CN210468098U

CN210468098U - Antenna system

Info

Publication number: CN210468098U
Application number: CN201921819508.9U
Authority: CN
Inventors: 法斌斌; 苏国生; 李明超; 田欢; 王钦源; 黄明达
Original assignee: Comba Telecom Technology Guangzhou Ltd
Current assignee: Comba Telecom Technology Guangzhou Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-05-05
Anticipated expiration: 2029-10-25

Abstract

The utility model discloses an antenna system, which comprises a reflecting plate, wherein the reflecting plate is provided with a first through hole; the power distribution network is arranged on one side of the reflecting plate; the radiation oscillator is arranged on one side of the reflecting plate and is electrically connected with the power distribution network; and the phase shifting network is arranged on the other side of the reflecting plate and provided with a connecting part, and the connecting part is electrically connected with the power distribution network through the first through hole. This antenna system, the power divides the network and establishes respectively in the both sides of reflecting plate with the network of shifting the phase, and is equipped with first through-hole on the reflecting plate, makes the connecting portion of the network of shifting the phase can divide network electric connection through first through-hole directly with the power, has saved and has moved the required cable such as joining in marriage the phase place with shifting the phase place, has reduced the welding point, and assembly process is simple, has avoided the too much network mismatch and the intermodulation problem that leads to of welding point.

Description

Antenna system

Technical Field

The utility model relates to a communication antenna technical field especially relates to an antenna system.

Background

With the continuous development of mobile communication technology, the role of an electrically tunable antenna in network coverage is also more and more important. However, the conventional electrically tunable base station antenna has a heavy weight, and a connection network between components is also complex, which is likely to cause some problems. These problems mainly include: the assembly process is various, and the producibility is poor; the number of antenna welding spots among the components is large, which easily causes the problems of network mismatch and intermodulation.

SUMMERY OF THE UTILITY MODEL

Therefore, there is a need for an antenna system that is simple to assemble and avoids the problems of network mismatch due to a large number of solder joints.

The technical scheme is as follows:

an antenna system comprises a reflecting plate, a first antenna and a second antenna, wherein the reflecting plate is provided with a first through hole; the power distribution network is arranged on one side of the reflecting plate; the radiation oscillator is arranged on one side of the reflecting plate and is electrically connected with the power distribution network; and the phase shifting network is arranged on the other side of the reflecting plate and provided with a connecting part, and the connecting part is electrically connected with the power distribution network through the first through hole.

Above-mentioned antenna system, the power divides the network and establishes respectively in the both sides of reflecting plate with the phase shift network, and is equipped with first through-hole on the reflecting plate, makes the connecting portion of phase shift network can divide network electric connection through first through-hole directness and power, has saved and has joined in marriage required cables such as phase place with shifting, has reduced the welding point, and assembly process is simple, has avoided the too much network mismatch and the intermodulation problem that leads to of welding point.

The technical solution is further explained below:

in one embodiment, the phase shift network comprises at least one dielectric phase shift structure, and the dielectric phase shift structure is provided with a connecting part.

In one embodiment, the dielectric phase shift structure comprises a cavity, a phase shift circuit board and a phase shift dielectric block, wherein the cavity is provided with an inner cavity, the phase shift circuit board and the phase shift dielectric block are both arranged in the inner cavity, the cavity is further provided with a second through hole communicated with the inner cavity, the connecting part is arranged on the phase shift circuit board, the connecting part is electrically connected with the power distribution network through the second through hole and the first through hole, and the phase shift dielectric block can move in the inner cavity along the length direction of the cavity.

In one embodiment, the inner wall of the inner cavity is further provided with a limiting flange, and the limiting flange is arranged along the length direction of the cavity to limit the movement of the phase-shifting dielectric block;

the phase-shifting dielectric blocks are two, and the phase-shifting circuit board is positioned between the two phase-shifting dielectric blocks.

In one embodiment, the second through hole is a through groove formed along the length direction of the cavity, and the phase-shift circuit board is provided with at least one connecting part.

