Base station antenna device, base station

Abstract

The application relates to a base station antenna device and a base station, the base station antenna device comprising a reflecting plate, a cavity structure, a radiation unit and a connecting assembly; the radiation unit comprises a radiation arm, a balun and a feed, one end of the balun is connected with the radiation arm, and the feed is arranged in the balun; the cavity structure and the radiation arm are respectively located on two sides of the reflecting plate along a first direction; a phase-shifting network is arranged in the cavity structure, and one end of the feed, which is away from the radiation arm, is connected with the phase-shifting network; the connecting assembly comprises a connecting part and a fastening part, the connecting part is fixed to an outer wall of the balun and located on a side of the reflecting plate, which is away from the cavity structure; and the fastening part is sequentially arranged in the connecting part, the reflecting plate and a cavity wall of the cavity structure, so as to fixedly connect the connecting part, the reflecting plate and the cavity wall. The radiation unit and the cavity structure can be fixed with the reflecting plate at the same time through one operation, and the assembly process and the number of fastening parts are saved.

Description

TECHNICAL FIELD

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

[0002] The base station antenna device generally comprises a reflector plate, a phase shifter, a radiating unit and the like. In the related art, the radiating unit and the phase shifter are respectively mounted on two sides of the reflector plate. When assembling the base station antenna device, the radiating unit is generally first fixed on one side of the reflector plate through a fastening part such as a bolt, and then the phase shifter is fixed on the other side of the reflector plate through a fastening part such as a bolt.

[0003] Since the radiating unit and the phase shifter need to be respectively fixed to the reflector plate through fastening parts such as bolts, the assembly process is relatively more when assembling the base station antenna device, and a relatively large number of fastening parts need to be used. SUMMARY

[0004] Therefore, it is necessary to provide a base station antenna device and a base station to solve the problems of a relatively large number of assembly processes and a relatively large number of fastening parts needed to be used in the related art.

[0005] A base station antenna device comprises a reflector plate, a cavity structure, a radiating unit and a connecting assembly.

[0006] The radiating unit comprises a radiating arm, a balun and a feed, one end of the balun is connected with the radiating arm, and the feed is arranged in the balun.

[0007] The cavity structure and the radiating arm are respectively located on two sides of the reflector plate along a first direction, the first direction being a thickness direction of the reflector plate; a phase shift network is arranged in the cavity structure, and one end of the feed away from the radiating arm is connected with the phase shift network.

[0008] The connecting assembly comprises a connecting part and a fastening part, the connecting part is fixed to an outer wall of the balun and located on a side of the reflector plate away from the cavity structure; the fastening part is sequentially arranged in the connecting part, the reflector plate and a cavity wall of the cavity structure, so as to fixedly connect the connecting part, the reflector plate and the cavity wall.

[0009] In an embodiment, a threaded hole is arranged on the cavity wall of one end of the cavity structure close to the reflector plate.

[0010] The fastening part comprises a rod part and a head part connected with the rod part; one end of the rod part away from the head part is sequentially arranged in the connecting part, the reflector plate and threadedly matched with the threaded hole, so that the head part abuts against a side of the connecting part away from the reflector plate.

[0011] In an embodiment, the connecting part and the balun are integrally formed.

[0012] In an embodiment, the radiation unit comprises two pairs of the radiation arms with orthogonal polarization, two baluns and two feeders, the two feeders corresponding to the two baluns one by one;

[0013] The cavity structure comprises two groups of phase-shifting cavity groups arranged along a second direction, the second direction being perpendicular to the first direction, and each of the two groups of phase-shifting cavity groups being provided with a phase-shifting network; the two feeders correspond to the two groups of phase-shifting cavity groups one by one, and an end of the feeder away from the radiation arm is connected to the phase-shifting network in the corresponding phase-shifting cavity group.

[0014] In an embodiment, a first virtual axis along the first direction is defined, and a second virtual axis along a third direction is defined, the first virtual axis and the second virtual axis intersecting to divide four quadrants, and the four radiation arms correspond to the four quadrants one by one; wherein the third direction is perpendicular to the first direction and perpendicular to the second direction.

[0015] Two adjacent radiation arms along the third direction are respectively provided with avoidance grooves opposite to each other on a side close to each other, and the two avoidance grooves opposite to each other enclose an avoidance hole; the avoidance hole is provided one by one corresponding to the fastening part; the fastening part is located in the projection range of the corresponding avoidance hole on the reflector plate.

[0016] In an embodiment, the number of the connecting assemblies is two groups, the two groups of connecting assemblies are arranged along the second direction, and the connecting assemblies are connected one by one corresponding to the baluns; the two baluns are arranged along the second direction, and the two groups of connecting assemblies are respectively located on a side away from each other of the two baluns along the second direction.

[0017] In an embodiment, the radiation arm is provided with a hollow region penetrating along the first direction; the fastening part is located in the projection range of the corresponding hollow region on the reflector plate.

[0018] In an embodiment, the number of the connecting assemblies is two groups, and the connecting assemblies are connected one by one corresponding to the baluns;

[0019] The arrangement direction of the two groups of connecting assemblies is perpendicular to the first direction, and the arrangement direction and the second direction have an included angle.

[0020] In one embodiment, the cavity structure includes two cavities separated along the first direction, with two sets of phase-shifting cavity groups located in one of the cavities and a clearance cavity provided between the two sets of phase-shifting cavity groups; the other cavity has two transition cavities separated along the second direction, and each of the two transition cavities has a transition structure.

[0021] The end of the balun furthest from the radiating arm passes through the reflector and extends into the recess cavity; one end of each of the two feeders passes into the two transition cavities, and one end of each feeder is connected to the transition structure; the two transition cavities correspond one-to-one with the two sets of phase-shifting cavity groups, and the transition structure in each transition cavity extends into the corresponding phase-shifting cavity group and is connected to the phase-shifting network.

[0022] A base station includes an antenna cover and a base station antenna device as described in any of the above embodiments, wherein the antenna cover is connected to the reflector and covers the outside of the radiating element.

[0023] The aforementioned base station antenna device and base station, by setting a connecting part on the outer wall of the balun, with the connecting part and the cavity structure located on opposite sides of the reflector, allow for the sequential fixation of the three components—the radiating element, the reflector, and the cavity structure—through fastening parts. This allows the radiating element and the cavity structure housing the phase-shifting network to be simultaneously fixed to the reflector in a single operation, saving assembly steps. Furthermore, since the radiating element and the cavity structure can share a fastening part for fixing to the reflector, the number of fastening parts required is reduced. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a base station antenna device according to an embodiment.

[0025] Figure 2 for Figure 1 The structure explodes diagram.

[0026] Figure 3 for Figure 1 The front view.

[0027] Figure 4 This is a schematic diagram of the connection structure of the radiating arm, balun, and connecting part in one embodiment.

[0028] Figure 5 for Figure 4 Top view.

