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 radiation unit and a cavity structure; the radiation unit comprises two pairs of radiation arms of orthogonal polarization, two baluns and two feeders; the cavity structure comprises two layers of cavities separated along a first direction, one layer of cavities being provided with two groups of phase shift cavity groups arranged along a second direction and an avoidance cavity located between the two groups of phase shift cavity groups; the other layer of cavities is provided with two transfer cavities separated along the second direction; one end of each of the two feeders penetrates into the two transfer cavities in a one-to-one corresponding manner, and the end of the feeder is connected with a transfer structure; the transfer structure in the transfer cavity extends into the corresponding phase shift cavity group and is connected with a phase shift network. When the connection position of the feeder and the transfer structure in the transfer cavity is subjected to the operation of being electrically disconnected, the operation position is located in the transfer cavity in one of the two layers of cavities, so that the welding reliability of other welding points in the phase shift cavity in the other layer of cavities is not affected.

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, etc. In the related art, the radiating unit is installed on one side of the reflector plate, and the phase shifter is installed on the side of the reflector plate opposite to the radiating unit. The phase shifter comprises a phase shift cavity and a phase shift network located in the phase shift cavity, etc. The radiating unit comprises a radiating arm, a balun, a feed, etc. One end of the balun is connected with the radiating arm, and the other end of the balun is connected with the reflector plate. The feed is threaded through the balun. The end of the feed away from the radiating arm penetrates through the reflector plate and extends into the phase shift cavity, so as to be welded with the phase shift network.

[0003] When the base station antenna device is maintained, it is sometimes necessary to disengage the feed from the phase shift network to release the electrical connection between them. However, when the feed is disengaged from the phase shift network, the welding reliability of other welding points in the phase shift cavity is easily affected. SUMMARY

[0004] Therefore, it is necessary to provide a base station antenna device and a base station to solve the problem that the welding reliability of other welding points in the phase shift cavity is easily affected when the feed is disengaged from the phase shift network in the related art.

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

[0006] The radiating unit comprises two pairs of orthogonally polarized radiating arms, two baluns and two feeds. One end of the balun is connected with the radiating arm, and two feeds are threaded through the two baluns one by one. The balun is fixedly connected with the reflector plate.

[0007] The cavity structure and the radiating arm are located on two sides of the reflector plate along a first direction respectively. The cavity structure is fixedly connected with the reflector plate. The cavity structure comprises two layers of cavities separated along the first direction. One layer of cavities is provided with two groups of phase shift cavities arranged along a second direction and an avoidance cavity located between the two groups of phase shift cavities. The second direction is perpendicular to the first direction. The two groups of phase shift cavities are respectively provided with a phase shift network. The other layer of cavities is provided with two transfer cavities separated along the second direction. The two transfer cavities are respectively provided with a transfer structure.

[0008] The balun passes through the reflecting plate and extends into the avoiding cavity away from one end of the radiating arm; one end of each of the two feeders penetrates into one of the two switching cavities, and the feeder end is connected with the switching structure; the two switching cavities correspond to the two groups of phase-shifting cavities, and the switching structure in the switching cavity extends into the corresponding group of phase-shifting cavities and is connected with the phase-shifting network.

[0009] In an embodiment, one side of each of the two switching cavities away from each other along the second direction has an opening.

[0010] In an embodiment, each group of phase-shifting cavities includes a plurality of phase-shifting cavities sequentially separated along the second direction, and each of the phase-shifting cavities is respectively provided with a phase-shifting network; the working frequency bands of the phase-shifting networks in the phase-shifting cavities in the same group of phase-shifting cavities are different from each other.

[0011] The switching structure includes a combining network, one end of the feeder is connected with the combining network, and the phase-shifting networks in the phase-shifting cavities in the same group of phase-shifting cavities are respectively connected with the combining networks in the corresponding switching cavities.

[0012] In an embodiment, the switching structure further includes a switching member corresponding to the phase-shifting cavities, one end of the switching member is located in the switching cavity and connected with the combining network, and the other end of the switching member extends into the corresponding phase-shifting cavity and is connected with the phase-shifting network.

[0013] In an embodiment, the number of phase-shifting cavities in each group of phase-shifting cavities is one.

[0014] In an embodiment, the base station antenna device includes a column of radiating element columns or a plurality of columns of radiating element columns arranged along the second direction; each column of radiating element columns includes a plurality of radiating elements arranged along a third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction; the number of cavity structures is the same as the number of columns of radiating element columns, and the cavity structure corresponds to the radiating element column one by one.

[0015] Each of the switching cavities is provided with a plurality of switching structures arranged along the third direction; the plurality of switching structures in each of the switching cavities correspond to the plurality of radiating elements in the corresponding radiating element column one by one.

[0016] In an embodiment, one end of the avoiding cavity close to the reflecting plate has an opening; the balun extends into the avoiding cavity through the opening.

