Base station antenna apparatus and base station

Abstract

The present application relates to a base station antenna apparatus and a base station. The base station antenna apparatus comprises a reflector, a radiation unit, and a cavity structure. The radiation unit comprises two pairs of orthogonally polarized radiating arms, two baluns, and two feeding members. The cavity structure comprises two layers of cavities separated along a first direction. One layer of the cavities is provided with two phase-shifting cavity groups arranged along a second direction and a clearance cavity located between the two phase-shifting cavity groups. The other layer of cavities is provided with two adapter cavities separated in the second direction. One end of each of the two feeding members passes through a corresponding one of the two adapter cavities and is connected to an adapter structure. The adapter structure within the adapter cavity extends into a corresponding phase-shifting cavity group and is connected to a phase-shifting network. When an operation to disconnect the electrical connection at a connection location between the feeding member and the adapter structure within an adapter cavity is performed, the operation is carried out within the adapter cavity in one of the two layers of cavities, such that the reliability of soldering at other solder joints in the phase-shifting cavities in the other layer of cavities is not affected.

Description

Base station antenna device, base station

[0001] Cross-references

[0002] This application incorporates Chinese Patent Application No. 2024115687585, filed on November 5, 2024, entitled “Base Station Antenna Apparatus, Base Station”, which is incorporated herein by reference in its entirety. Technical Field

[0003] This application relates to the field of communication technology, and in particular to base station antenna devices and base stations. Background Technology

[0004] Base station antenna devices generally include reflectors, phase shifters, and radiating elements. In related technologies, the radiating elements are mounted on one side of the reflector, and the phase shifter is mounted on the side of the reflector facing away from the radiating elements. The phase shifter includes a phase-shifting cavity and a phase-shifting network located within the phase-shifting cavity. The radiating element includes a radiating arm, a balun, and a feed element. One end of the balun is connected to the radiating arm, and the other end is connected to the reflector. The feed element passes through the balun. The end of the feed element away from the radiating arm passes through the reflector and extends into the phase-shifting cavity, where it is soldered to the phase-shifting network.

[0005] When maintaining base station antenna devices, it is sometimes necessary to desolder the power supply component and the phase shifting network to disconnect their electrical connection. However, desoldering the power supply component and the phase shifting network can easily affect the welding reliability of other solder joints within the phase shifting cavity. Summary of the Invention

[0006] Based on this, this application provides a base station antenna device and a base station.

[0007] In a first aspect, this application provides a base station antenna device, including: a reflector, a radiating element, and a cavity structure;

[0008] 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.

[0009] 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, wherein 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 each of the two sets of phase-shifting cavity groups is provided with a phase-shifting network; the other cavity has two transition cavities separated along the second direction, and each of the two transition cavities is provided with a transition structure;

[0010] 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.

[0011] In some embodiments, the two transition cavities each have an opening on one side that is opposite to each other along the second direction.

[0012] In some embodiments, each group of phase-shifting cavities includes a plurality of 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 of the same group of phase-shifting cavities are different from each other;

[0013] 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.

[0014] In some embodiments, the adapter structure further includes an adapter corresponding to the phase shifting cavity, one end of the adapter being located inside the adapter cavity and connected to the combining network, and the other end of the adapter extending into the corresponding phase shifting cavity and connected to the phase shifting network.

[0015] In some embodiments, the number of phase-shifting cavities in each group of phase-shifting cavities is one.

[0016] In some embodiments, 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;

[0017] Each of the transition cavities is provided with a plurality of transition structures arranged sequentially along the third direction; the plurality of transition structures in each of the transition cavities correspond one-to-one with the plurality of radiation units in the corresponding radiation unit column.

[0018] In some embodiments, the recessed cavity has an opening at one end near the reflector; the balun extends into the recessed cavity through the opening.

[0019] In some embodiments, the balun abuts against the bottom of the cavity.

[0020] In some embodiments, 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.

[0021] In some embodiments, the base station antenna device further includes a connection assembly, which includes a connection part and a fastening part. The connection 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 structure has a threaded hole on the cavity wall at the end near the reflector.

[0022] 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.

[0023] In some embodiments, 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 intersects the second virtual axis 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.

[0024] 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.

[0025] In some embodiments, the radiating arm has a hollowed-out area extending along the first direction; the fastening part is located within the projection range of the outline of the corresponding hollowed-out area on the reflector plate.

[0026] Secondly, this application provides a base station, including an antenna radome and a base station antenna device as described in any of the above embodiments, wherein the antenna radome is connected to the reflector and covers the outside of the radiating element.

[0027] The beneficial effects of the base station antenna device and base station according to the embodiments of this application are as follows: When maintaining the base station antenna device, if it is necessary to disconnect the electrical connection between the feeder and the corresponding phase-shifting network, it is only necessary to disconnect the electrical connection between the feeder and the corresponding adapter structure. Since the connection position between the feeder and the adapter structure is located in the corresponding adapter cavity, when disconnecting the electrical connection between the feeder and the adapter structure in the adapter cavity, the operation position is located in the adapter cavity of one of the two cavities, so as not to affect the welding reliability of other solder points in the phase-shifting cavity of the other cavity.

[0028] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments described below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0030] Figure 1 is a schematic diagram of the structure of a base station antenna device according to an embodiment.

[0031] Figure 2 is an exploded view of the structure in Figure 1.

[0032] Figure 3 is a front view of Figure 1.

[0033] Figure 4 is a schematic diagram of the adapter in Figure 3.

[0034] Figure 5 is a schematic diagram of the base station antenna device according to another embodiment.

[0035] Figure 6 is an exploded view of the structure in Figure 5.

[0036] Figure 7 is a front view of Figure 5.

[0037] Figure 8 is a schematic diagram of the connection structure of the two power supply components and four phase shifting networks in Figure 5.

