Base station antenna and communication device

Abstract

The embodiment of the invention provides a base station antenna and communication equipment. The base station antenna comprises at least one antenna array, and the at least one antenna array comprises a strip line and at least one radiation unit. The stripline includes a stripline inner conductor and a cavity for accommodating the stripline inner conductor. The at least one radiation unit is fixedly connected to the outer surface of the cavity. The cavity in the at least one antenna array is used for receiving the driving force output by the driving part, and when the cavity receives the driving force, the antenna array corresponding to the cavity rotates around a rotating axis parallel to the length direction of the strip line. According to the base station antenna and the communication equipment provided by the embodiment of the invention, the azimuth angle of the antenna array can be flexibly adjusted, and the use requirements are met.

Description

Technical Field

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

[0002] The electromagnetic signal coverage area in mobile communications is achieved by installing a base station antenna at the base station and allowing the base station antenna's beam to cover this area. When the geographical features and user distribution of this area change, the beam radiation direction of the base station antenna needs to be adjusted so that the electromagnetic signal can re-cover the changed area. In related technologies, a mechanical device is set on the mounting bracket that carries the base station antenna to drive the entire base station antenna to perform mechanical horizontal rotation, thereby changing the physical position of the entire base station antenna, and then changing the azimuth of the entire base station antenna. Summary of the invention

[0003] The embodiments of the present application provide a base station antenna and a communication device, which can flexibly adjust the azimuth angle of the antenna array to meet usage requirements.

[0004] According to a first aspect of the present application, there is provided a base station antenna, comprising at least one antenna array, wherein at least one of the antenna arrays comprises a strip line and at least one radiating unit; the strip line comprises an inner conductor of the strip line and a cavity for accommodating the inner conductor of the strip line; the at least one radiating unit is fixedly connected to the outer surface of the cavity; the cavity in at least one of the antenna arrays is used to receive a driving force output by a driving member, and when the cavity receives the driving force, the antenna array corresponding to the cavity rotates around a rotation axis parallel to the length direction of the strip line.

[0005] In the base station antenna provided in the embodiment of the present application, by allowing the cavity of at least one antenna array to receive the driving force output by the driving component, a single antenna array can be rotated around the rotation axis independently, and the azimuth angle of a single antenna array can be adjusted independently, which can meet the usage requirements.

[0006] In a possible embodiment, at least one of the radiation units includes a radiation portion for electrically connecting to the conductor inside the stripline and the cavity, respectively, and the radiation portion includes a plurality of layer structures arranged side by side and at intervals along a first direction, and the plurality of layer structures are used to directionally radiate electromagnetic signals along the first direction away from the stripline; wherein the first direction intersects with and does not overlap with the length direction of the stripline.

[0007] The radiating part of the radiating unit in the base station antenna provided in the embodiment of the present application is composed of a plurality of layer structures, which can not only radiate the electromagnetic signal directionally to the corresponding area along the first direction, but also reduce the weight of the base station antenna to achieve a lightweight design.

[0008] In a possible embodiment, at least one of the antenna arrays includes a plurality of the radiating units, wherein: in the same antenna array, the plurality of the radiating units are arranged side by side and at intervals along the length direction of the strip line; or, in the same antenna array, along the length direction of the strip line, the plurality of the radiating units are arranged side by side, and two adjacent layer structures are an integral structure, and the two adjacent layer structures respectively belong to two adjacent radiating units of at least two of the radiating units.

[0009] Any two radiating parts in the same antenna array of the base station antenna provided in the embodiment of the present application do not share the same layer structure or at least some of the radiating parts share the same layer structure, and can radiate electromagnetic signals to the corresponding area to meet the use requirements. However, when the radiating parts of at least two radiating units in the same antenna array are independent of each other, the weight of the base station antenna can be further reduced to achieve an extremely lightweight design.

[0010] In a possible embodiment, at least one of the radiation units further includes a feeding part, a first end of the feeding part is fixedly connected to the outer surface of the cavity, and the radiation part is fixedly connected to the second end of the feeding part and is electrically connected to the stripline inner conductor and the cavity respectively through the feeding part.

[0011] The radiating part in the base station antenna provided in the embodiment of the present application is connected to the strip line through the feeding part, which can not only fix the radiating part to the outer surface of the cavity to simplify the structure of the antenna array, but also realize the electrical connection between the radiating part and the conductor inside the cavity and the strip line respectively, thereby reducing the loss.

[0012] In a possible implementation, the feeding portion includes a feeding inner core and a feeding outer conductor, the first end of the feeding outer conductor is fixedly connected to the outer surface of the cavity and is electrically connected to the cavity, the radiating portion is connected to the second end of the feeding outer conductor and is electrically connected to the feeding outer conductor, and the radiating portion is electrically connected to the stripline inner conductor through the feeding inner core.

