Base station antenna circular arc dielectric phase shifter and base station

Abstract

The present invention provides a base station antenna arc dielectric phase shifter and a base station, wherein the base station antenna arc dielectric phase shifter includes a phase shift circuit board and a phase shift dielectric board, a lower shell and a cover body, the lower shell body having a placement cavity, a guide groove provided on the arc-shaped side wall of the lower shell body, a first fixing portion provided on the lower shell body, and a second fixing portion matching the first fixing portion provided on the cover body; the phase shift circuit board is arranged in the placement cavity, the phase shift circuit board has a phase shift circuit, the phase shift circuit has a port connected to the outside, one end of a cable is fixed to the port, and the other end of the cable passes through the side plane of the lower shell body; the phase shift dielectric board includes an upper phase shift dielectric board and a lower phase shift dielectric board mounted on the upper and lower surfaces of the phase shift circuit board, the upper phase shift dielectric board and the lower phase shift dielectric board are respectively provided with a shift block extending out of the guide groove, and a synchronization member is provided between the upper phase shift dielectric board and the lower phase shift dielectric board, the synchronization member is used to keep the upper phase shift dielectric board and the lower phase shift dielectric board in a synchronized state.

Description

Technical Field

[0001] The present invention relates to the field of antenna equipment, and in particular to a base station antenna circular arc dielectric phase shifter and a base station. Background Art

[0002] The circular arc phase shifter structure in the base station antenna uses coupling between PCB boards. In principle, the physical length of the PCB line changes to achieve antenna amplitude and phase changes and change the electrical downtilt angle. Maintaining consistency in the coupling gap design and process between the two is difficult, resulting in a relatively high performance failure rate for the base station antenna. Many adverse issues, such as insufficient third-order intermodulation stability, have led to an increase in the defective rate of the base station antenna.

[0003] The dielectric phase shifters in base station antennas utilize a rectangular dielectric sliding mechanism. The principle is to change the dielectric constant within the phase shifter to achieve amplitude and phase shifts. This method is simple to implement and easy to manufacture, improving base station antenna phase shifting performance and third-order intermodulation pass rate. Antenna performance consistency is significantly improved compared to circular phase shifters. However, dielectric phase shifters have a relatively large phase shift amount, resulting in phase shifting accuracy errors and making the internal layout of multi-band antennas difficult.

[0004] In order to solve the above problems, the present invention provides a base station antenna circular arc dielectric phase shifter and a base station. Summary of the Invention

[0005] In order to solve the problems in the prior art, the present invention provides a base station antenna circular arc dielectric phase shifter and a base station.

[0006] The technical solutions of the present invention are as follows:

[0007] A base station antenna circular arc dielectric phase shifter, comprising a phase shift housing, a phase shift circuit board and a phase shift dielectric plate;

[0008] The phase shift housing includes a lower housing and a cover. The lower housing has a placement cavity. A guide groove is provided on the arc-shaped side wall of the lower housing. The lower housing is provided with a first fixing portion. The cover is provided with a second fixing portion that cooperates with the first fixing portion.

[0009] The phase-shifting circuit board is disposed in the placement cavity, and has a phase-shifting circuit on the phase-shifting circuit board. The phase-shifting circuit has a port connected to the outside, one end of a cable is fixedly connected to the port, and the other end of the cable passes through the side plane of the lower shell;

[0010] The phase-shifting dielectric plate includes an upper phase-shifting dielectric plate mounted on the upper surface of the phase-shifting circuit board and a lower phase-shifting dielectric plate mounted on the lower surface of the phase-shifting circuit board. The upper phase-shifting dielectric plate and the lower phase-shifting dielectric plate are respectively provided with a shifting block extending out of the guide slot. A synchronizing member is provided between the upper phase-shifting dielectric plate and the lower phase-shifting dielectric plate. The synchronizing member is used to synchronize the upper phase-shifting dielectric plate with the lower phase-shifting dielectric plate.

