Antenna System

Abstract

The present invention discloses an antenna system, including a reflector, the reflector is provided with a first through hole; a power division network, the power division network is provided on one side of the reflector; a radiation vibrator, the radiation vibrator is provided on one side of the reflector, and the radiation vibrator is electrically connected to the power division network; and a phase shift network, the phase shift network is provided on the other side of the reflector, the phase shift network is provided with a connection part, and the connection part is electrically connected to the power division network via the first through hole. In the antenna system, the power division network and the phase shift network are respectively provided on both sides of the reflector, and the reflector is provided with a first through hole, so that the connection part of the phase shift network can be directly electrically connected to the power division network through the first through hole, eliminating the cables required for phase shifting and matching, reducing the welding points, simplifying the assembly process, and avoiding the network mismatch and intermodulation problems caused by too many welding points.

Description

Technical Field

[0001] The present invention relates to the technical field of communication antennas, and in particular to an antenna system. Background Art

[0002] With the continuous development of mobile communication technology, electrically-adjustable antennas play an increasingly important role in network coverage. However, traditional electrically-adjustable base station antennas are heavy, and the connection network between components is also relatively complex, which can easily lead to a series of problems. These problems mainly include: many assembly processes and poor manufacturability; many antenna solder joints between components, which can easily lead to network mismatch and intermodulation problems. Summary of the invention

[0003] Based on this, it is necessary to provide an antenna system that is easy to assemble and avoids problems such as network mismatch caused by multiple solder joints.

[0004] The technical solution is as follows:

[0005] An antenna system includes a reflector, the reflector is provided with a first through hole; a power division network, the power division network is provided on one side of the reflector; a radiating element, the radiating element is provided on one side of the reflector and is electrically connected to the power division network; and a phase shifting network, the phase shifting network is provided on the other side of the reflector and is provided with a connecting portion, and the connecting portion is electrically connected to the power division network via the first through hole.

[0006] In the above antenna system, the power division network and the phase shift network are respectively arranged on both sides of the reflector, and a first through hole is provided on the reflector, so that the connecting part of the phase shift network can be directly electrically connected to the power division network through the first through hole, eliminating the cables required for phase shifting and phase matching, reducing welding points, simplifying the assembly process, and avoiding network mismatch and intermodulation problems caused by too many welding points.

[0007] The technical solution is further described below:

[0008] In one embodiment, the phase shift network includes a dielectric phase shift structure, the dielectric phase shift structure is provided with at least one, and the dielectric phase shift structure is provided with a connecting portion.

[0009] In one embodiment, the dielectric phase-shifting structure includes a cavity, a phase-shifting circuit board and a phase-shifting dielectric block. The cavity forms an inner cavity. The phase-shifting circuit board and the phase-shifting dielectric block are both arranged in the inner cavity. The cavity is also provided with a second through hole communicating with the inner cavity. The connecting part is arranged on the phase-shifting circuit board. The connecting part is electrically connected to the power division network via the second through hole and the first through hole. The phase-shifting dielectric block can move in the inner cavity along the length direction of the cavity.

[0010] In one embodiment, the inner wall of the inner cavity is further provided with a limiting flange, which is arranged along the length direction of the cavity to limit the movement of the phase shifting medium block;

[0011] Two phase-shifting dielectric blocks are provided, and the phase-shifting circuit board is located between the two phase-shifting dielectric blocks.

[0012] In one of the embodiments, the second through hole is a through slot opened along the length direction of the cavity, and at least one connecting portion is provided on the phase-shifting circuit board.

[0013] In one embodiment, the power division 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.

[0014] In one embodiment, the radiating element includes at least one radiating unit, the radiating unit includes an element radiating panel and a feeding pole, one end of the feeding pole is electrically connected to the power divider, and the other end of the feeding pole is electrically connected to the element radiating panel.

[0015] In one embodiment, at least two radiation units are provided, and the radiation units are arranged on the reflection plate at intervals.

[0016] In one embodiment, the power divider includes a power divider circuit board, which is provided with a third through hole, the third through hole is arranged corresponding to the first through hole, and the connecting part is connected or welded to the power divider circuit board through the third through hole after passing through the second through hole and the first through hole.

