Phase shifter and base station antenna

Abstract

The application relates to the technical field of communication devices, and provides a phase shifter and a base station antenna. The phase shifter comprises a substrate, a rotating piece and a driving assembly. The rotating piece is arranged to rotate on the substrate. The side of the rotating piece facing the substrate is provided with a coupling line. The side of the substrate facing the coupling line is provided with an input line and an output line. The coupling line is coupled and connected with the input line and the output line. The driving assembly is in transmission connection with the rotating piece. Under the driving of the driving assembly, the rotating piece rotates relative to the substrate, and the length of the transmission line of the phase shifter changes correspondingly. Under the condition that the driving assembly drives the rotating piece to rotate relative to the substrate, the length of the transmission line of the phase shifter can change correspondingly, so that the purpose of phase adjustment is achieved. In addition, the substrate and the rotating piece are arranged in a stacked mode, the structure is simple, the occupied space is small, and the antenna can be designed to be small in size and light in weight.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication devices, in particular to a phase shifter and a base station antenna. BACKGROUND

[0002] The electrically adjustable antenna is widely used in mobile communication systems and is an important component of the base station. With the development of the communication industry, the number of base stations is increasing, and the interference between base stations is becoming more and more serious. The network optimization environment is becoming more and more complex. Therefore, it is necessary to improve the performance of the electrically adjustable antenna and reduce the size of the antenna.

[0003] The phase shifter is the core element of the electrically adjustable antenna. Through the phase shifter, the phase delay of the signal fed to each radiation unit of the base station antenna is dynamically and continuously changed, so as to continuously adjust the beam pointing of the antenna vertical plane pattern. Therefore, the performance of the phase shifter plays a decisive role in the performance of the base station antenna.

[0004] The structure of the phase shifter has a great influence on the internal layout, cost and producibility of the base station antenna. The problem of the traditional phase shifter design method is that the size of the entire phase shifter is too large, which occupies a large space inside the antenna and is not conducive to the miniaturization of the antenna. SUMMARY

[0005] The present application provides a phase shifter and a base station antenna to solve the problem of the prior art that the large size of the phase shifter is not conducive to the miniaturization of the antenna.

[0006] In a first aspect, the present application provides a phase shifter, comprising: a substrate, a rotating member, and a driving assembly;

[0007] The rotating member is rotatably arranged on the substrate, and the rotating member is provided with a coupling line on the side facing the substrate. The substrate is provided with an input line and an output line on the side facing the coupling line, and the coupling line is coupled and connected with the input line and the output line. The driving assembly is in transmission connection with the rotating member.

[0008] Under the driving of the driving assembly, the rotating member rotates relative to the substrate, and the length of the transmission line of the phase shifter changes accordingly.

[0009] According to the phase shifter provided by the present application, the rotating member comprises a pressing plate and a printed circuit board.

[0010] The pressing plate is rotatably arranged on the substrate, and the printed circuit board is arranged on the side of the pressing plate facing the substrate. The printed circuit board is provided with the coupling line on the side facing the substrate. The pressing plate and the printed circuit board rotate synchronously relative to the substrate.

[0011] The phase shifter provided by the application, one of the pressing plate and the printed circuit board is provided with a groove, and the other is provided with a connecting column, and the pressing plate and the printed circuit board are connected through the groove and the connecting column.

[0012] The phase shifter provided by the application, the projection area of the pressing plate on the substrate is less than the area of the substrate.

[0013] The edge of the pressing plate is provided with a plurality of buckling parts, and the plurality of buckling parts are sequentially arranged along the circumferential direction of the pressing plate; the substrate is provided with a plurality of first sliding grooves, and each buckling part is buckled in the corresponding first sliding groove.

[0014] The phase shifter provided by the application, the projection area of the pressing plate on the substrate is less than the area of the substrate.

[0015] The rotating member further comprises a bottom plate, the bottom plate is arranged on the side of the substrate away from the pressing plate, the edge of the pressing plate is provided with a plurality of buckling parts, and the plurality of buckling parts are sequentially arranged along the circumferential direction of the pressing plate; the substrate is provided with a plurality of first sliding grooves, and the bottom plate is provided with a plurality of second sliding grooves, each buckling part passes through the corresponding first sliding groove and the corresponding second sliding groove to be buckled.