[0017] In an embodiment, the balun abuts against the bottom of the avoiding cavity.

[0018] In an embodiment, at the connection between the adapter structure and the phase shift network, the adapter structure and one of the phase shift networks are provided with a clamping slot, and the other one is positioned in cooperation with the clamping slot.

[0019] In an embodiment, the base station antenna device further comprises a connecting assembly, the connecting assembly comprises a connecting part and a fastening part, the connecting part is fixed to the outer wall of the balun and located on the side of the reflector plate away from the cavity structure; the cavity wall of the cavity structure near one end of the reflector plate is provided with a threaded hole;

[0020] The fastening part comprises a rod part and a head part connected with the rod part; the end of the rod part away from the head part sequentially passes through the connecting part, the reflector plate and is threadedly matched with the threaded hole, so that the head part abuts against the side of the connecting part away from the reflector plate.

[0021] In an embodiment, a first virtual axis along the first direction is defined, a second virtual axis along a third direction is defined, the first virtual axis and the second virtual axis intersect to divide four quadrants, and four of the radiation arms are located in the four quadrants one by one; wherein the third direction is perpendicular to the first direction and perpendicular to the second direction;

[0022] The side of the two adjacent radiation arms along the third direction close to each other is respectively provided with an avoidance groove opposite to each other, and the two avoidance grooves opposite to each other enclose an avoidance hole; the avoidance hole is provided one by one with the fastening part; the projection range of the fastening part located in the corresponding avoidance hole on the reflector plate.

[0023] In an embodiment, the radiation arm is provided with a hollow region penetrating along the first direction; the projection range of the fastening part located in the corresponding hollow region on the reflector plate.

[0024] A base station comprising a radome and the base station antenna device of any one of the above embodiments, the radome is connected with the reflector plate and covers the outside of the radiation unit.

[0025] The base station antenna device and the base station above are provided with an avoidance cavity between the two phase shift cavity groups, and the end of the balun away from the radiation arm can pass through the reflector plate and extend into the avoidance cavity. One end of the feed part passes through the cavity bottom of the corresponding balun and avoidance cavity and extends into the corresponding adapter cavity to be connected with the corresponding adapter structure. The adapter structure extends into the corresponding phase shift cavity group to be connected with the corresponding phase shift network, so that the feed part is indirectly connected with the corresponding phase shift network through the corresponding adapter structure.

[0026] When the base station antenna device is maintained, if the electrical connection between the feeders and the corresponding phase shift networks needs to be released, only the electrical connection between the feeders and the corresponding switching structures needs to be released. Since the connection positions of the feeders and the switching structures are located in the corresponding switching cavities, when the electrical connection between the connection positions of the feeders and the switching structures in the switching cavities is released (i.e., when the electrical connection between the feeders and the phase shift networks is released), 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 in the other layer of cavities. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 Structure diagram of the base station antenna device of an embodiment.

[0028] Figure 2 Structure diagram of the base station antenna device of an embodiment. Figure 1

[0029] Figure 3 Front view of the base station antenna device of an embodiment. Figure 1

[0030] Structure diagram of the switching member in the base station antenna device of an embodiment. Figure 4 Figure 3 Structure diagram of the base station antenna device of another embodiment.

[0031] Figure 5 Structure diagram of the base station antenna device of another embodiment.

[0032] Figure 6 Figure 5 Structure diagram of the base station antenna device of another embodiment.

[0033] Figure 7 Front view of the base station antenna device of another embodiment. Figure 5

[0034] Structure diagram of the connection between the two feeders and the four phase shift networks in the base station antenna device of another embodiment. Figure 8 Figure 5 Structure diagram of the base station antenna device of an embodiment.

[0035] Figure 9 Structure diagram of the connection between the radiating arm, the balun and the connecting part of an embodiment.

[0036] Figure 10 Top view of the base station antenna device of an embodiment.

[0037] Figure 11 Figure 10 Structure diagram of the connection between the radiating arm, the balun and the connecting part of another embodiment.

[0038] Figure 12 Structure diagram of the connection between the radiating arm, the balun and the connecting part of another embodiment.

[0039] Figure 13 Structure diagram of the connection between the radiating arm, the balun and the connecting part of another embodiment.​​​​​Figure 12 Top view.

[0040] Figure 14 This is a schematic diagram of a cavity structure according to one embodiment.

[0041] Figure 15 This is an exploded view of the connection between the first signal line, the second signal line, and the adapter in one embodiment.

[0042] Figure 16 This is an exploded view of the connection between the first signal line, the second signal line, and the adapter, according to another embodiment.

[0043] Figure 17 This is an exploded view of the connection between the first signal line, the second signal line, and the adapter in another embodiment.

[0044] Figure 18 This is an exploded view of the connection between the first signal line, the second signal line, and the adapter in another embodiment.