[0038] Figure 9 is a schematic diagram of the structure of a base station antenna device according to an embodiment.

[0039] Figure 10 is a schematic diagram of the connection structure of the radiating arm, balun, and connecting part according to an embodiment.

[0040] Figure 11 is a top view of Figure 10.

[0041] Figure 12 is a schematic diagram of the connection structure of the radiating arm, balun, and connecting part in another embodiment.

[0042] Figure 13 is a top view of Figure 12.

[0043] Figure 14 is a schematic diagram of the cavity structure of one embodiment.

[0044] Figure 15 is an exploded view of the connection between the first signal line, the second signal line, and the adapter in one embodiment.

[0045] Figure 16 is an exploded view of the connection between the first signal line, the second signal line, and the adapter in another embodiment.

[0046] Figure 17 is an exploded view of the connection between the first signal line, the second signal line, and the adapter in another embodiment.

[0047] Figure 18 is an exploded view of the connection between the first signal line, the second signal line, and the adapter in another embodiment. ZZ' First direction; XX', Second direction; YY', Third direction; 100, Reflector; 101, Second connecting hole; 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, Feeding component; 230a, First feeding component; 230b, Second feeding component; 240, Loading piece; 300, Cavity structure; 301a, First phase-shifting cavity group; 301b, Second phase-shifting cavity group; 301, Phase-shifting cavity; 310, Phase-shifting network; 302. 3021, Third opening; 303a, First transition cavity; 303b, Second transition cavity; 3031, First opening; 3032, Second opening; 320, Transition structure; 321, Combining network; 322, Transition component; 323, First transition section; 3231, First slot; 324, Second transition section; 3241, Second slot; 330, Partition wall; 400, Connecting assembly; 410, Connecting part; 411, First connecting hole; 420, Fastening part; 611, First signal line; 6111, First main body section; 6112, First bending section; 6112a, First bending segment; 6112b, Second bending segment; 621, Second signal line; 6211, Second main body segment; 6212, Second bending segment; 6212a, Third bending segment; 6212b, Fourth bending segment; 601, First positioning groove; 602, Second positioning groove; 631, Positioning boss; 632, Limiting boss. Detailed Implementation

[0048] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0050] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0051] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0052] In some cases, for the sake of brevity and / or to aid in understanding the scope of this disclosure, a single embodiment may combine multiple features. It should be understood that in such cases, these multiple features may be provided individually (e.g., in different embodiments) or in any other suitable combination. Conversely, when different features are described in different embodiments, these different features may be combined to form a single embodiment unless otherwise stated or implied. This principle also applies to the claims, whose claims may be rearranged in any combination, i.e., any claim may be modified to include any feature defined in the other claims.

[0053] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0054] In this application, unless otherwise stated or implied, the phrase “at least one” followed by a list of items refers to any combination of the listed items, including individual members. Whether the expression is “at least one of a, b, or c” or “at least one of a, b, and c”, it is intended to cover: a, b, c, combinations of a and b, combinations of a and c, combinations of b and c, and combinations of a, b, and c.

[0055] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0056] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0057] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0058] When the base station antenna device and base station of the present application embodiment disconnect the electrical connection between the power supply component and the corresponding phase shifting network, the welding reliability of other solder joints in the phase shifting cavity will not be affected.

[0059] Referring to Figures 1 to 3, one embodiment of this application provides a base station antenna device, which includes: a reflector 100, a radiating element 200, and a cavity structure 300.

[0060] The radiating unit 200 is a dual-polarized radiating unit, comprising two pairs of orthogonally polarized radiating arms 210, two baluns 220, and two feeders 230. One end of each balun 220 is connected to a radiating arm 210, and the two feeders 230 are correspondingly inserted into the two baluns 220. The baluns 220 are fixedly connected to the reflector 100, thereby fixing the radiating unit 200 as a whole to the reflector 100. The two baluns 220 are designated as first balun 220a and second balun 220b. The two feeders 230 are designated as first feeder 230a and second feeder 230b.

[0061] The cavity structure 300 and the radiation arm 210 are located on opposite sides of the reflector 100 along a first direction ZZ', where ZZ' is along the thickness direction of the reflector 100. The cavity structure 300 is fixedly connected to the reflector 100. The cavity structure 300 includes two cavities separated along the first direction ZZ'. A partition wall is provided between the two cavities, and the partition wall is a shared cavity wall between the two cavities. The two cavities are separated by the partition wall.

[0062] In the two-layer cavity, one layer has two sets of phase-shifting cavity groups arranged along a second direction XX' and a clearance cavity 302 located between the two sets of phase-shifting cavity groups. The second direction XX' is perpendicular to the first direction ZZ'. The two sets of phase-shifting cavity groups are defined as the first phase-shifting cavity group and the second phase-shifting cavity group, respectively. Each set of phase-shifting cavity groups has at least one phase-shifting cavity 301. The number of phase-shifting cavities 301 in the two sets of phase-shifting cavity groups is the same. Each set of phase-shifting cavity groups is provided with a phase-shifting network 310. In some embodiments, each phase-shifting cavity 301 is provided with a phase-shifting network 310.

[0063] In the two-cavity structure, the other cavity has two transition cavities separated by a second direction XX'. The transition cavities are located on the side of the phase-shifting cavity assembly facing away from the reflector 100. Each of the two transition cavities contains a transition structure 320. The two transition cavities are designated as a first transition cavity 303a and a second transition cavity 303b. The transition structure 320 within the first transition cavity 303a is the first transition structure 320a. The transition structure 320 within the second transition cavity 303b is the second transition structure 320b.

[0064] The end of the balun 220 furthest from the radiating arm 210 passes through the reflector 100 and extends into the recess cavity 302. One end of each of the two feed elements 230 passes into one of the two transition cavities, and one end of each feed element 230 is connected to the transition structure 320. The two transition cavities correspond one-to-one with two sets of phase-shifting cavity groups. The transition structure 320 within each transition cavity extends into the corresponding phase-shifting cavity group and is connected to the phase-shifting network 310.