[0029] Figure 6 This is a schematic diagram of the connection structure of the radiating arm, balun, and connecting part in another embodiment.

[0030] Figure 7 for Figure 6 Top view.

[0031] Figure 8 Fig. 1 is a structure diagram of a base station antenna device according to an embodiment of the present application. Figure 3

[0032] Figure 9 Fig. 2 is a structure diagram of a base station antenna device according to another embodiment of the present application.

[0033] Figure 10 Fig. 3 is an exploded view of the base station antenna device of Fig. 2. Figure 9

[0034] Figure 11 Fig. 4 is a front view of the base station antenna device of Fig. 2. Figure 10

[0035] Figure 12 Fig. 5 is a structure diagram of two feeders and four phase shift networks in the base station antenna device of Fig. 2. Figure 9

[0036] Figure 13 Fig. 6 is a structure diagram of a base station antenna device according to another embodiment of the present application.

[0037] Figure 14 Fig. 7 is a structure diagram of a cavity according to an embodiment of the present application.

[0038] Figure 15 Fig. 8 is an exploded view of a connection between a first signal line, a second signal line and an adapter according to an embodiment of the present application.

[0039] Figure 16 Fig. 9 is an exploded view of a connection between a first signal line, a second signal line and an adapter according to another embodiment of the present application.

[0040] Figure 17 Fig. 10 is an exploded view of a connection between a first signal line, a second signal line and an adapter according to yet another embodiment of the present application.

[0041] Figure 18 Fig. 11 is an exploded view of a connection between a first signal line, a second signal line and an adapter according to still another embodiment of the present application.

[0042] BRIEF DESCRIPTION OF THE DRAWINGS

[0043] ZZ' first direction; XX', second direction; YY', third direction;

[0044] 100, reflector plate; 101, second connection hole;

[0045] ​​​​200a, radiation unit column; 200, radiation unit; 210, radiation arm; 210a, first radiation arm; 211a, first avoiding groove; 210b, second radiation arm; 211b, second avoiding groove; 211, avoiding hole; 212, hollowed area; 220, balun; 220a, first balun; 220b, second balun; 230, feed; 230a, first feed; 230b, second feed; 240, loading sheet;

[0046] 300, cavity structure; 301a, first phase-shifting cavity group; 301b, second phase-shifting cavity group; 301, phase-shifting cavity; 310, phase-shifting network; 302, avoiding cavity; 3021, third opening; 303a, first switching cavity; 303b, second switching cavity; 3031, first opening; 3032, second opening; 320, switching structure; 321, combining network; 322, switching piece; 323, first switching section; 3231, first clamping groove; 324, second switching section; 3241, second clamping groove; 330, separation wall;

[0047] 400, connecting assembly; 410, connecting part; 411, first connecting hole; 420, fastening part;

[0048] 611, first signal line; 6111, first main section; 6112, first bending section; 6112a, first bending subsection; 6112b, second bending subsection;

[0049] 621, second signal line; 6211, second main section; 6212, second bending section; 6212a, third bending subsection; 6212b, fourth bending subsection;

[0050] 601, first positioning slot; 602, second positioning slot; 631, positioning boss; 632, limiting boss. DETAILED DESCRIPTION

[0051] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0052] In the description of the application, it should be understood that, if there are these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, these terms 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 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 application.

[0053] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this application, unless otherwise explicitly specified and limited, if there are terms such as "mounting", "connecting", "connecting", "fixing" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; 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; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0055] In this application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on or under the second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of 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" of 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.

[0056] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0057] Please combine Figures 1 to 3 One embodiment of this application provides a base station antenna device, which includes: a reflector 100, a cavity structure 300, a radiating element 200, and a connecting component 400.

[0058] The radiating unit 200 includes a radiating arm 210, a balun 220, and a power supply component 230. One end of the balun 220 is connected to the radiating arm 210, and the power supply component 230 is inserted through the balun 220.

[0059] The cavity structure 300 and the radiating arm 210 are located on both sides of the reflector 100 along the first direction ZZ', where the first direction ZZ' is the thickness direction of the reflector 100. A phase-shifting network 310 is provided inside the cavity structure 300. The end of the feeder 230 away from the radiating arm 210 is connected to the phase-shifting network 310.

[0060] The connecting assembly 400 includes a connecting portion 410 and a fastening portion 420. The connecting portion 410 is fixed to the outer wall of the balun 220 and is located on the side of the reflector 100 facing away from the cavity structure 300. The fastening portion 420 is sequentially inserted through the connecting portion 410, the reflector 100, and the cavity wall of the cavity structure 300 to fix the connecting portion 410, the reflector 100, and the cavity wall of the cavity structure 300.

[0061] The aforementioned base station antenna device, by providing a connecting part 410 on the outer wall of the balun 220, with the connecting part 410 and the cavity structure 300 located on opposite sides of the reflector 100 respectively, allows the fastening part 420 to sequentially pass through the connecting part 410, the reflector 100, and the cavity structure 300 to fix the three components, namely the radiating element 200, the reflector 100, and the cavity structure 300. In this way, the radiating element 200 and the cavity structure 300 for accommodating the phase-shifting network 310 can be simultaneously fixed to the reflector 100 in a single operation, saving assembly steps. Furthermore, since the radiating element 200 and the cavity structure 300 can share the fastening part 420 for fixing to the reflector 100, the number of fastening parts 420 is reduced.

[0062] refer to Figure 4 The connecting part 410 is provided with a first connecting hole 411. (Reference) Figure 2The reflecting plate 100 is provided with a second connecting hole 101. The cavity wall of the cavity structure 300 near one end of the reflecting plate 100 is provided with a third connecting hole. The fastening part 420 is sequentially inserted into the first connecting hole 411, the second connecting hole 101 and the third connecting hole, so as to fix the connecting part 410, the reflecting plate 100 and the cavity wall of the cavity structure 300.

[0063] With reference to Figure 2 In some embodiments, the cavity wall of the cavity structure 300 near one end of the reflecting plate 100 is provided with a threaded hole (i.e. the third connecting hole). The fastening part 420 includes a rod part and a head part, and the head part is connected to one end of the rod part. The end of the rod part away from the head part is sequentially inserted into the connecting part, the reflecting plate 100 and screwed into the threaded hole.

[0064] Specifically, the end of the rod part away from the head part can be sequentially inserted into the first connecting hole 411 and the second connecting hole 101. The third connecting hole is a threaded hole, so that the rod part is screwed into the third connecting hole until the head part abuts against the side of the connecting part 410 away from the reflecting plate 100, and then the connecting part 410, the reflecting plate 100 and the cavity wall of the cavity structure 300 can be fixed.

[0065] In this way, the connecting part 410 abuts against the reflecting plate 100, and the cavity structure 300 abuts against the reflecting plate 100, which is beneficial to the reliable fixation of the connecting part 410, the reflecting plate 100 and the cavity wall of the cavity structure 300.

[0066] Specifically, the fastening part 420 can be a bolt, and the rod part is a screw rod.