[0011] In this technical solution, an upper phase-shifting dielectric plate and a lower phase-shifting dielectric plate are arranged on the upper and lower sides of a phase-shifting circuit board, a synchronizing member connects the upper phase-shifting dielectric plate and the lower phase-shifting dielectric plate, and the upper phase-shifting dielectric plate, the lower phase-shifting dielectric plate, and the phase-shifting circuit board are placed in a placement cavity. The second fixing portion cooperates with the first fixing portion to enable the cover body and the lower shell to form a phase-shifting shell. The dielectric constant can be changed by changing the shift block that exposes the phase-shifting shell, thereby changing the electrical downtilt angle of the antenna.

[0012] On the basis of the above solution and as a preferred solution of the above solution, an arc-shaped block is provided on the inner surface of the lower shell for supporting the phase-shifting circuit board.

[0013] In this technical solution, the arc block is fitted with the arc side surface of the lower shell and is used to place the phase-shifting circuit board.

[0014] On the basis of the above solution and as a preferred solution of the above solution, a plurality of limiting columns are provided on the inner bottom surface of the lower housing to limit the movement of the phase-shifting circuit board, a support platform is provided on the limiting columns, and threaded holes are provided on the limiting columns;

[0015] The phase-shifting circuit board is provided with a limiting hole corresponding to each of the limiting pillars.

[0016] In this technical solution, the limiting holes on the phase-shifting circuit board are aligned with the limiting posts and are sleeved on the limiting posts. The supporting platform of the limiting posts is used to support the phase-shifting circuit board and maintain its stability.

[0017] On the basis of the above solution and as a preferred solution of the above solution, the upper phase shift medium plate has an upper connecting block, and the upper connecting block is provided with an upper rotating hole;

[0018] The lower phase shift medium plate is provided with a lower connecting block, and the lower connecting block is provided with a lower rotating hole;

[0019] The phase-shifting circuit board is provided with a coordination hole;

[0020] A support shaft is provided on the inner bottom surface of the lower shell body for sequentially passing through the lower rotation hole, the coordination hole and the upper rotation hole, so that the lower phase shift medium plate and the upper phase shift medium plate can be adjusted and rotated.

[0021] In this technical solution, after the phase shifter is installed, the lower phase shifting dielectric plate, the phase shifting circuit board and the upper phase shifting dielectric plate are sequentially sleeved on the support shaft, that is, the lower rotating hole, the coordinated hole and the upper rotating hole are sequentially sleeved on the support shaft, which facilitates the adjustment of the upper phase shifting dielectric plate and the lower phase shifting dielectric plate by the shifting block.

[0022] On the basis of the above solution and as a preferred solution of the above solution, the lower shell and the cover are both electroplated.

[0023] In this technical solution, the electroplated lower shell and cover have strong conductivity, which improves the antenna performance, while ensuring corrosion resistance for multiple periods of use, improving the use environment of the lower shell and cover, and increasing their service life.

[0024] Based on the above solution and as a preferred solution of the above solution, the first fixing portion is a plurality of lower connecting columns evenly distributed on the outer side of the arc-shaped side wall of the lower shell, and each lower connecting column has a lower connecting hole;

[0025] The second fixing portion is an upper extension block provided on the side surface of the cover body and matched with each of the lower connection columns. Each of the upper extension blocks is provided with an upper connection hole matched with the corresponding lower connection hole.

[0026] In this technical solution, a specific structure of the first fixing part and the second fixing part is provided, and the screw passes through the upper connecting hole and enters the lower connecting hole to fix the cover body on the lower shell body.

[0027] On the basis of the above solution and as a preferred solution of the above solution, a plurality of arc-shaped guide holes are provided on the phase-shifting circuit board to limit the moving path of the synchronizer.

[0028] In this technical solution, the arc-shaped guide hole on the phase-shift circuit board is used to limit the moving path of the synchronizer, so as to facilitate the adjustment of the upper phase-shift dielectric plate and the lower phase-shift dielectric plate.

[0029] On the basis of the above solution and as a preferred solution of the above solution, the synchronizer is two synchronizer bolts for connecting the upper phase shifting dielectric plate and the lower phase shifting dielectric plate.

[0030] In this technical solution, the connecting screws fix the upper phase shifting dielectric plate and the lower phase shifting dielectric plate together, so that during the adjustment process, the upper phase shifting dielectric plate and the lower phase shifting dielectric plate can maintain synchronization, thereby improving the phase shifting accuracy of the adjustment.