[0065] In some embodiments, one end of the first power supply element 230a passes through the bottom of the first balun 220a and the clearance cavity 302, extends into the first transition cavity 303a, and then connects to the first transition structure 320a. The first transition structure 320a extends into the phase shift cavity 301 of the first phase shift cavity group and connects to the phase shift network 310 within the phase shift cavity 301 of the first phase shift cavity group. Thus, the first power supply element 230a is indirectly connected to the phase shift network 310 within the first phase shift cavity group through the first transition structure 320a.

[0066] One end of the second power supply component 230b passes through the bottom of the second balun 220b and the clearance cavity 302, extends into the second transition cavity 303b, and then connects to the second transition structure 320b. The second transition structure 320b extends into the phase shift cavity 301 of the second phase shift cavity group and connects to the phase shift network 310 within the phase shift cavity 301. Thus, the second power supply component 230b is indirectly connected to the phase shift network 310 within the second phase shift cavity group through the second transition structure 320a.

[0067] In the aforementioned base station antenna device, a recess 302 is provided between the two phase-shifting cavity groups. The end of the balun 220 furthest from the radiating arm 210 can pass through the reflector 100 and extend into the recess 302. One end of the feed element 230 passes through the bottom of the corresponding balun 220 and the recess 302 and extends into the corresponding adapter cavity, connecting with the corresponding adapter structure 320. The adapter structure 320 extends into the corresponding phase-shifting cavity group and connects with the corresponding phase-shifting network 310, thereby allowing the feed element 230 to be indirectly connected to the corresponding phase-shifting network 310 through the corresponding adapter structure 320.

[0068] When maintaining the aforementioned base station antenna device, if it is necessary to disconnect the electrical connection between the feed component 230 and the corresponding phase-shifting network 310, it is only necessary to disconnect the electrical connection between the feed component 230 and the corresponding adapter structure 320. Since the connection position between the feed component 230 and the adapter structure 320 is located within the corresponding adapter cavity, when disconnecting the electrical connection between the feed component 230 and the adapter structure 320 within the adapter cavity (i.e., when disconnecting the electrical connection between the feed component 230 and the phase-shifting network 310), the operation position is located within the adapter cavity of one of the two cavities, thus not affecting the welding reliability of other solder joints within the phase-shifting cavity 301 of the other cavity.

[0069] In some technical solutions, the phase-shifting network can be grounded by connecting it to the phase-shifting cavity via a grounding conductor. Other solder joints within the phase-shifting cavity 301 include, for example, solder joints between the grounding conductor and the cavity wall of the phase-shifting cavity, and solder joints between the phase-shifting network and the grounding conductor. The types of these other solder joints are not listed exhaustively; please refer to existing technologies.

[0070] In some embodiments, since the balun 220 extends into the cavity 302, and the corresponding feed element 230 passes through the bottom of the balun 220 and the cavity 302, the inner cavity of the balun 220 simultaneously forms a resonant cavity within the cavity 302, which is beneficial to improving the filtering characteristics of the high-frequency radiation unit to the low-frequency radiation unit and improving the radiation efficiency of the base station antenna.

[0071] In this embodiment, a phase-shifting cavity group is defined, and the cavity structure 300 includes two groups of phase-shifting cavities arranged along the second direction XX'. It is called a phase-shifting cavity group because each group consists of at least one phase-shifting cavity. The two groups of phase-shifting cavities have the same number of phase-shifting cavities. In some embodiments, each group of phase-shifting cavities may have one phase-shifting cavity or more than two phase-shifting cavities. Each phase-shifting cavity is used to house a phase-shifting network.

[0072] Referring to Figures 1 to 3, in some embodiments, the radiation unit 200 further includes a loading plate 240. The loading plate 240 is located on the side of the radiation arm 210 facing away from the balun 220 and is spaced apart from the radiation arm 210.

[0073] In some embodiments, the radiation unit further includes a support (not shown), one end of which is connected to the side of the radiation arm 210 facing away from the balun 220, and the other end of which is connected to the loading plate 240, so that the loading plate 240 is spaced apart from the spaced radiation arm 210.

[0074] Referring to Figures 1 to 3, in some embodiments, each group of phase-shifting cavities contains one phase-shifting cavity 301. Each phase-shifting cavity 301 is provided with a phase-shifting network 310. The phase-shifting network 310 in the phase-shifting cavity 301 of the first group of phase-shifting cavities is a first phase-shifting network 310a. The phase-shifting network 310 in the phase-shifting cavity 301 of the second group of phase-shifting cavities is a second phase-shifting network 310b.

[0075] In some embodiments, at the connection between the adapter structure 320 and the corresponding phase shifting network 310, one of the adapter structure 320 and the phase shifting network 310 is provided with a slot, and the other is positioned and engaged with the slot.

[0076] Referring to Figure 4, the transition structure 320 includes a first transition segment 323 and a second transition segment 324. One end of the first transition segment 323 is connected to one end of the second transition segment 324. The first transition segment 323 extends along a first direction ZZ', and the end of the first transition segment 323 away from the second transition segment 324 extends into the corresponding phase-shifting cavity 301 and connects to the corresponding phase-shifting network 310. The end of the power supply component 230 extending into the transition cavity is connected to the end of the second transition segment 324 of the corresponding transition structure 320 away from the first transition segment 323.

[0077] In some embodiments, the first adapter segment 323 is provided with a first slot 3231 at the end away from the second adapter segment 324, and the phase shifting network 310 is positioned and engaged with the first slot 3231, thereby facilitating the welding and fixing of the phase shifting network 310 and the first adapter segment 323.