[0067] In some embodiments, the connecting part 410 and the balun 220 are an integrally formed structure, which can be formed at the same time when the balun 220 is processed, facilitating processing and reliable connection between the connecting part 410 and the balun 220.

[0068] With reference to Figures 1 to 3 In some embodiments, the radiation unit 200 is a dual-polarized radiation unit, which includes two pairs of radiation arms 210 of orthogonal polarization, two baluns 220 and two feeders 230, and the two feeders 230 correspond to the two baluns 220 one by one. The feeder 230 is inserted into the corresponding balun 220. The two baluns 220 are respectively a first balun 220a and a second balun 220b. The two feeders 230 are respectively a first feeder 230a and a second feeder 230b.

[0069] The cavity structure 300 includes two groups of phase shift cavity groups arranged along a second direction XX'. The second direction XX' is perpendicular to the first direction ZZ'. The two groups of phase shift cavity groups are defined as a first group of phase shift cavity groups and a second group of phase shift cavity groups. Each group of phase shift cavity groups has at least one phase shift cavity 301. The number of phase shift cavities 301 in the two groups of phase shift cavity groups is the same. The phase shift network 310 is arranged in each group of phase shift cavity groups. Specifically, the phase shift network 310 is arranged in each phase shift cavity 301.

[0070] The two feeders 230 correspond to the two groups of phase shift cavity groups one by one. The end of the feeder 230 away from the radiation arm 210 is connected to the phase shift network 310 in the corresponding phase shift cavity group. Specifically, the end of the first feeder 230a passes through the first balun 220a and is connected to the phase shift network 310 in the phase shift cavity 301 of the first group of phase shift cavity groups. The end of the second feeder 230b passes through the second balun 220b and is connected to the phase shift network 310 in the phase shift cavity 301 of the second group of phase shift cavity groups.

[0071] In the embodiments of the present application, a group of phase shift cavities is defined. The cavity structure 300 includes two groups of phase shift cavity groups arranged along the second direction XX'. The reason why it is called a group of phase shift cavities is that each group of phase shift cavities is composed of at least one phase shift cavity. The number of phase shift cavities in the two groups of phase shift cavity groups is the same. Specifically, each group of phase shift cavities can have one phase shift cavity, or more than two phase shift cavities. The phase shift network is arranged in each phase shift cavity.

[0072] In some embodiments, the end of the feeder 230 away from the radiation arm 210 can penetrate into the corresponding phase shift cavity 301 and be connected to the corresponding phase shift network 310. Specifically, the end of the first feeder 230a away from the radiation arm 210 passes through the first balun 220a and penetrates into the phase shift cavity 301 of the first group of phase shift cavity groups, thereby being connected to the corresponding phase shift network 310. The end of the second feeder 230b away from the radiation arm 210 passes through the second balun 220b and penetrates into the phase shift cavity 301 of the first group of phase shift cavity groups, thereby being connected to the corresponding phase shift network 310.

[0073] Please refer to Figure 4 and Figure 5In some embodiments, a first virtual axis along the first direction ZZ' is defined, and a second virtual axis along the third direction YY' is defined. The third direction YY' is perpendicular to the first direction ZZ' and perpendicular to the second direction XX', and the first virtual axis is perpendicular to the second virtual axis. The first virtual axis and the second virtual axis intersect, thereby dividing four quadrants. There are four radiation arms 210 in total, two pairs of radiation arms 210. The four radiation arms 210 are located in the four quadrants one by one. In the orthogonal dual-polarized radiation unit, one pair of diagonally arranged radiation arms 210 (located in the first quadrant and the third quadrant respectively) are 45° polarized, and the other pair of diagonally arranged radiation arms 210 (located in the second quadrant and the fourth quadrant respectively) are -45° polarized, so that the two pairs of radiation arms 210 constitute orthogonal polarization.

[0074] The two adjacent radiation arms 210 along the third direction YY' are provided with avoidance grooves opposite to each other on the side close to each other, and the two avoidance grooves opposite to each other enclose an avoidance hole 211. The avoidance hole 211 is provided one by one with the fastening part 420. The fastening part 420 is located in the projection range of the outline of the corresponding avoidance hole 211 on the reflection plate 100, and the avoidance hole 211 is used for the operation tool operating the fastening part 420 to pass through.

[0075] Specifically, the two adjacent radiation arms 210 along the third direction YY' are defined as the first radiation arm 210a and the second radiation arm 210b respectively. In this embodiment, since the four radiation arms 210 are located in the four quadrants respectively, there are two columns of first radiation arms 210a and second radiation arms 210b adjacent along the third direction YY' in total.

[0076] Among the two adjacent radiation arms 210 along the third direction YY', the first radiation arm 210a is provided with a first avoidance groove 211a on the side close to the second radiation arm 210b, and the second radiation arm 210b is provided with a second avoidance groove 211b on the side close to the first radiation arm 210a, and the first avoidance groove 211a and the second avoidance groove 211b enclose the avoidance hole 211.

[0077] Since the fastening part 420 is located in the projection range of the outline of the corresponding avoidance hole 211 on the reflection plate 100, the position of the fastening part 420 corresponds to the position of the corresponding avoidance hole 211 along the first direction ZZ', so that the operation tool can operate the fastening part 420 after passing through the avoidance hole 211, and the fastening part 420 can pass through the connecting part 410, the reflection plate 100 and the cavity wall of the cavity structure 300.

[0078] It can be understood that when the fastening part 420 is a bolt, the operation tool can be a screwdriver.

[0079] Please refer to Figure 4 and Figure 5In some embodiments, the number of the connecting assemblies 400 is two groups, and the two groups of the connecting assemblies 400 are arranged along the second direction XX'. The connecting assemblies 400 are connected with the baluns 220 in a one-to-one correspondence. The two baluns 220 are arranged along the second direction XX', and the two groups of the connecting assemblies 400 are respectively located on the sides of the two baluns 220 away from each other along the second direction XX'.

[0080] Among the two groups of the connecting assemblies 400, one group of the connecting assemblies 400 is arranged on the side of the first balun 220a away from the second balun 220b along the second direction XX', and the other group of the connecting assemblies 400 is arranged on the side of the second balun 220b away from the first balun 220a along the second direction XX'. In this way, two groups of the connecting assemblies 400 can be arranged in the present embodiment, so that the radiation unit 200, the reflector plate 100, and the cavity structure 300 are reliably connected.

[0081] Please refer to Figure 6 and Figure 7 In other embodiments, the radiation arm 210 is provided with a hollow region 212 penetrating along the first direction ZZ'. The fastening part 420 is located in the projection range of the outline of the corresponding hollow region 212 on the reflector plate 100.

[0082] Since the fastening part 420 is located in the projection range of the outline of the corresponding hollow region 212 on the reflector plate 100, the position of the fastening part 420 corresponds to the position of the corresponding hollow region 212 along the first direction ZZ', so that the fastening part 420 can be operated after the operating tool passes through the hollow region 212, facilitating the fastening part 420 to pass through the connecting part 410, the reflector plate 100, and the cavity wall of the cavity structure 300.

