Hybrid coupled combiner

Abstract

This application discloses a hybrid coupling combiner, belonging to the technical field of combiners. It includes a main body and a sealing assembly. The sealing assembly is located at the top of the main body and is detachable and installable from the main body via fasteners. The main body includes an outer shell and an inner shell. The inner shell is located inside the outer shell, and its top is detachable and installable from the sealing assembly. A resonator is disposed inside the inner shell, and a metal block is disposed at the top of the resonator. A tuning rod is disposed at the top of the metal block. Inductive coupling connecting ribs and a capacitive decoupling structure are mounted on the surface of the resonator. The beneficial effects of this application are: introducing a capacitive decoupling structure between adjacent resonators effectively eliminates excessive inductive coupling, increases the gap between resonators to provide strong capacitance, increases product manufacturability, and achieves a balance between electrical performance and machining.

Description

Technical Field

[0001] This application relates to the technical field of combiners, and in particular to a hybrid coupling combiner. Background Technology

[0002] Antenna combiners are essentially multi-signal combining devices built using comb-line cavity filters as their core units. They belong to the filter-type combiner category and are primarily designed to address the issue of multiple frequency signals sharing a single antenna and requiring high isolation in scenarios such as base stations and repeaters. Internally, they typically consist of multiple independent metal cavities, with a mixture of electrical and magnetic coupling between the cavities to form filters. These filters are then combined to form the combiner. Currently, combiners on the market often require extremely strong capacitive coupling to cancel out inductive coupling at the zero point on the left side of the filter channel. Capacitive coupling... The inductive coupling is controlled by the spacing between the cavities, while the inductive coupling is controlled by the connecting ribs between the cavities. However, when the zero point requirement on the left side of the passband is very high (i.e., very close to the passband), this filter requires extremely strong inductive coupling. In order to make the filter passband normal, stronger capacitive coupling is needed to cancel this inductive coupling. In order to enhance capacitive coupling to cancel inductive coupling, the spacing between the resonators needs to be reduced to enhance capacitive coupling. However, due to the limitations of component manufacturing technology, it is impossible to reduce the spacing indefinitely. Therefore, the position requirement of the zero point can only be appropriately relaxed. In addition, when the entire combiner is installed on the base station cabinet, the external environment such as the cabinet and the vibration generated inside the combiner will be superimposed with the internal electromagnetic force, which will lead to slight cracks, breaks or poor contact at the root of the coupling connection rib inside the inner shell. Summary of the Invention

[0003] One of the objectives of this application is to address the current combiner, which requires extremely strong inductive coupling when the zero-point requirement on the left side of the passband is very high. In order to enhance capacitive coupling to counteract inductive coupling, it is necessary to reduce the spacing between resonators to enhance capacitive coupling, but this is subject to limitations in component manufacturing processes. Therefore, a hybrid coupling combiner is proposed.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: a hybrid coupling combiner, comprising a main body and a sealing assembly, wherein the sealing assembly is disposed at the top of the main body and is detachable and installable from the main body by fasteners; the main body comprises an outer shell and an inner shell, wherein the inner shell is disposed inside the outer shell and is detachable and installable from the top of the outer shell and the sealing assembly; a resonator is disposed inside the inner shell, and a metal block is disposed at the top of the resonator; a tuning rod is disposed at the top of the metal block; and an inductive coupling connecting rib and a capacitive decoupling structure are mounted on the surface of the resonator.

[0005] Preferably, the outer casing is equipped with mounting ears for installation with an external base station equipment room, and the outer walls on both sides of the outer casing are also provided with U-shaped reserved slots.

[0006] Preferably, the sealing assembly includes a cover plate, a reset assembly, and a pressure plate, wherein the reset assemblies are evenly distributed on the bottom of the cover plate, and the bottom of the reset assembly is connected to the pressure plate.