[0078] In some embodiments, the second adapter section 324 is provided with a second slot 3232 at one end away from the first adapter section 323, and the power supply component 230 is positioned and engaged with the second slot 3232, thereby facilitating the welding and fixing of the power supply component 230 and the second adapter section 324.

[0079] Referring to Figures 5 to 7, in some other embodiments, each group of phase-shifting cavities includes a plurality of phase-shifting cavities 301 sequentially separated along the second direction XX', and each phase-shifting cavity 301 is provided with a phase-shifting network 310. The operating frequency bands of the phase-shifting networks 310 in each phase-shifting cavity 301 within the same group of phase-shifting cavities are different.

[0080] The transition structure 320 includes a combining network 321. One end of the power supply component 230 is connected to the combining network 321. The phase-shifting networks 310 in each phase-shifting cavity 301 of the same group of phase-shifting cavities are respectively connected to the combining network 321 in the corresponding transition cavity. The phase-shifting networks 310 in the multiple phase-shifting cavities 301 of the first group of phase-shifting cavities are respectively connected to the combining network 321 in the first transition structure 320a. The phase-shifting networks 310 in the multiple phase-shifting cavities 301 of the second group of phase-shifting cavities are respectively connected to the combining network 321 in the second transition structure 320b.

[0081] Since the phase shifting network 310 in each phase shifting cavity 301 of the same group of phase shifting cavities is connected to the combining network 321 in the corresponding transfer cavity, each phase shifting network 310 in the same group of phase shifting cavities can be connected to the same power supply component 230 through the corresponding combining network 321, thereby enabling the combining of each phase shifting network 310 in different operating frequency bands.

[0082] In the embodiments shown in Figures 5 to 7, each group of phase-shifting cavities includes two phase-shifting cavities 301, and the phase-shifting networks 310 within the two phase-shifting cavities 301 of the same group operate at different frequency bands. Referring again to Figure 8, the phase-shifting networks 310 within the two phase-shifting cavities 301 of the first group of phase-shifting cavities are a first phase-shifting network 310a and a third phase-shifting network 310c, respectively. The first phase-shifting network 310a and the second phase-shifting network 310c operate at different frequency bands, and both are electrically connected to the combining network 321 in the first transition structure 320a.

[0083] The phase-shifting networks 310 in the two phase-shifting cavities 301 of the second phase-shifting cavity group are the second phase-shifting network 310b and the fourth phase-shifting network 310d, respectively. The second phase-shifting network 310b and the fourth phase-shifting network 310d operate in different frequency bands, and they are electrically connected to the combining network 321 in the second transition structure 320b, respectively.

[0084] In other embodiments, each group of phase-shifting cavities may also include three or more phase-shifting cavities, and the operating frequency bands of the phase-shifting networks in each phase-shifting cavity of the same group of phase-shifting cavities are different from each other.

[0085] Referring to Figure 8, in some embodiments, the adapter structure 320 further includes an adapter 322 corresponding to the phase shift cavity 301. One end of the adapter 322 is located inside the adapter cavity and connected to the combining network 321, and the other end of the adapter 322 extends into the corresponding phase shift cavity 301 and is connected to the phase shift network 310.

[0086] In some embodiments, the number of adapters 322 in each adapter structure 320 is the same as the number of phase shift cavities 301 in the corresponding phase shift cavity group. Thus, the multiple adapters 322 in each adapter structure 320 can be connected one-to-one with the phase shift networks 310 in the multiple phase shift cavities 301, thereby facilitating the connection of the phase shift networks 310 in the multiple phase shift cavities 301 in the same group of phase shift cavities to the combining network 321 in the corresponding adapter cavity.

[0087] In the embodiment shown in Figure 8, each transition structure 320 includes two transition components 322. The two phase-shifting networks 310 in the two phase-shifting cavities 301 of the same phase-shifting cavity group are respectively connected to the combining network 321 in the corresponding transition cavity through the two transition components 322.

[0088] In some embodiments, at the connection between the adapter 322 and the corresponding phase-shifting network 310, one of the adapter 322 and the phase-shifting network 310 is provided with a slot, and the other is positioned and engaged with the slot. In some embodiments, the end of the adapter 322 that extends into the phase-shifting cavity 301 may be provided with a slot, and the phase-shifting network 310 may engage with the slot on the adapter 322, thereby facilitating the welding and fixing of the phase-shifting network 310 and the adapter 322.

[0089] Referring to Figure 9, in some embodiments, the base station antenna device includes a column of radiating elements 200a. Alternatively, the base station antenna device may include multiple columns of radiating elements 200a arranged at intervals along a second direction XX'.

[0090] Each column of radiating elements 200a comprises multiple radiating elements 200 arranged sequentially 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 elements 200a. Each cavity structure 300 corresponds one-to-one with a column of radiating elements 200a. The length direction of the cavity structure 300 is the column direction of the corresponding radiating element column 200a.

[0091] Each transition cavity contains multiple transition structures 320 arranged sequentially along the third direction YY'. Each of the multiple transition structures 320 in each transition cavity corresponds one-to-one with a multiple radiation unit 200 in the corresponding radiation unit column 200a. The feed element 230 in the radiation unit 200 passes through the bottom of the avoidance cavity 302 and enters the transition cavity, where it connects with the corresponding transition structure 320.

[0092] In some embodiments, a plurality of first transition structures 320a are arranged sequentially along a third direction YY' within a first transition cavity 303a, and each of the plurality of first transition structures 320a corresponds one-to-one with a plurality of radiating elements 200 in a corresponding radiating element column 200a. A plurality of second transition structures 320b are arranged sequentially along a third direction YY' within a second transition cavity 303a, and each of the plurality of second transition structures 320b corresponds one-to-one with a plurality of radiating elements 200 in a corresponding radiating element column 200a. A first feed element 230a in each radiating element 200 passes through the bottom of the recess cavity 302 into the first transition cavity 303a and connects to the corresponding first transition structure 320a. A second feed element 230b in each radiating element 200 passes through the bottom of the recess cavity 302 into the second transition cavity 303b and connects to the corresponding second transition structure 320b.