[0045] Explanation of reference numerals in the attached figures:

[0046] ZZ' is the first direction; XX' is the second direction; YY' is the third direction;

[0047] 100. Reflector; 101. Second connecting hole;

[0048] 200a, Radiation unit row; 200, Radiation unit; 210, Radiation arm; 210a, First radiation arm; 211a, First clearance groove; 210b, Second radiation arm; 211b, Second clearance groove; 211, Clearance hole; 212, Hollowed-out area; 220, Balun; 220a, First balun; 220b, Second balun; 230, Power supply component; 230a, First power supply component; 230b, Second power supply component; 240, Loading plate;

[0049] 300. Cavity structure; 301a. First phase-shifting cavity group; 301b. Second phase-shifting cavity group; 301. Phase-shifting cavity; 310. Phase-shifting network; 302. Avoidance cavity; 3021. Third opening; 303a. First transfer cavity; 303b. Second transfer cavity; 3031. First opening; 3032. Second opening; 320. Transfer structure; 321. Combining network; 322. Transfer component; 323. First transfer section; 3231. First slot; 324. Second transfer section; 3241. Second slot; 330. Partition wall;

[0050] 400. Connecting component; 410. Connecting part; 411. First connecting hole; 420. Fastening part;

[0051] 611, first signal line; 6111, first main section; 6112, first bending section; 6112a, first bending subsection; 6112b, second bending subsection;

[0052] 621, second signal line; 6211, second main section; 6212, second bending section; 6212a, third bending subsection; 6212b, fourth bending subsection;

[0053] 601, first positioning groove; 602, second positioning groove; 631, positioning boss; 632, limiting boss. DETAILED DESCRIPTION

[0054] 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, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described and it is therefore contemplated to cover all such modifications as fall within the scope of the application. It is to be understood that the specific embodiments of the present application are shown by way of illustration and not as limitations.

[0055] In the description of the present application, it needs to be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, 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 present application and simplifying the description, and therefore cannot be understood as indicating or implying 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 limiting the present application.

[0056] In addition, if the terms "first", "second" appear, 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 referred to. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0057] In the present application, unless specifically defined otherwise, if there is an appearance of the terms "installation", "connection", "connection", "fixation" and the like, these terms should be broadly interpreted. 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, or it can be the internal communication or interaction relationship of two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0058] In the present application, unless specifically defined otherwise, if there is a similar description of the first feature "on" or "under" the second feature, it means 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" the second feature can be 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 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.

[0059] It should be noted that if an element is referred to as "fixed to" or "provided to" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and are not the only embodiment.

[0060] Please refer to Figures 1 to 3 An embodiment of the present application provides a base station antenna device, which comprises a reflecting plate 100, a radiation unit 200 and a cavity structure 300.

[0061] The radiation unit 200 is a dual-polarized radiation unit, which comprises two pairs of radiation arms 210 of orthogonal polarization, two baluns 220 and two feeders 230. One end of the balun 220 is connected with the radiation arm 210, and the two feeders 230 are correspondingly arranged in the two baluns 220. The balun 220 is fixedly connected with the reflecting plate 100, so that the radiation unit 200 is fixedly connected with the reflecting plate 100 as a whole. 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.

[0062] The cavity structure 300 is located on both sides of the reflector plate 100 along the first direction ZZ' which is along the thickness direction of the reflector plate 100, respectively. The cavity structure 300 is fixedly connected with the reflector plate 100. The cavity structure 300 includes two layers of cavities separated along the first direction ZZ'. The two layers of cavities have a separation wall between them, which is a cavity wall shared by the two layers of cavities. The two layers of cavities are separated by the separation wall.

[0063] Among the two layers of cavities, one of the layers of cavities is provided with two groups of phase shift cavities arranged along the second direction XX' and a bypass cavity 302 located between the two groups of phase shift cavities, the second direction XX' being perpendicular to the first direction ZZ'. The two groups of phase shift cavities are defined as a first group of phase shift cavities and a second group of phase shift cavities, respectively. Each group of phase shift cavities has at least one phase shift cavity 301. The number of phase shift cavities 301 in the two groups of phase shift cavities is the same. Each group of phase shift cavities is provided with a phase shift network 310, specifically, each phase shift cavity 301 is provided with a phase shift network 310, respectively.

[0064] Among the two layers of cavities, the other layer of cavities is provided with two relay cavities separated along the second direction XX'. The relay cavities are located on the side of the phase shift cavity groups away from the reflector plate 100. The two relay cavities are respectively provided with a relay structure 320. The two relay cavities are respectively 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.

[0065] The end of the balun 220 away from the radiation arm 210 penetrates the reflector plate 100 and extends into the bypass cavity 302. The ends of the two feeders 230 correspondingly penetrate the two relay cavities, and the end of the feeder 230 is connected with the relay structure 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 phase shift cavity group and is connected with the phase shift network 310.

