Connection module and base station communication system

Abstract

The invention discloses a connection module and a base station communication system. The connection module comprises a first substrate, a second substrate, a first coupling connector and a second coupling connector, the first coupling connecting piece is arranged on the first substrate and is provided with a first coupling end and a first connecting end; the second coupling connecting piece is arranged on the second substrate and is provided with a second coupling end and a second connecting end; the first coupling end and the second coupling end are in coupling connection, the first connecting end is used for being connected with an AU, and the second connecting end is used for being connected with an RRU; the connecting module can replace a traditional connector through the structure, the cost is reduced, the integration level is improved, the performance is better, and a base station communication system applying the connecting module achieves zero cables and zero welding spots and meets the use requirements.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of antennas, in particular to a connecting module and a base station communication system. BACKGROUND

[0002] Multi-band / wide-band Massive MIMO base station communication system is different from narrow-band base station, and has the characteristics of high integration, miniaturization and multi-function, and is widely concerned in 5G and next generation communication system; and the traditional multi-band / wide-band base station communication system (active antenna system) integrates AU (antenna system) and RRU (radio frequency module), and a wideband connector is usually used for docking between the two, including SMA, SMP and other connectors, and the use of the wideband connector for docking not only has high cost, but also has large volume of the wideband connector, which is not conducive to the reduction of antenna profile height, and also increases additional cables and welding points, further increasing the cost; therefore, there is an urgent need for a connecting module and a base station communication system to solve the above problems. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a connecting module and a base station communication system.

[0004] The technical solution adopted by an embodiment of the present application to solve its technical problem is: a connecting module, comprising a first substrate, a second substrate, a first coupling connector and a second coupling connector; The first coupling connector is arranged on the first substrate and has a first coupling end and a first connecting end; The second coupling connector is arranged on the second substrate and has a second coupling end and a second connecting end; The first coupling end and the second coupling end are coupled between them, the first connecting end is used for connecting with the AU, and the second connecting end is used for connecting with the RRU.

[0005] As one of the preferred embodiments of the present application, one of the first coupling end and the second coupling end is located within the projection of the other in the coupling direction of the two.

[0006] As one of the preferred embodiments of the present application, the coupling medium between the first coupling end and the second coupling end is arranged as air, green oil or insulating film.

[0007] As one of the preferred embodiments of the present application, the front side of the first substrate is provided with an impedance matching boss, the back side is provided with a recessed position opposite to the impedance matching boss, and a through slot penetrating through the impedance matching boss, the first substrate and the recessed position is further included, and the first coupling end is located on the impedance matching boss.

[0008] As one of the preferred embodiments of the present application, the second substrate is provided with an impedance matching hole arranged opposite to the second coupling end.

[0009] As one of the preferred embodiments of the present application, a high-impedance open stub is arranged on the first connecting end.

[0010] As one of the preferred embodiments of the present application, the second substrate comprises a plurality of impedance matching boards stacked in sequence, the impedance matching boards are arranged as PCB boards, and a plurality of metallized through holes are arranged through the second substrate to connect the conductive layers on different impedance matching boards with the second connecting end.

[0011] As one of the preferred embodiments of the present application, a shielding ring is arranged on the second substrate and encloses the outer periphery of the second coupling connector.

[0012] As one of the preferred embodiments of the present application, a plurality of metallized micro-holes are arranged on the second substrate at intervals, and the plurality of metallized micro-holes are enclosed as a shielding ring.

[0013] The base station communication system comprises the AU, the RRU and the connecting module.

[0014] The connecting module and the base station communication system have the following advantages: the connecting module comprises a first substrate, a second substrate, a first coupling connector and a second coupling connector; the first coupling connector is arranged on the first substrate and has a first coupling end and a first connecting end; the second coupling connector is arranged on the second substrate and has a second coupling end and a second connecting end; the first coupling end and the second coupling end are coupled and connected, the first connecting end is used to connect with the AU, and the second connecting end is used to connect with the RRU; the above structure can replace the traditional connector, which not only reduces the cost and improves the integration, but also has better performance; the base station communication system using the connecting module realizes zero cable and zero welding point, and meets the use requirements. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which: Figure 1 It is a structural schematic diagram of the connecting module; Figure 2 It is an exploded view of the connecting module; Figure 3 It is a structural schematic diagram of the first substrate; Figure 4 It is a structural schematic diagram of the base station communication system; Figure 5 It is an exploded view of the base station communication system; Figure 6 It is a transmission characteristic diagram of the connecting module. DETAILED DESCRIPTION