[0013] The feeding part in the base station antenna provided in the embodiment of the present application is composed of a feeding outer conductor and a feeding inner core, which can not only fix the radiating part to the outer surface of the cavity, but also electrically connect the radiating part to the strip line inner conductor and the cavity respectively, thereby realizing a low-loss design.

[0014] In a possible embodiment, the cavity in at least one of the antenna arrays includes a plurality of accommodating cavity segments extending along the length direction of the strip line, wherein: in the same cavity, along the length direction of the strip line, the radial cross-section areas of at least two of the accommodating cavity segments are different; wherein the radial cross-section of the accommodating cavity segment is perpendicular to the length direction of the strip line.

[0015] The base station antenna provided in the embodiment of the present application is composed of at least two accommodating cavity sections with different radial cross-sectional areas, so that the weight of the cavity is reduced, thereby reducing the weight of the antenna array, and further reducing the weight of the base station antenna.

[0016] In a possible embodiment, the cavity in at least one of the antenna arrays is used to define at least one accommodating cavity, and the strip line of the at least one antenna array includes at least one strip line inner conductor, wherein: in the same antenna array, the at least one accommodating cavity corresponds one-to-one to the at least one strip line inner conductor, and the strip line inner conductor is arranged inside the corresponding accommodating cavity; when the cavity defines a plurality of accommodating cavities, the plurality of accommodating cavities are arranged side by side along a direction perpendicular to the length direction of the strip line, and two adjacent accommodating cavities share a side wall.

[0017] The cavity in the base station antenna provided in the embodiment of the present application defines a receiving cavity corresponding one-to-one to at least one strip line inner conductor, so that the strip line can be electrically connected to a radiation unit having at least one polarization direction.

[0018] In a possible embodiment, the strip line of at least one of the antenna arrays further includes at least one movable part, and the at least one movable part corresponds one-to-one to the at least one accommodating cavity, and each of the movable parts is arranged inside the corresponding accommodating cavity, wherein: the movable part includes a dielectric part for sliding along the length direction of the strip line relative to the conductor inside the strip line; or, the movable part includes a metal part for sliding along the length direction of the strip line part and for coupling and connecting with the conductor inside the strip line.

[0019] The base station antenna provided in the embodiment of the present application is provided with a movable part that moves along the length direction of the strip line in the accommodating cavity. When the movable part is located at different positions in the accommodating cavity along the length direction of the strip line, the phase of the electromagnetic signal radiated by the radiating unit can be changed, thereby changing the maximum direction of the electromagnetic signal radiated by the radiating unit, and then the downtilt angle of the antenna array can be adjusted.

[0020] In a possible implementation, the radiation unit is a single-polarization radiation unit or a dual-polarization radiation unit, wherein: when the radiation unit is the single-polarization radiation unit, the single-polarization radiation unit is used to be electrically connected to the cavity and one of the stripline inner conductors respectively; or, when the radiation unit is the dual-polarization radiation unit, the dual-polarization radiation unit is used to be electrically connected to the cavity and two of the stripline inner conductors respectively.

[0021] In a possible implementation, the base station antenna includes a plurality of antenna arrays, the rotation axes of any two of the antenna arrays are parallel to each other, and the rotation directions of at least two of the antenna arrays are the same.

[0022] The rotation directions of at least two antenna arrays in the base station antenna provided in the embodiment of the present application are the same, which can ensure that a single antenna array meets the corresponding usage requirements.

[0023] In a possible implementation, the base station antenna includes a plurality of antenna arrays, wherein: at least two of the antenna arrays rotate simultaneously; or, the plurality of antenna arrays do not rotate simultaneously.

[0024] The multiple antenna arrays in the base station antenna provided in the embodiment of the present application do not rotate at the same time or at least two antenna arrays rotate at the same time, and the azimuth angle of the corresponding antenna array can be adjusted according to usage requirements.

[0025] In a possible implementation, the base station antenna includes a plurality of antenna arrays, wherein: at least two of the antenna arrays have different operating frequency bands; or, the plurality of antenna arrays have the same operating frequency bands.

[0026] The working frequency bands of the multiple antenna arrays in the base station antenna provided in the embodiment of the present application are the same, or the working frequency bands of at least two antenna arrays are different, which can meet the user's usage requirements.

[0027] In a possible implementation, the base station antenna further includes a plurality of first transmission members, the plurality of first transmission members corresponding one-to-one to the plurality of antenna arrays, and the first transmission members are used to transmission-connect the driving member and the corresponding cavity of the antenna array.

[0028] The base station antenna provided in the embodiment of the present application transmits the driving force output by the driving member to multiple antenna arrays through the first transmission member, which can not only enable at least one antenna array to rotate individually to adjust the azimuth angle of a single antenna array, but also control when a single antenna array rotates to meet usage requirements.

