Base station antenna device and base station

Abstract

The invention relates to a base station antenna device and a base station. The base station antenna device comprises a reflecting plate, a radiating unit and a cavity structure, the radiation unit comprises two pairs of radiation arms which are orthogonally polarized, two baluns and two feed parts; the cavity structure comprises two layers of cavities separated along a first direction, and one layer of cavity is provided with two phase shift cavity groups arranged along a second direction and an avoidance cavity positioned between the two phase shift cavity groups; the other layer of cavity is provided with two transfer cavities which are separated along a second direction; one ends of the two feed parts penetrate into the two switching cavities in a one-to-one correspondence manner, and one ends of the feed parts are connected with the switching structure; and the switching structures in the switching cavities extend into the corresponding phase shift cavity groups and are connected with the phase shift network. When the connection position of the feed piece in the switching cavity and the switching structure is subjected to the operation of removing the electric connection, the operation position is located in the switching cavity in one layer of cavity in the two layers of cavities, so that the welding reliability of other welding spots in the phase shift cavity in the other layer of cavity is not influenced.

Description

Technical Field

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

[0002] The base station antenna device generally includes a reflector, a phase shifter, a radiation unit, etc. In the related art, the radiation unit is installed on one side of the reflector, and the phase shifter is installed on the side of the reflector facing away from the radiation unit. The phase shifter includes a phase shift cavity and a phase shift network located in the phase shift cavity. The radiation unit includes a radiation arm, a balun, a feeder, etc. One end of the balun is connected to the radiation arm, and the other end of the balun is connected to the reflector. The feeder is arranged in the balun. The end of the feeder away from the radiation arm passes through the reflector and extends into the phase shift cavity, thereby being welded to the phase shift network.

[0003] When maintaining the base station antenna device, it is sometimes necessary to desolder the feeder and the phase shift network to release the electrical connection between the two. However, desoldering the feeder and the phase shift network easily affects the welding reliability of other solder joints in the phase shift cavity. Summary of the invention

[0004] Based on this, it is necessary to provide a base station antenna device and a base station to address the problem that desoldering between the feed component and the phase shift network may easily affect the welding reliability of other solder joints in the phase shift cavity in the base station antenna device in the related technology.

[0005] A base station antenna device, comprising: a reflector, a radiation unit and a cavity structure;

[0006] The radiation unit comprises two pairs of orthogonally polarized radiation arms, two baluns and two feeding elements, one end of the balun is connected to the radiation arm, the two feeding elements are arranged in a one-to-one correspondence through the two baluns, and the balun is fixedly connected to the reflection plate;

[0007] 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 comprises two layers of cavities separated along the first direction, wherein one layer of cavities is provided with two groups of phase-shifting cavities arranged along the second direction and a position-avoiding cavity located between the two groups of phase-shifting cavities, the second direction is perpendicular to the first direction, and phase-shifting networks are respectively provided in the two groups of phase-shifting cavities; the other layer of cavities is provided with two switching cavities separated along the second direction, and switching structures are respectively provided in the two switching cavities;

[0008] One end of the balun away from the radiation arm passes through the reflector and extends into the avoidance cavity; one end of the two feeding elements passes through the two transfer cavities one by one, and one end of the feeding element is connected to the transfer structure; the two transfer cavities correspond one by one to the two groups of phase shift cavity groups, and the transfer structure in the transfer cavity extends into the corresponding phase shift cavity group and is connected to the phase shift network.

[0009] In one embodiment, the two adapter cavities have openings on their sides facing away from each other along the second direction.

[0010] In one embodiment, each phase-shifting cavity group comprises 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 the phase-shifting cavities in the same phase-shifting cavity group are different from each other;

[0011] The switching structure includes a combining network, one end of the feeding element is connected to the combining network, and the phase shifting networks in each phase shifting cavity in the same phase shifting cavity group are respectively connected to the combining network in the corresponding switching cavity.

[0012] In one embodiment, the switching structure further includes a switching element arranged corresponding to the phase shift cavity, one end of the switching element is located in the switching cavity and connected to the combining network, and the other end of the switching element extends into the corresponding phase shift cavity and connected to the phase shift network.

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

[0014] In one embodiment, the base station antenna device includes one column of radiation units or multiple columns of radiation units arranged at intervals along the second direction; each column of the radiation units includes a plurality of the radiation units arranged in sequence along a third direction, and the third direction is perpendicular to the first direction and perpendicular to the second direction; the number of the cavity structures is the same as the number of the radiation unit columns, and the cavity structures correspond to the radiation unit columns one by one;

[0015] A plurality of the adapter structures arranged in sequence along the third direction are disposed in each of the adapter cavities; the plurality of the adapter structures in each of the adapter cavities correspond one-to-one to the plurality of the radiation units in the corresponding radiation unit column.

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

[0017] In one embodiment, the balun abuts against the bottom of the avoidance cavity.

[0018] In one embodiment, at the connection between the switching structure and the phase-shifting network, one of the switching structure and the phase-shifting network is provided with a slot, and the other is positioned and matched with the slot.

[0019] In one embodiment, the base station antenna device further includes a connecting component, the connecting component includes a connecting portion and a fastening portion, the connecting portion 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 at one end close to the reflector is provided with a threaded hole;

[0020] The fastening part includes a rod and a head connected to the rod; one end of the rod away from the head passes through the connecting part and the reflecting plate in sequence and is threadedly matched with the threaded hole, so that the head abuts against the side of the connecting part facing away from the reflecting plate.