[0016] The phase shifter provided by the application, the rotating member further comprises a rotating shaft, the rotating shaft is arranged at the center position of the bottom plate and sequentially penetrates the substrate, the printed circuit board and the pressing plate, and the pressing plate can rotate relative to the rotating shaft.

[0017] The phase shifter provided by the application, in the case that the first sliding groove is two, the two first sliding grooves correspond to the input line and the output line respectively.

[0018] The input line and the output line each comprise a first part, a switching part and a second part, the first part, the switching part and the second part are enclosed to form a mounting space, each first sliding groove is arranged in the corresponding mounting space, the first sliding groove is matched with the corresponding first part, the coupling line is coupled with the first part of the input line, and the coupling line is coupled with the first part of the output line.

[0019] The phase shifter provided by the application, the driving assembly comprises a gear and a driving source.

[0020] The gear is arranged on the side of the rotating member away from the substrate, and the driving source is in transmission connection with the gear.

[0021] According to the phase shifter provided by the application, the driving assembly further comprises a rack, the rack is in meshing connection with the gear, and the driving source is in driving connection with the rack.

[0022] In the second aspect, the application provides a base station antenna comprising the phase shifter according to any one of the above.

[0023] The phase shifter and the base station antenna provided by the application can change the length of the transmission line of the phase shifter when the driving assembly drives the rotating member to rotate relative to the base plate, so as to achieve the purpose of phase adjustment; in addition, the base plate and the rotating member are stacked, the structure is simple, the occupied space is small, and the antenna is conducive to miniaturization and lightweight design. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0025] Figure 1 is an exploded schematic view of the phase shifter provided by the application;

[0026] Figure 2 is one of the structural schematic views of the phase shifter provided by the application;

[0027] Figure 3 is an assembly schematic view of the printed circuit board and the coupling line provided by the application;

[0028] Figure 4 is a structural schematic view of the base plate and the coupling line provided by the application;

[0029] Figure 5 is a structural schematic view of the base plate provided by the application;

[0030] Figure 6 is the second structural schematic view of the phase shifter provided by the application.

[0031] Reference signs:

[0032] 1, base plate; 11, input line; 111, input port; 12, output line; 121, output port; 13, first sliding groove; 14, mounting space;

[0033] 2, rotating member; 21, coupling line; 22, pressing plate; 221, positioning groove; 222, buckling part; 23, printed circuit board; 24, bottom plate; 241, second sliding groove;

[0034] 3. Drive assembly; 31. Gear; 32. Rack. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are only a part of embodiments of the present application, but not all embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0036] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For a person of ordinary skill in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0038] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0039] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0040] At present, the phase shifter generally moves the phase of the signal in two ways, one is to change the equivalent dielectric constant of the transmission line, and the other is to change the length of the transmission line. The present application adopts the second way, that is, changing the length of the transmission line in the phase shifter to achieve the purpose of moving the phase of the signal.

[0041] As shown in Figure 1 and Figure 2 The phase shifter of the embodiment of the present application comprises a substrate 1, a rotating member 2 and a driving assembly 3.

[0042] The rotating member 2 is arranged on the substrate 1, and the rotating member 2 is provided with a coupling line 21 on the side facing the substrate 1. The substrate 1 is provided with an input line 11 and an output line 12 on the side facing the coupling line 21. The coupling line 21 is coupled and connected with the input line 11 and the output line 12. The driving assembly 3 is in transmission connection with the rotating member 2.

[0043] Under the driving of the driving assembly 3, the rotating member 2 rotates relative to the substrate 1, and the length of the transmission line of the phase shifter changes accordingly.

[0044] That is, under the condition that the rotating member 2 rotates relative to the substrate 1, the coupling line 21 can rotate relative to the input line 11 and the output line 12, in other words, the first coupling point of the coupling line 21 on the input line 11 changes the position on the input line 11, and the second coupling point of the coupling line 21 on the output line 12 changes the position on the output line 12. It should be noted that the first coupling point refers to the point where the coupling line 21 contacts the input line 11, and the second coupling point refers to the point where the coupling line 21 contacts the output line 12.

[0045] Exemplarily, under the condition that the rotating member 2 rotates clockwise relative to the substrate 1, the length of the transmission line of the phase shifter increases, and under the condition that the rotating member 2 rotates counterclockwise relative to the substrate 1, the length of the transmission line of the phase shifter decreases.