[0029] In a possible implementation, the base station antenna further includes a driving member, which is drivingly connected to the cavity of at least one of the antenna arrays, and the driving member is used to drive the at least one antenna array to rotate around the rotation axis.

[0030] In a possible implementation, the base station antenna includes a plurality of antenna arrays, and the plurality of antenna arrays are arranged side by side and at intervals along a second direction, and the second direction intersects and does not overlap with any one of the first direction and the length direction of the strip line.

[0031] According to a second aspect of the present application, there is provided a base station antenna, comprising at least one antenna array, at least one of the antenna arrays comprising a strip line and at least one radiating unit; the at least one radiating unit is fixedly connected to the outer surface of the strip line; at least one of the radiating units comprises a radiating portion electrically connected to the strip line, the radiating portion comprises a plurality of layer structures arranged side by side and at intervals along a first direction, the plurality of layer structures being used to directionally radiate electromagnetic signals along the first direction away from the strip line; wherein the first direction intersects with and does not overlap with the length direction of the strip line.

[0032] The radiating part of the radiating unit of the base station antenna provided in the embodiment of the present application is composed of multiple layer structures, so that after the radiating part receives the electromagnetic signal transmitted by the strip line, it can be radiated to the corresponding area in a direction. In other words, the electromagnetic signal radiated by the radiating part will not contact the strip line. Therefore, by adopting a radiating part composed of multiple layer structures to radiate electromagnetic signals, there is no need to separately set a reflector in the base station antenna, thereby reducing the weight of the base station antenna, and further achieving a lightweight design.

[0033] In a possible implementation, the stripline includes a cavity and a stripline inner conductor disposed inside the cavity and extending along the length direction of the stripline; in the same antenna array, at least one of the radiating units is connected to the outer surface of the cavity, and the radiating part of at least one of the radiating units is electrically connected to the cavity and the stripline inner conductor, respectively.

[0034] The radiating part of the radiating unit in the base station antenna provided in the embodiment of the present application is electrically connected to the conductor inside the strip line and the cavity respectively, which can reduce the loss and ensure the antenna performance.

[0035] In a possible embodiment, at least one of the antenna arrays includes a plurality of the radiating units, wherein: in the same antenna array, the plurality of the radiating units are arranged side by side and at intervals along the length direction of the strip line; or, in the same antenna array, along the length direction of the strip line, the plurality of the radiating units are arranged side by side, and two adjacent layer structures are an integral structure, and the two adjacent layer structures respectively belong to two adjacent radiating units of at least two of the radiating units.

[0036] Any two radiating parts in the same antenna array of the base station antenna provided in the embodiment of the present application do not share the same layer structure or at least part of the radiating parts share the same layer structure, and can radiate electromagnetic signals to the corresponding area to meet the use requirements. However, when the radiating parts of at least two radiating units in the same antenna array are independent of each other, the weight of the base station antenna can be further reduced to achieve an extremely lightweight design.

[0037] In a possible embodiment, the cavity of at least one of the antenna arrays is used to receive the driving force output by the driving member, wherein: when the cavity receives the driving force, the antenna array corresponding to the cavity rotates around a rotation axis parallel to the length direction of the strip line.

[0038] The base station antenna provided in the embodiment of the present application receives the driving force output by the driving member through the cavity, so that a single antenna array can rotate individually, thereby adjusting the azimuth angle of the single antenna array to meet the usage requirements.

[0039] In a possible embodiment, at least one of the radiation units further includes a feeding part, a first end of the feeding part is fixedly connected to the outer surface of the cavity, and the radiation part is fixedly connected to the second end of the feeding part and is electrically connected to the stripline inner conductor and the cavity respectively through the feeding part.

[0040] The radiating part in the base station antenna provided in the embodiment of the present application is connected to the strip line through the feeding part, which can not only fix the radiating part to the outer surface of the cavity to simplify the structure of the antenna array, but also realize the electrical connection between the radiating part and the conductor inside the cavity and the strip line respectively, thereby reducing the loss.

[0041] In a possible implementation, the feeding portion includes a feeding inner core and a feeding outer conductor, the first end of the feeding outer conductor is fixedly connected to the outer surface of the cavity and is electrically connected to the cavity, the radiating portion is connected to the second end of the feeding outer conductor and is electrically connected to the feeding outer conductor, and the radiating portion is electrically connected to the stripline inner conductor through the feeding inner core.

[0042] The feeding part in the base station antenna provided in the embodiment of the present application is composed of a feeding outer conductor and a feeding inner core, which can not only fix the radiating part to the outer surface of the cavity, but also electrically connect the radiating part to the strip line inner conductor and the cavity respectively, thereby realizing a low-loss design.

[0043] In a possible embodiment, the cavity in at least one of the antenna arrays includes a plurality of accommodating cavity segments extending along the length direction of the strip line, wherein: in the same cavity, along the length direction of the strip line, the radial cross-section areas of at least two of the accommodating cavity segments are different; wherein the radial cross-section of the accommodating cavity segment is perpendicular to the length direction of the strip line.