[0016] In the description of the present application, the meaning of multiple is more than two, greater than, less than, more than, etc. is not included in the number, above, below, within, etc. is understood to include the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0017] In the description of the present application, it is understood that the orientation description, such as up, down, front, back, left, right, etc. indicates the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0018] In the description of the present application, it is understood that the orientation description, such as up, down, front, back, left, right, etc. indicates the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0019] In the present application, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be broadly understood, for example, they can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or can be detachably connected, or can be integrally formed; can be mechanically connected; can be the internal communication of two elements or the interaction relationship between two elements. The person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0020] Referring to Figures 1 to 5 The present application provides a connection module, comprising a first substrate 10, a second substrate 20, a first coupling connector 30 and a second coupling connector 40; The first coupling connector 30 is provided on the first substrate 10 and has a first coupling end 31 and a first connecting end 32; The second coupling connector 40 is provided on the second substrate 20 and has a second coupling end 41 and a second connecting end 42; The first coupling end 31 and the second coupling end 41 are coupled, the first connecting end 32 is used for connecting with the AU 51, and the second connecting end 42 is used for connecting with the RRU 52.

[0021] In the present application, the first substrate 10 is arranged on the AU 51, and the second substrate 20 is arranged on the RRU 52, wherein the first coupling connector 30 with the first coupling end 31 and the first connecting end 32 is arranged on the first substrate 10, the second coupling connector 40 with the second coupling end 41 and the second connecting end 42 is arranged on the second substrate 20, the first connecting end 32 is connected with the connecting port on the AU 51, the second connecting end 42 is connected with the connecting port on the RRU 52, and the electric signal is transmitted between the first coupling connector 30 and the second coupling connector 40 through the coupling connection between the first coupling end 31 and the second coupling end 41; further, in the purpose of reducing the cost, the material process of the first substrate 10, the second substrate 20, the first coupling connector 30 and the second coupling connector 40 can be consistent with the material and processing technology of the radio frequency circuit board in the AU 51 / RRU 52, including the PCB board material and the electroplated material, and the process includes the PCB processing technology and the electroplating process.

[0022] Referring to Figure 2 In some embodiments, one of the first coupling end 31 and the second coupling end 41 is located in the projection of the other in the coupling direction of the two, preferably, the coupling medium between the first coupling end 31 and the second coupling end 41 is air, green oil or insulating film; wherein the first coupling end 31 and the second coupling end 41 are preferably arranged in a disc structure, which can be a polygonal disc, an elliptical disc, a circular disc and the like, and the first coupling end 31 and the second coupling end 41 are arranged in a stacked manner, and the gap in the middle can be filled with air, film, green oil and the like non-metallic materials, and at the same time, in order to guarantee the electrical performance characteristics of the two, the size of the two needs to be at least consistent or slightly larger than the other on the basis of considering the processing and assembly errors.

[0023] Referring to Figures 1-3 , Figure 5 In some embodiments, the front side of the first substrate 10 is provided with an impedance matching boss 61, the back side is provided with a recess 62 opposite to the impedance matching boss 61, further comprising a through slot 63 penetrating the impedance matching boss 61, the first substrate 10 and the recess 62, and the first coupling end 31 is located on the impedance matching boss 61; further, the second substrate 20 is provided with an impedance matching hole 64 arranged opposite to the second coupling end 41; still further, the second substrate 20 comprises a plurality of impedance matching boards 21 arranged in sequence, and the impedance matching board 21 is arranged as a PCB board, further comprising a plurality of metallized vias 22 penetrating the second substrate 20, so that the conductive layer on different impedance matching boards 21 is connected with the second connecting end 42; this arrangement can construct a first impedance matching network between the first connecting end 32 and the AU 51, and a second impedance matching network between the second connecting end 42 and the RRU 52, thereby improving the impedance matching characteristics of the connection module.