[0083] In the present embodiment, the fastening part 420 is arranged in the projection range of the outline of the corresponding hollow region 212, so that the fastening part 420 can be operated by means of the hollow region 212 on the radiation arm 210 itself, without the need to specially open an avoiding hole 211.

[0084] Please refer to Figure 6 and Figure 7 In some embodiments, the number of the connecting assemblies 400 is two groups, and the number of the connecting assemblies 400 is two groups. The connecting assemblies 400 are connected with the baluns 220 in a one-to-one correspondence. The arrangement direction of the two groups of the connecting assemblies 400 is perpendicular to the first direction ZZ', and the arrangement direction of the two groups of the connecting assemblies 400 has an included angle with the second direction XX'. The two baluns 220 are arranged along the second direction XX'.

[0085] Of the two sets of connecting components 400, one set is connected to the first balun 220a, and the other set is connected to the second balun 220b. By making an angle between the arrangement direction of the two sets of connecting components 400 and the second direction XX', the fastening portions 420 of the two sets of connecting components 400 are located in the hollow areas 212 of the two different radiating arms 210, respectively. In this embodiment, two sets of connecting components 400 can be provided, thereby ensuring a reliable connection between the radiating unit 200, the reflector 100, and the cavity structure 300.

[0086] Optionally, the angle between the arrangement direction of the two sets of connecting components 400 and the second direction XX' is 45°. In this way, the positions of the first connecting hole 411 and the fastening part 420 can be located as close as possible to the center of the projection range of the corresponding hollow area 212, which facilitates operation.

[0087] Alternatively, please refer to Figure 6 and Figure 7 The positions of the two sets of connecting components 400 correspond to the positions of the two radial arms 210 in the first and third quadrants, that is, the fastening parts 420 of the two sets of connecting components 400 correspond to the hollow areas 212 of the two radial arms 210 in the first and third quadrants, respectively.

[0088] The end of the connecting portion 410 facing away from the corresponding balun 220 is inclined relative to the second direction XX'. Optionally, the inclination angle of the end of the connecting portion 410 facing away from the corresponding balun 220 relative to the second direction XX' is 45°. In this way, the positions of the first connecting hole 411 and the fastening portion 420 can be located as close as possible to the center of the projection range of the outline of the corresponding hollow area 212, which facilitates operation.

[0089] In another embodiment, the number of connecting components 400 can also be four sets. Two sets of connecting components 400 are connected to the first balun 220a, and the other two sets of connecting components 400 are connected to the second balun 220b. The four sets of connecting components 400 have a total of four fastening parts 420. The four fastening parts 420 correspond one-to-one with the hollow areas 212 of the four radial arms 210, so that the four fastening parts 420 can be operated through the four hollow areas 212 respectively.

[0090] In some of the above embodiments, the end of the feed element 230 away from the radiating arm 210 passes through the corresponding phase-shifting cavity 301 and is connected to the phase-shifting network 310. However, Figures 1 to 3 , Figures 9 to 11 In the illustrated embodiment, the end of the feeder 230 furthest from the radiating arm 210 passes through a corresponding adapter cavity and is indirectly connected to the phase-shifting network 310 via a corresponding adapter structure. See the descriptions of the embodiments below for details.

[0091] Please combineFigures 1 to 3 In some embodiments, the cavity structure 300 includes two layers of cavities separated along the first direction ZZ', one of which is provided with two groups of phase shift cavities, and a space cavity 302 is arranged between the two groups of phase shift cavities; the other layer of cavities is provided with two relay cavities separated along the second direction XX', and a relay structure 320 is arranged in each of the two relay cavities. The two relay cavities are a first relay cavity 303a and a second relay cavity 303b. The relay structure 320 in the first relay cavity 303a is a first relay structure 320a. The relay structure 320 in the second relay cavity 303b is a second relay structure 320b.

[0092] The end of the balun 220 away from the radiating arm 210 passes through the reflector plate 100 and extends into the space cavity 302. The ends of the two feeders 230 pass into the two relay cavities one by one, and the ends of the feeders 230 are connected to the relay structures 320. The two relay cavities correspond to the two groups of phase shift cavities one by one, and the relay structure 320 in the relay cavity extends into the corresponding group of phase shift cavities and is connected to the phase shift network 310.

[0093] Specifically, the end of the first feeder 230a passes through the first balun 220a and the bottom of the space cavity 302, and then extends into the first relay cavity 303a and is connected to the first relay structure 320a. The first relay structure 320a extends into the phase shift cavity 301 of the first group of phase shift cavities and is connected to the phase shift network 310 in the phase shift cavity 301 of the first group of phase shift cavities. In this way, the first feeder 230a is indirectly connected to the phase shift network 310 in the first group of phase shift cavities through the first relay structure 320a.

[0094] The end of the second feeder 230b passes through the second balun 220b and the bottom of the space cavity 302, and then extends into the second relay cavity 303b and is connected to the second relay structure 320b. The second relay structure 320b extends into the phase shift cavity 301 of the second group of phase shift cavities and is connected to the phase shift network 310 in the phase shift cavity 301 of the second group of phase shift cavities. In this way, the second feeder 230b is indirectly connected to the phase shift network 310 in the second group of phase shift cavities through the second relay structure 320a.

[0095] Because the space cavity 302 is arranged between the two groups of phase shift cavities, the end of the balun 220 away from the radiating arm 210 can pass through the reflector plate 100 and extend into the space cavity 302. The end of the feeder 230 passes through the corresponding balun 220 and the bottom of the space cavity 302 and extends into the corresponding relay cavity, and is connected to the corresponding relay structure 320. The relay structure 320 extends into the corresponding group of phase shift cavities and is connected to the corresponding phase shift network 310, so that the feeder 230 is indirectly connected to the corresponding phase shift network 310 through the corresponding relay structure 320.

[0096] When the base station antenna device is maintained, if the electrical connection between the feed element 230 and the corresponding phase shift network 310 needs to be removed, only the electrical connection between the feed element 230 and the corresponding switching structure 320 needs to be removed. Since the connection position of the feed element 230 and the switching structure 320 is located in the corresponding switching cavity, when the electrical connection between the connection position of the feed element 230 and the switching structure 320 in the switching cavity is removed (that is, when the electrical connection between the feed element 230 and the phase shift network 310 is removed), the operation position is located in the switching cavity in one of the two layers of cavities, so as not to affect the welding reliability of other welding points in the phase shift cavity 301 in the other layer of cavities.

[0097] In some technical solutions, the phase shift network can be grounded through the grounding conductor connected with the phase shift cavity. The above-mentioned other welding points in the phase shift cavity 301 are, for example, the welding points between the grounding conductor and the cavity wall of the phase shift cavity, the welding points between the phase shift network and the grounding conductor, and the like. The types of the above-mentioned other welding points are not listed one by one, and can be referred to the prior art.