[0044] The base station antenna provided in the embodiment of the present application is composed of at least two accommodating cavity sections with different radial cross-sectional areas, so that the weight of the cavity is reduced, thereby reducing the weight of the antenna array, and further reducing the weight of the base station antenna.

[0045] In a possible embodiment, the cavity in at least one of the antenna arrays is used to define at least one accommodating cavity, and the strip line of the at least one antenna array includes at least one strip line inner conductor, wherein: in the same antenna array, the at least one accommodating cavity corresponds one-to-one to the at least one strip line inner conductor, and the strip line inner conductor is arranged inside the corresponding accommodating cavity; when the cavity defines a plurality of accommodating cavities, the plurality of accommodating cavities are arranged side by side along a direction perpendicular to the length direction of the strip line, and two adjacent accommodating cavities share a side wall.

[0046] The cavity in the base station antenna provided in the embodiment of the present application defines a receiving cavity corresponding one-to-one to at least one strip line inner conductor, so that the strip line can be electrically connected to a radiation unit having at least one polarization direction.

[0047] In a possible embodiment, the strip line of at least one of the antenna arrays further includes at least one movable part, and the at least one movable part corresponds one-to-one to the at least one accommodating cavity, and each of the movable parts is arranged inside the corresponding accommodating cavity, wherein: the movable part includes a dielectric part for sliding along the length direction of the strip line relative to the conductor inside the strip line; or, the movable part includes a metal part for sliding along the length direction of the strip line part and for coupling and connecting with the conductor inside the strip line.

[0048] The base station antenna provided in the embodiment of the present application is provided with a movable part that moves along the length direction of the strip line in the accommodating cavity. When the movable part is located at different positions in the accommodating cavity along the length direction of the strip line, the phase of the electromagnetic signal radiated by the radiating unit can be changed, thereby changing the maximum direction of the electromagnetic signal radiated by the radiating unit, and then the downtilt angle of the antenna array can be adjusted.

[0049] In a possible implementation, the radiation unit is a single-polarization radiation unit or a dual-polarization radiation unit, wherein: when the radiation unit is the single-polarization radiation unit, the single-polarization radiation unit is used to be electrically connected to the cavity and one of the stripline inner conductors respectively; or, when the radiation unit is the dual-polarization radiation unit, the dual-polarization radiation unit is used to be electrically connected to the cavity and two of the stripline inner conductors respectively.

[0050] In a possible implementation, the base station antenna includes a plurality of antenna arrays, the rotation axes of any two of the antenna arrays are parallel to each other, and the rotation directions of at least two of the antenna arrays are the same.

[0051] In a possible implementation, the base station antenna includes a plurality of antenna arrays, wherein: at least two of the antenna arrays rotate simultaneously; or, the plurality of antenna arrays do not rotate simultaneously.

[0052] In a possible implementation, the base station antenna includes a plurality of antenna arrays, wherein: at least two of the antenna arrays have different operating frequency bands; or, the plurality of antenna arrays have the same operating frequency bands.

[0053] In a possible implementation, the base station antenna further includes a plurality of first transmission members, the plurality of first transmission members corresponding one-to-one to the plurality of antenna arrays, and the first transmission members are used to transmission-connect the driving member and the corresponding cavity of the antenna array.

[0054] The base station antenna provided in the embodiment of the present application transmits the driving force output by the driving member to multiple antenna arrays through the first transmission member, which can not only enable at least two antenna arrays to rotate individually to adjust the azimuth angle of a single antenna array, but also control when a single antenna array rotates to meet usage requirements.

[0055] In a possible implementation, the base station antenna further includes a driving member, which is drivingly connected to the cavity of at least one of the antenna arrays, and the driving member is used to drive the at least one antenna array to rotate around the rotation axis.

[0056] In a possible implementation, the base station antenna includes a plurality of antenna arrays, and the plurality of antenna arrays are arranged side by side and at intervals along a second direction, and the second direction intersects and does not overlap with any one of the first direction and the length direction of the strip line.

[0057] A third aspect of the present application provides a communication device, which includes the base station antenna as described in the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 It is a structural schematic diagram of a base station antenna in the related art;

[0059] Figure 2 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0060] Figure 3 A cross-sectional view of a first base station antenna provided in an embodiment of the present application;

[0061] Figure 4 A schematic diagram of a partial structure of a second base station antenna provided in an embodiment of the present application;

[0062] Figure 5 for Figure 4 A partial cross-sectional view of a single antenna array in cooperation with a driving member;

[0063] Figure 6 yes Figure 5A partial cross-sectional view of an antenna array in FIG.