[0031] On the basis of the above solution and as a preferred solution of the above solution, the lower shell is provided with a hole for the cable installation.

[0032] In this technical solution, the mounting holes facilitate the installation and fixation of the cables and ensure the overall neatness of the phase shifter.

[0033] On the basis of the above solution and as a preferred solution of the above solution, the cable and the lower shell are fixed by welding, and a wire clamp is provided at the welding point between the cable and the lower shell to prevent the cable from deforming.

[0034] In this technical solution, the cable is directly welded to the lower shell, which can avoid the problem of poor grounding of the phase shifter and improve the safety performance of the actual use of the phase shifter. The wire clamp can prevent the cable from deforming, ensure the stability of the welding point, avoid poor contact of the phase shifting circuit caused by cable deformation, and maintain stable operation of the phase shifter.

[0035] On the basis of the above solution and as a preferred solution of the above solution, the phase-shifting circuit board is provided with six phase-shifting circuits.

[0036] This technical solution discloses a phase-shifting circuit board with six phase-shifting circuits.

[0037] A base station comprises a base station antenna circular arc dielectric phase shifter, wherein the phase shifter is superimposed or horizontally arranged on a mounting platform in the base station.

[0038] In the present technical solution, a base station is provided, in which the phase shifter of the present invention is adopted to improve various performances of the base station in actual use.

[0039] Compared with the prior art, the technical solution proposed by the present invention has the following beneficial effects:

[0040] The operator uses the wave shift block to adjust the relative positions of the upper phase shift dielectric plate and the lower phase shift dielectric plate on the phase shift circuit board to change the dielectric constant; the first bolt moves in the first arc-shaped guide hole, and the second bolt moves in the second arc-shaped guide hole to ensure the accuracy of each adjustment.

[0041] The phase shifter of the present invention has high integration, small size, simple production process, high reliability and convenient maintenance during use. The phase shifter is installed in the base station according to actual conditions to ensure efficient and stable operation of the base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0043] Figure 1 This is a schematic diagram of an exploded view of embodiment 1 of the present invention;

[0044] Figure 2 This is a schematic diagram of an overall three-dimensional view of embodiment 1 of the present invention;

[0045] Figure 3 This is a schematic diagram of a combination of a phase-shifting dielectric plate and a phase-shifting circuit board according to a first embodiment of the present invention;

[0046] Figure 4 This is a schematic diagram of a horizontally placed phase shifter according to a second embodiment of the present invention;

[0047] Figure 5 Schematic diagram of a superimposed phase shifter according to embodiment 2 of the present invention.

[0048] In the figure: 11, lower shell; 110, placement cavity; 111, plane side wall; 112, curved wall; 113, limiting column; 1131, support platform; 114, lower connecting column; 115, connecting rod; 116, support shaft; 117, mounting hole; 1181, first arc block; 1182, second arc block; 119, guide groove; 12, cover; 121, extension block; 2, phase shift circuit board; 21, phase shift circuit; 22, limiting hole; 231, first arc guide hole; 232, second arc guide hole; 31, upper phase shift dielectric plate; 311, upper connecting block; 3111, upper rotating hole; 312, shift block; 3121, fixing hole; 3131, first bolt; 3132, second bolt; 32, lower phase shift dielectric plate; 4, cable. DETAILED DESCRIPTION

[0049] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0050] In order to better illustrate the present invention, the following Figure 1-5 The present invention is described in detail.