[0007] Preferably, the bottom of the cover plate is further provided with extrusion rubber blocks, and the positions of the extrusion rubber blocks correspond to the positions of the reserved grooves.

[0008] Preferably, the bottom center of the pressure plate is provided with a placement groove, and the top of the placement groove is set as an open structure for placing desiccant.

[0009] Preferably, the inner shell is provided with connection ports on both sides, the positions of the connection ports correspond to the positions of the reserved slots, and the connection ports are located inside the reserved slots.

[0010] Preferably, the top of the inner shell is lower than the top of the outer shell, and the cross-section of the top of the inner shell corresponds to the cross-section of the pressure plate.

[0011] Preferably, the bottom of the inner shell is connected to the inner wall of the outer shell by a shock-absorbing assembly.

[0012] Preferably, the capacitor decoupling structure includes two I-shaped metal sheets, which are isolated from the resonator by Ultem material gaskets, and the metal sheets are fastened to the resonator by plastic screws.

[0013] Preferably, the capacitor decoupling structure includes two dumbbell-shaped metal blocks, which are isolated from the resonators by Ultem material gaskets. The two dumbbell-shaped metal blocks are fitted with the two adjacent resonators in a transitional engagement.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: (1) Introduce a capacitor decoupling structure between adjacent resonators. The capacitor decoupling structure can effectively eliminate excessive inductive coupling, increase the gap between resonators to provide strong capacitance, increase the machinability of the product, and achieve a balance between electrical performance and mechanical processing.

[0015] (2) It is equipped with an inner shell and an outer shell, and the top is sealed by a sealing component. At the same time, a shock-absorbing component is also provided between the inner shell and the outer shell to absorb vibration. It can cut off the transmission path of external vibration, absorb and dissipate the external vibration energy, and prevent it from being directly transmitted to the inner shell and internal precision structure. In this way, it can protect the fragile structures such as the internal resonator connecting ribs and capacitor coupling plates from vibration fatigue damage and improve the product's lifespan in harsh environments.

[0016] (3) A reserved groove is provided on the surface of the outer shell, and a squeezing rubber block is provided at the corresponding position of the reserved groove. When the cover plate is pressed down, the connection port that is locked in the reserved groove can be directly clamped, which is equivalent to an elastic clamp, ensuring continuous pressure at the interface position, thereby preventing the external connection from loosening and improving the reliability of the electrical connection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0018] Figure 2 This is a side view of the structure of the present invention.

[0019] Figure 3 This is a top view of the internal structure of the I-shaped capacitor decoupling structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the front view split structure of the present invention.

[0021] Figure 5 This is a top view of the internal structure of the dumbbell-shaped capacitor decoupling structure of the present invention.

[0022] Figure 6 This is an enlarged schematic diagram of the I-shaped capacitor decoupling structure of the present invention.

[0023] Figure 7 This is an enlarged schematic diagram of the dumbbell-shaped capacitor decoupling structure of the present invention.

[0024] Figure 8 This is an enlarged structural diagram of the connection port and the reserved slot engagement point of the present invention.

[0025] Figure 9 This is a schematic diagram of the split structure from a bottom view of the present invention.

[0026] In the diagram: 1. Outer shell; 11. Reserved slot; 12. Mounting lug; 2. Sealing assembly; 21. Cover plate; 22. Reset assembly; 23. Pressure plate; 24. Extruded rubber block; 25. Placement slot; 3. Inner shell; 31. Shock absorption assembly; 4. Resonator; 5. Fastener; 6. Connection port; 7. Inductive coupling connecting rib; 8. Capacitive decoupling structure. Detailed Implementation

[0027] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0029] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0030] One preferred embodiment of this application, such as Figures 1 to 9 As shown, a hybrid coupling combiner includes a main body and a sealing assembly 2. The sealing assembly 2 is disposed at the top of the main body and can be detached and installed from the main body by fasteners 5. The main body includes an outer shell 1 and an inner shell 3. The inner shell 3 is disposed inside the outer shell 1, and the top of the outer shell 1 can be detached and installed from the sealing assembly 2. A resonator 4 is disposed inside the inner shell 3, and a metal block is disposed at the top of the resonator 4. A tuning rod is disposed at the top of the metal block. An inductive coupling connecting rib 7 and a capacitive decoupling structure 8 are mounted on the surface of the resonator 4.