[0021] In one embodiment, a first virtual axis is defined along the first direction, and a second virtual axis is defined along a third direction, wherein the first virtual axis intersects with the second virtual axis to divide four quadrants, and the four radiating 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] Avoidance grooves opposite to each other are respectively provided on the sides of two adjacent radiation arms along the third direction, and the two avoidance grooves opposite to each other are combined to form a avoidance hole; the avoidance holes are arranged in a one-to-one correspondence with the fastening parts; the fastening parts are located within the projection range of the contour of the corresponding avoidance hole on the reflecting plate.

[0023] In one embodiment, the radiation arm is provided with a hollow area penetrating along the first direction; the fastening portion is located within a projection range of a corresponding outline of the hollow area on the reflective plate.

[0024] A base station comprises an antenna cover and the base station antenna device according to any one of the above embodiments, wherein the antenna cover is connected to the reflection plate and is arranged outside the radiation unit.

[0025] In the above-mentioned base station antenna device and base station, a position avoidance cavity is provided between the two phase shift cavity groups, and the end of the balun away from the radiation arm can pass through the reflector and extend into the position avoidance cavity. One end of the feeder passes through the corresponding balun and the cavity bottom of the position avoidance cavity and extends into the corresponding switching cavity, and is connected to the corresponding switching structure. The switching structure extends into the corresponding phase shift cavity group and is connected to the corresponding phase shift network, so that the feeder is indirectly connected to the corresponding phase shift network through the corresponding switching structure.

[0026] When maintaining the above-mentioned base station antenna device, if it is necessary to release the electrical connection between the feeder and the corresponding phase-shifting network, it is only necessary to release the electrical connection between the feeder and the corresponding switching structure. Since the connection position between the feeder and the switching structure is located in the corresponding switching cavity, when the electrical connection between the feeder and the switching structure in the switching cavity is released (i.e., when the electrical connection between the feeder and the phase-shifting network is released), the operation position is located in the switching cavity in one of the two layers of cavities, so that the welding reliability of other welding points in the phase-shifting cavity in the other layer of the cavity will not be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a base station antenna device according to an embodiment.

[0028] Figure 2 for Figure 1 Structural breakdown diagram.

[0029] Figure 3 for Figure 1 Front view of .

[0030] Figure 4 for Figure 3 Schematic diagram of the structure of the adapter.

[0031] Figure 5 FIG. 4 is a schematic structural diagram of a base station antenna device according to another embodiment.

[0032] Figure 6 for Figure 5 Structural breakdown diagram.

[0033] Figure 7 for Figure 5 Front view of .

[0034] Figure 8 for Figure 5 Schematic diagram of the connection structure of two feeding devices and four phase-shifting networks.

[0035] Fig. 9 A schematic structural diagram of a base station antenna device according to an embodiment.

[0036] Fig.10 It is a schematic diagram of the connection structure of a radiation arm, a balun and a connection part according to an embodiment.

[0037] Fig.11 for Fig.10 Top view of the .

[0038] Fig.12 FIG. 4 is a schematic diagram of the connection structure of a radiation arm, a balun and a connection part according to another embodiment.

[0039] Fig.13 for Fig.12 Top view of the .

[0040] Fig.14 FIG. 4 is a schematic diagram of a cavity structure according to an embodiment.

[0041] Fig.15 The diagram is a structural exploded view of the connection between the first signal line, the second signal line and the adapter according to an embodiment.

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

[0043] Fig.17 This is a structural exploded view of the connection between the first signal line, the second signal line and the adapter according to another embodiment.

[0044] Fig.18 This is a structural exploded view of the connection between the first signal line, the second signal line and the adapter according to another embodiment.

[0045] Description of reference numerals:

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

[0047] 100, reflecting plate; 101, second connecting hole;

[0048] 200a, radiation unit column; 200, radiation unit; 210, radiation arm; 210a, first radiation arm; 211a, first avoidance groove; 210b, second radiation arm; 211b, second avoidance groove; 211, avoidance hole; 212, hollow area; 220, balun; 220a, first balun; 220b, second balun; 230, feeder; 230a, first feeder; 230b, second feeder; 240, loading sheet;

[0049] 300, cavity structure; 301a, first phase-shift cavity group; 301b, second phase-shift cavity group; 301, phase-shift cavity; 310, phase-shift network; 302, avoidance cavity; 3021, third opening; 303a, first switching cavity; 303b, second switching cavity; 3031, first opening; 3032, second opening; 320, switching structure; 321, combining network; 322, switching element; 323, first switching section; 3231, first card slot; 324, second switching section; 3241, second card slot; 330, partition wall;

[0050] 400, connecting assembly; 410, connecting portion; 411, first connecting hole; 420, fastening portion;

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

[0052] 621, second signal line; 6211, second main body 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-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0055] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0056] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0058] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0060] Please combine Figures 1 to 3 An embodiment of the present application provides a base station antenna device, which includes: a reflector 100, a radiation unit 200 and a cavity structure 300.

[0061] The radiation unit 200 is a dual-polarization radiation unit, which includes two pairs of orthogonally polarized radiation arms 210, two baluns 220 and two feeders 230, one end of the balun 220 is connected to the radiation arm 210, and the two feeders 230 are arranged in the two baluns 220 in a one-to-one correspondence. The balun 220 is fixedly connected to the reflector 100, so that the radiation unit 200 is fixed to the reflector 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 and the radiation arm 210 are respectively located on both sides of the reflector 100 along the first direction ZZ', and the first direction 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 layers of cavities separated along the first direction ZZ'. There is a partition wall between the two layers of cavities, and the partition wall is a cavity wall shared by the two layers of cavities. The two layers of cavities are separated by the partition wall.

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

[0064] In the two-layer cavity, the other layer of cavity is provided with two switching cavities separated along the second direction XX'. The switching cavity is located on the side of the phase shift cavity group facing away from the reflector 100. The two switching cavities are respectively provided with switching structures 320. The two switching cavities are respectively the first switching cavity 303a and the second switching cavity 303b. The switching structure 320 in the first switching cavity 303a is the first switching structure 320a. The switching structure 320 in the second switching cavity 303b is the second switching structure 320b.