[0098] Further, since the balun 220 extends into the avoidance cavity 302, and the corresponding feed element 230 passes through the balun 220 and the cavity bottom of the avoidance cavity 302, the inner cavity of the balun 220 forms a resonance cavity in the avoidance cavity 302 at the same time, which is beneficial to improve the filtering characteristics of the high-frequency radiation unit to the low-frequency radiation unit and improve the radiation efficiency of the base station antenna.

[0099] Please refer to Figures 1 to 3 In some embodiments, the radiation unit 200 further comprises a loading sheet 240. The loading sheet 240 is located on the side of the radiation arm 210 away from the balun 220 and is spaced apart from the radiation arm 210.

[0100] Optionally, the radiation unit further comprises a support part (not shown). One end of the support part is connected to the side of the radiation arm 210 away from the balun 220, and the other end of the support part is connected to the loading sheet 240, so that the loading sheet 240 is spaced apart from the radiation arm 210.

[0101] Please refer to Figures 1 to 3 In some embodiments, the number of phase shift cavities 301 in each group of phase shift cavity groups is one. The phase shift network 310 is arranged in each phase shift cavity 301. The phase shift network 310 in the phase shift cavity 301 of the first group of phase shift cavity groups is a first phase shift network 310a. The phase shift network 310 in the phase shift cavity 301 of the second group of phase shift cavity groups is a second phase shift network 310b.

[0102] In some embodiments, at the connection position of the switching structure 320 and the corresponding phase shift network 310, one of the switching structure 320 and the phase shift network 310 is provided with a clamping slot, and the other is positioned and matched with the clamping slot.

[0103] Again, please refer toFigure 8 The adapter structure 320 comprises a first adapter section 323 and a second adapter section 324. One end of the first adapter section 323 is connected with one end of the second adapter section 324. The first adapter section 323 extends along the first direction ZZ’. The first adapter section 323 extends away from the one end of the second adapter section 324 into the corresponding phase shift cavity 301 and is connected with the corresponding phase shift network 310. The one end of the feed 230 extending into the adapter cavity is connected with the one end of the second adapter section 324 of the corresponding adapter structure 320 away from the first adapter section 323.

[0104] Optionally, the one end of the first adapter section 323 away from the second adapter section 324 is provided with a first clamping groove 3231. The phase shift network 310 is positioned and matched with the first clamping groove 3231, thereby facilitating the welding and fixing of the phase shift network 310 with the first adapter section 323.

[0105] Optionally, the one end of the second adapter section 324 away from the first adapter section 323 is provided with a second clamping groove 3241. The feed 230 is positioned and matched with the second clamping groove 3241, thereby facilitating the welding and fixing of the feed 230 with the second adapter section 324.

[0106] Please refer to Figures 9 to 11 In some other embodiments, each group of phase shift cavity groups comprises a plurality of phase shift cavities 301 sequentially separated along the second direction XX’. Each phase shift cavity 301 is provided with a phase shift network 310 therein. The working frequency bands of the phase shift networks 310 in the phase shift cavities 301 in the same group of phase shift cavity groups are different from each other.

[0107] The adapter structure 320 comprises a combining network 321. One end of the feed 230 is connected with the combining network 321. The phase shift networks 310 in the phase shift cavities 301 in the same group of phase shift cavity groups are respectively connected with the combining network 321 in the corresponding adapter cavity. The phase shift networks 310 in the phase shift cavities 301 in the first group of phase shift cavity groups are respectively connected with the combining network 321 in the first adapter structure 320a. The phase shift networks 310 in the phase shift cavities 301 in the second group of phase shift cavity groups are respectively connected with the combining network 321 in the second adapter structure 320b.

[0108] Since the phase shift networks 310 in the phase shift cavities 301 in the same group of phase shift cavity groups are respectively connected with the combining network 321 in the corresponding adapter cavity, the phase shift networks 310 in the same group of phase shift cavity groups can be connected with the same feed 230 through the corresponding combining network 321, thereby realizing the combining of the phase shift networks 310 with different working frequency bands.

[0109] Specifically in the embodiments shown in Figures 9 to 11 each group of phase shift cavity groups comprises two phase shift cavities 301. The working frequency bands of the phase shift networks 310 in the two phase shift cavities 301 in the same group of phase shift cavity groups are different from each other. Further referring toFigure 12 The phase shift networks 310 in the two phase shift cavities 301 of the first group of phase shift cavity groups are respectively a first phase shift network 310a and a third phase shift network 310c. The first phase shift network 310a and the third phase shift network 310c have different working frequency bands, and are respectively electrically connected with the combining network 321 in the first switching structure 320a.

[0110] The phase shift networks 310 in the two phase shift cavities 301 of the second group of phase shift cavity groups are respectively a second phase shift network 310b and a fourth phase shift network 310d. The second phase shift network 310b and the fourth phase shift network 310d have different working frequency bands, and are respectively electrically connected with the combining network 321 in the second switching structure 320b.

[0111] In other embodiments, each group of phase shift cavity groups can also include three or more phase shift cavities, and the phase shift networks in the phase shift cavities in the same group of phase shift cavity groups have different working frequency bands.

[0112] Reference Figure 12 In some embodiments, the switching structure 320 further includes a switching piece 322 corresponding to the phase shift cavity 301. One end of the switching piece 322 is located in the switching cavity and connected with the combining network 321, and the other end of the switching piece 322 extends into the corresponding phase shift cavity 301 and is connected with the phase shift network 310.

[0113] Specifically, the number of switching pieces 322 in each switching structure 320 is the same as the number of phase shift cavities 301 in the corresponding group of phase shift cavities, so that the plurality of switching pieces 322 in each switching structure 320 can be connected with the phase shift networks 310 in the plurality of phase shift cavities 301 one by one, thereby facilitating the connection of the phase shift networks 310 in the plurality of phase shift cavities 301 in the same group of phase shift cavity groups with the combining network 321 in the corresponding switching cavity.

[0114] In Figure 12 In the embodiment shown, each switching structure 320 includes two switching pieces 322, and the two phase shift networks 310 in the two phase shift cavities 301 in the same group of phase shift cavities are respectively connected with the combining network 321 in the corresponding switching cavity through the two switching pieces 322.

[0115] In some embodiments, at the connection between the switching piece 322 and the corresponding phase shift network 310, one of the switching piece 322 and the phase shift network 310 is provided with a clamping slot, and the other is positioned and matched with the clamping slot. Specifically, the end of the switching piece 322 extending into the phase shift cavity 301 can be provided with a clamping slot, and the phase shift network 310 is matched with the clamping slot on the switching piece 322, thereby facilitating the welding and fixation of the phase shift network 310 and the switching piece 322.

[0116] Please refer to Figure 13In some embodiments, the base station antenna device includes a column of radiating element columns 200a. Of course, the base station antenna device can also include multiple columns of radiating element columns 200a arranged along the second direction XX'.