[0066] Specifically, the end of the first feeder 230a penetrates the cavity bottom of the first balun 220a and the bypass cavity 302, and then extends into the first relay cavity 303a and is connected with the first relay structure 320a. The first relay structure 320a extends into the phase shift cavity 301 of the first phase shift cavity group and is connected with the phase shift network 310 in the phase shift cavity 301 of the first phase shift cavity group. In this way, the first feeder 230a is indirectly connected with the phase shift network 310 in the first phase shift cavity group through the first relay structure 320a.

[0067] The second feeding member 230b passes through the second balun 220b and the cavity bottom of the avoidance cavity 302, and then extends into the second adapter cavity 303b, and is connected with the second adapter structure 320b. The second adapter structure 320b extends into the phase shift cavity 301 of the second phase shift cavity group, and is connected with the phase shift network 310 in the phase shift cavity 301 of the second phase shift cavity group. In this way, the second feeding member 230b is indirectly connected with the phase shift network 310 in the second phase shift cavity group through the second adapter structure 320a.

[0068] The base station antenna device described above is provided with the avoidance cavity 302 between the two phase shift cavity groups, and the balun 220 extends to the avoidance cavity 302 away from the end of the radiation arm 210. The end of the feeding member 230 passes through the corresponding balun 220 and the cavity bottom of the avoidance cavity 302, and extends into the corresponding adapter cavity, and is connected with the corresponding adapter structure 320. The adapter structure 320 extends into the corresponding phase shift cavity group and is connected with the corresponding phase shift network 310, so that the feeding member 230 is indirectly connected with the corresponding phase shift network 310 through the corresponding adapter structure 320.

[0069] When the base station antenna device described above is maintained, if the electrical connection between the feeding member 230 and the corresponding phase shift network 310 needs to be removed, only the electrical connection between the feeding member 230 and the corresponding adapter structure 320 needs to be removed. Since the connection position of the feeding member 230 and the adapter structure 320 is located in the corresponding adapter cavity, when the electrical connection between the connection position of the feeding member 230 and the adapter structure 320 in the adapter cavity is removed (that is, when the electrical connection between the feeding member 230 and the phase shift network 310 is removed), the operation position is located in the adapter cavity in one of the two cavity layers, so that the welding reliability of other welding points in the phase shift cavity 301 in the other cavity layer is not affected.

[0070] In some technical solutions, the phase shift network can be connected with the phase shift cavity through the grounding conductor. 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.

[0071] Further, since the balun 220 extends into the avoidance cavity 302, and the corresponding feeding member 230 passes through the balun 220 and the cavity bottom of the avoidance cavity 302, the inner cavity of the balun 220 simultaneously forms a resonance cavity in the avoidance cavity 302, 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.

[0072] In the embodiments of the present application, the phase shift cavity groups are defined, and the cavity structure 300 includes two groups of phase shift cavity groups arranged along the second direction XX'. The reason why it is called phase shift cavity group is that each group of phase shift cavity groups 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 cavity groups can have one phase shift cavity, or more than two phase shift cavities. Each phase shift cavity is used to set a phase shift network.

[0073] Please refer to Figures 1 to 3 In some embodiments, the radiation unit 200 further includes 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.

[0074] Optionally, the radiation unit further includes 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.

[0075] 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. Each phase shift cavity 301 is provided with a phase shift network 310. 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.

[0076] In some embodiments, at the connection between the adapter structure 320 and the corresponding phase shift network 310, one of the adapter structure 320 and the phase shift network 310 is provided with a clamping groove, and the other is positioned and matched with the clamping groove.

[0077] Please refer to Figure 4 The adapter structure 320 includes a first adapter section 323 and a second adapter section 324. One end of the first adapter section 323 is connected to one end of the second adapter section 324. The extension direction of the first adapter section 323 is along the first direction ZZ', and the end of the first adapter section 323 away from the second adapter section 324 extends into the corresponding phase shift cavity 301 and is connected with the corresponding phase shift network 310. The end of the feed 230 extending into the adapter cavity is connected to the end of the second adapter section 324 of the corresponding adapter structure 320 away from the first adapter section 323.

[0078] Optionally, the end of the first adapter section 323 away from the second adapter section 324 is provided with a first clamping groove 3231, and the phase shift network 310 is positioned and matched with the first clamping groove 3231, thereby facilitating the welding and fixation of the phase shift network 310 and the first adapter section 323.

[0079] Optionally, the second adapter section 324 is provided with a second clamping groove 3232 at one end away from the first adapter section 323, and the feeding member 230 is positioned and matched with the second clamping groove 3232, so as to facilitate the welding and fixing of the feeding member 230 and the second adapter section 324.

[0080] Please refer to Figures 5 to 7 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', and each phase shift cavity 301 is respectively provided with a phase shift network 310. 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.