[0065] One end of the balun 220 away from the radiation arm 210 passes through the reflector 100 and extends into the avoidance cavity 302. One end of the two feeders 230 passes through the two switching cavities one by one, and one end of the feeders 230 is connected to the switching structure 320. The two switching cavities correspond to the two phase shift cavity groups one by one, and the switching structure 320 in the switching cavity extends into the corresponding phase shift cavity group and is connected to the phase shift network 310.

[0066] Specifically, one end of the first feeder 230a passes through the first balun 220a and the bottom of the avoidance cavity 302, and then extends into the first transfer cavity 303a, and then connects with the first transfer structure 320a. The first transfer structure 320a extends into the phase shift cavity 301 of the first phase shift cavity group, and connects 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 to the phase shift network 310 in the first phase shift cavity group through the first transfer structure 320a.

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

[0068] In the above-mentioned base station antenna device, a position avoidance cavity 302 is provided between the two phase shift cavity groups, and one end of the balun 220 away from the radiation arm 210 can pass through the reflector 100 and extend into the position avoidance cavity 302. One end of the feeder 230 passes through the corresponding balun 220 and the cavity bottom of the position avoidance cavity 302 and extends into the corresponding switching cavity, and is connected to the corresponding switching structure 320. The switching structure 320 extends into the corresponding phase shift cavity group and is connected to the corresponding phase shift network 310, so that the feeder 230 is indirectly connected to the corresponding phase shift network 310 through the corresponding switching structure 320.

[0069] When the above-mentioned base station antenna device is maintained, if it is necessary to release the electrical connection between the feed 230 and the corresponding phase shift network 310, it is only necessary to release the electrical connection between the feed 230 and the corresponding adapter structure 320. Since the connection position between the feed 230 and the adapter structure 320 is located in the corresponding adapter cavity, when the electrical connection between the feed 230 and the adapter structure 320 in the adapter cavity is released (i.e., when the electrical connection between the feed 230 and the adapter structure 320 is released), the operation position is located in the adapter cavity in one of the two layers of cavities, so that the welding reliability of other welding points in the phase shift cavity 301 in the other layer of the cavity will not be affected.

[0070] In some technical solutions, the phase shift network can be connected to the phase shift cavity through a grounding conductor to achieve grounding. The above-mentioned other welding points in the phase shift cavity 301 are, for example, welding points between the grounding conductor and the cavity wall of the phase shift cavity, welding points between the phase shift network and the grounding conductor, etc. The types of the above-mentioned other welding points are not listed one by one, and reference can be made to the prior art.

[0071] Furthermore, since the balun 220 extends into the avoidance cavity 302, the corresponding feeding element 230 passes through the balun 220 and the bottom of the avoidance cavity 302. Therefore, the inner cavity of the balun 220 simultaneously forms a resonant cavity in the avoidance cavity 302, which is beneficial to improving the filtering characteristics of the high-frequency radiation unit to the low-frequency radiation unit, thereby improving the radiation efficiency of the base station antenna.

[0072] In the embodiment of the present application, a phase-shifting cavity group is defined, and the cavity structure 300 includes two phase-shifting cavity groups arranged along the second direction XX'. It is called a phase-shifting cavity group because each phase-shifting cavity group is composed of at least one phase-shifting cavity. The number of phase-shifting cavities in the two phase-shifting cavity groups is the same. Specifically, each phase-shifting cavity group may have one phase-shifting cavity, or may have more than two phase-shifting cavities. Each phase-shifting cavity is used to set a phase-shifting network.

[0073] Please combine Figures 1 to 3 In some embodiments, the radiation unit 200 further includes a loading plate 240. The loading plate 240 is located on a side of the radiation arm 210 facing away from the balun 220 and is spaced apart from the radiation arm 210.

[0074] Optionally, the radiation unit further includes a support portion (not shown), one end of the support portion is connected to the side of the radiation arm 210 facing away from the balun 220 , and the other end of the support portion is connected to the loading plate 240 so that the loading plate 240 is spaced apart from the spaced radiation arm 210 .

[0075] Please combine Figures 1 to 3 In some embodiments, the number of phase-shifting cavities 301 in each phase-shifting cavity group is one. A phase-shifting network 310 is provided in each phase-shifting cavity 301. The phase-shifting network 310 in the phase-shifting cavity 301 of the first phase-shifting cavity group is a first phase-shifting network 310a. The phase-shifting network 310 in the phase-shifting cavity 301 of the second phase-shifting cavity group is a second phase-shifting network 310b.

[0076] 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 matched with the slot.

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

[0078] Optionally, a first slot 3231 is provided at one end of the first transition section 323 away from the second transition section 324 , and the phase shift network 310 is positioned and matched with the first slot 3231 , so as to facilitate welding and fixing the phase shift network 310 and the first transition section 323 .

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

[0080] Please combine Figures 5 to 7 In other embodiments, each phase-shifting cavity group 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 in the same phase-shifting cavity group are different from each other.

[0081] The switching structure 320 includes a combining network 321. One end of the feeder 230 is connected to the combining network 321, and the phase-shifting networks 310 in each phase-shifting cavity 301 in the same phase-shifting cavity group are respectively connected to the combining network 321 in the corresponding switching cavity. The phase-shifting networks 310 in the multiple phase-shifting cavities 301 of the first phase-shifting cavity group are respectively connected to the combining network 321 in the first switching structure 320a. The phase-shifting networks 310 in the multiple phase-shifting cavities 301 of the second phase-shifting cavity group are respectively connected to the combining network 321 in the second switching structure 320b.