[0117] Each column of radiating element columns 200a includes a plurality of radiating elements 200 arranged along a third direction YY' in sequence. The third direction YY' is perpendicular to the first direction ZZ' and perpendicular to the second direction XX'. The number of cavity structures 300 is the same as the number of columns of radiating element columns 200a. The cavity structures 300 correspond to the columns of radiating element columns 200a one by one. The length direction of the cavity structure 300 corresponds to the column direction of the corresponding column of radiating element columns 200a.

[0118] Each adapter cavity is provided with a plurality of adapter structures 320 arranged along the third direction YY' in sequence. The plurality of adapter structures 320 in each adapter cavity correspond to the plurality of radiating elements 200 in the corresponding column of radiating element columns 200a one by one. The feed 230 in the radiating element 200 passes through the cavity bottom of the avoidance cavity 302 into the adapter cavity and is connected to the corresponding adapter structure 320.

[0119] Specifically, the first adapter cavity 303a is provided with a plurality of first adapter structures 320a arranged along the third direction YY' in sequence, and the plurality of first adapter structures 320a correspond to the plurality of radiating elements 200 in the corresponding column of radiating element columns 200a one by one. The second adapter cavity 303b is provided with a plurality of second adapter structures 320b arranged along the third direction YY' in sequence, and the plurality of second adapter structures 320b correspond to the plurality of radiating elements 200 in the corresponding column of radiating element columns 200a one by one. The first feed 230a in each radiating element 200 passes through the cavity bottom of the avoidance cavity 302 into the first adapter cavity 303a and is connected to the corresponding first adapter structure 320a. The second feed 230b in each radiating element 200 passes through the cavity bottom of the avoidance cavity 302 into the second adapter cavity 303b and is connected to the corresponding second adapter structure 320b.

[0120] Optionally, the connection mode of the feed 230 and the corresponding adapter structure 320 is welding. Therefore, the feed 230 and the adapter structure 320 can be welded or unwelded in the adapter cavity. Since the connection position of the feed 230 and the adapter structure 320 is located in the corresponding adapter cavity, all the adapter structures 320 and the corresponding feeds 230 in the same adapter cavity can be unwelded at the same time, and the welding reliability of other welding points in the phase-shifting cavity 301 will not be affected during unwelding, so that all the adapter structures 320 and the corresponding feeds 230 in the same adapter cavity can be quickly electrically disconnected, and the maintenance efficiency is improved.

[0121] Please refer to Figures 1 to 3 , Figures 9 to 11In some embodiments, the two adapter cavities have openings on the sides facing away from each other along the second direction XX'. In this way, the plurality of adapter structures 320 arranged along the third direction YY' can be put into or removed from the corresponding adapter cavities through the corresponding openings, facilitating assembly or disassembly. Moreover, when performing the operation of connecting or disconnecting the adapter structures 320 and the corresponding feeders 230, the operation can be performed through the corresponding openings into the adapter cavities, thereby facilitating the operation.

[0122] Specifically, the side of the first adapter cavity 303a facing away from the second adapter cavity 303b has a first opening 3031, and the side of the second adapter cavity 303b facing away from the first adapter cavity 303a has a second opening 3032. In this way, the plurality of first adapter structures 320a arranged along the third direction YY' can be put into or removed from the first adapter cavity 303a from the first opening 3031, and the plurality of second adapter structures 320b arranged along the third direction YY' can be put into or removed from the second adapter cavity 303b from the second opening 3032, thereby facilitating assembly or disassembly.

[0123] Moreover, when performing the operation of connecting or disconnecting the first adapter structures 320a and the corresponding first feeders 230a, the operation can be performed through the first opening 3031 into the first adapter cavity 303a, thereby facilitating the operation. Similarly, when performing the operation of connecting or disconnecting the second adapter structures 320b and the corresponding second feeders 230b, the operation can be performed through the second opening 3032 into the second adapter cavity 303b, thereby facilitating the operation.

[0124] Please refer to Figure 10 In some embodiments, the avoidance cavity 302 has a third opening 3021 at one end close to the reflector plate 100. The balun 220 extends into the avoidance cavity 302 through the third opening 3021. The reflector plate 100 covers the third opening 3021. In this way, after the balun 220 passes through the reflector plate 100, it can extend into the avoidance cavity 302 through the third opening 3021.

[0125] In some embodiments, the balun 220 abuts the bottom of the avoidance cavity 302. In other embodiments, there can also be a gap between the balun 220 and the bottom of the avoidance cavity 302.

[0126] In an embodiment, the cavity structure 300 is divided into two cavity modules arranged along the second direction XX', which are respectively a first cavity module and a second cavity module. Each cavity module includes a group of adapter cavities and phase shift cavities adjacent along the first direction ZZ'. Please refer to Figure 14In particular, the first cavity module includes a first adapter cavity 303a and a first phase shift cavity group 301a adjacent along the first direction ZZ'. The second cavity module includes a second adapter cavity 303b and a second phase shift cavity group 301b adjacent along the first direction ZZ'. The adapter cavity and the phase shift cavities 301 of the corresponding phase shift cavity group are separated by a partition wall 330. The partition wall 330 separates the adapter cavity and the phase shift cavities 301 of the corresponding phase shift cavity group.

[0127] The combining network 321 has a first signal line 611 including a first main segment 6111 and a first bent segment 6112. The first main segment 6111 is parallel to the partition wall 330. The first bent segment 6112 is connected to one end of the first main segment 6111 and is bent towards the partition wall 330 compared to the first main segment 6111.

[0128] The phase shift network 310 has a second signal line 621. The first signal line 611, the second signal line 621 and the adapter 322 are correspondingly arranged. The adapter 322 is arranged through the partition wall 330, one end of the adapter 322 is located in the adapter cavity and connected to the corresponding first bent segment 6112, and the other end of the adapter 322 is located in the phase shift cavity 301 and connected to the corresponding second signal line 621.

[0129] Since the first bent segment 6112 is bent towards the partition wall 330 compared to the first main segment 6111, the first bent segment 6112 can be closer to the partition wall 330 compared to the first main segment 6111. In this way, the first signal line 611 can be closer to the second signal line 621 through the first bent segment 6112, the distance between the first signal line 611 and the second signal line 621 is shortened (compared to the first signal line without the first bent segment), and the connection distance of the adapter 322 can be shortened, thereby weakening the discontinuity of the signal transmission between the first signal line 611 (combining network 321) and the second signal line 621 (phase shift network 310) in two different cavities, and improving the signal transmission effect.

[0130] Optionally, the combining network 321 adopts a sheet metal network. The phase shift network 310 adopts a sheet metal network.

[0131] Optionally, the first signal line 611 adopts a sheet metal strip line. The second signal line 621 adopts a sheet metal strip line.

