12-28 | Double-layer cavity combiner and public port device thereof |
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| CN201710086593.1A CN106785275B (en) | 2017-02-17 | 2017-02-17 | Double-layer cavity combiner and public port device thereof |
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| CN203013895U (en) * | 2012-11-23 | 2013-06-19 | 京信通信系统（中国）有限公司 | Three-way cavity device and port combiner structure thereof |
| CN103151589A (en) * | 2013-03-05 | 2013-06-12 | 京信通信系统（中国）有限公司 | Combining-dividing structure of cavity radio frequency device and cavity radio frequency device adopting same |
| CN105514532A (en) * | 2016-01-25 | 2016-04-20 | 京信通信系统（中国）有限公司 | Coupling structure |
| CN106058402A (en) * | 2016-08-05 | 2016-10-26 | 京信通信技术(广州)有限公司 | Double layer cavity combiner and a common port coupling device thereof |
| CN206480739U (en) * | 2017-02-17 | 2017-09-08 | 京信通信系统（中国）有限公司 | Double-deck chamber combiner and its public port device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106785275A (en) | 2017-05-31 |
| WO2018149236A1 (en) | 2018-08-23 |
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Effective date of registration: 20200110 Address after: 510730 Guangdong city of Guangzhou province Guangzhou economic and Technological Development Zone Jinbi Road No. 6 Applicant after: Jingxin Communication Technology (Guangzhou) Co., Ltd. Address before: 510663 Luogang District Science City, Guangzhou, Shenzhou Road, No. 10, Guangdong Applicant before: Jingxin Communication System (China) Co., Ltd. Applicant before: Jingxin Communication Technology (Guangzhou) Co., Ltd. Applicant before: Jingxin Communication System (Guangzhou) Co., Ltd. Applicant before: TIANJIN COMBA TELECOM SYSTEMS CO., LTD. |
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