[0017] In one embodiment, the reflector, the power division network, the radiation oscillator and the phase shift network are welded together. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the antenna system in the embodiment;

[0019] Figure 2 for Figure 1 A cross-sectional structural diagram of an antenna system in an embodiment;

[0020] Figure 3 for Figure 1 A top view of the antenna system in the embodiment;

[0021] Figure 4 for Figure 1 A front view of the structure of the antenna system in the embodiment without the cavity;

[0022] Figure 5 for Figure 1 A top view of the antenna system in the embodiment without the radiation unit;

[0023] Figure 6 for Figure 1 A front view of a portion of the antenna system in an embodiment.

[0024] Notes on the attached drawings:

[0025] 100, reflector; 200, power division network; 210, power divider; 211, power division input port; 220, phase matching line; 300, radiation unit; 310, oscillator radiation panel; 320, feeding column; 400, dielectric phase shift structure; 410, cavity; 411, second through hole; 412, limiting flange; 420, phase shift circuit board; 421, connecting part; 430, phase shift dielectric block; 441, phase shift output port; 442, phase shift input port. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0027] It should be noted that when an element is referred to herein as being "fixed" to another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] Please refer to Figures 1 to 6 An antenna system includes a reflector 100, which is provided with a first through hole; a power division network 200, which is provided on one side of the reflector 100; a radiation oscillator, which is provided on one side of the reflector 100 and is electrically connected to the power division network 200; and a phase shift network, which is provided on the other side of the reflector 100 and is provided with a connecting portion 421, which is electrically connected to the power division network 200 via the first through hole.

[0030] In the antenna system of this embodiment, the power division network 200 and the phase shift network are respectively arranged on both sides of the reflector 100, and the reflector 100 is provided with a first through hole, so that the connecting portion 421 of the phase shift network can be directly electrically connected to the power division network 200 through the first through hole, eliminating the cables required for phase shifting and phase matching, reducing welding points, simplifying the assembly process, and avoiding network mismatch and intermodulation problems caused by too many welding points.

[0031] The reflector 100 may be a metal plate, which is used to enhance the directivity of the antenna. Figure 1 As shown, both ends of the reflector 100 may also be provided with bent portions bent toward the same side. The first through hole is provided to meet the need for the connection portion 421 of the phase shift network to pass through, so that the connection portion 421 can pass through the first through hole from the other side of the reflector 100 to the one side of the reflector 100, thereby realizing the function of electrically connecting the connection portion 421 with the power division network 200, that is, realizing the function of directly connecting the phase shift network with the power division network 200, which will not be described in detail.

[0032] The radiating vibrator is a component used to convert current energy into electromagnetic energy and radiate it, or receive electromagnetic energy and convert it into current energy, and can be an array structure. The radiating vibrator is also arranged on the reflector 100 and is electrically connected to the power division network 200. The power division network 200 is used to distribute network power. The phase shifting network is used to change the phase so that the electrical signal is fed into the radiating vibrator. Those skilled in the art can arrange it according to specific needs.

[0033] The phase shifting network is used for phase adjustment and is arranged on the other side of the reflector 100. The phase shifting network has a connecting portion 421, which is used to realize the electrical connection between the phase shifting network and the power division network 200. For example, the phase shifting network and the power division network 200 can be directly connected by plugging or welding, thereby avoiding network mismatch and intermodulation problems caused by a large number of welding points, making production and assembly more convenient, and improving production efficiency and yield rate.

[0034] like Figure 1 As shown, the power division network 200 is closely arranged on the upper surface of the reflecting plate 100, the radiating oscillator is arranged on the power division network 200, and the phase shifting network is arranged on the lower surface of the reflecting plate 100. The upper end of the phase shifting network has a connecting portion 421, and the connecting portion 421 passes through the first through hole to be electrically connected to the bottom end of the power division network 200.

[0035] Furthermore, the connection portion 421 may be a connection port on the phase-shifting network, which may be directly plugged into a corresponding port on the power division network 200 or connected by welding (such as by reflow soldering), which will not be described in detail.

[0036] This direct plug-in or welding method allows the phase shift network and the power division network 200 to be assembled separately and then assembled as an integrated whole, thereby reducing the production process and improving production efficiency and yield.

[0037] Please refer to Figure 1 , Figure 2 and Figure 4The phase shift network includes a dielectric phase shift structure 400 , the dielectric phase shift structure 400 is provided with at least one, and the dielectric phase shift structure 400 is provided with a connecting portion 421 .

[0038] The phase shift network has at least one dielectric phase shift structure 400 to meet the need for phase shift. Figure 1 In the embodiment, the antenna system has four dielectric phase shifting structures 400 .

