CN211700520U - 5G wireless communication base station - Google Patents

Abstract

The utility model relates to a 5G wireless communication base station, which comprises an outer cover, an antenna array, a filter, a shielding cover, a PCB board and a radiator which are arranged in sequence; the external connecting pins of the filter are respectively the cover plate of the filter and the bottom of the filter shell; one external connecting pin of the filter is connected with the antenna, and the other external connecting pin passes through the shielding case to be connected with the PCB. The utility model has compact structure, small size and portability.

Description

5G wireless communication base station

Technical Field

The utility model relates to a communication technology field, in particular to 5G wireless communication basic station.

Background

The wireless communication base station refers to a radio transceiver station for information transmission between a wireless terminal and a wireless communication switching center in a certain radio coverage area. The receiving mode of the base station is that an antenna receives signals, the signals are transmitted to a PCB through a filter, and specifically, the signals are transmitted to a core network through a low-noise discharge circuit, a digital intermediate frequency module and an optical module in sequence and then through optical fibers. The transmission mode of the base station is that data of a core network is transmitted to a PCB board through optical fibers, and specifically, the data is transmitted to an antenna end through an optical module, a digital intermediate frequency module and a power amplifier circuit in sequence and then is transmitted to the antenna end through a filter for transmission.

The filter used for the mobile communication base station can effectively restrain useless signals and plays the roles of selecting signals, attenuating noise, filtering interference and the like. Dozens of filters are needed for a 5G wireless communication base station, and with the promotion of green energy and the increasing demand for cost reduction, the demand for low-cost filters is increasing. Meanwhile, with the development of miniaturization and lightness of the mobile base station, the filter in the mobile base station is required to be capable of adapting to the narrow assembling space in the 5G base part, and the requirements of smaller structure and better performance are met. Most of the filters used in the mobile communication devices in the prior art are standard components, and the filters are fixed in shape and cannot meet the requirements of a 5G wireless communication base station requiring a smaller structure and the like.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, the above-mentioned defect to prior art proposes a 5G wireless communication basic station.

The utility model provides a technical scheme that its technical problem adopted does:

the 5G wireless communication base station comprises an outer cover, an antenna array, a filter, a shielding cover, a PCB and a radiator which are sequentially arranged; the external connecting pins of the filter are respectively the cover plate of the filter and the bottom of the filter shell; one external connecting pin of the filter is connected with the antenna, and the other external connecting pin passes through the shielding case to be connected with the PCB.

Further, the method comprises the following steps:

the filter shell is formed by arranging three or more resonant cavities in a honeycomb manner, and the resonators are positioned on the central axis of each resonant cavity.

Each resonant cavity is a regular cylindrical cavity.

The cylindrical cavity is a cylinder or a regular polygonal cylinder.

When the number of the filters is two or more, the number of resonators of each filter may be the same or different.

The filter is integrally formed with the shield can,

the joint of three or more than three resonant cavities is provided with a screw hole.

The resonator can be rotatably arranged on the cover plate around the axis line of the resonator and is suspended in the resonant cavity; the resonator coupling surface on the bottom surface of the resonator is opposite to the cavity coupling surface on the bottom of the resonant cavity, when the resonator is rotated, the distance between the resonator coupling surface and the cavity coupling surface is unchanged, and the effective coupling areas of the two coupling surfaces are correspondingly changed.

Compared with the prior art, the utility model provides a compact structure of wave filter, it is small, the resonant cavity uniformity is good, more is applicable to the miniaturized demand of 5G wireless communication basic station.

Drawings

Fig. 1 is a schematic structural diagram of a 5G wireless communication base station of the present invention;

fig. 2 is a schematic diagram of an axial projection of the middle filter of the present invention;

FIG. 3 is a schematic diagram of the axial projection of the present invention with the filter removed from the cover plate;

fig. 4 is a schematic front view of an orthographic projection of the middle filter of the present invention;

fig. 5 is a schematic top view of an orthographic projection of the middle filter of the present invention;

fig. 6 is a schematic top view of an orthographic projection of the resonator of the middle filter of the present invention being a right-sided cylinder;

fig. 7 is a schematic top view of an orthographic projection of the resonator of the middle filter of the present invention being a cylinder;

fig. 8 is a schematic cross-sectional view of an orthographic projection of each component in a resonant cavity of the filter of the present invention;

fig. 9 is a schematic diagram of effective coupling between two coupling surfaces of a resonator in a top view of a filter according to the present invention;

fig. 10 is a schematic diagram of an axial side projection of a resonator of the middle filter of the present invention.

Detailed Description

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1, a 5G wireless communication base station is a cube and includes an outer cover 1, an antenna array 2, a filter 3, a shielding cover 4, a PCB 5 and a heat sink 6, which are sequentially arranged.