In one embodiment, the power divider network includes a power divider and a phase matching network, the phase matching network is electrically connected to the power divider, and the radiation oscillator and the phase shifting network are both electrically connected to the power divider.

In one embodiment, the radiation oscillator comprises at least one radiation unit, the radiation unit comprises an oscillator radiation panel and a feed column, one end of the feed column is electrically connected with the power divider, and the other end of the feed column is electrically connected with the oscillator radiation panel.

In one embodiment, at least two radiation units are arranged, and the radiation units are arranged on the reflecting plate at intervals.

In one embodiment, the power divider includes a power dividing circuit board, the power dividing circuit board is provided with a third through hole, the third through hole is arranged corresponding to the first through hole, and the connecting portion is plugged or welded with the power dividing circuit board through the third through hole after passing through the second through hole and the first through hole.

In one embodiment, the reflector plate, the power dividing network, the radiation oscillator and the phase shifting network are integrally welded.

Drawings

Fig. 1 is a schematic diagram of the overall structure of an antenna system in an embodiment;

FIG. 2 is a cross-sectional block diagram of the antenna system of the embodiment of FIG. 1;

FIG. 3 is a top view of the antenna system of the embodiment of FIG. 1;

FIG. 4 is a front view of the antenna system of FIG. 1 with the cavity removed;

fig. 5 is a top view of the antenna system of fig. 1 with the radiating elements removed;

fig. 6 is a front structural diagram of a part of the antenna system in the embodiment of fig. 1.

Reference is made to the accompanying drawings in which:

100. a reflective plate; 200. a power distribution network; 210. a power divider; 211. a power division input port; 220. distributing a phase line; 300. a radiation unit; 310. a vibrator radiation panel; 320. a feed column; 400. a dielectric phase shifting structure; 410. a cavity; 411. a second through hole; 412. a limiting flange; 420. a phase shift circuit board; 421. a connecting portion; 430. a phase-shifting dielectric block; 441. a phase shift output port; 442. and a phase shift input port.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings:

it will be understood that when an element is referred to herein as being "secured" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 6, an antenna system includes a reflector 100, the reflector 100 having a first through hole; the power distribution network 200, the power distribution network 200 is arranged at one side of the reflecting plate 100; the radiation oscillator is arranged on one side of the reflecting plate 100 and is electrically connected with the power distribution network 200; and a phase shifting network disposed on the other side of the reflection plate 100, the phase shifting network having a connection portion 421, the connection portion 421 being electrically connected to the power dividing network 200 through the first through hole.

In the antenna system in this embodiment, the power distribution network 200 and the phase shift network are respectively disposed on two sides of the reflection plate 100, and the reflection plate 100 is provided with the first through hole, so that the connection portion 421 of the phase shift network can be directly electrically connected to the power distribution network 200 through the first through hole, thereby eliminating cables required for phase shift, reducing welding points, simplifying the assembly process, and avoiding the problems of network mismatch and intermodulation caused by excessive welding points.

The reflection plate 100 may be a metal plate for enhancing the directivity of the antenna, and as shown in fig. 1, both ends of the reflection plate 100 may be further provided with bending portions bent toward the same side. The first through hole is arranged to meet the requirement that the connection portion 421 of the phase shift network passes through, so that the connection portion 421 can reach one side of the reflection plate 100 from the other side of the reflection plate 100 through the first through hole, thereby implementing the function of electrically connecting the connection portion 421 with the power distribution network 200, that is, implementing the function of directly connecting the phase shift network with the power distribution network 200, and the description is omitted.

The radiating oscillator is a component for converting current energy into electromagnetic energy and radiating the electromagnetic energy, or receiving the electromagnetic energy and converting the electromagnetic energy into current energy, and can be in an array structure. The radiation oscillator is also disposed on the reflection plate 100 and electrically connected to the power distribution network 200, the power distribution network 200 is used for network power distribution, and the phase shift network is used for changing the phase, so that the electrical signal is fed into the radiation oscillator, and those skilled in the art can arrange the radiation oscillator according to specific needs.