[0093] In some embodiments, the connection between the power supply component 230 and the corresponding transition structure 320 is welding. Therefore, the power supply component 230 and the transition structure 320 can be welded or de-welded within the transition cavity. Since the connection position between the power supply component 230 and the transition structure 320 is located within the corresponding transition cavity, all transition structures 320 and their corresponding power supply components 230 within the same transition cavity can be de-welded simultaneously without affecting the welding reliability of other weld points within the phase shift cavity 301. This allows for the rapid disconnection of all transition structures 320 and their corresponding power supply components 230 within the same transition cavity, improving maintenance efficiency.

[0094] Please refer to Figures 1 to 3 and Figures 5 to 7. In some embodiments, the two transition cavities have openings on opposite sides along the second direction XX'. Thus, multiple transition structures 320 arranged along the third direction YY' can enter or exit their respective transition cavities through the corresponding openings, facilitating assembly or disassembly. Furthermore, when connecting or disconnecting the transition structure 320 from its corresponding power supply component 230, the operation can be performed by entering the transition cavity through the corresponding opening, thereby simplifying the process.

[0095] In some embodiments, the first transition cavity 303a has a first opening 3031 on the side opposite to the second transition cavity 303b, and the second transition cavity 303b has a second opening 3032 on the side opposite to the first transition cavity 303a. Thus, a plurality of first transition structures 320a arranged along the third direction YY' can be inserted into or removed from the first transition cavity 303a through the first opening 3031, and a plurality of second transition structures 320b arranged along the third direction YY' can be inserted into or removed from the second transition cavity 303b through the second opening 3032, thereby facilitating assembly or disassembly.

[0096] Furthermore, when connecting or disconnecting the first adapter structure 320a from the corresponding first power supply component 230a, the operation can be performed by entering the first adapter cavity 303a through the first opening 3031, thus facilitating the operation. Similarly, when connecting or disconnecting the second adapter structure 320b from the corresponding second power supply component 230b, the operation can be performed by entering the second adapter cavity 303b through the second opening 3032, thus facilitating the operation.

[0097] Referring to Figure 6, in some embodiments, the recess 302 has a third opening 3021 at the end near the reflector 100. The balun 220 extends into the recess 302 through the third opening 3021. The reflector 100 covers the third opening 3021. Thus, after the balun 220 passes through the reflector 100, it can extend into the recess 302 through the third opening 3021.

[0098] In some embodiments, the balun 220 abuts against the bottom of the cavity 302. In other embodiments, there may be a gap between the balun 220 and the bottom of the cavity 302.

[0099] Referring to Figures 1 to 3, in some embodiments, 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 is located on the side of the reflector 100 facing away from the cavity structure 300. The fastening portion 420 passes sequentially through the connecting portion 410, the reflector 100, and the cavity wall of the cavity structure 300 to securely connect the connecting portion 410, the reflector 100, and the cavity wall of the cavity structure 300.

[0100] By providing a connecting portion 410 on the outer wall of the balun 220, with the connecting portion 410 and the cavity structure 300 located on opposite sides of the reflector 100, a fastening portion 420 can sequentially pass through the connecting portion 410, the reflector 100, and the cavity structure 300 to fix the three components: the radiation unit 200, the reflector 100, and the cavity structure 300. In this way, the radiation unit 200 and the cavity structure 300 for housing the phase-shifting network 310 can be simultaneously fixed to the reflector 100 in a single operation, saving assembly steps. Furthermore, since the radiation unit 200 and the cavity structure 300 can share the fastening portion 420 for fixing to the reflector 100, the number of fastening portions 420 is reduced.

[0101] Referring to Figure 10, the connecting part 410 is provided with a first connecting hole 411. Referring to Figure 2, the reflector 100 is provided with a second connecting hole 101. The cavity wall of the cavity structure 300 near the end of the reflector 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, thereby fixing the connecting part 410, the reflector 100 and the cavity wall of the cavity structure 300.

[0102] In some embodiments, the cavity wall of the cavity structure 300 near the reflector plate 100 is provided with a threaded hole (i.e., a third connecting hole). The fastening part 420 includes a rod and a head, with the head connected to one end of the rod. The end of the rod away from the head passes through the connecting part and the reflector plate 100 in sequence and is threadedly connected to the threaded hole.

[0103] In some embodiments, the end of the rod away from the head can pass through the first connecting hole 411 and the second connecting hole 101 in sequence. The third connecting hole is a threaded hole. Therefore, when the rod is screwed into the third connecting hole until the head abuts against the side of the connecting part 410 facing away from the reflector plate 100, the connecting part 410, the reflector plate 100 and the cavity wall of the cavity structure 300 can be fixed.

[0104] The connecting part 410 abuts against the reflector 100, and the cavity structure 300 abuts against the reflector 100, which is conducive to the reliable fixation of the connecting part 410, the reflector 100 and the cavity wall of the cavity structure 300.

[0105] In some embodiments, the fastening part 420 may be a bolt, and the rod may be a screw.

[0106] In some embodiments, the connecting part 410 and the balun 220 are integrally formed, so the connecting part 410 can be formed at the same time as the balun 220 is processed, which is convenient for processing and the connection between the connecting part 410 and the balun 220 is reliable.