[0039] Please refer to Figure 1 and Figure 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 is formed with an inner cavity. The phase shift circuit board 420 and the phase shift dielectric block 430 are both arranged in the inner cavity. The cavity 410 is also provided with a second through hole 411 communicating with the inner cavity. The connecting part 421 is arranged on the phase shift circuit board 420. The connecting part 421 is electrically connected to the power division network 200 via the second through hole 411 and the first through hole. The phase shift dielectric block 430 can move in the inner cavity along the length direction of the cavity 410.

[0040] The cavity 410 can be a rectangular structure or an arc structure. The cavity 410 forms an inner cavity. The phase-shifting dielectric block 430 and the phase-shifting circuit board 420 are both arranged in the inner cavity of the cavity 410. The phase-shifting dielectric block 430 can move in the inner cavity along the length direction of the cavity 410. By changing the relative position of the phase-shifting dielectric block 430 (that is, changing the length of the phase-shifting dielectric block 430 covered on the phase-shifting circuit board 420 to change the phase of the input and output ports of the phase-shifting network), the phase of the output end electrical signal of the phase-shifting network is changed to cause the phase change of the microwave signal and realize the phase shifting function. Of course, the inner wall of the inner cavity can also be provided with a positioning groove or a mounting groove for facilitating the installation of the phase-shifting circuit board 420, which will not be described in detail.

[0041] The end of the cavity 410 may also be provided with a groove. Figure 2 In the embodiment, the groove is provided at one end of the cavity 410 opposite to the second through hole 411, and the groove may be an arc-shaped groove, which will not be described in detail.

[0042] It should be noted that the distribution position and material selection of the phase-shifting dielectric block 430 may affect the phase of the signal output. As for its distribution position and material selection, those skilled in the art may make specific designs according to the antenna principle and the functional purpose to be achieved, which will not be elaborated here.

[0043] Furthermore, the connecting portion 421 can be a convex strip protruding from the phase-shifting circuit board 420, on which the line port structures such as input and output on the phase-shifting circuit board 420 are integrated, and the convex strip passes through the second through hole 411 to reach the reflecting plate 100, and further passes through the first through hole of the reflecting plate 100 to reach the power division network 200, thereby being inserted into the docking part of the power division network 200, thereby realizing the docking of the two parts of the phase-shifting network and the power division network 200, which will not be repeated.

[0044] It should be noted that cavity 410 is a common name used by those skilled in the art, and the inner cavity is not a closed inner cavity, but may be a through cavity, so that cavity 410 forms a tubular structure. Since cavity 410 in the present application is also provided with a second through hole 411, cavity 410 is different from the existing structure and will not be described in detail.

[0045] Please refer to Figure 6 The phase shift circuit board 420 is a stripline structure, and the stripline is a copper strip line placed in the middle of a dielectric between two layers of conductive planes. The thickness, width, dielectric constant of the medium, distance between the two layers of conductive planes, and characteristic impedance of the stripline can be adjusted and controlled according to the actual needs of those skilled in the art. Since there are ground layers on both sides of the stripline, the impedance is easy to control and the anti-interference ability is strong, which will not be repeated here.

[0046] Please refer to Figure 2 The inner wall of the inner cavity is also provided with a limiting flange 412, which is arranged along the length direction of the cavity 410 to limit the movement of the phase shifting medium block 430.

[0047] Since the phase-shifting dielectric block 430 may not be able to move to the predetermined position when sliding in the inner cavity of the cavity 410, a limiting flange 412 is provided to limit the position of the phase-shifting dielectric block 430 when sliding in the inner cavity of the cavity 410, so as to ensure that the phase-shifting dielectric block 430 can only move forward and backward along the length direction of the cavity 410, which will not be described in detail.

[0048] Furthermore, if Figure 2 As shown, two limiting flanges 412 are arranged opposite to each other 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 to achieve a better limiting technical effect.

[0049] Please refer to Figure 2 Two phase-shifting dielectric blocks 430 are provided, and the phase-shifting circuit board 420 is located between the two phase-shifting dielectric blocks 430 .

[0050] Please refer to Figure 2 The second through hole 411 is a through slot opened along the length direction of the cavity 410 , and at least one connecting portion 421 is provided on the phase shift circuit board 420 .

[0051] Figure 2 In the embodiment, since the limiting flanges 412 are arranged on opposite sides of the inner wall of the inner cavity, at this time, the two limiting flanges 412 form a gap, which is also equivalent to a through groove opened on the cavity 410 along the length direction of the cavity 410, and the through groove is also the second through hole 411 (at this time, the cavity 410 forms a semi-open structure) to meet the extension need of a connecting portion 421 (such as at least one connecting portion 421 is provided on a phase shifting circuit board 420, and if there are at least two phase shifting circuit boards 420, there are more connecting portions 421, which is convenient for assembly and production).