[0046] Specifically, the substrate 1 can be a circular substrate, the input lines 11 and the output lines 12 are arranged opposite to each other on the substrate 1, at least part of the input lines 11 and at least the output lines 12 are arranged in a circle, in other words, the shapes of the input lines 11 and the output lines 12 arranged in a circle can be circular arcs, at this time, the coupling lines 21 can be coupled with the input lines 11 and the output lines 12 arranged in a circle when the coupling lines 21 rotate clockwise or counterclockwise relative to the substrate 1.

[0047] As shown in the examples of FIGS. 1 and 2, the transmission line of the phase shifter includes an input line 11, an output line 12, and a coupling line 21. Figure 4 As shown in the examples of FIGS. 1 and 2, the transmission line of the phase shifter includes an input line 11, an output line 12, and a coupling line 21.

[0048] As can be understood, when the coupling line 21 rotates clockwise, E moves toward D1, F moves toward D2, and the length of the transmission line gradually increases, and when E coincides with D1 and F coincides with D2, the length of the transmission line reaches a maximum value; when the coupling line 21 rotates counterclockwise, E moves toward C1, F moves toward C2, and the length of the transmission line gradually decreases, and when E coincides with C1 and F coincides with C2, the length of the transmission line reaches a minimum value.

[0049] In the embodiment of the present application, when the driving assembly 3 drives the rotating member 2 to rotate relative to the substrate 1, the length of the transmission line of the phase shifter can be changed accordingly, so as to achieve the purpose of phase adjustment; in addition, the substrate 1 and the rotating member 2 are stacked, the structure is simple, the occupied space is small, and it is conducive to the miniaturization and lightweight design of the antenna.

[0050] In the optional embodiment, as shown in FIGS. 3 and 4, the rotating member 2 includes a pressing plate 22 and a printed circuit board 23. Figure 1 Figure 3 In the optional embodiment, as shown in FIGS. 3 and 4, the rotating member 2 includes a pressing plate 22 and a printed circuit board 23.

[0051] The pressing plate 22 is arranged to rotate relative to the substrate 1, the printed circuit board 23 is arranged on the side of the pressing plate 22 facing the substrate 1, the side of the printed circuit board 23 facing the substrate 1 is provided with the coupling line 21, and the pressing plate 22 and the printed circuit board 23 rotate synchronously relative to the substrate 1.

[0052] Specifically, the pressing plate 22, the printed circuit board 23, and the coupling line 21 are stacked, and the stacking order from top to bottom is the pressing plate 22, the printed circuit board 23, and the coupling line 21 in sequence. The pressing plate 22 and the printed circuit board 23 are fixedly connected, and when the phase shifter works, the pressing plate 22, the printed circuit board 23, and the coupling line 21 rotate counterclockwise or clockwise relative to the substrate 1 as a whole.

[0053] ​In order to protect the printed circuit board 23 and the coupling line 21, avoid the electric conduction of the pressing plate 22 to cause the circuit failure, the pressing plate 22 can be made of insulating material. The pressing plate 22 can be matched with the shape of the base plate 1, the length of the printed circuit board 23 should not be longer than the length of the pressing plate 22, and the shape and size of the printed circuit board 23 should be matched with the coupling line 21, so as to improve the sensitivity and rotation accuracy of rotation.

[0054] In optional embodiments, as shown in Figure 1 One of the pressing plate 22 and the printed circuit board 23 is provided with a recess, and the other is provided with a connecting column, and the pressing plate 22 and the printed circuit board 23 are connected through the recess and the connecting column.

[0055] It should be noted that the recess and the connecting column can be multiple, and the multiple recesses and the connecting columns are connected one by one, wherein the shape and size of the recess and the connecting column should be matched with each other.

[0056] Exemplarily, the side of the pressing plate 22 close to the printed circuit board 23 is symmetrically provided with four cylindrical recesses, and the side of the printed circuit board 23 close to the pressing plate 22 should also be provided with corresponding four cylindrical connecting columns, and the recess and the connecting column are connected one by one, so that the pressing plate 22 and the printed circuit board 23 are connected together. In addition, the printed circuit board 23 can also be provided with a recess, and the pressing plate 22 can be provided with a connecting column, and the setting mode is the same as the above, which will not be repeated here.