[0081] The adapter structure 320 comprises a combining network 321. One end of the feeding member 230 is connected with the combining network 321, and 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.

[0082] 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 feeding member 230 through the corresponding combining network 321, and thus the combining of the phase shift networks 310 with different working frequency bands can be realized.

[0083] Specifically in Figures 5 to 7 In the illustrated embodiments, each group of phase shift cavity groups comprises two phase shift cavities 301, and 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. Referring again to Figure 8 The phase shift networks 310 in the two phase shift cavities 301 in the first group of phase shift cavity groups are respectively a first phase shift network 310a and a third phase shift network 310c. The working frequency bands of the first phase shift network 310a and the second phase shift network 310c are different, and the two are respectively electrically connected with the combining network 321 in the first adapter structure 320a.

[0084] The phase shift networks 310 in the two phase shift cavities 301 in the second group of phase shift cavity groups are respectively a second phase shift network 310b and a fourth phase shift network 310d. The working frequency bands of the second phase shift network 310b and the fourth phase shift network 310d are different, and the two are respectively electrically connected with the combining network 321 in the second adapter structure 320b.

[0085] In other embodiments, each group of phase-shifted cavity groups can also include three or more phase-shifted cavities, and the operating frequency bands of the phase-shift networks in each phase-shifted cavity in the same group of phase-shifted cavity groups are different from each other.

[0086] Reference Figure 8 In some embodiments, the adapter structure 320 further includes an adapter 322 corresponding to the phase-shifted cavity 301. One end of the adapter 322 is located in the adapter cavity and connected with the combining network 321, and the other end of the adapter 322 extends into the corresponding phase-shifted cavity 301 and is connected with the phase-shift network 310.

[0087] Specifically, the number of adapters 322 in each adapter structure 320 is the same as the number of phase-shifted cavities 301 in the corresponding group of phase-shifted cavities, so that the plurality of adapters 322 in each adapter structure 320 can be connected with the phase-shift networks 310 in the plurality of phase-shifted cavities 301 one by one, thereby facilitating the connection of the phase-shift networks 310 in the plurality of phase-shifted cavities 301 in the same group of phase-shifted cavity groups with the combining network 321 in the corresponding adapter cavity, respectively.

[0088] In Figure 8 In the embodiment shown, each adapter structure 320 includes two adapters 322, and the two phase-shift networks 310 in the two phase-shifted cavities 301 in the same group of phase-shifted cavities are connected with the combining network 321 in the corresponding adapter cavity through the two adapters 322, respectively.

[0089] In some embodiments, at the connection between the adapter 322 and the corresponding phase-shift network 310, one of the adapter 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 adapter 322 extending into the phase-shifted cavity 301 can be provided with a clamping slot, and the phase-shift network 310 is matched with the clamping slot on the adapter 322, thereby facilitating the soldering and fixing of the phase-shift network 310 and the adapter 322.

[0090] Reference Figure 9 In 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 at intervals along the second direction XX'.

[0091] Each column of radiating element columns 200a includes a plurality of radiating elements 200 arranged in sequence along a third direction YY'. 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 structure 300 corresponds to the radiating element column 200a one by one. The length direction of the cavity structure 300 corresponds to the column direction of the corresponding radiating element column 200a.

[0092] Each of the relay cavities is provided with a plurality of relay structures 320 arranged in the third direction YY' in sequence. The plurality of relay structures 320 in each of the relay cavities correspond to the plurality of radiating elements 200 in the corresponding column of radiating elements 200a in a one-to-one manner. The feed 230 in the radiating element 200 enters the relay cavity through the cavity bottom of the avoidance cavity 302 and is connected to the corresponding relay structure 320.

[0093] Specifically, the first relay cavity 303a is provided with a plurality of first relay structures 320a arranged in the third direction YY' in sequence, which correspond to the plurality of radiating elements 200 in the corresponding column of radiating elements 200a in a one-to-one manner. The second relay cavity 303b is provided with a plurality of second relay structures 320b arranged in the third direction YY' in sequence, which correspond to the plurality of radiating elements 200 in the corresponding column of radiating elements 200a in a one-to-one manner. The first feed 230a in each of the radiating elements 200 enters the first relay cavity 303a through the cavity bottom of the avoidance cavity 302 and is connected to the corresponding first relay structure 320a. The second feed 230b in each of the radiating elements 200 enters the second relay cavity 303b through the cavity bottom of the avoidance cavity 302 and is connected to the corresponding second relay structure 320b.

[0094] Optionally, the connection between the feed 230 and the corresponding relay structure 320 is by welding. Therefore, the feed 230 and the relay structure 320 can be welded or unwelded in the relay cavity. Since the connection position between the feed 230 and the relay structure 320 is located in the corresponding relay cavity, all the relay structures 320 and the corresponding feeds 230 in the same relay cavity can be unwelded at the same time, and the welding reliability of other welding points in the phase-shifting cavity 301 is not affected during unwelding, so that all the relay structures 320 and the corresponding feeds 230 in the same relay cavity can be quickly electrically disconnected, improving the maintenance efficiency.