[0132] Please refer to Figure 14In some embodiments, the first bending segment 6112 includes a first bending sub-segment 6112a and a second bending sub-segment 6112b. One end of the first bending sub-segment 6112a is connected to one end of the first main segment 6111, and the first bending sub-segment 6112a is bent towards the partition wall 330 compared to the first main segment 6111. One end of the second bending sub-segment 6112b is connected to one end of the first bending sub-segment 6112a away from the first main segment 6111, and the second bending sub-segment 6112b is parallel to the partition wall 330.

[0133] By bending the first bending sub-segment 6112a towards the partition wall 330, the distance between the first signal line 611 and the second signal line 621 is shortened. At the same time, by bending the second bending sub-segment 6112b parallel to the partition wall 330, the adapter 322 is facilitated to be connected to the second bending sub-segment 6112b, i.e., the adapter 322 is facilitated to be connected to the first signal line 611.

[0134] It can be understood that the extension direction of the adapter 322 is along a first direction ZZ', and the first direction ZZ' is along the thickness direction of the partition wall 330. The adapter 322 is arranged along the first direction ZZ' in the partition wall. Since the second bending sub-segment 6112b is parallel to the partition wall 330, the second bending sub-segment 6112b is perpendicular to the extension direction of the adapter 322, thereby facilitating the connection between the second bending sub-segment 6112b and the adapter 322.

[0135] In an embodiment, the adapter cavity and the phase-shifting cavity 301 each have a length direction, a width direction and a thickness direction, and the length, the width and the thickness of the adapter cavity sequentially decrease, and the length, the width and the thickness of the phase-shifting cavity 301 sequentially decrease. The length directions of the adapter cavity and the phase-shifting cavity 301 are the same, and are along a third direction.

[0136] Please refer to Figure 13 The width direction of the phase-shifting cavity 301 is along a first direction ZZ', and the width direction of the adapter cavity is perpendicular to the first direction ZZ' and along a second direction XX'. The third direction is perpendicular to the first direction ZZ' and the second direction XX'.

[0137] Please refer to Figure 13 In an embodiment, in the phase-shifting cavity group of each cavity module, the second signal line 621 of at least one phase-shifting network 310 includes a second main segment 6211 and a second bending segment 6212, and one end of the second bending segment 6212 is connected to one end of the second main segment 6211. The second bending segment 6212 is bent compared to the second main segment 6211, and the second bending segment 6212 is parallel to the partition wall 330.

[0138] The extending direction of the second body segment 6211 can be along the width direction of the phase-shifting cavity 301, i.e., the first direction ZZ'. By bending the second bending segment 6212 relative to the second body segment 6211 so that the second bending segment 6212 is parallel to the partition wall 330, the adapter 322 is facilitated to be connected with the second bending segment 6212, i.e., the adapter 322 is facilitated to be connected with the second signal line 621.

[0139] The adapter 322 is arranged along the first direction ZZ' in the partition wall 330. Since the second bending segment 6212 is parallel to the partition wall, the second bending segment 6212 is perpendicular to the extending direction of the adapter 322, thereby facilitating the connection between the second bending segment 6212 and the adapter 322.

[0140] Figures 15 to 18 The connection structure of the adapter 322, the second signal line 621 of the corresponding phase-shifting network 310, and the first signal line 611 of the corresponding combining network 321 in four different embodiments is shown in the exploded view.

[0141] The implementation of the second signal line 621 of the first phase-shifting network 310a, the first signal line 611 of the corresponding combining network 321, and the corresponding adapter 322 can adopt the embodiment shown in Figure 16 or Figure 18 .

[0142] The implementation of the second signal line 621 of the second phase-shifting network 310c, the first signal line 611 of the corresponding combining network 321, and the corresponding adapter 322 can adopt the embodiment shown in Figure 15 or Figure 17 .

[0143] The implementation of the second signal line 621 of the third phase-shifting network 310b, the first signal line 611 of the corresponding combining network 321, and the corresponding adapter 322 can adopt the embodiment shown in Figure 16 or Figure 18 .

[0144] The implementation of the second signal line 621 of the second phase-shifting network 310d, the first signal line 611 of the corresponding combining network 321, and the corresponding adapter 322 can adopt the embodiment shown in Figure 15 or Figure 17 .

[0145] Please refer to Figures 15 to 18 In some embodiments, the adapter 322 is located at one end of the phase-shifting cavity 301 as a first connection end, and the end of the second signal line 621 connected with the adapter 322 is a first matching end. One of the first connection end and the first matching end is provided with a first positioning slot 601, and the other one is matched with the first positioning slot 601, thereby facilitating the welding of the first matching end and the first connection end.

[0146] Specifically inFigure 15 In the embodiment shown, the second signal line 621 extends along the first direction ZZ', the first main body segment 6111 extends along the third direction YY', and the second bending segment 6112b extends along the third direction YY'. The first fitting end of the second signal line 621 is provided with a first positioning groove 601, which is a groove recessed along the first direction ZZ'. The first connecting end of the adapter 322 is provided with a positioning boss 631, which protrudes along the second direction XX'. The positioning boss 631 cooperates with the first positioning groove 601.

[0147] In Figure 16 In the embodiment shown, the second signal line 621 includes a second main body segment 6211 and a second bending segment 6212, the second main body segment 6211 extends along the first direction ZZ', and the second bending segment 6212 extends along the second direction XX'. The first main body segment 6111 extends along the second direction XX', and the second bending segment 6112b extends along the second direction XX'. The first fitting end of the second signal line 621 is the end of the second bending segment 6212 away from the second main body segment 6211, and the first fitting end is provided with a first positioning groove 601. The first connecting end of the adapter 322 is provided with a positioning boss 631, which protrudes along the first direction ZZ'. The positioning boss 631 cooperates with the first positioning groove 601.

[0148] In Figure 17 In the embodiment shown, the second signal line 621 includes a second main body segment 6211 and a second bending segment 6212, the second main body segment 6211 extends along the first direction ZZ', and the second bending segment 6212 extends along the second direction XX'. The first main body segment 6111 extends along the third direction YY', and the second bending segment 6112b extends along the third direction YY'. The first fitting end of the second signal line 621 is the end of the second bending segment 6212 away from the second main body segment 6211, and the first fitting end is provided with a first positioning groove 601. The first connecting end of the adapter 322 cooperates with the first positioning groove 601.

[0149] In Figure 18In the shown embodiment, the second signal line 621 comprises a second main segment 6211 and a second bending segment 6212, the extension direction of the second main segment 6211 is along the first direction ZZ', and the extension direction of the second bending segment 6212 is along the second direction XX'. The extension direction of the first main segment 6111 is along the second direction XX', and the extension direction of the second bending segment 6112b is along the second direction XX'. The first fitting end of the second signal line 621 is an end of the second bending segment 6212 away from the second main segment 6211, and the first fitting end is provided with the first positioning groove 601. The first connecting end of the adapter 322 is provided with the positioning boss 631, and the protruding direction of the positioning boss 631 is along the first direction ZZ'. The positioning boss 631 is matched with the first positioning groove 601.