[0052] When the second through hole 411 is a through groove opened along the length direction of the cavity 410, the connecting portion 421 can be conveniently welded to the lower end of the power division network 200 by welding, so that the power division network 200 and the phase shifting network form an integrated design, which is suitable for the reflow soldering process, reduces the assembly complexity, and can ensure the anti-interference ability of the phase shifting network.

[0053] Please refer to Figure 3 The power division network 200 includes a power divider 210 and a phase matching network. The phase matching network is electrically connected to the power divider 210 . The radiation oscillator and the phase shifting network are both electrically connected to the power divider 210 .

[0054] The power divider 210 may be provided with at least one phase matching network for adjusting the phase of the signal reaching the radiating oscillator.

[0055] like Figure 3 As shown, the power divider 210 can be a T-type power divider 210, and the power division network 200 is electrically connected to the feeding pole 32011 through the T-type power divider 210 and the phase matching line 220. Technical personnel in this field can select and arrange it according to actual needs, and complete the specific connection between the power divider 210 and the phase matching network, etc., which will not be repeated here.

[0056] In one embodiment, one end of the phase matching network is electrically connected to the power divider 210, and the other end of the phase matching network is connected to the output port of the power division network 200; the feeding column 320 of the radiating oscillator is electrically connected to the power division network 200 (power divider 210); the phase shifting network can be welded to the lower end of the reflecting plate 100, and electrically connected to the power division network 200 through the connecting part 421 (input and output ports of the phase shifting network).

[0057] The phase matching network is a part of the power division network 200, that is, the phase matching network and the power division network 200 are integrated and arranged under the radiating vibrator, eliminating the cables required for conversion connections, etc. At the same time, the phase matching network, the power division network 200 (microstrip line) and the lower end surface of the feeding column 320 of the radiating vibrator are in the same plane, which is also conducive to the implementation of the reflow soldering process, and can be welded as a whole, thereby improving productivity.

[0058] For further information, please refer to Figure 3 The phase matching network has a phase matching line 220, and the phase matching line 220 is used to adjust the phase of the signal reaching the radiation oscillator end.

[0059] The power division network 200 has a power division input port 211 and a power division output port. The power division input port 211 is used to receive signals, and the power division output port is used to connect to the connection part 421 of the phase shift network.

[0060] Please refer to Figures 1 to 3 The radiating element includes at least one radiating unit 300 , and 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 .

[0061] The dipole radiation panel 310 can be arranged in parallel with the reflection plate 100 and supported on the power division network 200 through the feeding column 320 to achieve electrical connection between the dipole radiation panel 310 and the power division network 200 .

[0062] The power division network 200 has a feeding port corresponding to the radiation unit 300 so as to be connected to the feeding pole 320 accordingly, which will not be described in detail.

[0063] Please refer to Figures 1 to 3 At least two radiation units 300 are provided, and the radiation units 300 are arranged on the reflection plate 100 at intervals.

[0064] There are multiple radiation units 300 to form an antenna array structure. Those skilled in the art can make specific arrangements according to actual needs to meet actual needs, which will not be described in detail.

[0065] In one embodiment, the power divider 210 includes a power divider circuit board, which is provided with a third through hole, the third through hole is arranged corresponding to the first through hole, and the connecting part 421 is connected or welded to the power divider circuit board through the third through hole after passing through the second through hole 411 and the first through hole.

[0066] In order to facilitate the direct connection between the power division network 200 and the phase shift network, the power division circuit board of the power divider 210 is provided with a third through hole, which can be a plug-in hole or a welding hole. When the third through hole is a plug-in hole, the connection part 421 (such as the input and output connector of the phase shift network) passes through the second through hole 411 on the cavity 410, and through the first through hole of the reflector 100, and further through the third through hole for plugging; when the third through hole is a welding hole, the connection part 421 passes through the second through hole 411 on the cavity 410, and through the first through hole of the reflector 100, and further welded to the hole wall of the third through hole, thereby realizing the electrical connection between the phase shift network and the power division network 200, which will not be repeated.

[0067] Of course, the first through hole, the second through hole 411 and the third through hole may all be just slotted structures, and the slotted structures are through slots to meet the need of the connection part 421 to pass through, plug or weld, which will not be described in detail.