[0107] Referring to Figures 10 and 11, in some embodiments, a first virtual axis is defined along a first direction ZZ', and a second virtual axis is defined along a third direction YY'. The third direction YY' is perpendicular to the first direction ZZ' and perpendicular to the second direction XX', so the first virtual axis is perpendicular to the second virtual axis. The first virtual axis intersects the second virtual axis, thereby dividing the space into four quadrants. There are two pairs of radiating arms 210, totaling four radiating arms 210. The four radiating arms 210 are located one-to-one within the four quadrants. In the orthogonal dual-polarized radiating unit, one pair of diagonally arranged radiating arms 210 (located in the first and third quadrants respectively) is 45° polarized, and the other pair of diagonally arranged radiating arms 210 (located in the second and fourth quadrants respectively) is -45° polarized, thus the two pairs of radiating arms 210 constitute orthogonal polarization.

[0108] Along the third direction YY', two adjacent radial arms 210 are provided with opposing clearance grooves on their sides, which together form clearance holes 211. Each clearance hole 211 corresponds to a fastening part 420. The fastening part 420 is located within the projection range of the corresponding clearance hole 211 onto the reflector plate 100, and the clearance hole 211 allows operating tools that operate on the fastening part 420 to pass through.

[0109] In some embodiments, two adjacent radiating arms 210 along the third direction YY' are defined as the first radiating arm 210a and the second radiating arm 210b, respectively. In this embodiment, since the four radiating arms 210 are located in the four quadrants, there are a total of two columns of first radiating arms 210a and second radiating arms 210b adjacent along the third direction YY'.

[0110] In the two adjacent radial arms 210 in the third direction YY', the first radial arm 210a is provided with a first clearance groove 211a on the side near the second radial arm 210b, and the second radial arm 210b is provided with a second clearance groove 211b on the side near the first radial arm 210a. The first clearance groove 211a and the second clearance groove 211b together form a clearance hole 211.

[0111] Since the fastening part 420 is located within the projection range of the outline of the corresponding clearance hole 211 on the reflector plate 100, the position of the fastening part 420 and the corresponding clearance hole 211 corresponds along the first direction ZZ'. Thus, after the operating tool passes through the clearance hole 211, the fastening part 420 can be operated, making it convenient to pass the fastening part 420 through the connecting part 410, the reflector plate 100 and the cavity wall of the cavity structure 300.

[0112] Understandably, when the fastener 420 is a bolt, the tool used can be a screwdriver.

[0113] Referring to Figures 10 and 11, in some embodiments, there are two sets of connecting components 400, arranged along the second direction XX'. Each connecting component 400 is connected to a balun 220 in a one-to-one correspondence. The two baluns 220 are arranged along the second direction XX', with the two sets of connecting components 400 located on opposite sides of the two baluns 220 along the second direction XX'.

[0114] Of the two sets of connecting components 400, one set is disposed on the side of the first balun 220a away from the second balun 220b along the second direction XX', and the other set is disposed on the side of the second balun 220b away from the first balun 220a along the second direction XX'. Thus, in this embodiment, two sets of connecting components 400 can be provided, thereby ensuring a reliable connection between the radiation unit 200, the reflector 100, and the cavity structure 300.

[0115] Referring to Figures 12 and 13, in some embodiments, the radiating arm 210 is provided with a hollowed-out region 212 extending along the first direction ZZ'. The fastening part 420 is located within the projection range of the outline of the corresponding hollowed-out region 212 on the reflector 100.

[0116] Since the outline of the corresponding hollow area 212 is within the projection range on the reflector plate 100, the position of the fastening part 420 corresponds to the position of the corresponding hollow area 212 along the first direction ZZ'. Thus, after the operating tool passes through the hollow area 212, the fastening part 420 can be operated, making it convenient to pass the fastening part 420 through the connecting part 410, the reflector plate 100 and the cavity wall of the cavity structure 300.

[0117] In this embodiment, by setting the fastening part 420 within the projection range of the outline of the corresponding hollow area 212, the fastening part 420 can be operated by means of the hollow area 212 on the radial arm 210 itself, without the need to specially open the avoidance hole 211.

[0118] Referring to Figures 12 and 13, in some embodiments, there are two sets of connecting components 400, each connected to a balun 220 in a one-to-one correspondence. The arrangement direction of the two sets of connecting components 400 is perpendicular to the first direction ZZ', and the arrangement direction of the two sets of connecting components 400 forms an angle with the second direction XX'. The two baluns 220 are arranged along the second direction XX'.

[0119] 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 parts 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.

[0120] In some embodiments, the angle between the arrangement directions of the two sets of connecting components 400 and the second direction XX' is 45°. This ensures that the positions of the first connecting hole 411 and the fastening part 420 are as close as possible to the center of the projection range of the corresponding hollow area 212, facilitating operation.

[0121] In some embodiments, the positions of the two sets of connecting components 400 correspond to the positions of the two radial arms 210 in the first quadrant and the third quadrant, that is, the fastening portions 420 of the two sets of connecting components 400 correspond to the hollow areas 212 of the two radial arms 210 in the first quadrant and the third quadrant, respectively.

[0122] The end of the connecting portion 410 facing away from the corresponding balun 220 is inclined relative to the second direction XX'. In some embodiments, 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 area of ​​the corresponding hollow area 212, which facilitates operation.

[0123] 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.

[0124] In some embodiments, the cavity structure 300 is divided into two cavity modules arranged along the second direction XX', namely a first cavity module and a second cavity module. Each cavity module includes a transition cavity and a phase-shifting cavity group adjacent along the first direction ZZ'. Referring to FIG14, in some embodiments, the first cavity module includes a first transition cavity 303a and a first phase-shifting cavity group 301a adjacent along the first direction ZZ'. The second cavity module includes a second transition cavity 303b and a second phase-shifting cavity group 301b adjacent along the first direction ZZ'. A partition wall 330 is provided between the transition cavity and the phase-shifting cavity 301 of the corresponding phase-shifting cavity group. The partition wall 330 separates the transition cavity and the phase-shifting cavity 301 of the corresponding phase-shifting cavity group.