[0082] Since the phase shift networks 310 in each phase shift cavity 301 in the same phase shift cavity group are respectively connected to the combining network 321 in the corresponding switching cavity, each phase shift network 310 in the same phase shift cavity group can be connected to the same feeding element 230 through the corresponding combining network 321, thereby achieving combining of each phase shift network 310 in different working frequency bands.

[0083] Specifically in Figures 5 to 7 In the embodiment shown, each phase-shifting cavity group includes two phase-shifting cavities 301, and the operating frequency bands of the phase-shifting networks 310 in the two phase-shifting cavities 301 in the same phase-shifting cavity group are different. Figure 8 The phase shift networks 310 in the two phase shift cavities 301 of the first phase shift cavity group are respectively the first phase shift network 310a and the third phase shift network 310c. The first phase shift network 310a and the second phase shift network 310c have different operating frequency bands and are respectively electrically connected to the combining network 321 in the first switching structure 320a.

[0084] The phase shift networks 310 in the two phase shift cavities 301 of the second phase shift cavity group are the second phase shift network 310b and the fourth phase shift network 310d. The second phase shift network 310b and the fourth phase shift network 310d have different operating frequency bands and are electrically connected to the combining network 321 in the second switching structure 320b.

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

[0086] refer to Figure 8 In some embodiments, the switching structure 320 further includes a switching element 322 corresponding to the phase shift cavity 301. One end of the switching element 322 is located in the switching cavity and connected to the combining network 321, and the other end of the switching element 322 extends into the corresponding phase shift cavity 301 and is connected to 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-shifting cavities 301 in the corresponding phase-shifting cavity group. In this way, the multiple adapters 322 in each adapter structure 320 can be connected one-to-one with the phase-shifting networks 310 in the multiple phase-shifting cavities 301, thereby facilitating the connection of the phase-shifting networks 310 in the multiple phase-shifting cavities 301 in the same group of phase-shifting cavity groups with the combining networks 321 in the corresponding adapter cavities.

[0088] exist Figure 8 In the illustrated embodiment, each switching structure 320 includes two switching components 322 , and the two phase shifting networks 310 in the two phase shifting cavities 301 in the same phase shifting cavity group are connected to the combining networks 321 in the corresponding switching cavities through the two switching components 322 .

[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 slot, and the other is positioned and matched with the slot. Specifically, the end of the adapter 322 extending into the phase shift cavity 301 may be provided with a slot, and the phase shift network 310 is matched with the slot on the adapter 322, so as to facilitate the welding and fixing of the phase shift network 310 and the adapter 322.

[0090] Please refer to Fig. 9 In some embodiments, the base station antenna device includes a column of radiation elements 200a. Of course, the base station antenna device may also include a plurality of columns of radiation elements 200a arranged at intervals along the second direction XX'.

[0091] Each radiation unit column 200a includes a plurality of radiation units 200 arranged in sequence along the 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 radiation unit columns 200a. The cavity structures 300 correspond to the radiation unit columns 200a one by one. The length direction of the cavity structure 300 is the column direction of the corresponding radiation unit column 200a.

[0092] Each transfer cavity is provided with a plurality of transfer structures 320 arranged in sequence along the third direction YY'. The plurality of transfer structures 320 in each transfer cavity correspond one-to-one to the plurality of radiation units 200 in the corresponding radiation unit column 200a. After the feeder 230 in the radiation unit 200 passes through the bottom of the avoidance cavity 302 and enters the transfer cavity, it is connected with the corresponding transfer structure 320.

[0093] Specifically, a plurality of first transfer structures 320a arranged in sequence along the third direction YY' are provided in the first transfer cavity 303a, and the plurality of first transfer structures 320a correspond one-to-one to the plurality of radiation units 200 in the corresponding radiation unit column 200a. A plurality of second transfer structures 320b arranged in sequence along the third direction YY' are provided in the second transfer cavity 303b, and the plurality of second transfer structures 320b correspond one-to-one to the plurality of radiation units 200 in the corresponding radiation unit column 200a. After the first feeder 230a in each radiation unit 200 passes through the bottom of the avoidance cavity 302 and enters the first transfer cavity 303a, it is connected to the corresponding first transfer structure 320a. After the second feeder 230b in each radiation unit 200 passes through the bottom of the avoidance cavity 302 and enters the second transfer cavity 303b, it is connected to the corresponding second transfer structure 320b.

[0094] Optionally, the connection method between the feeder 230 and the corresponding adapter structure 320 is welding. Therefore, the feeder 230 and the adapter structure 320 can be welded or desoldered in the adapter cavity. Since the connection position between the feeder 230 and the adapter structure 320 is located in the corresponding adapter cavity, all the adapter structures 320 and the corresponding feeders 230 in the same adapter cavity can be desoldered at the same time, and the desoldering will not affect the welding reliability of other welding points in the phase shift cavity 301, so that all the adapter structures 320 and the corresponding feeders 230 in the same adapter cavity can be quickly disconnected from each other, thereby improving maintenance efficiency.

[0095] Please refer to Figures 1 to 3 , Figures 5 to 7 In some embodiments, the two adapter cavities have openings on the sides facing away from each other along the second direction XX'. In this way, the multiple adapter structures 320 arranged along the third direction YY' can enter or move out of the corresponding adapter cavity through the corresponding openings, which is convenient for assembly or disassembly. Moreover, when connecting or disconnecting the adapter structure 320 with the corresponding feeder 230, the operation can be performed by entering the adapter cavity through the corresponding opening, thereby facilitating the operation.