[0051] Example 1

[0052] See also Figure 1As shown, a base station antenna arc dielectric phase shifter includes a phase shift housing, a phase shift circuit board 2 and a phase shift dielectric board; the phase shift housing includes a lower housing 11 and a cover 12, the lower housing 11 has a placement cavity 110, the arc-shaped side wall of the lower housing 11 is provided with a guide groove 119, the lower housing 11 is provided with a first fixing portion, and the cover 12 is provided with a second fixing portion that cooperates with the first fixing portion; the phase shift circuit board 2 is arranged in the placement cavity 110, the phase shift circuit board 2 has a phase shift circuit 21, and the phase shift line on the phase shift circuit board The circuit 21 is connected to a cable 4 that passes through the side plane of the lower shell 11; the phase-shifting dielectric plate includes an upper phase-shifting dielectric plate 31 installed on the upper surface of the phase-shifting circuit board 2 and a lower phase-shifting dielectric plate 32 installed on the lower surface of the phase-shifting circuit board 2. The upper phase-shifting dielectric plate 31 and the lower phase-shifting dielectric plate 32 are respectively provided with a shift block 312 extending out of the guide groove 119. A synchronization member is provided between the upper phase-shifting dielectric plate 31 and the lower phase-shifting dielectric plate 32, and the synchronization member is used to synchronize the upper phase-shifting dielectric plate 31 and the lower phase-shifting dielectric plate 32. It is worth mentioning that the lower shell 11 and the cover 12 are both electroplated. The electroplated lower shell 11 and cover 12 have strong corrosion resistance, improve the use environment of the lower shell 11 and the cover 12, and increase their service life.

[0053] In actual use, the upper and lower phase-shifting dielectric plates 31, 32 are positioned above and below the phase-shifting circuit board 2. Synchronous components connect the upper and lower phase-shifting dielectric plates 31, 32, and the phase-shifting circuit board 2. The upper and lower phase-shifting dielectric plates 31, 32, and the phase-shifting circuit board 2 are placed together within the placement cavity 110. The second fixing portion cooperates with the first fixing portion to form the cover 12 and the lower housing 11 into a phase-shifting housing. By oscillating the shifting block 312 that exposes the phase-shifting housing, the dielectric constant can be varied, thereby varying the antenna's electrical downtilt angle. In this embodiment, the phase-shifting circuit board includes six phase-shifting circuits. In other embodiments, the phase-shifting circuit board may include multiple phase-shifting circuits. The technical solution of the present invention does not limit the specific phase-shifting circuits.

[0054] See also Figure 1 As shown in the figure, in a specific example of this embodiment, an arc-shaped block is provided on the inner surface of the lower housing 11 for supporting the phase-shifting circuit board 2. Specifically, in this embodiment, the arc-shaped block includes a first arc-shaped block 1181 and a second arc-shaped block 1182. The first arc-shaped block 1181 and the second arc-shaped block 1182 are respectively provided on either side of the guide groove 119. The first arc-shaped block 1181 and the second arc-shaped block 1182 are both attached to the inner side surface of the arc-shaped wall 112 of the lower housing 11. The phase-shifting circuit board 2 is placed on the first arc-shaped block 1181 and the second arc-shaped block 1182, and the first arc-shaped block 1181 and the second arc-shaped block 1182 support the phase-shifting circuit board 2.

[0055] See also Figure 1As shown, in a specific example of this embodiment, six limiting posts 113 are provided in the lower shell 11, and the limiting posts 113 are evenly distributed on the bottom surface of the lower shell 11, and each limiting post 113 is close to the plane side wall 111, and a support platform 1131 is provided at the same height of each limiting post 113, and a threaded hole is provided on the top of the limiting post 113, and a limiting hole 22 corresponding to each limiting post 113 is provided on the phase shift circuit board 2, and a through hole corresponding to each threaded hole is provided on the cover body 12.

[0056] During actual use, the upper phase-shifting dielectric plate 31 and the lower phase-shifting dielectric plate 32 are first installed on the upper surface or the lower surface of the phase-shifting circuit board 2, and then the phase-shifting circuit board 2 is placed on the first arc block 1181 and the second arc block 1182. Each limiting hole 22 on the phase-shifting circuit board 2 is sleeved on the corresponding limiting column 113. The lower surface of the phase-shifting circuit board 2 is in contact with the support platform 1131. The support platform 1131 is used to support the phase-shifting circuit board 2 while limiting the movement of the phase-shifting circuit board 2. The cover body 12 is fixed to the lower shell 11 through the cooperation of the first fixing part and the second fixing part. The bolts pass through the through holes and enter the threaded holes on the limiting columns 113 to maintain the stability of the phase-shifting circuit board 2.