[0095] Please refer to Figures 1 to 3 , Figures 5 to 7 In some embodiments, the two relay cavities are respectively provided with an opening on the side facing away from each other in the second direction XX'. In this way, the plurality of relay structures 320 arranged in the third direction YY' can enter or exit the corresponding relay cavity through the corresponding opening, facilitating assembly or disassembly. Moreover, when connecting or disconnecting the relay structure 320 and the corresponding feed 230, the relay cavity can be accessed through the corresponding opening for operation, thereby facilitating operation.

[0096] Specifically, the first adapter cavity 303a has a first opening 3031 on the side facing away from the second adapter cavity 303b, and the second adapter cavity 303b has a second opening 3032 on the side facing away from the first adapter cavity 303a. In this way, the plurality of first adapter structures 320a arranged along the third direction YY' can be put into or taken out of 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 taken out of the second adapter cavity 303b from the second opening 3032, thereby facilitating assembly or disassembly.

[0097] Moreover, when performing the operation of connecting or disconnecting the first adapter structure 320a and the corresponding first feeding member 230a, the first adapter cavity 303a can be accessed through the first opening 3031 for operation, thereby facilitating operation. Similarly, when performing the operation of connecting or disconnecting the second adapter structure 320b and the corresponding second feeding member 230b, the second adapter cavity 303b can be accessed through the second opening 3032 for operation, thereby facilitating operation.

[0098] Please refer to Figure 6 In some embodiments, the avoidance cavity 302 has a third opening 3021 on the 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.

[0099] 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.

[0100] Please refer to Figures 1 to 3 In an embodiment, the base station antenna device further includes a connecting assembly 400. 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 located on the side of the reflector plate 100 facing away from the cavity structure 300. The fastening portion 420 is sequentially arranged in the connecting portion 410, the reflector plate 100, and the cavity wall of the cavity structure 300, so as to fixedly connect the connecting portion 410, the reflector plate 100, and the cavity wall of the cavity structure 300.

[0101] By arranging the connecting portion 410 on the outer wall of the balun 220, the connecting portion 410 and the cavity structure 300 are respectively arranged on two sides of the reflector plate 100, so that the three can be fixed by sequentially penetrating the connecting portion 410, the reflector plate 100 and the cavity wall of the cavity structure 300 through the fastening portion 420, that is, the radiation unit 200, the reflector plate 100 and the cavity structure 300 are fixed. In this way, the radiation unit 200 and the cavity structure 300 for accommodating the phase shift network 310 can be fixed with the reflector plate 100 at the same time through one operation, saving the assembly process. Moreover, since the radiation unit 200 and the cavity structure 300 can share the fastening portion 420 with the reflector plate 100 for fixation, the number of fastening portions 420 is saved.

[0102] Reference Figure 10 The connecting portion 410 is provided with a first connecting hole 411. Reference Figure 2 The reflector plate 100 is provided with a second connecting hole 101. The cavity wall of the cavity structure 300 close to one end of the reflector plate 100 is provided with a third connecting hole. The fastening portion 420 is sequentially penetrated into the first connecting hole 411, the second connecting hole 101 and the third connecting hole, so as to fix the connecting portion 410, the reflector plate 100 and the cavity wall of the cavity structure 300.

[0103] In some embodiments, the cavity wall of the cavity structure 300 close to one end of the reflector plate 100 is provided with a threaded hole (i.e. the third connecting hole). The fastening portion 420 includes a rod portion and a head portion, and the head portion is connected with one end of the rod portion. The end of the rod portion away from the head portion is sequentially penetrated through the connecting portion, the reflector plate 100 and is threadedly connected with the threaded hole.

[0104] Specifically, the end of the rod portion away from the head portion can be sequentially penetrated through the first connecting hole 411 and the second connecting hole 101. The third connecting hole is a threaded hole, so that the rod portion is screwed into the third connecting hole until the head portion abuts against the side of the connecting portion 410 away from the reflector plate 100, and then the connecting portion 410, the reflector plate 100 and the cavity wall of the cavity structure 300 can be fixed.

[0105] Wherein, the connecting portion 410 abuts against the reflector plate 100, and the cavity structure 300 abuts against the reflector plate 100, which is beneficial to reliable fixation of the connecting portion 410, the reflector plate 100 and the cavity wall of the cavity structure 300.

[0106] Specifically, the fastening portion 420 can be a bolt, and the rod portion is a screw rod.

[0107] In some embodiments, the connecting portion 410 and the balun 220 are an integral structure, which can be formed at the same time when the balun 220 is processed, facilitating processing and reliable connection between the connecting portion 410 and the balun 220.