[0064] Figure 7 A schematic structural diagram of a base station antenna with multiple operating frequency bands is provided for an embodiment of the present application;

[0065] Figure 8 The embodiment of the present application provides a method different from Figure 5 A schematic diagram of a second structure in which a driving member is drivingly connected to an antenna array;

[0066] Fig. 9 is a schematic diagram of a third structure of a driving member and a plurality of antenna arrays in transmission connection provided by an embodiment of the present application;

[0067] Fig.10 is a schematic diagram of a fourth structure of a driving member and a plurality of antenna arrays in transmission connection provided by an embodiment of the present application;

[0068] Fig.11 for Figure 5 A transverse cross-sectional view of a cavity in;

[0069] Fig.12 A transverse cross-sectional view of another cavity provided in an embodiment of the present application;

[0070] Fig.13 A schematic diagram of the structure of an antenna array of a third base station antenna provided in an embodiment of the present application;

[0071] Fig.14 Provide different from the embodiment of the present application Figure 5 The schematic diagram of the structure of the first antenna array shown;

[0072] Fig.15 Provide different from the embodiment of the present application Figure 5 A schematic diagram of the structure of the second antenna array shown;

[0073] Fig.16 Provide different from the embodiment of the present application Figure 5 The schematic diagram of the structure of the third antenna array is shown.

[0074] Description of reference numerals:

[0075] 100. Antenna array;

[0076] 10. Stripline; 11. Conductor inside the stripline; 12. Cavity; 121. Accommodating cavity; 122. Cavity segment; 13. Movable part;

[0077] 20. radiating unit; 21. radiating part; 211. layer structure; 22. feeding part; 221. feeding inner core; 222. feeding outer conductor;

[0078] 23. First radiation unit; 24. Second radiation unit; 25. Third radiation unit; 26. Fourth radiation unit; 27. Fifth radiation unit;

[0079] 30. Second antenna cover;

[0080] 41, first transmission member; 411, transmission shaft; 412, driving gear; 413, driven gear; 42, second transmission member; 43, third transmission member;

[0081] 50. Driving parts;

[0082] 60. A first radome;

[0083] 200, communication equipment; 210, base station antenna; 220, pole; 230, antenna adjustment bracket. DETAILED DESCRIPTION

[0084] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0085] Figure 1 FIG. 1 is a schematic diagram of the structure of a base station antenna in the related art. Figure 1 As shown, the base station antenna includes a reflector 120, a phase shifter 110 and a plurality of array antennas 130, each array antenna 130 including a plurality of radiation units 131. The phase shifter 110 and the array antenna 130 are arranged on opposite sides of the reflector 120, and the phase shifter 110 is electrically connected to the radiation unit 131 via a coaxial cable. The phase of the radiation unit 131 can be adjusted by the phase shifter 110 to achieve beam downtilt, thereby achieving the purpose of adjusting the downtilt angle. The reflector 120 reflects the electromagnetic signal radiated by the radiation unit 131 to achieve directional radiation.

[0086] However, due to the limitation of the reflector 120, the weight of the base station antenna is heavy. In addition, due to the large dielectric loss of the coaxial cable, the overall performance of the base station antenna is deteriorated. In addition, the azimuth angle of a single array antenna 130 cannot be adjusted by mechanical rotation alone, so it cannot meet the use requirements.

[0087] In view of this, the embodiment of the present application provides a base station antenna 210 and a communication device 200, which can individually adjust the azimuth angle of a single antenna array 100 in the base station antenna 210. In addition, the radiation unit 20 can radiate directionally while removing the reflector, which can not only meet the use requirements, but also reduce the weight of the base station antenna 210 to achieve a lightweight design. In addition, the radiation unit 20 in the base station antenna 210 is electrically connected to the cavity 12 in the strip line 10 and the conductor 11 in the strip line, respectively, which can reduce the loss and ensure the overall performance of the base station antenna 210.

[0088] The communication device 200 provided in the embodiment of the present application may include but is not limited to a radar, a RAN node, etc. In the embodiment of the present application, the RAN node is taken as the above-mentioned communication device 200 as an example for explanation, and the RAN node may be located in a base station subsystem (base bastion subsystem, BBS), a terrestrial radio access network (UMTS terrestrial radio access network, UTRAN) or an evolved terrestrial radio access network (evolved universal terrestrial radio access, E-UTRAN), and is used to provide cell coverage of wireless electromagnetic signals to achieve communication between terminal devices and wireless networks. Specifically, the RAN node can be a base transceiver station (BTS) in a global system for mobile communication (GSM) or (code division multiple access, CDMA) system, or a NodeB (NB) in a wideband code division multiple access (WCDMA) system, or an evolutionary NodeB (eNB or eNodeB) in a long term evolution (LTE) system, or a wireless controller in a cloud radio access network (CRAN) scenario, or an open radio access network (open RAN, O-RAN or ORAN) architecture. Alternatively, the RAN node can also be a relay station, an access point, an on-board device, a wearable device, a g-node (gNodeB or gNB) in a new radio (NR) system, or a base station in a future evolved network, etc., which is not limited in the embodiments of the present application.