[0057] See also Figure 1 As shown in the specific example of this embodiment, the upper phase shifter plate 31 has an upper connecting block 311 with an upper rotation hole 3111 defined therein; the lower phase shifter plate 32 has a lower connecting block with a lower rotation hole defined therein; and the phase shifter circuit board 2 has a coordination hole defined therein. A support shaft 116 is provided on the inner bottom surface of the lower housing 11, which sequentially passes through the lower rotation hole, the coordination hole, and the upper rotation hole 3111, enabling the lower phase shifter plate 32 and the upper phase shifter plate 31 to be adjusted and rotated. In actual use, the lower phase shifter plate 32, the phase shifter circuit board 2, and the upper phase shifter plate 31 are sequentially mounted on the support shaft 116, i.e., the lower rotation hole, the coordination hole, and the upper rotation hole 3111 are sequentially mounted on the support shaft 116, facilitating adjustment of the upper phase shifter plate 31 and the lower phase shifter plate 32 via the shift block 312.

[0058] See also Figure 1-2As shown in the specific example of this embodiment, the first fixing part is eight lower connecting columns 114. The eight lower connecting columns 114 are divided into two groups, with four in each group arranged at the connection between the flat side wall 111 and the curved side wall of the lower shell 11, and evenly arranged along the guide groove 119. Each lower connecting column 114 has a lower connecting hole. The second fixing part is an upper extension block 121 arranged on the side of the cover body 12 and matched with each lower connecting column 114. Each upper extension block 121 is provided with an upper connecting hole that matches the corresponding lower connecting hole. During actual use, the screw passes through the upper connecting hole and enters the lower connecting hole to fix the cover body 12 to the lower shell 11. It should be noted that the technical solution of the present invention does not limit the number of lower connecting columns 114 and upper extension blocks 121, nor the specific structure of the first fixing part and the second fixing part. All structures that can be used to achieve a detachable fixed connection between the cover plate and the lower shell 11 are within the scope of protection of the technical solution of the present invention.

[0059] See also Figure 1 and 3 As shown in the specific example of this embodiment, the synchronizing elements are two synchronizing bolts that connect the upper phase-shifting dielectric plate 31 and the lower phase-shifting dielectric plate 32. Two arc-shaped guide holes are provided on the phase-shifting circuit board 2 to define the movement path of the synchronizing bolts. The connecting screws secure the upper and lower phase-shifting dielectric plates 31 and 32 together, ensuring that they maintain synchronization during adjustment, thereby improving the phase shift accuracy of the adjustment. The arc-shaped guide holes include a first arc-shaped guide hole 231 and a second arc-shaped guide hole 232. The synchronization bolts include a first bolt 3131 and a second bolt 3132. The first bolt 3131 passes through the first arc-shaped guide hole 231, and the second bolt 3132 passes through the second arc-shaped guide hole 232. The centers of the first arc-shaped guide hole 231 and the second arc-shaped guide hole 232 are both the centers of the phase-shifting circuit board 2. In actual use, the operator rotates the shift block 312, causing the upper and lower phase-shifting dielectric plates 31 and 32 to rotate. The first bolt 3131 moves within the first arc-shaped guide hole 231, and the second bolt 3132 moves within the second arc-shaped guide hole 232. The first and second arc-shaped guide holes 231 and 232 share the same center as the phase-shifting circuit board 2, making the dielectric constant adjustment more precise. It is worth noting that in other embodiments, the synchronization components are an upper snap plate provided on the upper phase-shifting dielectric plate and a lower snap plate provided on the lower phase-shifting dielectric plate. In another embodiment, an upper phase-shifting dielectric plate is provided with an upper latch, and a lower phase-shifting dielectric plate is provided with a lower latch, which sandwich the phase-shifting circuit board between the upper and lower latches. Furthermore, any structure capable of achieving synchronous rotation of the upper and lower phase-shifting dielectric plates falls within the scope of protection of the technical solution of the present invention or is technically inspired by the technical solution of the present invention.