[0108] Please refer to Figure 10 and Figure 11In 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] It can be understood that when the fastening part 420 is a bolt, the operation tool can be a screwdriver.

[0114] Please refer to Figure 10 and Figure 11In some embodiments, the number of the connection assemblies 400 is two groups, and the two groups of the connection assemblies 400 are arranged along the second direction XX'. The connection 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 connection assemblies 400 are respectively located on the sides of the two baluns 220 away from each other along the second direction XX'.

[0115] Among the two groups of the connection assemblies 400, one group of the connection 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 connection 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 connection assemblies 400 can be arranged in the present embodiment, so that the connection among the radiating unit 200, the reflector plate 100, and the cavity structure 300 is reliable.

[0116] Please refer to Figure 12 and Figure 13 In other embodiments, the radiating arm 210 is provided with a hollow region 212 penetrating along the first direction ZZ'. The fastening part 420 is located within the projection range of the contour of the corresponding hollow region 212 on the reflector plate 100.

[0117] Since the fastening part 420 is located within the projection range of the contour 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, and the fastening part 420 can be conveniently passed through the connection part 410, the reflector plate 100, and the cavity wall of the cavity structure 300.

[0118] In the present embodiment, the fastening part 420 is arranged within the projection range of the contour of the corresponding hollow region 212, so that the fastening part 420 can be operated by means of the hollow region 212 on the radiating arm 210 itself, without the need to specially open an avoiding hole 211.

[0119] Please refer to Figure 12 and Figure 13 In some embodiments, the number of the connection assemblies 400 is two groups, and the number of the connection assemblies 400 is two groups. The connection assemblies 400 are connected with the baluns 220 in a one-to-one correspondence. The arrangement direction of the two groups of the connection assemblies 400 is perpendicular to the first direction ZZ', and the arrangement direction of the two groups of the connection assemblies 400 has an included angle with the second direction XX'. The two baluns 220 are arranged along the second direction XX'.

[0120] Two groups of the connecting assemblies 400 are connected with the first balun 220a and the second balun 220b respectively. By arranging the two groups of the connecting assemblies 400 at an angle with respect to the second direction XX', the fastening portions 420 of the two groups of the connecting assemblies 400 are respectively located in the hollowed regions 212 of the two different radiating arms 210. In this embodiment, two groups of the connecting assemblies 400 are arranged to ensure reliable connection of the radiating unit 200, the reflector 100 and the cavity structure 300.

[0121] Optionally, the angle between the arrangement direction of the two groups of the connecting assemblies 400 and the second direction XX' is 45°. In this way, the first connecting hole 411 and the fastening portion 420 are located as close as possible to the center of the projection range of the outline of the corresponding hollowed region 212, facilitating operation.

[0122] Optionally, the two groups of the connecting assemblies 400 are arranged corresponding to the positions of the two radiating arms 210 in the first quadrant and the third quadrant, i.e., the fastening portions 420 of the two groups of the connecting assemblies 400 correspond to the hollowed regions 212 of the two radiating arms 210 in the first quadrant and the third quadrant respectively.

[0123] The connection portion 410 is inclined to the orientation of the end of the corresponding balun 220. Optionally, the inclination angle of the connection portion 410 to the orientation of the end of the corresponding balun 220 is 45° with respect to the second direction XX'. In this way, the first connecting hole 411 and the fastening portion 420 are located as close as possible to the center of the corresponding hollowed region 212, facilitating operation.

[0124] In another embodiment, the number of the connecting assemblies 400 can also be four. Two groups of the connecting assemblies 400 are connected with the first balun 220a and the other two groups of the connecting assemblies 400 are connected with the second balun 220b. The four groups of the connecting assemblies 400 have four fastening portions 420 in total. The four fastening portions 420 correspond to the hollowed regions 212 of the four radiating arms 210 one by one, so that the four fastening portions 420 can be operated through the four hollowed regions 212 respectively.

[0125] In an embodiment, the cavity structure 300 is divided into two cavity modules arranged along the second direction XX', i.e., a first cavity module and a second cavity module. Each cavity module includes a group of switching cavities and phase-shifting cavities arranged 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] Optionally, the combining network 321 adopts a sheet metal network. The phase shift network 310 adopts a sheet metal network.

[0130] Optionally, the first signal line 611 adopts a sheet metal strip line. The second signal line 621 adopts a sheet metal strip line.

[0131] 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.

[0132] 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 612 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.

[0133] 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.

[0134] 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.

[0135] 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'.

[0136] 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.

[0137] The extending direction of the second body section 6211 can be along the width direction of the phase-shifting cavity 301, i.e., the first direction ZZ'. By bending the second bending section 6212 relative to the second body section 6211 so that the second bending section 6212 is parallel to the partition wall 330, the adapter 322 is facilitated to be connected with the second bending section 6212, i.e., the adapter 322 is facilitated to be connected with the second signal line 621.