[0125] The combining network 321 has a first signal line 611, which includes a first main body segment 6111 and a first bend segment 6112. The first main body segment 6111 is parallel to the partition wall 330. One end of the first bend segment 6112 is connected to one end of the first main body segment 6111, and the first bend segment 6112 bends toward the partition wall 330 relative to the first main body segment 6111.

[0126] The phase-shifting 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 passes through the partition wall 330, with one end of the adapter 322 located in the adapter cavity and connected to the corresponding first bending section 6112, and the other end of the adapter 322 located in the phase-shifting cavity 301 and connected to the corresponding second signal line 621.

[0127] Because the first bent segment 6112 bends towards the partition wall 330 compared to the first main body segment 6111, it can be closer to the partition wall 330. Thus, the first bent segment 6112 allows the first signal line 611 to be closer to the second signal line 621 (compared to a first signal line without the first bent segment), shortening the distance between the first signal line 611 and the second signal line 621. Simultaneously, it can shorten the connection distance of the adapter 322, thereby reducing the discontinuity in signal transmission between the first signal line 611 (combining network 321) and the second signal line 621 (phase shifting network 310) in two different cavities, and improving signal transmission performance.

[0128] In some embodiments, the combining network 321 is a sheet metal network. The phase-shifting network 310 is a sheet metal network.

[0129] In some embodiments, the first signal line 611 is a sheet metal strip. The second signal line 621 is a sheet metal strip.

[0130] Referring to Figure 14, in some embodiments, the first bending segment 6112 includes a first bending segment 6112a and a second bending segment 6112b. One end of the first bending segment 6112a is connected to one end of the first main body segment 6111, and the first bending segment 6112a bends towards the partition wall 330 relative to the first main body segment 6111. One end of the second bending segment 6112b is connected to the end of the first bending segment 6112a away from the first main body segment 6111, and the second bending segment 6112b is parallel to the partition wall 330.

[0131] The first bending segment 6112a bends towards the partition wall 330, shortening the distance between the first signal line 611 and the first signal line 612. Simultaneously, the second bending segment 6112b is parallel to the partition wall 330, facilitating the connection between the adapter 322 and the second bending segment 6112b, thus facilitating the connection between the adapter 322 and the first signal line 611.

[0132] Understandably, the extension direction of the adapter 322 is along the first direction ZZ', which is along the thickness direction of the partition wall 330. The adapter 322 passes through the partition wall along the first direction ZZ'. Since the second bent segment 6112b is parallel to the partition wall 330, the second bent segment 6112b is perpendicular to the extension direction of the adapter 322, thereby facilitating the connection between the two.

[0133] In some embodiments, both the transition cavity and the phase-shifting cavity 301 have a length direction, a width direction, and a thickness direction, with the length, width, and thickness of the transition cavity decreasing sequentially, and the length, width, and thickness of the phase-shifting cavity 301 decreasing sequentially. The length directions of the transition cavity and the phase-shifting cavity 301 are the same, both along a third direction.

[0134] Please refer to Figure 13. The width direction of the phase shifting cavity 301 is along the first direction ZZ', and the width direction of the transition cavity is perpendicular to the first direction ZZ' and along the second direction XX'. The third direction is perpendicular to the first direction ZZ' and the second direction XX'.

[0135] Referring to Figure 13, in some embodiments, within the phase-shifting cavity group of each cavity module, at least one second signal line 621 of the phase-shifting network 310 includes a second main segment 6211 and a second bent segment 6212, one end of the second bent segment 6212 being connected to one end of the second main segment 6211. The second bent segment 6212 is bent relative to the second main segment 6211 and is parallel to the partition wall 330.

[0136] The extension direction of the second main body segment 6211 can be along the width direction of the phase shift cavity 301, i.e., the first direction ZZ'. By bending the second bent segment 6212 relative to the second main body segment 6211, the second bent segment 6212 is parallel to the partition wall 330, which facilitates the connection between the adapter 322 and the second bent segment 6212, i.e., facilitates the connection between the adapter 322 and the second signal line 621.

[0137] The adapter 322 is inserted through the partition wall 330 along the first direction ZZ'. Since the second bent section 6212 is parallel to the partition wall, the second bent section 6212 is perpendicular to the extension direction of the adapter 322, thereby facilitating the connection between the two.

[0138] Figures 15 to 18 show exploded view diagrams of 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.

[0139] 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 be implemented using the embodiments shown in FIG16 or FIG18.

[0140] 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 be implemented using the embodiments shown in Figure 15 or Figure 17.

[0141] 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 be implemented using the embodiments shown in FIG16 or FIG18.

[0142] 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 be implemented using the embodiments shown in FIG15 or FIG17.

[0143] Referring to Figures 15 to 18, in some embodiments, one end of the adapter 322 located in the phase-shifting cavity 301 is the first connection end, and the end of the second signal line 621 connected to the adapter 322 is the first mating end. One of the first connection end and the first mating end is provided with a first positioning groove 601, and the other mates with the first positioning groove 601, thereby facilitating the welding of the first mating end and the first connection end.

[0144] In the embodiment shown in Figure 15, 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 bent segment 6112b extends along the third direction YY'. The first mating end of the second signal line 621 is provided with a first positioning groove 601, which is a recessed groove along the first direction ZZ'. The first connecting end of the adapter 322 is provided with a positioning boss 631, whose protrusion direction is along the second direction XX'. The positioning boss 631 mates with the first positioning groove 601.