[0060] See also Figure 1As shown, in a specific example of this embodiment, a mounting hole 117 for the cable 4 to pass through is provided on the lower shell 11. The mounting hole 117 facilitates the installation and fixation of the cable 4 and ensures the overall neatness of the phase shifter. The cable used in this embodiment is a high-imitation cable, and the diameter of the high-imitation cable is smaller than the diameter of the mounting hole, which is convenient for welding. The diameter of the high-imitation cable in this embodiment is 1 mm smaller than the diameter of the mounting hole. The cable 4 in this embodiment is fixed to the lower shell 11 by welding. The cable 4 is directly welded to the lower shell 11, which can avoid the problem of poor grounding of the phase shifter and improve the safety performance of the actual use of the phase shifter. It should be noted that the technical solution of the present invention does not limit the fixing method between the cable 4 and the lower shell 11. It should also be noted that in this embodiment, the cable fixing mounting hole is provided with a wire clamp, which can prevent the cable from deforming, ensure the stability of the welding point, avoid poor contact of the phase shifting circuit caused by cable deformation, and maintain stable operation of the phase shifter.

[0061] See also Figure 3 As shown, in this embodiment, the shift blocks 312 of the upper phase shift dielectric plate 31 and the lower phase shift dielectric plate 32 are each provided with a fixing hole 3121 for connecting to an external driving device; during actual use, the external driving device drives the shift block 312 to rotate to adjust the upper phase shift dielectric plate 31 and the lower phase shift dielectric plate 32 to achieve a change in the dielectric constant and a change in the electrical downtilt angle of the antenna. The specific adjustment process is as follows: the external driving device drives the shift block 312 to move, the upper phase shift medium plate 31 is affected by the movement of the shift block 312, the upper connecting block 311 rotates around the support shaft, and then the upper phase shift medium plate 31 rotates around the support shaft, the lower phase shift medium plate 32 is affected by the movement of the shift block 312, the lower connecting block rotates around the support shaft, and then the lower phase shift medium plate 32 rotates around the support shaft, the first bolt 3131 passes through the first arc-shaped guide hole 231, and the second bolt 3132 passes through the second arc-shaped guide hole 232. The cooperation of the first bolt 3131 and the second bolt 3132 can be used to ensure that the upper phase shift medium plate and the lower phase shift medium plate keep rotating synchronously, changing the upper phase shift medium plate 31 and the lower phase shift medium plate 32. The phase-shifting dielectric plate and the lower phase-shifting dielectric plate cover the position of the phase-shifting circuit on the phase-shifting circuit board, adjusting the dielectric constant of the phase-shifting circuit to achieve phase adjustment. The shift block 312 is driven to move by an external drive device, thereby adjusting the position of the upper phase-shifting dielectric plate 31 and the lower phase-shifting dielectric plate 32 relative to the phase-shifting circuit board 2. In this embodiment, the phase-shifting circuit board has a semicircular structure, and the upper phase-shifting dielectric plate and the lower phase-shifting dielectric plate have a fan-shaped structure. The upper phase-shifting dielectric plate and the lower phase-shifting dielectric plate are rotated to change the position of the phase-shifting circuit on the phase-shifting circuit board, thereby changing the dielectric constant. By rotating the upper phase-shifting dielectric plate and the lower phase-shifting dielectric plate to change the dielectric constant, the phase of the phase shifter is adjusted while reducing the size of the phase shifter.

[0062] See also Figure 3As shown, the phase shift circuit board, the upper phase shift dielectric plate and the lower phase shift dielectric plate constitute the phase shift dielectric plate, see Figure 1-2 As shown, two adjustable phase-shifting dielectric plates are placed one above the other in the placement cavity. The phase-shifting circuit on each phase-shifting circuit board is connected to a cable passing through the lower shell. The adjustable phase-shifting dielectric plates designed in the upper and lower layers enable the phase shifter in this technical solution to support the use of a dual-stage antenna.

[0063] Example 2

[0064] See also Figure 4 As shown, a base station includes a base station antenna arc dielectric phase shifter, wherein the phase shifter is horizontally arranged on a mounting platform in the base station.

[0065] See also Figure 5 As shown, a base station includes a base station antenna circular-arc dielectric phase shifter, wherein the phase shifters are stacked on a mounting platform within the base station. It should be noted that four connecting rods 115 are provided on the side of the lower housing 11. During stacking, the connecting rods 115 on the phase shifters are aligned one-to-one and then secured with bolts to form a stacked phase shifter.