[0024] Referring toFigures 1-2 In some embodiments, a high-impedance open stub 70 is arranged on the first connecting end 32, and the high-impedance open stub 70 can be introduced to expand the frequency bandwidth.

[0025] Referring to Figures 1-2 In some embodiments, a shielding ring 80 is arranged on the second substrate 20 to enclose the outer periphery of the second coupling connector 40, so that the line signal can be prevented from leaking, and better EMC can be achieved; as a preferred embodiment, a plurality of metalized micro-holes 23 are arranged on the second substrate 20 at intervals, and the plurality of metalized micro-holes 23 are enclosed to form the shielding ring 80, that is, a plurality of micro-holes are formed on the second substrate 20, and the inner sidewall of the micro-holes is metalized, for example, by electroplating or other processes, to form the metalized micro-holes 23; the center lines of the plurality of metalized micro-holes 23 are connected and enclosed to form the shielding ring 80, and it should be noted that, Figure 2 The ring structure with reference numeral 80 is a simulation diagram of the shielding ring 80.

[0026] The application also provides a base station communication system, which comprises the AU 51, the RRU 52 and the connecting module, and the connecting module is as described above. Figure 6 The transmission characteristic diagram of the connecting module is shown in the figure, and it can be seen that the connecting module can achieve a wideband working characteristic (1.7-2.7 GHz, relative bandwidth 46%), and the connecting module achieves an ultra-low insertion loss characteristic, and the insertion loss is only 0.088 dB (center frequency point).

[0027] The application has the advantages that the above structure can replace the traditional connector, not only reduces the cost and improves the integration, but also has better performance, and the base station communication system using the connecting module achieves zero cable and zero welding point, and meets the use requirements.

[0028] Of course, the application is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the application, and these equivalent modifications and replacements are all included in the scope defined by the claims of the present application.

Claims

1. Connection module, characterized by: It comprises a first substrate (10), a second substrate (20), a first coupling connector (30) and a second coupling connector (40); The first coupling connector (30) is arranged on the first substrate (10) and has a first coupling end (31) and a first connection end (32); The second coupling connector (40) is arranged on the second substrate (20) and has a second coupling end (41) and a second connection end (42); The first coupling end (31) and the second coupling end (41) are coupled and connected, the first connection end (32) is used to connect to the AU (51), and the second connection end (42) is used to connect to the RRU (52).

2. The connection module according to claim 1, characterized in that: One of the first coupling end (31) and the second coupling end (41) is located within a projection of the other in a coupling direction of the two.

3. The connection module according to claim 1, wherein: The coupling medium between the first coupling end (31) and the second coupling end (41) is set to air, green oil or an insulating film.

4. The connection module according to claim 1, characterized in that: The first substrate (10) is provided with an impedance matching boss (61) on the front side and a recess (62) opposite to the impedance matching boss (61) on the rear side, and further includes a through slot (63) passing through the impedance matching boss (61), the first substrate (10) and the recess (62), and the first coupling end (31) is located on the impedance matching boss (61).

5. The connection module according to claim 1, characterized in that: An impedance matching hole (64) is provided on the second substrate (20) and is arranged opposite to the second coupling end (41).

6. The connection module according to claim 1, characterized in that: A high-impedance open-circuit branch (70) is provided on the first connection end (32).

7. The connection module according to claim 1, characterized in that: The second substrate (20) includes a plurality of impedance matching plates (21) stacked in sequence, wherein the impedance matching plates (21) are configured as PCB boards and further include a plurality of metallized vias (22) passing through the second substrate (20) so as to connect the conductive layers on different impedance matching plates (21) to the second connection end (42).

8. The connection module according to claim 1, characterized in that: A shielding ring (80) is provided on the second substrate (20) and surrounds the outer periphery of the second coupling connector (40).

9. The connection module according to claim 8, characterized in that: A plurality of metallized micropores (23) are arranged at intervals on the second substrate (20), and the plurality of metallized micropores (23) enclose the shielding ring (80).

10. A base station communication system, characterized in that: The invention comprises an AU (51), an RRU (52), and a connection module according to any one of claims 1 to 9.

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