[0057] In the embodiments of the present application, the recess and the connecting column are connected, which is simple to install and convenient to disassemble. When the pressing plate 22 or the printed circuit board 23 is damaged, only one of them needs to be replaced, which saves the cost.

[0058] In addition, the connection mode of the pressing plate 22 and the printed circuit board 23 is not limited to the recess and the connecting column. The printed circuit board 23 can also be pasted on the pressing plate 22, and this connection mode is more firm and stable.

[0059] In optional embodiments, as shown in Figure 2 and Figure 5 The projection area of the pressing plate 22 on the base plate 1 is smaller than the area of the base plate 1. The edge of the pressing plate 22 is provided with a plurality of buckling portions 222, and the plurality of buckling portions 222 are sequentially arranged along the circumferential direction of the pressing plate 22. The base plate 1 is provided with a plurality of first sliding grooves 13, and each buckling portion 222 is buckled in the corresponding first sliding groove 13.

[0060] Among them, the first sliding groove 13 is arranged on the inner side of the base plate 1, and the projection area of the pressing plate 22 on the base plate 1 should be smaller than the area of the base plate 1, otherwise the buckling portion 222 on the pressing plate 22 cannot slide in the first sliding groove 13.

[0061] Specifically, the rotation of the pressing plate 22 relative to the base plate 1 is realized by the sliding of the buckling portions 222 along the first sliding grooves 13. When the pressing plate 22 rotates clockwise or counterclockwise, the buckling portions 222 actually slide clockwise or counterclockwise along the tracks of the first sliding grooves 13.

[0062] Exemplarily, two first sliding grooves 13 are arranged on the base plate 1, and two buckling portions 222 are arranged on the pressing plate 22 correspondingly.

[0063] In the embodiment of the present application, the material required by the base plate 1 is reduced, and the loss is lowered by arranging multiple first sliding grooves 13 on the base plate 1.

[0064] In an optional embodiment, as shown in Figure 1 and Figure 2 The projection area of the pressing plate 22 on the base plate 1 is smaller than the area of the base plate 1. The rotating member 2 further comprises a bottom plate 24 arranged on the side of the base plate 1 away from the pressing plate 22. The edge of the pressing plate 22 is provided with multiple buckling portions 222 arranged in sequence along the circumferential direction of the pressing plate 22. The base plate 1 is provided with multiple first sliding grooves 13, and the bottom plate 24 is provided with multiple second sliding grooves 241. Each buckling portion 222 is buckled through the corresponding first sliding groove 13 and the corresponding second sliding groove 241.

[0065] Specifically, the side of the base plate 1 away from the pressing plate 22 is connected with the bottom plate 24, which can be connected by pasting. The shape and size of the bottom plate 24 can be consistent with those of the base plate 1, or the size of the bottom plate 24 can be slightly larger than that of the base plate 1. In this way, the bottom plate 24 can play a supporting role for the base plate 1.

[0066] Furthermore, the positions, shapes and sizes of the second sliding grooves 241 and the first sliding grooves 13 should be matched, and the second sliding grooves 241 and the first sliding grooves 13 are arranged in superposition.

[0067] It can be understood that, when the phase shifter is working, the buckling portions 222 of the pressing plate 22 slide along the tracks of the first sliding grooves 13 and the second sliding grooves 241.

[0068] Exemplarily, in the case of two first sliding grooves 13 and two buckling portions 222, the bottom plate 24 is provided with two second sliding grooves 241 correspondingly.

[0069] In an optional embodiment, in order to ensure that the printed circuit board 23 and the pressing plate 22 can rotate synchronously and smoothly relative to the base plate 1, the rotating member 2 further comprises a rotating shaft arranged at the central position of the bottom plate 24 and sequentially penetrating the base plate 1, the printed circuit board 23 and the pressing plate 22. The pressing plate 22 can rotate relative to the rotating shaft.

[0070] Specifically, the rotating shaft penetrates the substrate 1, the printed circuit board 23 and the pressing plate 22. When the phase shifter works, the pressing plate 22 rotates relative to the rotating shaft. The center hole of the pressing plate 22 and the printed circuit board 23 needs to be larger than the size of the rotating shaft to provide a rotating space for the rotating shaft.

[0071] In addition, the rotating shaft can also be fixed with the pressing plate 22. The rotating of the rotating shaft drives the pressing plate 22 to rotate relative to the substrate 1, which can also achieve the purpose of changing the length of the transmission line of the phase shifter.