The phase shifting network is used for phase adjustment and is arranged on the other side of the reflecting plate 100, the phase shifting network is provided with a connecting part 421, the connecting part 421 is used for realizing the electrical connection of the phase shifting network and the power distribution network 200, and if the direct connection of the phase shifting network and the power distribution network 200 can be realized in a splicing or welding mode, the problems of network mismatch and intermodulation caused by a large number of welding points are avoided, the production and assembly are more convenient, and the production efficiency and the yield are improved.

As shown in fig. 1, the power distribution network 200 is closely attached to the upper surface of the reflection plate 100, the radiation oscillator is disposed on the power distribution network 200, the phase shift network is disposed on the lower surface of the reflection plate 100, the upper end of the phase shift network has a connection portion 421, and the connection portion 421 passes through the first through hole to be electrically connected to the bottom end of the power distribution network 200.

Further, the connection portion 421 may be a connection port on the phase shift network, and may be directly plugged into a corresponding port on the power distribution network 200, or connected by soldering (for example, by reflow soldering), which is not described herein again.

The direct splicing or welding mode enables the phase shifting network and the power dividing network 200 to be independently assembled respectively and then integrally assembled, thereby reducing the production flow and improving the production efficiency and the yield.

Referring to fig. 1, 2 and 4, the phase shift network includes at least one dielectric phase shift structure 400, and the dielectric phase shift structure 400 has a connection portion 421.

The phase shifting network has at least one dielectric phase shifting structure 400 to meet the phase shifting requirements. In fig. 1, the antenna system has four dielectric phase shifting structures 400.

Referring to fig. 1 and 2, the dielectric phase shift structure 400 includes a cavity 410, a phase shift circuit board 420 and a phase shift dielectric block 430, the cavity 410 forms an inner cavity, the phase shift circuit board 420 and the phase shift dielectric block 430 are both disposed in the inner cavity, the cavity 410 is further provided with a second through hole 411 communicated with the inner cavity, the connection portion 421 is disposed on the phase shift circuit board 420, the connection portion 421 is electrically connected to the power distribution network 200 through the second through hole 411 and the first through hole, and the phase shift dielectric block 430 can move in the inner cavity along the length direction of the cavity 410.

The cavity 410 may be a rectangular structure or an arc structure, an inner cavity is formed inside the cavity 410, and the phase-shift dielectric block 430 and the phase-shift circuit board 420 are both disposed in the inner cavity of the cavity 410. The phase-shifting dielectric block 430 can move along the length direction of the cavity 410 in the inner cavity, and the phase of the electrical signal at the output end of the phase-shifting network is changed by changing the relative position of the phase-shifting dielectric block 430 (that is, changing the length of the phase-shifting dielectric block 430 covering the phase-shifting circuit board 420 to change the phase of the input/output port of the phase-shifting network), so as to cause the phase change of the microwave signal, thereby realizing the phase-shifting function. Of course, the inner wall of the inner cavity may also be provided with a positioning groove or a mounting groove for conveniently mounting the phase-shifting circuit board 420, and the like, which is not described again.

The end of the cavity 410 may further have a groove, and in fig. 2, an end of the cavity 410 opposite to the second through hole 411 has the groove, which may be an arc-shaped groove and will not be described in detail.

It should be noted that the distribution position and material of the phase-shift dielectric block 430 may affect the phase of the signal output, and those skilled in the art can design the distribution position and material according to the antenna principle and the function purpose to be achieved, and will not be described herein again.

Further, the connection portion 421 may be a protruding strip protruding from the phase shift circuit board 420, the protruding strip is integrated with a port structure of the input/output equal line on the phase shift circuit board 420, and the protruding strip passes through the second through hole 411 to reach the reflection plate 100, and further passes through the first through hole of the reflection plate 100 to reach the power distribution network 200, so as to be inserted into the butt joint portion of the power distribution network 200, thereby realizing the butt joint of the two portions of the phase shift network and the power distribution network 200, which is not described again.