[0145] In the embodiment shown in Figure 16, the second signal line 621 includes a second main body segment 6211 and a second bent segment 6212. The extension direction of the second main body segment 6211 is along the first direction ZZ', and the extension direction of the second bent segment 6212 is along the second direction XX'. The extension direction of the first main body segment 6211 is along the second direction XX', and the extension direction of the second bent segment 6112b is along the second direction XX'. The first mating end of the second signal line 621 is the end of the second bent segment 6212 away from the second main body segment 6211, and the first mating end is provided with a first positioning groove 601. The first connecting end of the adapter 322 is provided with a positioning boss 631, and the protrusion direction of the positioning boss 631 is along the first direction ZZ'. The positioning boss 631 mates with the first positioning groove 601.

[0146] In the embodiment shown in Figure 17, the second signal line 621 includes a second main body segment 6211 and a second bent segment 6212. The extension direction of the second main body segment 6211 is along the first direction ZZ', and the extension direction of the second bent segment 6212 is along the second direction XX'. The extension direction of the first main body segment 6211 is along the third direction YY', and the extension direction of the second bent segment 6212b is also along the third direction YY'. The first mating end of the second signal line 621 is the end of the second bent segment 6212 away from the second main body segment 6211, and the first mating end is provided with a first positioning groove 601. The first connecting end of the adapter 322 mates with the first positioning groove 601.

[0147] In the embodiment shown in Figure 18, the second signal line 621 includes a second main body segment 6211 and a second bent segment 6212. The extension direction of the second main body segment 6211 is along the first direction ZZ', and the extension direction of the second bent segment 6212 is along the second direction XX'. The extension direction of the first main body segment 6211 is along the second direction XX', and the extension direction of the second bent segment 6112b is along the second direction XX'. The first mating end of the second signal line 621 is the end of the second bent segment 6212 away from the second main body segment 6211, and the first mating end is provided with a first positioning groove 601. The first connecting end of the adapter 322 is provided with a positioning boss 631, and the protrusion direction of the positioning boss 631 is along the first direction ZZ'. The positioning boss 631 mates with the first positioning groove 601.

[0148] Referring to Figure 16, in some embodiments, one end of the adapter 322 located in the adapter cavity is the second connection end, and the end of the first signal line 611 connected to the adapter 322 is the second mating end. One of the second connection end and the second mating end is provided with a second positioning groove 602, and the other mates with the second positioning groove 602, thereby facilitating the welding of the second mating end and the second connection end.

[0149] In the embodiment shown in Figure 16, the first main body segment 6111 extends in the second direction XX', and the second bent segment 6112b extends in the second direction XX'. The second mating end of the first signal line 611 is the second bent segment 6112b, and the second mating end is provided with a second positioning groove 602. The second connecting end of the adapter 322 is provided with a limiting boss 632, and the protrusion direction of the limiting boss 632 is along the first direction ZZ'. The limiting boss 632 mates with the second positioning groove 602.

[0150] Please refer to Figures 15, 17, and 18. In some embodiments, the second bending segment 6112b is provided with a second positioning groove 602. The adapter 322 passes through the second positioning groove 602 along a first direction ZZ'. The first direction ZZ' is along the thickness direction of the partition wall. One end of the adapter 322 located in the adapter cavity has a limiting boss 632. The limiting boss 632 is located on the side of the second bending segment 6112b facing away from the partition wall, and the second positioning groove 602 prevents the limiting boss 632 from passing through. During assembly, when the limiting boss 632 abuts against the second bending segment 6112b, it indicates that the adapter 322 is assembled in place along the first direction ZZ', which facilitates the positioning of the adapter 322 and the welding of the adapter 322 to the second bending segment 6112b.

[0151] In the embodiments shown in Figures 15, 17, and 18, the limiting boss 632 of the adapter 322 protrudes along the third direction YY'. The adapter 322 has limiting bosses 632 on both sides along the third direction YY'.

[0152] In the embodiments shown in Figures 15 and 17, the first main body segment 6111 extends in the third direction YY', the second bending segment 6112b extends in the third direction YY', and the second positioning groove 602 is provided in the second bending segment 6112b.

[0153] In the embodiment shown in Figure 18, the first main body segment 6111 extends in the second direction XX', the second bending segment 6112b extends in the second direction XX', and the second positioning groove 602 is provided in the second bending segment 6112b.

[0154] This application embodiment also provides a base station, which includes an antenna radome and a base station antenna device according to any of the above embodiments. The antenna radome is connected to the reflector 100 and covers the radiating unit 200.

[0155] The beneficial effects of the base station antenna device and base station in the embodiments of this application are as follows:

[0156] When maintaining a base station antenna device, if it is necessary to disconnect the electrical connection between the feeder and the corresponding phase-shifting network, it is only necessary to disconnect the electrical connection between the feeder and the corresponding adapter structure. Since the connection between the feeder and the adapter structure is located within the corresponding adapter cavity, the operation to disconnect the feeder and the adapter structure within the adapter cavity is performed within the adapter cavity of one of the two cavities, thus not affecting the welding reliability of other solder joints in the phase-shifting cavity of the other cavity.

[0157] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0158] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A base station antenna device, wherein, 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, wherein 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 each of the two sets of phase-shifting cavity groups is provided with a phase-shifting network; the other cavity has two transition cavities separated along the second direction, and each of the two transition cavities is provided with 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.

2. The base station antenna device according to claim 1, wherein, The two transition cavities each have an opening on one side that is opposite to each other along the second direction.

3. The base station antenna device according to claim 1, wherein, 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.

4. The base station antenna device according to claim 3, wherein, 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.

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

6. The base station antenna device according to claim 1, wherein, 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.

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

8. The base station antenna device according to claim 1, wherein, The balun abuts against the bottom of the cavity of the avoidance chamber.

9. The base station antenna device according to claim 1, wherein, 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.

10. The base station antenna device according to claim 1, wherein, 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.

11. The base station antenna device according to claim 10, wherein, 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.

12. The base station antenna device according to claim 10, wherein, The radiating arm has a hollow area extending through the first direction; the fastening part is located within the projection range of the outline of the corresponding hollow area on the reflector plate.

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

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