[0066] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and that one or more of the above embodiments may be combined. Those skilled in the art may make various changes, modifications, or combinations within the scope of the claims, which do not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments may be combined with each other in any manner.

Claims

1. A base station antenna circular arc dielectric phase shifter, characterized in that: It includes a phase shift housing, a phase shift circuit board and a phase shift medium board; The phase shift housing includes a lower housing and a cover. The lower housing has a placement cavity. A guide groove is provided on the arc-shaped side wall of the lower housing. The lower housing is provided with a first fixing portion. The cover is provided with a second fixing portion that cooperates with the first fixing portion. The phase-shifting circuit board is disposed in the placement cavity, and has a phase-shifting circuit on the phase-shifting circuit board. The phase-shifting circuit has a port connected to the outside, one end of a cable is fixedly connected to the port, and the other end of the cable passes through the side plane of the lower housing; The inner bottom surface of the lower shell is provided with a plurality of limiting columns for limiting the movement of the phase-shifting circuit board, the limiting columns are provided with a support platform, and the limiting columns are provided with threaded holes; The phase shift circuit board is provided with a limiting hole corresponding to each of the limiting pillars; The phase-shifting dielectric plate includes an upper phase-shifting dielectric plate mounted on the upper surface of the phase-shifting circuit board and a lower phase-shifting dielectric plate mounted on the lower surface of the phase-shifting circuit board. The upper phase-shifting dielectric plate and the lower phase-shifting dielectric plate are each provided with a shifting block extending out of the guide slot. A synchronizing member is provided between the upper phase-shifting dielectric plate and the lower phase-shifting dielectric plate, and the synchronizing member is used to synchronize the upper phase-shifting dielectric plate with the lower phase-shifting dielectric plate. The phase-shifting circuit board is provided with a plurality of arc-shaped guide holes for defining the moving path of the synchronizer; The synchronization member is two synchronization bolts for connecting the upper phase shifting medium plate and the lower phase shifting medium plate; The phase-shifting circuit board is provided with a plurality of arc-shaped guide holes for limiting the moving path of the synchronizer.

2. The base station antenna circular arc dielectric phase shifter according to claim 1, characterized in that: An arc-shaped block is provided on the inner surface of the lower shell for supporting the phase-shifting circuit board.

3. The base station antenna circular arc dielectric phase shifter according to claim 1, characterized in that: The upper phase shift medium plate is provided with an upper connecting block, and the upper connecting block is provided with an upper rotating hole; The lower phase shift medium plate is provided with a lower connecting block, and the lower connecting block is provided with a lower rotating hole; The phase-shifting circuit board is provided with a coordination hole; A support shaft is provided on the inner bottom surface of the lower shell body for sequentially passing through the lower rotation hole, the coordination hole and the upper rotation hole, so that the lower phase shift medium plate and the upper phase shift medium plate can be adjusted and rotated.

4. The circular arc dielectric phase shifter for a base station antenna according to claim 1, characterized in that: The lower shell and the cover are both electroplated.

5. The circular arc dielectric phase shifter for a base station antenna according to claim 1, characterized in that: The first fixing portion is a plurality of lower connecting columns uniformly distributed on the outer side of the arc-shaped side wall of the lower shell, and each lower connecting column has a lower connecting hole; The second fixing portion is an upper extension block provided on the side surface of the cover body and matched with each of the lower connection columns. Each of the upper extension blocks is provided with an upper connection hole matched with the corresponding lower connection hole.

6. The circular arc dielectric phase shifter for a base station antenna according to claim 1, characterized in that: The lower shell is provided with a mounting hole for the cable to pass through.

7. The circular arc dielectric phase shifter for a base station antenna according to claim 1, characterized in that: The cable and the lower shell are fixed by welding, and a wire clamp is provided at the welding point between the cable and the lower shell to prevent the cable from being deformed.

8. A base station antenna circular arc dielectric phase shifter according to claim 1, characterized in that: The phase-shift circuit board has six phase-shift circuits.

9. A base station, characterized in that: It comprises a base station antenna arc dielectric phase shifter as described in any one of claims 1-8, wherein the phase shifter is superimposed or horizontally arranged on a mounting platform in the base station.

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