It should be noted that the cavity 410 belongs to the general name of those skilled in the art, and the inner cavity is not a closed inner cavity, but may be a through cavity, so that the cavity 410 forms a similar tubular structure, and since the cavity 410 is further provided with the second through hole 411 in the present application, the cavity 410 is different from the existing structure, and is not described again.

Referring to FIG. 6, the phase shifting circuit board 420 is a strip line structure, which is a copper strip line disposed between two conductive planes. The thickness, width, dielectric constant of the dielectric, distance between two conductive planes and characteristic impedance of the line can all be adjusted and controlled according to the actual needs of the person skilled in the art. Because the two sides of the strip line are provided with the ground layers, the impedance is easy to control, and the anti-interference capability is strong, which is not described in detail herein.

Referring to fig. 2, the inner wall of the inner cavity is further provided with a limiting flange 412, and the limiting flange 412 is disposed along the length direction of the cavity 410 to limit the movement of the phase-shifting dielectric block 430.

Because the phase-shift dielectric block 430 may not be installed at a predetermined position to move when sliding in the inner cavity of the cavity 410, the position and posture of the phase-shift dielectric block 430 when sliding in the inner cavity of the cavity 410 is limited by the limiting flange 412, so that the phase-shift dielectric block 430 can only move back and forth along the length direction of the cavity 410, and further description is omitted.

Further, as shown in fig. 2, two limiting flanges 412 are oppositely arranged on the inner wall of the inner cavity, and the limiting flanges 412 are arranged to protrude from the inner wall of the inner cavity, so as to achieve a better limiting technical effect.

Referring to FIG. 2, two phase-shift dielectric blocks 430 are provided, and the phase-shift circuit board 420 is located between the two phase-shift dielectric blocks 430.

Referring to fig. 2, the second through hole 411 is a through groove formed along the length direction of the cavity 410, and the phase shift circuit board 420 is provided with at least one connection portion 421.

In fig. 2, since the position-limiting flanges 412 are disposed on two opposite sides of the inner wall of the inner cavity, at this time, the two position-limiting flanges 412 form a gap, which is also equivalent to a through slot disposed on the cavity 410 along the length direction of the cavity 410, and the through slot is also equivalent to the second through hole 411 (at this time, the cavity 410 forms a semi-open structure), so as to meet the requirement of extending one connecting portion 421 (for example, at least one connecting portion 421 is disposed on one phase-shift circuit board 420, and if there are at least two phase-shift circuit boards 420, there are more connecting portions 421, thereby facilitating assembly and production).

When the second through hole 411 is a through groove formed along the length direction of the cavity 410, the connecting portion 421 can be conveniently connected with the lower end of the power distribution network 200 in a welding manner, so that the power distribution network 200 and the phase shift network form an integrated design, the power distribution network can be suitable for a reflow soldering process, the assembly complexity is reduced, and the anti-interference capability of the phase shift network can be ensured.

Referring to fig. 3, the power distribution network 200 includes a power divider 210 and a phase distribution network, the phase distribution network is electrically connected to the power divider 210, and both the radiation oscillator and the phase shift network are electrically connected to the power divider 210.

The power divider 210 may be provided with at least one phase matching network for adjusting the phase of the signal arriving at the radiating element.

As shown in fig. 3, the power divider 210 may be a T-type power divider 210, and the power dividing network 200 is electrically connected to the feeding post 32011 through the T-type power divider 210 and the phase distribution line 220, and those skilled in the art can select and arrange the power divider according to actual needs, and complete specific connections between the power divider 210 and the phase distribution network, and details are not repeated.

In one embodiment, one end of the phase distribution network is electrically connected to the power divider 210, and the other end of the phase distribution network is connected to the output port of the power divider network 200; the feed column 320 of the radiation oscillator is electrically connected with the power dividing network 200 (power divider 210); the phase shifting network may be welded to the lower end of the reflection plate 100 and electrically connected to the power distribution network 200 through a connection portion 421 (an input/output port of the phase shifting network).