[0096] Specifically, the first adapter cavity 303a has a first opening 3031 on a side facing away from the second adapter cavity 303b, and the second adapter cavity 303b has a second opening 3032 on a 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 placed in or removed from the first adapter cavity 303a through the first opening 3031, and the plurality of second adapter structures 320b arranged along the third direction YY' can be placed in or removed from the second adapter cavity 303b through the second opening 3032, thereby facilitating assembly or disassembly.

[0097] Moreover, when the first adapter structure 320a is connected or disconnected with the corresponding first feeder 230a, the first adapter cavity 303a can be entered through the first opening 3031 to perform the operation, thereby facilitating the operation. Similarly, when the second adapter structure 320b is connected or disconnected with the corresponding second feeder 230b, the second adapter cavity 303b can be entered through the second opening 3032 to perform the operation, thereby facilitating the operation.

[0098] Please refer to Figure 6 In some embodiments, the avoidance cavity 302 has a third opening 3021 at one end close to the reflector 100. The balun 220 extends into the avoidance cavity 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 avoidance cavity 302 through the third opening 3021.

[0099] In some embodiments, the balun 220 abuts against the bottom of the avoidance cavity 302. In other embodiments, there may be a gap between the balun 220 and the bottom of the avoidance cavity 302.

[0100] Please combine Figures 1 to 3 In one embodiment, the base station antenna device further includes a connecting component 400. The connecting component 400 includes a connecting portion 410 and a fastening portion 420. The connecting portion 410 is fixed to the outer wall of the balun 220 and is located on the side of the reflector 100 facing away from the cavity structure 300. The fastening portion 420 is sequentially penetrated through the connecting portion 410, the reflector 100 and the cavity wall of the cavity structure 300 to fix the connecting portion 410, the reflector 100 and the cavity wall of the cavity structure 300.

[0101] By providing a connection portion 410 on the outer wall of the balun 220, the connection portion 410 and the cavity structure 300 are respectively located on both sides of the reflector 100, so that the fastening portion 420 can pass through the connection portion 410, the reflector 100 and the cavity wall of the cavity structure 300 in sequence to fix the three, that is, 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 accommodating the phase shift network 310 can be fixed to the reflector 100 at the same time through one operation, saving the assembly process. Moreover, since the radiation unit 200 and the cavity structure 300 can be fixed to the reflector 100 by sharing the fastening portion 420, the number of fastening portions 420 is saved.

[0102] refer to Fig.10 , the connecting portion 410 is provided with a first connecting hole 411. Figure 2 , the reflector 100 is provided with a second connection hole 101. The cavity wall of the cavity structure 300 close to one end of the reflector 100 is provided with a third connection hole. The fastening portion 420 sequentially penetrates the first connection hole 411, the second connection hole 101 and the third connection hole, thereby fixing the connection portion 410, the reflector 100 and the cavity wall of the cavity structure 300.

[0103] In some embodiments, in some embodiments, a threaded hole (i.e., a third connection hole) is provided on the cavity wall of the cavity structure 300 near one end of the reflector 100. The fastening portion 420 includes a rod and a head, and the head is connected to one end of the rod. The end of the rod away from the head passes through the connecting portion and the reflector 100 in sequence, and is threadedly connected to the threaded hole.

[0104] Specifically, the end of the rod away from the head can pass through the first connection hole 411 and the second connection hole 101 in sequence. The third connection hole is a threaded hole, so the rod is screwed into the third connection hole until the head abuts against the side of the connection part 410 facing away from the reflector 100, and then the connection part 410, the reflector 100 and the cavity wall of the cavity structure 300 can be fixed.

[0105] The connection part 410 abuts against the reflection plate 100 , and the cavity structure 300 abuts against the reflection plate 100 , which is conducive to reliable fixation of the connection part 410 , the reflection plate 100 and the cavity wall of the cavity structure 300 .

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

[0107] In some embodiments, the connection portion 410 and the balun 220 are an integrally formed structure, and the connection portion 410 can be formed simultaneously when the balun 220 is processed, which facilitates processing, and the connection between the connection portion 410 and the balun 220 is reliable.

[0108] Please combine Fig.10 and Fig.11In some embodiments, a first virtual axis along a first direction ZZ' is defined, and a second virtual axis along a third direction YY' is defined. The third direction YY' is perpendicular to the first direction ZZ' and to the second direction XX', and the first virtual axis is perpendicular to the second virtual axis. The first virtual axis intersects with the second virtual axis, thereby being able to divide four quadrants. There are four radiation arms 210 in total for the two pairs of radiation arms 210. The four radiation arms 210 are located in the four quadrants one by one. In the orthogonal dual-polarization radiation unit, one pair of diagonally arranged radiation arms 210 (respectively located in the first quadrant and the third quadrant) is 45° polarized, and the other pair of diagonally arranged radiation arms 210 (respectively located in the second quadrant and the fourth quadrant) is -45° polarized, so that the two pairs of radiation arms 210 constitute orthogonal polarization.

[0109] Two radiating arms 210 adjacent to each other along the third direction YY' are provided with avoidance grooves opposite to each other on their sides, and the two avoidance grooves opposite to each other are combined to form an avoidance hole 211. The avoidance holes 211 are arranged in a one-to-one correspondence with the fastening parts 420. The fastening parts 420 are located within the projection range of the contour of the corresponding avoidance hole 211 on the reflector 100, and the avoidance hole 211 is used for an operating tool for operating the fastening parts 420 to pass through.

[0110] Specifically, two adjacent radiation arms 210 along the third direction YY' are defined as first radiation arms 210a and second radiation arms 210b. In this embodiment, since the four radiation arms 210 are located in four quadrants, there are two columns of adjacent first radiation arms 210a and second radiation arms 210b along the third direction YY'.