[0031] The capacitor decoupling structure 8 includes two I-shaped metal sheets, which are isolated from the resonator 4 by Ultem material gaskets, and the metal sheets are fastened to the resonator 4 by plastic screws.

[0032] This application provides a combiner with a capacitor decoupling structure 8. Specifically, in use, the entire sealing assembly 2 is first in the open state. The inductive coupling connecting rib 7 and the capacitor decoupling structure 8 are installed between the resonator 4 and the resonator. During installation, the gasket is first laid, then the metal plate is positioned, and finally, it is tightened with plastic screws. After tightening, the sealing work can be performed. Simply snap the entire sealing assembly 2 onto the top of the outer shell 1, and finally tighten it with bolts or other fasteners 5 to complete the sealing work. Finally, the entire combiner is installed in a fixed position for normal connection.

[0033] In this application, according to Figure 1 and Figure 2 As shown, mounting ears 12 are installed on the outside of the outer shell 1 for installation with the external base station equipment room. "U"-shaped reserved grooves 11 are also provided on the outer walls of both sides of the outer shell 1.

[0034] Specifically, when installing the entire combiner, simply align the mounting lug 12 with the external mounting position and tighten it using external bolts.

[0035] As a further preferred embodiment, according to Figure 3 , Figure 8 and Figure 9 As shown, the sealing assembly 2 includes a cover plate 21, a reset assembly 22 and a pressure plate 23. The bottom of the cover plate 21 is evenly distributed with reset assemblies 22, and the bottom of the reset assembly 22 is connected to the pressure plate 23.

[0036] The bottom of the cover plate 21 is also provided with extrusion rubber blocks 24, and the position of the extrusion rubber blocks 24 corresponds to the position of the reserved groove 11.

[0037] The bottom center of the pressure plate 23 is provided with a placement groove 25, and the top of the placement groove 25 is set as an open structure for placing desiccant, so as to facilitate the drying of the inside of the inner shell 3 by using desiccant.

[0038] Both sides of the inner shell 3 are provided with connection ports 6, the positions of the connection ports 6 correspond to the positions of the reserved slots 11, and the connection ports 6 are located inside the reserved slots 11.

[0039] The top of the inner shell 3 is lower than the top of the outer shell 1, and the cross-section of the top of the inner shell 3 corresponds to the cross-section of the pressure plate 23.

[0040] Specifically, during the sealing process, the pressure plate 23 needs to be aligned with the top of the inner housing 3, and then the entire cover plate 21 is snapped onto the top of the outer housing 1. During the snapping process, it is necessary to ensure that the compression rubber block 24 at the bottom of the cover plate 21 corresponds to the position of the reserved groove 11. After that, it can be tightened by fasteners 5. When the cover plate 21 is sealed with the outer housing 1, the pressure plate 23 contacts the top of the inner housing 3, which will compress the pressure plate 23, thereby compressing the reset component 22. Therefore, the reset force of the reset component 22 will be applied to the position of the inner housing 3 to ensure the purpose of sealing the inner housing 3. In addition, a sealing ring can be set at the bottom of the pressure plate 23 for sealing. When the cover plate 21 is installed downwards, the compression rubber block 24 at its bottom will also squeeze and hold the connector at the connection port 6 to achieve the purpose of fastening the connection position.

[0041] In this application, the reset component 22 can be any reset element such as a reset spring, and the present invention does not impose any restrictions on it.