The phase distribution network belongs to a part of the power distribution network 200, namely the phase distribution network and the power distribution network 200 are integrally arranged and are simultaneously arranged below the radiation oscillator, so that cables required by conversion connection and the like are omitted, and meanwhile, the phase distribution network, the power distribution network 200 (microstrip line) and the lower end surface of the feed column 320 of the radiation oscillator are positioned on the same plane, so that the implementation of a reflow soldering process is facilitated, the integral welding can be realized, and the producibility is improved.

Further, referring to fig. 3, the phase matching network has a phase matching line 220, and the phase matching line 220 is used for adjusting the phase of the signal reaching the radiation oscillator terminal.

The power division network 200 has a power division input port 211 and a power division output port, where the power division input port 211 is used for receiving signals, and the power division output port is used for being connected with the connection portion 421 of the phase shift network.

Referring to fig. 1 to 3, the radiating element includes at least one radiating unit 300, the radiating unit 300 includes an element radiating panel 310 and a feeding column 320, one end of the feeding column 320 is electrically connected to the power divider 210, and the other end of the feeding column 320 is electrically connected to the element radiating panel 310.

The dipole radiation panel 310 may be disposed parallel to the reflection plate 100 and supported on the power distribution network 200 through the feeding post 320, so as to electrically connect the dipole radiation panel 310 and the power distribution network 200.

The power distribution network 200 has a feeding port corresponding to the radiating element 300 to be correspondingly connected to the feeding post 320, which is not described again.

Referring to fig. 1 to 3, at least two radiation units 300 are disposed, and the radiation units 300 are disposed on the reflection plate 100 at intervals.

The plurality of radiation units 300 are provided to form an antenna array structure, and those skilled in the art can perform specific arrangement according to actual needs to meet the actual needs, which is not described herein again.

In one embodiment, the power divider 210 includes a power dividing circuit board, the power dividing circuit board is provided with a third through hole, the third through hole is disposed corresponding to the first through hole, and the connection portion 421 passes through the second through hole 411 and the first through hole and then is plugged into or soldered to the power dividing circuit board through the third through hole.

In order to facilitate the direct connection between the power distribution network 200 and the phase shift network, the power distribution circuit board of the power divider 210 is provided with a third through hole, which may be a plug hole or a welding hole. When the third through hole is a plugging hole, the connection portion 421 (e.g., an input/output connector of the phase shift network) passes through the second through hole 411 on the cavity 410, passes through the first through hole of the reflection plate 100, and is further plugged through the third through hole; when the third through hole is a welding hole, the connection portion 421 passes through the second through hole 411 on the cavity 410 and further welds with the hole wall of the third through hole through the first through hole of the reflection plate 100, so as to achieve the electrical connection between the phase shift network and the power distribution network 200, which is not described in detail.

Of course, the first through hole, the second through hole 411 and the third through hole may be only slotted structures, and the slotted structures are through grooves to meet the needs of passing, inserting or welding of the connection portion 421, and are not described again.

In one embodiment, the reflector 100, the power distribution network 200, the radiating element and the phase shifting network are integrally welded together.

During production, the reflecting plate 100, the power distribution network 200, the radiation oscillator and the phase shift network can be firstly pasted and then welded and processed in a reflow soldering mode, assembly is simple and convenient, and assembly efficiency is greatly improved.

In an embodiment, the cavity 410 of the phase shift network is welded to the pad of the power distribution network 200, so as to fix the phase shift network on the power distribution network 200, and at this time, the reflecting plate 100 should reserve a gap capable of leaking out of the pad of the power distribution network 200 (power distribution circuit board), so that the cavity 410 can be welded to the power distribution network 200, which is not described herein again.