[0111] In two adjacent radiation arms 210 in the third direction YY′, a first avoidance groove 211a is provided on a side of the first radiation arm 210a close to the second radiation arm 210b, and a second avoidance groove 211b is provided on a side of the second radiation arm 210b close to the first radiation arm 210a. The first avoidance groove 211a and the second avoidance groove 211b together form a avoidance hole 211.

[0112] Since the fastening portion 420 is located within the projection range of the contour of the corresponding avoidance hole 211 on the reflecting plate 100, the position of the fastening portion 420 and the corresponding avoidance hole 211 corresponds to each other along the first direction ZZ', so that the fastening portion 420 can be operated after the operating tool passes through the avoidance hole 211, making it convenient to pass the fastening portion 420 through the connecting portion 410, the reflecting plate 100 and the cavity wall of the cavity structure 300.

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

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

[0115] Among the two groups of connection components 400, one group of connection components 400 is arranged on a side of the first balun 220a away from the second balun 220b along the second direction XX', and the other group of connection components 400 is arranged on a side of the second balun 220b away from the first balun 220a along the second direction XX'. In this way, two groups of connection components 400 can be arranged in this embodiment, so that the radiation unit 200, the reflection plate 100, and the cavity structure 300 are reliably connected.

[0116] Please refer to Fig.12 and Fig.13 In some other embodiments, the radiation arm 210 is provided with a hollow region 212 penetrating along the first direction ZZ′. The fastening portion 420 is located within the projection range of the outline of the corresponding hollow region 212 on the reflector 100 .

[0117] Since the outline of the corresponding hollow area 212 is within the projection range on the reflective plate 100, the position of the fastening portion 420 corresponds to the corresponding hollow area 212 along the first direction ZZ', so that the fastening portion 420 can be operated after the operating tool passes through the hollow area 212, making it convenient to pass the fastening portion 420 through the connecting portion 410, the reflective plate 100 and the cavity wall of the cavity structure 300.

[0118] In this embodiment, by disposing the fastening portion 420 within the projection range of the outline of the corresponding hollow area 212 , the fastening portion 420 can be operated by means of the hollow area 212 on the radiation arm 210 itself, without the need to specially provide the avoidance hole 211 .

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

[0120] Among the two groups of connection components 400, one group of connection components 400 is connected to the first balun 220a, and the other group of connection components 400 is connected to the second balun 220b. By making the arrangement direction of the two groups of connection components 400 and the second direction XX' have an included angle, the fastening parts 420 of the two groups of connection components 400 can be respectively located in the hollow areas 212 of two different radiation arms 210. In this embodiment, two groups of connection components 400 can be provided, so that the radiation unit 200, the reflection plate 100, and the cavity structure 300 are reliably connected.

[0121] Optionally, the angle between the arrangement direction of the two groups of connection components 400 and the second direction XX' is 45°. In this way, the positions of the first connection holes 411 and the fastening parts 420 can be as close as possible to the center of the projection range of the corresponding hollow area 212, which is convenient for operation.

[0122] Optionally, the two groups of connection components 400 correspond to the positions of the two radiation arms 210 in the first quadrant and the third quadrant, that is, the fastening portions 420 of the two groups of connection components 400 correspond to the hollow areas 212 of the two radiation arms 210 in the first quadrant and the third quadrant respectively.

[0123] The direction of the end of the connecting portion 410 facing away from the corresponding balun 220 is inclined to the second direction XX'. Optionally, the inclination angle of the direction of the end of the connecting portion 410 facing away from the corresponding balun 220 relative to the second direction XX' is 45 degrees. In this way, the positions of the first connecting hole 411 and the fastening portion 420 can be as close as possible to the center area of ​​the corresponding hollow area 212, which is convenient for operation.

[0124] In another embodiment, the number of the connection components 400 may also be four groups. Two groups of the connection components 400 are connected to the first balun 220a, and the other two groups of the connection components 400 are connected to the second balun 220b. The four groups of the connection components 400 have a total of four fastening portions 420. The four fastening portions 420 correspond to the hollow areas 212 of the four radiation arms 210 one by one, so that the four fastening portions 420 can be operated through the four hollow areas 212 respectively.

[0125] In one embodiment, 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 switching cavity and a phase shift cavity group adjacent to each other along the first direction ZZ'. Fig.14Specifically, the first cavity module includes a first transition cavity 303a and a first phase-shift cavity group 301a adjacent to each other along the first direction ZZ'. The second cavity module includes a second transition cavity 303b and a second phase-shift cavity group 301b adjacent to each other along the first direction ZZ'. A partition wall 330 is provided between the transition cavity and the phase-shift cavity 301 of the corresponding phase-shift cavity group. The partition wall 330 separates the transition cavity and the phase-shift cavity 301 of the corresponding phase-shift cavity group.

[0126] The combining network 321 has a first signal line 611, and the first signal line 611 includes a first main section 6111 and a first bending section 6112. The first main section 6111 is parallel to the partition wall 330. One end of the first bending section 6112 is connected to one end of the first main section 6111, and the first bending section 6112 is bent toward the partition wall 330 compared to the first main section 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 bending section 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 bending section 6112 is bent toward the partition wall 330 compared to the first main section 6111, the first bending section 6112 can be closer to the partition wall 330 than the first main section 6111. In this way, the first signal line 611 can be closer to the second signal line 621 through the first bending section 6112, shortening the distance between the first signal line 611 and the second signal line 621 (compared to the first signal line without the first bending section), and shortening the connection distance of the adapter 322, thereby reducing the discontinuity of the signal when it is transmitted between the first signal line 611 (combining network 321) and the second signal line 621 (phase shifting network 310) in two different cavities, thereby improving the signal transmission effect.

[0129] Optionally, the combining network 321 is a sheet metal network, and the phase shifting network 310 is a sheet metal network.