[0138] The adapter 322 extends along the first direction ZZ' through the partition wall 330. Since the second bending section 6212 is parallel to the partition wall, the second bending section 6212 is perpendicular to the extending direction of the adapter 322, thereby facilitating the connection between the second bending section 6212 and the adapter 322.

[0139] Figures 15 to 18 Connection structure exploded views 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 are given for four different embodiments.

[0140] The embodiments 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 embodiments shown in Figure 16 or Figure 18 .

[0141] The embodiments 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 embodiments shown in Figure 15 or Figure 17 .

[0142] The embodiments 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 embodiments shown in Figure 16 or Figure 18 .

[0143] The embodiments 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 embodiments shown in Figure 15 or Figure 17 .

[0144] 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.

[0145] Specifically inFigure 15 In the illustrated embodiment, 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 the 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 the positioning boss 631, which protrudes along the second direction XX'. The positioning boss 631 cooperates with the first positioning groove 601.

[0146] In Figure 16 In the illustrated embodiment, 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 the first positioning groove 601. The first connecting end of the adapter 322 is provided with the positioning boss 631, which protrudes along the first direction ZZ'. The positioning boss 631 cooperates with the first positioning groove 601.

[0147] In Figure 17 In the illustrated embodiment, 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 the first positioning groove 601. The first connecting end of the adapter 322 cooperates with the first positioning groove 601.

[0148] 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.

[0149] Please refer to 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.

[0150] 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.

[0151] Please refer to 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.

[0152] 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'.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] 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, radiating unit and cavity structure; The radiation unit includes two pairs of orthogonally polarized radiation arms, two baluns, and two feeders. One end of each balun is connected to a radiation arm, and the two feeders are correspondingly inserted into the two baluns. The baluns are fixedly connected to the reflector. The cavity structure and the radiation arm are respectively located on both sides of the reflector along the first direction, and the cavity structure is fixedly connected to the reflector; the cavity structure includes two cavities separated along the first direction, and a partition wall is provided between the two cavities; one cavity has two sets of phase-shifting cavity groups arranged along the second direction and a clearance cavity located between the two sets of phase-shifting cavity groups, the second direction being perpendicular to the first direction, and phase-shifting networks are respectively provided in the two sets of phase-shifting cavity groups; the other cavity has two transition cavities separated along the second direction, and transition structures are respectively provided in the two transition cavities, and the two transition cavities have openings on the sides opposite to each other along the second direction; 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 the two transition cavities in a corresponding manner. One end of each power supply component passes through the corresponding balun and the clearance cavity and then extends into the corresponding transition cavity, connecting with the corresponding transition structure. The inner cavity of the balun forms a resonant cavity within the evacuation cavity; 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.

2. The base station antenna device according to claim 1, characterized in that, 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 within the same group of phase-shifting cavities are different; The switching structure includes a combining network, one end of the power supply component is connected to the combining network, and the phase shifting network in each phase shifting cavity of the same group of phase shifting cavities is connected to the combining network in the corresponding switching cavity.

3. The base station antenna device according to claim 2, characterized in that, 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.

4. The base station antenna device according to claim 1, characterized in that, The number of phase-shifting cavities in each group of phase-shifting cavities is one.

5. The base station antenna device according to claim 1, characterized in that, The base station antenna device includes one or more columns of radiating elements arranged at intervals along the second direction; each column of the radiating elements includes a plurality of radiating elements arranged sequentially along a third direction, the third direction being perpendicular to both the first direction and the second direction; the number of cavity structures is the same as the number of columns of the radiating elements, and the cavity structures correspond one-to-one with the columns of the radiating elements; Each of the aforementioned transition cavities is provided with a plurality of the aforementioned transition structures arranged sequentially along the third direction; Each of the multiple transition structures within the transition cavity corresponds one-to-one with a multiple of the radiation units in the corresponding radiation unit column.

6. The base station antenna device according to claim 1, characterized in that, The cavity has an opening at one end near the reflector; the balun extends into the cavity through the opening.

7. The base station antenna device according to claim 1, characterized in that, The balun abuts against the bottom of the cavity of the avoidance chamber.

8. The base station antenna device according to claim 1, characterized in that, At the connection between the adapter structure and the phase shifting network, one of the adapter structure and the phase shifting network is provided with a slot, and the other is positioned and engaged with the slot.

9. The base station antenna device according to claim 1, characterized in that, The base station antenna device further includes a connecting component, which 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 cavity wall of the cavity structure 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.

10. The base station antenna device according to claim 9, 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.

11. The base station antenna device according to claim 9, 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.

12. A base station, characterized in that, The device includes an antenna radome and a base station antenna device according to any one of claims 1-11, wherein the antenna radome is connected to the reflector and covers the outside of the radiating element.

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