In one embodiment, the antenna system includes a reflection plate 100, a power distribution network 200 is disposed on an upper portion of the reflection plate 100, ten radiating elements are disposed on an upper portion of the power distribution network 200, and a phase shift network is disposed on a lower portion of the reflection plate 100, and the phase shift network includes two dielectric phase shift structures 400, and the phase shift network is electrically connected to the power distribution network 200 through a connection portion 421.

Specifically, the power divider network 200 may include a power divider 210, where the power divider 210 is a T-shaped power divider 210, and the power divider 210 is electrically connected to a phase-shift input port 442 (a connection portion 421) on the phase-shift circuit board 420 through a power-division output port, and forms a 1-to-7 phase-shift network structure. During operation, the power divider network 200 receives an electrical signal through the power divider input port 211 thereon, and performs network power distribution through the T-type power divider 210; then, the signal enters the phase shift network through the phase shift input port 442, and the phase shift network feeds the electrical signal into the corresponding radiation unit 300 through the output port thereon; the phase shift network implements the port phase change of the 1-to-7 network by moving the phase shift dielectric block 430, which is not described in detail.

The antenna system simplifies the feed network among the reflecting plate 100, the power dividing network 200, the radiation oscillator and the phase shifting network, reduces the connection conversion of transmission lines and the like, particularly reduces the number of welding points of the antenna system, greatly reduces the processing difficulty and improves the reliability of the antenna system.

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 represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An antenna system, comprising:

the reflecting plate is provided with a first through hole;

the power distribution network is arranged on one side of the reflecting plate;

the radiation oscillator is arranged on one side of the reflecting plate and is electrically connected with the power distribution network; and

the phase shifting network is arranged on the other side of the reflecting plate and provided with a connecting part, and the connecting part is electrically connected with the power distribution network through the first through hole.

2. The antenna system of claim 1, wherein the phase shifting network comprises dielectric phase shifting structures, the dielectric phase shifting structures being provided with at least one, the dielectric phase shifting structures being provided with the connection portion.

3. The antenna system of claim 2, wherein the dielectric phase shift structure comprises a cavity, a phase shift circuit board and a phase shift dielectric block, the cavity is formed with an inner cavity, the phase shift circuit board and the phase shift dielectric block are both disposed in the inner cavity, the cavity is further provided with a second through hole communicated with the inner cavity, the connecting portion is disposed on the phase shift circuit board, the connecting portion is electrically connected with the power distribution network via the second through hole and the first through hole, and the phase shift dielectric block can move in the inner cavity along the length direction of the cavity.

4. The antenna system of claim 3, wherein the inner wall of the inner cavity is further provided with a limiting flange, and the limiting flange is arranged along the length direction of the cavity to limit the movement of the phase-shifting dielectric block;

the phase-shifting circuit board is arranged between the two phase-shifting dielectric blocks.

5. The antenna system of claim 3, wherein the second through hole is a through slot formed along a length direction of the cavity, and the phase-shift circuit board is provided with at least one of the connecting portions.

6. The antenna system of any of claims 3-5, wherein the power divider network comprises a power divider and a phase divider network, the phase divider network is electrically connected to the power divider, and the radiating element and the phase shifting network are both electrically connected to the power divider.

7. The antenna system of claim 6, wherein the radiating element comprises at least one radiating element, the radiating element comprises an element radiating panel and a feeding post, one end of the feeding post is electrically connected with the power divider, and the other end of the feeding post is electrically connected with the element radiating panel.

8. The antenna system of claim 7, wherein at least two of the radiating elements are provided, and the radiating elements are provided at intervals on the reflection plate.

9. The antenna system of claim 6, wherein the power divider comprises a power dividing circuit board, the power dividing circuit board is provided with a third through hole, the third through hole is disposed corresponding to the first through hole, and the connecting portion is plugged into or soldered to the power dividing circuit board through the second through hole and the first through hole and then through the third through hole.

10. The antenna system of claim 6, wherein the reflector plate, the power splitting network, the radiating element, and the phase shifting network are integrally welded together.