[0089] In one possible scenario, a RAN node may be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation NodeB (gNB), a next generation base station in a sixth generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. A RAN node may be a macro base station (e.g. Figure 1 110a in), micro base stations or indoor stations (such as Figure 1 110b in the example above), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node may also be a server, a wearable device, a vehicle or an onboard device, etc. For example, the access network device in the vehicle to everything (V2X) technology may be a road side unit (RSU).

[0090] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH).

[0091] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, CU, CU-CP, CU-UP, DU and RU are described as examples in this application. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0092] Figure 2 A schematic diagram of the structure of a communication device provided in an embodiment of the present application. Figure 2 As shown, the communication device 200 provided in the embodiment of the present application includes a base station antenna 210, a pole 220, and an antenna adjustment bracket 230. One end of the base station antenna 210 is connected to the pole 220, and the other end of the base station antenna 210 is connected to the first end of the antenna adjustment bracket 230. The second end of the antenna adjustment bracket 230 is connected to the pole 220, and the downtilt angle of the entire base station antenna 210 can be adjusted by the antenna adjustment bracket 230 to adjust the electromagnetic signal coverage range of the base station antenna 210.

[0093] The base station antenna 210 provided in the embodiment of the present application includes at least one antenna array 100 , and the at least one antenna array 100 includes at least one radiation unit 20 .

[0094] For example, Figure 3 As shown, the base station antenna 210 includes three antenna arrays 100, and each antenna array 100 includes five radiation units 20. Of course, the number of antenna arrays 100 included in the base station antenna 210 may be more or less than three, and the number of radiation units 20 included in at least one antenna array 100 may be less than or more than five. Figure 3 A cross-sectional view of the first base station antenna provided in an embodiment of the present application.

[0095] When the base station antenna 210 includes an antenna array 100 , the antenna array 100 may include one or more radiation units 20 .

[0096] When the base station antenna 210 includes multiple antenna arrays 100 , each antenna array 100 may include multiple radiation units 20 , or a part of the multiple antenna arrays 100 may include multiple radiation units 20 and another part may include one radiation unit 20 .

[0097] In which, when the base station antenna 210 includes multiple antenna arrays 100 and each antenna array 100 includes multiple radiation units 20, the number of radiation units 20 of the multiple antenna arrays 100 can be the same, or the number of radiation units 20 of at least two antenna arrays 100 in the multiple antenna arrays 100 can be different.

[0098] When the base station antenna 210 includes multiple antenna arrays 100, the operating frequency bands of the multiple antenna arrays 100 may be the same, or the operating frequency bands of at least two antenna arrays 100 may be different.

[0099] In the embodiment of the present application, the radiation unit 20 may also be referred to as an antenna element, an element, etc. It is a basic unit constituting the antenna array 100 and can effectively radiate or receive electromagnetic signals.

[0100] Continue to see Figure 3 As shown, the base station antenna 210 may further include a first radome 60, and at least one antenna array 100 is disposed inside the first radome 60. The first radome 60 may protect the antenna array 100 from the influence of the external environment.

[0101] The following describes an implementation method of the base station antenna 210 provided in an embodiment of the present application in conjunction with the accompanying drawings.

[0102] Figure 4 A partial structural diagram of a second base station antenna provided in an embodiment of the present application, Figure 5 for Figure 4 A partial cross-sectional view of a single antenna array in cooperation with a driving member. The base station antenna 210 provided in the embodiment of the present application includes at least one antenna array 100, such as Figure 4 As shown, the base station antenna 210 includes four antenna arrays 100. Of course, the number of antenna arrays 100 may be more or less than four. The multiple antenna arrays 100 are arranged along the second direction (eg Figure 4 At least one antenna array 100 includes a strip line 10 and at least one radiating element 20, such as Figure 4 and Figure 5 As shown, the four antenna arrays 100 each include a strip line 10 and ten radiating elements 20. Of course, the number of antenna arrays 100 having a strip line 10 and at least one radiating element 20 may be more than or less than four, and the number of radiating elements 20 of at least one antenna array 100 may be less than or more than ten. In the same antenna array 100, the plurality of radiating elements 20 are arranged along the length direction of the strip line 10 (e.g. Figure 4 X direction) are arranged side by side and at intervals.

[0103] The second direction and the first direction (such as Figure 4 Y direction) and the length direction of the strip line 10 (such as Figure 4 In the embodiment of the present application, the first direction, the second direction and the length direction of the strip line 10 are perpendicular to each other.