[0150] For reference Figure 16 In some embodiments, the second connecting end and the second fitting end are provided with the second positioning groove 602, and the other is matched with the second positioning groove 602, so as to facilitate welding of the second fitting end and the second connecting end.

[0151] In Figure 16 In the shown embodiment, the extension direction of the first main segment 6111 is along the second direction XX', and the extension direction of the second bending segment 6112b is along the second direction XX'. The second fitting end of the first signal line 611 is the second bending segment 6112b, and the second fitting end is provided with the second positioning groove 602. The second connecting end of the adapter 322 is provided with the limiting boss 632, and the protruding direction of the limiting boss 632 is along the first direction ZZ'. The limiting boss 632 is matched with the second positioning groove 602.

[0152] For reference Figure 15 , Figure 17 and Figure 18 In some embodiments, the second bending segment 6112b is provided with the second positioning groove 602. The adapter 322 is provided in the second positioning groove 602 along the first direction ZZ'. The first direction ZZ' is along the thickness direction of the partition wall. The end of the adapter 322 located in the adapter cavity is provided with the limiting boss 632, the limiting boss 632 is located on the side of the second bending segment 6112b away from the partition wall, and the second positioning groove 602 prevents the limiting boss 632 from passing through. When the limiting boss 632 abuts against the second bending segment 6112b during assembly, it indicates that the adapter 322 is assembled in place along the first direction ZZ', which facilitates positioning of the adapter 322 and facilitates welding of the adapter 322 and the second bending segment 6112b.

[0153] In Figure 15 , Figure 17 , Figure 18In the shown embodiment, the limiting boss 632 of the adapter 322 protrudes along the third direction YY'. The adapter 322 has the limiting boss 632 on both sides along the third direction YY'.

[0154] In Figure 15 and Figure 17 In the shown embodiment, the extending direction of the first main segment 6111 is along the third direction YY', the extending direction of the second bending segment 6112b is along the third direction YY', and the second positioning groove 602 is arranged on the second bending segment 6112b.

[0155] In Figure 18 In the shown embodiment, the extending direction of the first main segment 6111 is along the second direction XX', the extending direction of the second bending segment 6112b is along the second direction XX', and the second positioning groove 602 is arranged on the second bending segment 6112b.

[0156] The embodiments of the present application also provide a base station, which comprises a radome and the base station antenna device in any of the above embodiments, and the radome is connected with the reflecting plate 100 and covers the radiating unit 200.

[0157] The technical features of the above embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0158] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as the limitation of the patent application scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A base station antenna device, characterized in that, include: Reflector, cavity structure, radiating unit and connecting components; The radiation unit includes two pairs of orthogonally polarized radiation arms, two baluns, and two feeders. The two feeders correspond one-to-one with the two baluns. One end of each balun is connected to a radiation arm, and the feeder passes through the balun. The cavity structure and the radiating arm are respectively located on both sides of the reflector along a first direction, the first direction being the thickness direction of the reflector; the cavity structure includes two sets of phase-shifting cavity groups arranged along a second direction, the second direction being perpendicular to the first direction, and each of the two sets of phase-shifting cavity groups is provided with a phase-shifting network, and the two feeding components correspond one-to-one with the two sets of phase-shifting cavity groups; The connecting assembly includes a connecting part and a fastening part. The connecting part is fixed to the outer wall of the balun and is located on the side of the reflector facing away from the cavity structure. The fastening part passes through the connecting part, the reflector and the cavity wall of the cavity structure in sequence to fix the connecting part, the reflector and the cavity wall together. The cavity structure includes two cavities separated along the first direction, with two sets of phase-shifting cavity groups located in one of the cavities and a clearance cavity provided between the two sets of phase-shifting cavity groups; the other cavity has two transition cavities separated along the second direction, and each of the two transition cavities has a transition structure. The end of the balun furthest from the radiating arm passes through the reflector and extends into the recess cavity; One end of each of the two power supply components is inserted into one of the two adapter cavities, and one end of each power supply component is connected to the adapter structure. The two transition cavities correspond one-to-one with the two sets of phase-shifting cavity groups. The transition structure in the transition cavity extends into the corresponding phase-shifting cavity group and is connected to the phase-shifting network. Each group of phase-shifting cavities includes multiple phase-shifting cavities sequentially separated along the second direction, and each phase-shifting cavity is provided with a phase-shifting network; the operating frequency bands of the phase-shifting networks in each phase-shifting cavity in the same group of phase-shifting cavities are different; the transition structure includes a combining network, one end of the power supply component is connected to the combining network, and the phase-shifting networks in each phase-shifting cavity in the same group of phase-shifting cavities are respectively connected to the combining network in the corresponding transition cavity; The adapter structure also includes an adapter corresponding to the phase shifting cavity. One end of the adapter is located inside the adapter cavity and connected to the combining network, and the other end of the adapter extends into the corresponding phase shifting cavity and is connected to the phase shifting network.

2. The base station antenna device according to claim 1, characterized in that, The cavity wall near the reflector is provided with a threaded hole; The fastening part includes a rod and a head connected to the rod; the end of the rod away from the head passes through the connecting part and the reflector in sequence and is threaded into the threaded hole so that the head abuts against the side of the connecting part opposite to the reflector.

3. The base station antenna device according to claim 1, characterized in that, The connecting part and the balun are integrally formed.

4. The base station antenna device according to claim 1, characterized in that, A first virtual axis is defined along the first direction, and a second virtual axis is defined along a third direction. The first virtual axis and the second virtual axis intersect to divide the space into four quadrants, and the four radial arms are located in the four quadrants in a one-to-one correspondence. The third direction is perpendicular to both the first direction and the second direction. Along the third direction, two adjacent radiating arms are provided with opposing clearance grooves on their sides, and the two opposing clearance grooves together form a clearance hole; the clearance hole is provided in a one-to-one correspondence with the fastening part; the fastening part is located within the projection range of the outline of the corresponding clearance hole on the reflector plate.

5. The base station antenna device according to claim 1 or 4, characterized in that, The number of connecting components is two sets, and the two sets of connecting components are arranged along the second direction. The connecting components are connected to the balun in a one-to-one correspondence. The two baluns are arranged along the second direction, and the two sets of connecting components are respectively located on the side of the two baluns that are far away from each other along the second direction.

6. The base station antenna device according to claim 1, characterized in that, The radiating arm has a hollow area extending along the first direction; the fastening part is located within the projection range of the outline of the corresponding hollow area on the reflector plate.

7. The base station antenna device according to claim 1 or 6, characterized in that, The number of connecting components is two sets, and the connecting components are connected to the balun in a one-to-one correspondence; The two sets of connecting components are arranged perpendicular to the first direction, and the arrangement direction is at an angle to the second direction.

8. A base station, characterized in that, The device includes an antenna radome and a base station antenna device according to any one of claims 1-7, wherein the antenna radome is connected to the reflector and covers the outside of the radiating element.

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