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

[0131] Please refer to Fig.14In some embodiments, the first bending section 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 is bent toward the partition wall 330 compared to the first main body segment 6111. One end of the second bending segment 6112b is connected to one 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.

[0132] The first bending segment 6112a is bent toward the partition wall 330, thereby shortening the distance between the first signal line 611 and the first signal line 612. Meanwhile, the second bending segment 6112b is parallel to the partition wall 330, thereby facilitating the connection between the adapter 322 and the second bending segment 6112b, that is, the connection between the adapter 322 and the first signal line 611.

[0133] It can be understood that the extension direction of the adapter 322 is along the first direction ZZ', and the first direction ZZ' is along the thickness direction of the partition wall 330. The adapter 322 is arranged in the partition wall along the first direction ZZ'. Since the second bending segment 6112b is parallel to the partition wall 330, the second bending segment 6112b is perpendicular to the extension direction of the adapter 322, so that the two are conveniently connected.

[0134] In one embodiment, the switching cavity and the phase shift cavity 301 both have a length direction, a width direction and a thickness direction, and the length, width and thickness of the switching cavity decrease in sequence, and the length, width and thickness of the phase shift cavity 301 decrease in sequence. The length directions of the switching cavity and the phase shift cavity 301 are the same, both along the third direction.

[0135] Please refer to Fig.13 The width direction of the phase shift cavity 301 is along the first direction ZZ', the width direction of the switching 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'.

[0136] Please refer to Fig.13 In one 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 body section 6211 and a second bending section 6212, and one end of the second bending section 6212 is connected to one end of the second main body section 6211. The second bending section 6212 is bent compared to the second main body section 6211, and the second bending section 6212 is parallel to the partition wall 330.

[0137] The extension direction of the second main body section 6211 can be along the width direction of the phase shift cavity 301, that is, the first direction ZZ'. By bending the second bending section 6212 compared to the second main body section 6211, the second bending section 6212 is parallel to the partition wall 330, which facilitates the connection between the adapter 322 and the second bending section 6212, that is, the connection between the adapter 322 and the second signal line 621.

[0138] The adapter 322 is disposed 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 extension direction of the adapter 322, thereby facilitating the connection between the two.

[0139] Figures 15 to 18 Four exploded views of the connection structures of the adapter 322 , the corresponding second signal line 621 of the phase shift network 310 , and the corresponding first signal line 611 of the combiner network 321 in different embodiments are provided.

[0140] The second signal line 621 of the first phase shift network 310a, the corresponding first signal line 611 of the combining network 321 and the corresponding adapter 322 can be implemented as follows: Fig.16 or Fig.18 The embodiment shown.

[0141] The second signal line 621 of the second phase shift network 310c, the corresponding first signal line 611 of the combining network 321 and the corresponding adapter 322 can be implemented as follows: Fig.15 or Fig.17 The embodiment shown.

[0142] The implementation of the second signal line 621 of the third phase shift network 310b, the corresponding first signal line 611 of the combining network 321 and the corresponding adapter 322 can be adopted as follows: Fig.16 or Fig.18 The embodiment shown.

[0143] The second signal line 621 of the second phase shift network 310d, the corresponding first signal line 611 of the combining network 321 and the corresponding adapter 322 can be implemented as follows: Fig.15 or Fig.17 The embodiment shown.

[0144] Please combine Figures 15 to 18 In some embodiments, the end of the adapter 322 located in the phase shift 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 is mated with the first positioning groove 601, so as to facilitate welding the first mating end and the first connection end.

[0145] Specifically in Fig.15 In the illustrated embodiment, the second signal line 621 extends in the first direction ZZ', the first main body section 6111 extends in the third direction YY', and the second bent segment 6112b extends in 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 groove sunken in the first direction ZZ'. The first connecting end of the adapter 322 is provided with a positioning boss 631, and the protruding direction of the positioning boss 631 is along the second direction XX'. The positioning boss 631 is matched with the first positioning groove 601.

[0146] exist Fig.16 In the illustrated embodiment, the second signal line 621 includes a second main body section 6211 and a second bend section 6212. The second main body section 6211 extends in the first direction ZZ', and the second bend section 6212 extends in the second direction XX'. The first main body section 6111 extends in the second direction XX', and the second bend section 6112b extends in the second direction XX'. The first mating end of the second signal line 621 is an end of the second bend section 6212 away from the second main body section 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 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.

[0147] exist Fig.17 In the illustrated embodiment, the second signal line 621 includes a second main body section 6211 and a second bend section 6212. The second main body section 6211 extends in a first direction ZZ', and the second bend section 6212 extends in a second direction XX'. The first main body section 6111 extends in a third direction YY', and the second bend section 6112b extends in the third direction YY'. The first mating end of the second signal line 621 is an end of the second bend section 6212 away from the second main body section 6211, and the first mating end is provided with a first positioning groove 601. The first connection end of the adapter 322 is mated with the first positioning groove 601.

[0148] exist Fig.18In the illustrated embodiment, the second signal line 621 includes a second main body section 6211 and a second bend section 6212. The second main body section 6211 extends in the first direction ZZ', and the second bend section 6212 extends in the second direction XX'. The first main body section 6111 extends in the second direction XX', and the second bend section 6112b extends in the second direction XX'. The first mating end of the second signal line 621 is an end of the second bend section 6212 away from the second main body section 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 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 Fig.16 In some embodiments, one end of the adapter 322 located in the adapter cavity is the second connection end, and one 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 is mated with the second positioning groove 602, so as to facilitate welding the second mating end and the second connection end.