[0072] It should be particularly pointed out that in the case of setting the rotating shaft, the recess and the buckle part 222 can be selected not to be set. Similarly, in the case of setting the recess and the buckle part 222, the rotating shaft can also be selected not to be set. That is, the rotating shaft and the recess and the buckle part 222 can be selected to be set or both, so that the rotating process is more stable. The specific setting mode can be adjusted according to the actual situation.

[0073] In an optional embodiment, as shown in Figure 1 , Figure 4 and Figure 5 , the first sliding groove 13 can be multiple, and the multiple first sliding grooves 13 are circumferentially arranged. Exemplarily, when the first sliding groove 13 is two, the two first sliding grooves 13 correspond to the input line 11 and the output line 12 respectively.

[0074] Specifically, the two first sliding grooves 13 are symmetrically arranged with the center of the substrate 1, and the shape and size of the two first sliding grooves 13 should be completely consistent. Correspondingly, the bottom plate 24 should also be provided with two second sliding grooves 241, and the position, shape and size of the second sliding groove 241 are consistent with those of the first sliding groove 13.

[0075] Further, the input line 11 and the output line 12 each include a first part, a switching part and a second part, and the first part, the switching part and the second part enclose the mounting space 14. Each first sliding groove 13 is arranged in the corresponding mounting space 14, and the first sliding groove 13 is adapted to the corresponding first part. The coupling line 21 is coupled to the first part of the input line 11, and the coupling line 21 is coupled to the first part of the output line 12.

[0076] It should be noted that the first part of the input line 11 refers to the part of C1 to D1, and the first part of the output line 12 refers to the part of C2 to D2. The switching part of the input line 11 refers to the part of B1 to C1, and the switching part of the output line 12 refers to the part of B2 to C2. The second part of the input line 11 refers to the part of A1 to B1, and the second part of the output line 12 refers to the part of A2 to B2.

[0077] In the embodiment of the present application, when the phase shifter is in operation, the driving assembly 3 drives the rotating member 2 to rotate relative to the substrate 1, and the coupling line 21 rotates clockwise or counterclockwise along the first portions of the input line 11 and the output line 12, so as to change the length of the transmission line of the phase shifter, thereby achieving the purpose of adjusting the phase of the signal.

[0078] In the optional embodiment, as shown in Figure 1 The driving assembly 3 comprises a gear 31 and a driving source, the gear 31 is arranged on the side of the rotating member away from the substrate 1, and the driving source is in transmission connection with the gear 31.

[0079] Specifically, the gear 31 is arranged on the side of the pressing plate 22 away from the printed circuit board 23, wherein one of the gear 31 or the pressing plate 22 can be provided with a positioning column, and the other can be provided with a positioning groove 221. For example, a plurality of positioning grooves 221 can be arranged on the side of the pressing plate 22 away from the printed circuit board 23, and a plurality of positioning columns can be correspondingly arranged on the side of the gear 31 close to the pressing plate 22, and the gear 31 and the pressing plate 22 are buckled together by the positioning columns and the positioning grooves 221. Alternatively, the gear 31 and the pressing plate 22 can be connected by being pasted together.

[0080] It can be understood that the gear 31 is driven by the driving source, and at the same time of the self-rotation of the gear 31, the pressing plate 22 also rotates, so as to realize the rotation of the rotating member 2 relative to the substrate 1 driven by the gear 31. In the case of arranging the rotating shaft, the gear 31 can be selected not to be arranged, and the rotating shaft is connected with the driving source to drive the rotating member 2 to rotate, which also achieves the purpose of the rotation of the rotating member relative to the substrate 1. The driving source can be a motor or other power generating device.

[0081] In the optional embodiment, as shown in Figure 1 and Figure 6 The driving assembly 3 further comprises a rack 32, the rack 32 is in meshing connection with the gear 31, and the driving source is in transmission connection with the rack 32.

[0082] Specifically, the rack 32 is arranged on the side of the gear 31, and the driving source drives the rack 32 to move horizontally, thereby driving the gear 31 to rotate, and then driving the rotating member 2 to rotate relative to the substrate 1.