[0104] In the embodiment of the present application, the base station antenna 210 includes a plurality of antenna arrays 100, and each antenna array 100 includes a strip line 10. However, in some possible implementations, some of the plurality of antenna arrays 100 of the base station antenna 210 include strip lines 10, for example, the base station antenna 210 includes four antenna arrays 100, and two of the four antenna arrays 100 include strip lines 10. Of course, the number of antenna arrays 100 including strip lines 10 may also be less than or more than two.

[0105] Continue to see Figure 4 and Figure 5 As shown, at least one antenna array 100 further includes at least one second antenna cover 30, for example Figure 4 and Figure 5 As shown, the four antenna arrays 100 each include ten second antenna covers 30. Of course, the number of antenna arrays 100 including the second antenna covers 30 may be less than or more than four, and the number of second antenna covers 30 of at least one of the four antenna arrays 100 may be more than or less than ten. In the same antenna array 100, multiple second antenna covers 30 correspond to multiple radiation units 20 one by one, the opening of each second antenna cover 30 faces the cavity 12 and is connected to the cavity 12, and each radiation unit 20 is arranged inside the corresponding second antenna cover 30. The second antenna cover 30 can protect the radiation unit 20 from the external environment.

[0106] The specific structure of the second antenna cover 30 is not limited here. Figure 4 As shown, the second antenna cover 30 has a rectangular parallelepiped shape and a cylindrical structure, with an opening of the cylindrical structure facing the strip line 10 .

[0107] In one embodiment, each antenna array 100 of the base station antenna 210 may also remove the second antenna cover 30 (not shown in the figure).

[0108] In one embodiment, when the base station antenna 210 has a first antenna cover 60 (not shown in the figure), the second antenna cover 30 of at least one antenna array 100 may also be disposed inside the first antenna cover 60. Of course, when the antenna array 100 removes the second antenna cover 30, the radiation unit 20 of at least one antenna array 100 may also be disposed inside the first antenna cover 60.

[0109] In the present application, see Figure 5As shown, the base station antenna 210 further includes a driving member 50 , which is drivingly connected to the cavity 12 of the strip line 10 and is used to output a driving force to drive the antenna array 100 to rotate around a rotation axis parallel to the length direction of the strip line 10 .

[0110] Of course, in a possible implementation, the base station antenna 210 may not include the driving component 50 . In this case, the driving component 50 and the base station antenna 210 are two parallel components in the communication device 200 .

[0111] There is no limitation on the specific structure of the driving member 50. By way of example, the driving member 50 may include a driving motor, which is used to output a driving force for driving the antenna array 100 to rotate.

[0112] Continue to see Figure 5 As shown, the driving member 50 is connected to the cavity 12 of the strip line 10 by transmission, however, the driving member 50 can also be indirectly connected to the cavity 12 of the strip line 10 by transmission through the second antenna cover 30. Specifically, the second antenna cover 30 is used to receive the driving force output by the driving member 50 and transmit the driving force to the cavity 12, so that the cavity 12 drives the radiation unit 20 and the second antenna cover 30 disposed on the cavity 12 to rotate around the rotation axis.

[0113] Figure 6 yes Figure 5 A partial cross-sectional view of the antenna array in FIG. Figure 5 As shown, and see Figure 6 As shown, the stripline 10 of at least one antenna array 100 includes a stripline inner conductor 11 and a cavity 12, wherein the stripline inner conductor 11 is disposed inside the cavity 12. In the same antenna array 100, a plurality of radiation units 20 are fixedly connected to the outer surface of the cavity 12. The cavity 12 is used to be transmission-connected with the driver 50 and receive the driving force output by the driver 50. When the cavity 12 receives the driving force, the antenna array 100 corresponding to the cavity 12 is used to rotate around a rotation axis parallel to the length direction of the stripline 10, and the azimuth angle of the antenna array 100 can be adjusted individually.

[0114] From above Figure 4 It can be known that the multiple antenna arrays 100 are arranged side by side and at intervals along the second direction, so the rotation axes of any two antenna arrays 100 are parallel to each other.

[0115] From above Figure 4It can be seen that the number of antenna arrays 100 is multiple, and the cavity 12 of at least one antenna array 100 is used to receive driving force, so that the azimuth angle of a single antenna array 100 can be adjusted. For example, the cavities 12 of multiple antenna arrays 100 are all used to receive drive, and the azimuth angle of any antenna array 100 can be flexibly adjusted. Alternatively, the cavities 12 of some of the multiple antenna arrays 100 of the base station antenna 210 are used to receive driving force. For example, in one embodiment, the base station antenna 210 includes four antenna arrays 100, wherein the cavity 12 of one antenna array 100 is used to receive driving force, and the cavities 12 of the remaining three antenna arrays 100 do not receive driving force.