[0150] exist Fig.16 In the illustrated embodiment, the first main body section 6111 extends in the second direction XX', and the second bending segment 6112b extends in the second direction XX'. The second mating end of the first signal line 611 is the second bending 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 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 Fig.15 , Fig.17 and Fig.18 In some embodiments, the second bending segment 6112b is provided with a second positioning groove 602. The adapter 322 is inserted into the second positioning groove 602 along the first direction ZZ'. The first direction ZZ' is along the thickness direction of the partition wall. The adapter 322 is located at one end of the adapter cavity and 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 means that the adapter 322 is assembled in place along the first direction ZZ', which is convenient for positioning the adapter 322 and for welding the adapter 322 and the second bending segment 6112b.

[0152] exist Fig.15 , Fig.17 , Fig.18In the illustrated embodiment, 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'.

[0153] exist Fig.15 and Fig.17 In the illustrated embodiment, the first main section 6111 extends in the third direction YY', the second bending section 6112b extends in the third direction YY', and the second positioning groove 602 is provided in the second bending section 6112b.

[0154] exist Fig.18 In the illustrated embodiment, the first main section 6111 extends in the second direction XX′, the second bending section 6112b extends in the second direction XX′, and the second positioning groove 602 is provided in the second bending section 6112b.

[0155] An embodiment of the present application further provides a base station, comprising an antenna cover and the base station antenna device of any one of the above embodiments, wherein the antenna cover is connected to the reflector 100 and is covered outside the radiation unit 200.

[0156] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0157] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A base station antenna device, characterized in that: include: Reflector, radiation unit and cavity structure; The radiation unit comprises two pairs of orthogonally polarized radiation arms, two baluns and two feeding elements, one end of the balun is connected to the radiation arm, the two feeding elements are arranged in a one-to-one correspondence through the two baluns, and the balun is fixedly connected to the reflection plate; 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 comprises two layers of cavities separated along the first direction, wherein one layer of cavities is provided with two groups of phase-shifting cavities arranged along the second direction and a position-avoiding cavity located between the two groups of phase-shifting cavities, the second direction is perpendicular to the first direction, and phase-shifting networks are respectively provided in the two groups of phase-shifting cavities; the other layer of cavities is provided with two switching cavities separated along the second direction, and switching structures are respectively provided in the two switching cavities; One end of the balun away from the radiation arm passes through the reflection plate and extends into the avoidance cavity; One end of the two feeders is inserted into the two switching cavities one by one correspondingly, and one end of the feeders is connected to the switching structure; The two switching cavities correspond to the two phase-shifting cavity groups one by one, and the switching structure in the switching 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: The two adapter cavities have openings at sides facing away from each other along the second direction.

3. The base station antenna device according to claim 1, characterized in that: Each phase-shifting cavity group comprises 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 working frequency bands of the phase-shifting networks in the phase-shifting cavities in the same phase-shifting cavity group are different from each other; The switching structure includes a combining network, one end of the feeding element is connected to the combining network, and the phase shifting networks in each phase shifting cavity in the same phase shifting cavity group are respectively connected to the combining network in the corresponding switching cavity.

4. The base station antenna device according to claim 3, characterized in that: The switching structure further includes a switching element arranged corresponding to the phase shift cavity, one end of the switching element is located in the switching cavity and connected to the combining network, and the other end of the switching element extends into the corresponding phase shift cavity and connected to the phase shift network.

5. The base station antenna device according to claim 1, characterized in that: The number of the phase-shifting cavity in each phase-shifting cavity group is one.

6. The base station antenna device according to claim 1, characterized in that: The base station antenna device comprises one column of radiation units or multiple columns of radiation units arranged at intervals along the second direction; each column of the radiation units comprises a plurality of the radiation units arranged in sequence along a third direction, and the third direction is perpendicular to the first direction and the second direction; the number of the cavity structures is the same as the number of the radiation unit columns, and the cavity structures correspond to the radiation unit columns one by one; Each of the transfer cavities is provided with a plurality of the transfer structures arranged in sequence along the third direction; The multiple adapter structures in each adapter cavity correspond one-to-one to the multiple radiation units in the corresponding radiation unit column.

7. The base station antenna device according to claim 1, characterized in that: One end of the avoidance cavity close to the reflection plate has an opening; the balun extends into the avoidance cavity through the opening.

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

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

10. The base station antenna device according to claim 1, characterized in that: The base station antenna device further includes a connecting component, the connecting component includes a connecting portion and a fastening portion, the connecting portion is fixed to the outer wall of the balun and is located on the side of the reflector facing away from the cavity structure; a threaded hole is provided on the cavity wall of the cavity structure at one end close to the reflector; The fastening part includes a rod and a head connected to the rod; one end of the rod away from the head passes through the connecting part and the reflecting plate in sequence and is threadedly matched with the threaded hole, so that the head abuts against the side of the connecting part facing away from the reflecting plate.

11. The base station antenna device according to claim 10, characterized in that: A first virtual axis along the first direction is defined, and a second virtual axis along the third direction is defined, wherein the first virtual axis intersects with the second virtual axis to divide four quadrants, and the four radiating 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; Avoidance grooves opposite to each other are respectively provided on the sides of two adjacent radiation arms along the third direction, and the two avoidance grooves opposite to each other are combined to form a avoidance hole; the avoidance holes are arranged in a one-to-one correspondence with the fastening parts; the fastening parts are located within the projection range of the contour of the corresponding avoidance hole on the reflecting plate.

12. The base station antenna device according to claim 10, characterized in that: The radiation arm is provided with a hollow area penetrating along the first direction; the fastening portion is located within the projection range of the outline of the corresponding hollow area on the reflection plate.

13. A base station, characterized in that: The base station antenna device comprises an antenna cover and any one of claims 1 to 12, wherein the antenna cover is connected to the reflection plate and is arranged outside the radiation unit.

Images