[0083] It should be noted that the rack 32 can be two, arranged on the left and right sides or the upper and lower sides of the gear 31, or one rack 32 can be arranged on one side of the gear 31. When two racks 32 are arranged, the movement directions of the two racks 32 should be opposite, so as to realize the self-rotation of the gear 31 in place.

[0084] The rack 32 can not only control the rotation angle of the gear 31, but also can be engaged with multiple phase shifters when multiple phase shifters need to work simultaneously, so that the transmission of multiple phase shifters can be controlled simultaneously, the phase adjustment of the rotating member 2 is driven by the rack 32, and the phase shift precision of the synchronous control and the consistency of the phase adjustment are improved.

[0085] In addition, the embodiment of the present application further provides a base station antenna comprising the phase shifter as described above.

[0086] Specifically, since the base station antenna comprises the phase shifter as described above, and the specific structure of the phase shifter is referred to the above embodiment, the base station antenna shown in the embodiment comprises all the technical solutions of the above embodiments, and thus has at least all the beneficial effects obtained by the above technical solutions, which will not be described one by one.

[0087] The base station antenna provided by the embodiment of the present application can synchronously control multiple phase shifters, improve the phase shift precision, and solve the problems of large antenna size, high cost, product consistency and the like.

[0088] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A phase shifter, characterized by, The application relates to a phase shifter. The phase shifter comprises a substrate, a rotating member and a driving assembly. The rotating member is arranged on the substrate, and a coupling line is arranged on the side of the rotating member facing the substrate; an input line and an output line are arranged on the side of the substrate facing the coupling line, and the coupling line is coupled with the input line and the output line; the driving assembly is in transmission connection with the rotating member. Under the driving of the driving assembly, the rotating member rotates relative to the substrate, and the length of the transmission line of the phase shifter changes correspondingly. The rotating member comprises a pressing plate, and the pressing plate is arranged on the substrate in a rotating mode; the projection area of the pressing plate on the substrate is smaller than the area of the substrate. The edge of the pressing plate is provided with a plurality of buckling portions, and the buckling portions are sequentially arranged along the circumferential direction of the pressing plate; the substrate is provided with a plurality of first sliding grooves, and each buckling portion is buckled in the corresponding first sliding groove. When the first sliding grooves are two, the two first sliding grooves correspond to the input line and the output line respectively. The input line and the output line each comprise a first part, a switching part and a second part, the first part, the switching part and the second part form an installation space, each first sliding groove is arranged in the corresponding installation space, the first sliding groove is matched with the first part, the coupling line is coupled with the first part of the input line, and the coupling line is coupled with the first part of the output line.

2. The phase shifter of claim 1, wherein The rotating member further comprises a printed circuit board. The printed circuit board is arranged on the side of the pressing plate facing the substrate, and the coupling line is arranged on the side of the printed circuit board facing the substrate; the pressing plate and the printed circuit board rotate synchronously relative to the substrate.

3. The phase shifter of claim 2, wherein One of the pressing plate and the printed circuit board is provided with a groove, and the other is provided with a connecting column; the pressing plate and the printed circuit board are connected through the groove and the connecting column.

4. The phase shifter of claim 2, wherein The projection area of the pressing plate on the substrate is smaller than the area of the substrate. The rotating member further comprises a bottom plate, the bottom plate is arranged on the side of the substrate away from the pressing plate, the edge of the pressing plate is provided with a plurality of buckling portions, and the buckling portions are sequentially arranged along the circumferential direction of the pressing plate; the substrate is provided with a plurality of first sliding grooves, and the bottom plate is provided with a plurality of second sliding grooves; each buckling portion is buckled through the corresponding first sliding groove and the corresponding second sliding groove.

5. The phase shifter of claim 4, wherein, The rotating member further comprises a rotating shaft, the rotating shaft is arranged at the center position of the bottom plate and sequentially penetrates the substrate, the printed circuit board and the pressing plate; the pressing plate can rotate relative to the rotating shaft.

6. The phase shifter of claim 1, wherein The driving assembly comprises a gear and a driving source. The gear is arranged on the side of the rotating member away from the substrate, and the driving source is in transmission connection with the gear.

7. The phase shifter of claim 6, wherein, The driving assembly further comprises a rack, the rack is in meshing connection with the gear, and the driving source is in transmission connection with the rack.

8. A base station antenna, comprising: The phase shifter comprises any one of claims 1 to 7.

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