[0042] Furthermore, according to Figure 9 As shown, the bottom of the inner shell 3 is connected to the inner wall of the outer shell 1 by a shock-absorbing assembly 31.

[0043] When the entire combiner is in use, external vibrations can be absorbed by the shock-absorbing component 31, which connects the outer shell 1 and the inner shell 3. This shock-absorbing component 31 can counteract the vibrations and achieve the purpose of vibration reduction.

[0044] The shock absorption component 31 can be a combination of a shock absorption spring and a damper, or it can be other shock absorption parts. The present invention does not impose any restrictions on this.

[0045] As a further preferred embodiment, according to Figure 5 and Figure 7 As shown, the capacitor decoupling structure 8 includes two dumbbell-shaped metal blocks, which are isolated from the resonator 4 by Ultem material gaskets. The two dumbbell-shaped metal blocks are fitted with the two adjacent resonators 4 in a transitional engagement.

[0046] The use of two dumbbell-shaped metal blocks can also eliminate excessive inductive coupling, thereby increasing the gap of the resonator and thus counteracting inductive coupling.

[0047] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A hybrid coupling combiner, characterized in that, The device includes a main body and a sealing assembly (2). The sealing assembly (2) is located at the top of the main body and can be disassembled and installed with the main body via fasteners (5). The main body includes an outer shell (1) and an inner shell (3). The inner shell (3) is located inside the outer shell (1), and the top of the outer shell (1) can be disassembled and installed with the sealing assembly (2). A resonator (4) is provided inside the inner shell (3), and a metal block is provided at the top of the resonator (4). A tuning rod is provided at the top of the metal block. An inductive coupling connecting rib (7) and a capacitor decoupling structure (8) are installed on the surface of the resonator (4).

2. The hybrid coupler as described in claim 1, characterized in that: The outer shell (1) is equipped with mounting ears (12) for installation with the external base station equipment room. The outer walls on both sides of the outer shell (1) are also provided with U-shaped reserved grooves (11).

3. A hybrid coupler as described in claim 2, characterized in that: The sealing assembly (2) includes a cover plate (21), a reset assembly (22) and a pressure plate (23). The bottom of the cover plate (21) is evenly distributed with reset assemblies (22), and the bottom of the reset assembly (22) is connected to the pressure plate (23).

4. A hybrid coupler as described in claim 3, characterized in that: The bottom of the cover plate (21) is also provided with extrusion rubber blocks (24), and the position of the extrusion rubber blocks (24) corresponds to the position of the reserved groove (11).

5. A hybrid coupler as described in claim 4, characterized in that: The bottom center of the pressure plate (23) is provided with a placement groove (25), and the top of the placement groove (25) is set as an open structure for placing desiccant.

6. A hybrid coupling combiner as described in claim 5, characterized in that: The inner shell (3) is provided with connection ports (6) on both sides. The position of the connection port (6) corresponds to the position of the reserved slot (11). The connection port (6) is located inside the reserved slot (11).

7. A hybrid coupler as described in claim 3, characterized in that: The top of the inner shell (3) is lower than the top of the outer shell (1), and the cross-section of the top of the inner shell (3) corresponds to the cross-section of the pressure plate (23).

8. A hybrid coupler as described in claim 1, characterized in that: The bottom of the inner shell (3) is connected to the inner wall of the outer shell (1) by a shock-absorbing component (31).

9. A hybrid coupler as described in claim 1, characterized in that: The capacitor decoupling structure (8) includes two I-shaped metal sheets, which are isolated from the resonator (4) by Ultem material gaskets, and the metal sheets are fastened to the resonator (4) by plastic screws.

10. A hybrid coupling combiner as described in claim 1, characterized in that: The capacitor decoupling structure (8) includes two dumbbell-shaped metal blocks, which are isolated from the resonator (4) by a Ultem material gasket. The two dumbbell-shaped metal blocks and the two adjacent resonators (4) are fitted together by a transition fit.

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