As shown in fig. 2 to 7, the number of the filters may be one or more, each filter includes N resonators 35, and the filter housing 30 of the filter is formed by arranging N resonant cavities 31 in a honeycomb manner, so that the resonant cavities are arranged more compactly, and the overall volume of the filter housing 30 is effectively reduced; the resonators 35 are arranged on the central axis of the resonant cavities 31 one by one, one external connection pin 32 of the filter is connected with the antenna, the other external connection pin 33 penetrates through the shielding case and is connected with the PCB, and N is larger than or equal to 3. The screw holes for fixed installation are arranged at the joints of the three or three resonant cavities as connecting pieces, so that the connecting pieces do not increase the volume of the filter, and the filter is light in weight and small in volume.

When more than two filters are used in the 5G wireless communication base station, the number of resonators of each filter may be the same or different. In this embodiment, two sets of four filters are provided, and each set of four filters may be integrally die-cast, may be individually die-cast, or may be integrally formed with the shield.

As shown in fig. 6 and 7, each resonant cavity 31 is a cylindrical cavity, which may be a cylinder or a regular polygonal cylinder, and the resonant cavity is a circle or a regular polygon when viewed from the top. In the present embodiment, a regular hexahedron is illustrated. In other embodiments, other regular polyhedrons such as regular octahedrons may be used. Because the shape in each resonant cavity is regular and has no abnormal shape, the excellent performance of the filter is ensured.

As shown in fig. 8 to 10, the resonator 35 of the filter is suspended in the resonant cavity by an elastic element 303, such as a disc spring, riveted on the cover plate 34; the elastic element 303 can ensure that the resonator is tightly contacted with the cover plate surface and cannot rotate after being riveted.

The bottom surface of the resonant cavity 31 is provided with a circular small boss which is not coaxial with the axis of the resonator, the top surface of the boss forms a cavity coupling surface 301 which is opposite to the resonator coupling surface 300 which is positioned on the bottom surface of the resonator 35 on the cover plate, and the coupling surface of the resonator and the cavity coupling surface are in any circular shape except the axis of the resonator as the center of a circle; the coupling quantity of the filter depends on the distance between the two coupling surfaces and the effective coupling area of the two coupling surfaces; the coupling quantity is inversely proportional to the distance and directly proportional to the area; after the resonator and the cover plate are riveted, the distance between the coupling surface of the resonator and the coupling surface of the cavity is fixed.

Referring to fig. 9, when the direction of the resonator is adjusted, the effective coupling area of the resonator coupling surface and the cavity coupling surface can be changed, so as to achieve the function of adjusting the coupling amount. The adjusting screw rod of the traditional filter extending out of the resonant cavity is effectively omitted, the height of the filter is effectively reduced, the filter is miniaturized, the installation space is reduced, the adjustment is convenient, meanwhile, the manufacturing cost is reduced, and the filter is more suitable for the small and light requirements of a 5G wireless communication base station.

It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some technical features; and that such modifications and substitutions are intended to be included within the scope of the appended claims.

Claims (8)

1. A 5G wireless communication base station, characterized in that:

the antenna comprises an outer cover, an antenna array, a filter, a shielding cover, a PCB and a radiator which are sequentially arranged; the external connecting pins of the filter are respectively the cover plate of the filter and the bottom of the filter shell; one external connecting pin of the filter is connected with the antenna, and the other external connecting pin passes through the shielding case to be connected with the PCB.

2. The 5G wireless communication base station according to claim 1, characterized in that:

the filter shell is formed by arranging three or more resonant cavities in a honeycomb manner, and the resonators are positioned on the central axis of each resonant cavity.

3. The 5G wireless communication base station according to claim 2, characterized in that:

each resonant cavity is a regular cylindrical cavity.

4. A 5G wireless communication base station according to claim 3, characterized in that:

the cylindrical cavity is a cylinder or a regular polygonal cylinder.

5. The 5G wireless communication base station according to claim 1, wherein:

when the number of the filters is two or more, the number of resonators of each filter may be the same or different.

6. The 5G wireless communication base station according to claim 1, characterized in that:

the filter and the shielding case are integrally formed.

7. The 5G wireless communication base station according to claim 2, characterized in that:

the connection parts of three or more than three resonant cavities are provided with screw holes for external fixation.

8. The 5G wireless communication base station according to claim 2, characterized in that:

the resonator can be rotatably arranged on the cover plate around the axis line of the resonator and is suspended in the resonant cavity; the resonator coupling surface on the bottom surface of the resonator is opposite to the cavity coupling surface on the bottom of the resonant cavity, when the resonator is rotated, the distance between the resonator coupling surface and the cavity coupling surface is unchanged, and the effective coupling areas of the two coupling surfaces are correspondingly changed.

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