[0068] In one embodiment, the reflector 100, the power division network 200, the radiation oscillator and the phase shift network are welded together.

[0069] During production, the reflector 100, the power division network 200, the radiation oscillator and the phase shift network can be mounted first, and then the processing can be completed by soldering at one time by reflow soldering. The assembly is simple and convenient, which greatly improves the assembly efficiency.

[0070] In one embodiment, the cavity 410 of the phase-shifting network is welded to the pads of the power division network 200, thereby fixing the phase-shifting network on the power division network 200. At this time, the reflector 100 should reserve a gap to allow the pads of the power division network 200 (power division circuit board) to leak out, so that the cavity 410 can be welded to the power division network 200, which will not be repeated.

[0071] In one embodiment, the antenna system includes a reflector 100, a power division network 200 is provided on the upper part of the reflector 100, ten radiating elements are provided on the upper part of the power division network 200, and a phase shift network is provided on the lower part of the reflector 100. The phase shift network includes two dielectric phase shift structures 400, and the phase shift network is electrically connected to the power division network 200 through a connecting part 421.

[0072] Specifically, the power division network 200 includes a power divider 210, which is a T-type power divider 210. The power divider 210 is electrically connected to the phase-shift input port 442 (connecting portion 421) on the phase-shift circuit board 420 through the power division output port, and forms a 1-to-7 phase-shift network structure. When working, the power division network 200 receives an electrical signal through the power division 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 realizes the port phase change of the 1-to-7 network by moving the phase-shift medium block 430, which will not be described in detail.

[0073] The antenna system provided in the present application simplifies the feeding network between the reflector 100, the power division network 200, the radiating oscillator and the phase shifting network, reduces the connection conversion of the transmission line, etc., and especially reduces the number of welding points of the antenna system, greatly reducing the processing difficulty, thereby improving the reliability of the antenna system.

[0074] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An antenna system, characterized in that: include: A reflective plate, wherein the reflective plate is provided with a first through hole; A power division network, the power division network is arranged on one side of the reflector, and the power division network includes a power divider; a radiation vibrator, the radiation vibrator being disposed on one side of the reflection plate and electrically connected to the power division network; and A phase shift network, the phase shift network is arranged on the other side of the reflector, the phase shift network is provided with a connecting portion, the connecting portion is electrically connected to the power division network via the first through hole, the phase shift network comprises a cavity, a phase shift circuit board and a phase shift dielectric block, the cavity forms 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 communicating with the inner cavity, the connecting portion is electrically connected to the power division network via the second through hole and the first through hole, the second through hole is a through slot opened along the length direction of the cavity, and at least one connecting portion is provided on the phase shift circuit board; The power divider includes a power divider circuit board, and the power divider circuit board is provided with a third through hole, and the third through hole is arranged corresponding to the first through hole. The connecting part passes through the second through hole and the first through hole and then through the third through hole to be plugged or welded with the power divider circuit board, and the first through hole and the third through hole are both through grooves opened along the length direction of the cavity.

2. The antenna system according to claim 1, characterized in that The phase shift network comprises a dielectric phase shift structure, at least one dielectric phase shift structure is provided, and the dielectric phase shift structure is provided with the connecting portion.

3. The antenna system according to claim 1, characterized in that The reflective plate is a metal plate.

4. The antenna system according to claim 3, characterized in that: The inner wall of the inner cavity is also 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 medium block; There are two phase-shifting dielectric blocks, and the phase-shifting circuit board is located between the two phase-shifting dielectric blocks.

5. The antenna system according to any one of claims 1 to 4, characterized in that: The power division network further includes 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.

6. The antenna system according to claim 5, characterized in that: The power divider is a T-type power divider.

7. The antenna system according to claim 5, characterized in that: The radiating element includes at least one radiating unit, and the radiating unit includes an element radiating panel and a feeding column, one end of the feeding column is electrically connected to the power divider, and the other end of the feeding column is electrically connected to the element radiating panel.

8. The antenna system according to claim 5, characterized in that There are at least two radiation units, and the radiation units are arranged on the reflection plate at intervals.

9. The antenna system according to claim 5, characterized in that: The cavity of the phase shift network is fixed to the power division network by welding with the pads of the power division network; the reflector is reserved with a gap to expose the pads of the power division network.

10. The antenna system according to claim 5, characterized in that The reflector, the power division network, the radiation oscillator and the phase shift network are integrally welded.

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