[0116] In a possible implementation, combining Figure 4 It can be seen that the rotation directions of the multiple antenna arrays 100 can be the same, for example, the multiple antenna arrays 100 can all rotate clockwise or counterclockwise around the rotation axis. Of course, the rotation directions of some antenna arrays 100 in the multiple antenna arrays 100 can also be the same, for example Figure 4 The rotation directions of two of the antenna arrays 100 are the same, and the rotation directions of the remaining two antenna arrays 100 are different from the rotation directions of the two antenna arrays 100. Such a setting can meet corresponding usage requirements.

[0117] In a possible implementation, combining Figure 4 It can be seen that at least two antenna arrays 100 in the base station antenna 210 rotate simultaneously, for example Figure 4 Two of the antenna arrays 100 rotate simultaneously, and the remaining two antenna arrays 100 and two of the antenna arrays 100 do not rotate simultaneously. Of course, the multiple antenna arrays 100 in the base station antenna 210 may also rotate at different times, that is, the multiple antenna arrays 100 rotate separately. Among them, rotating at the same time can be understood as multiple antenna arrays 100 rotating at the same time. In addition, rotating at different times can be understood as only one antenna array 100 rotating at the same time. With such a setting, the azimuth angle of the corresponding antenna array 100 can be adjusted according to the use requirements.

[0118] In a possible implementation, at least two antenna arrays 100 of the base station antenna 210 have different operating frequency bands. Figure 7 As shown, Figure 7 A schematic diagram of a base station antenna having multiple operating frequency bands is provided for an embodiment of the present application. Figure 7 In the example, two antenna arrays 100A of the three antenna arrays 100 work in the first frequency band, and the remaining antenna array 100B works in the second frequency band, and the first frequency band and the second frequency band are different. Of course, the working frequency bands of the multiple antenna arrays 100 of the base station antenna 210 are the same.

[0119] To summarize, the multiple antenna arrays 100 in the base station antenna 210 provided in the embodiment of the present application can rotate simultaneously or at least two rotate simultaneously, and / or the rotation directions of at least two antenna arrays 100 are the same, and / or the working frequency bands of at least two antenna arrays 100 are different or the working frequency bands of multiple antenna arrays 100 are the same to meet user needs.

[0120] In the embodiment of the present application, there is no limitation on how the driving member 50 drives the multiple antenna arrays 100 to rotate.

[0121] For example, in combination with Figure 4 and Figure 5 As shown, the base station antenna 210 may also include a plurality of first transmission members 41. Among them, the plurality of first transmission members 41 correspond one to one with the plurality of antenna arrays 100, and the first transmission member 41 is used for transmission connection between the driving member 50 and the cavity 12 of the corresponding antenna array 100. By realizing transmission connection between the driving member 50 and the plurality of antenna arrays 100 through the plurality of first transmission members 41, not only can a single antenna array 100 be rotated individually to flexibly adjust the azimuth angle of the single antenna array 100, but also when the single antenna array 100 is rotated can be controlled to meet the use requirements. In addition, the difficulty of controlling whether the plurality of antenna arrays 100 rotate at the same time can also be reduced.

[0122] There is no limitation on the number of driving members 50. In one embodiment, one antenna array 100 may correspond to one driving member 50, and each driving member 50 drives the corresponding antenna array 100 to rotate. Alternatively, in one embodiment, one driving member 50 may correspond to at least two antenna arrays 100, for example, one driving member 50 drives two antenna arrays 100 to rotate.

[0123] The specific structure of the first transmission member 41 is not limited here. Figure 4 and Figure 5 As shown, each first transmission member 41 includes a transmission shaft 411, a driving gear 412 and a driven gear 413. The driving gear 412 is sleeved on one end of the transmission shaft 411 and meshes with the driven gear 413, and the driven gear 413 is sleeved on the outer wall of the cavity 12. The axis of the transmission shaft 411 is parallel to the length direction of the strip line 10. The axis of the transmission shaft 411 can be located below or above the cavity 12 along the first direction. Of course, the axis of the transmission shaft 411 can also be set on one side of the cavity 12 along the second direction. The driving member 50 is in transmission connection with the transmission shaft 411, and the driving member 50 drives the transmission shaft 411 to rotate, so that the driving gear 412 drives the driven gear 413 to rotate, and the driven gear 413 drives the cavity 12 to rotate, so that the antenna array 100 rotates.

[0124] It should be noted that, in addition to the gear transmission method for connecting the cavity 12 and the driving member 50 , the first transmission member 41 may also be chain transmission, belt transmission, rack transmission, etc.

[0125] Figure 8 The embodiment of the present application provides a method different from Figure 5 Schematic diagram of a second structure in which a driving member is transmission-connected to an antenna array. Figure 8 and Figure 5 The difference is that the base station antenna 210 may also include a second transmission member 42 and a plurality of third transmission members 43. The plurality of third transmission members 43 correspond to the cavities 12 of the plurality of antenna arrays 100 one by one, and each third transmission member 43 is connected to the cavity 12 of the corresponding antenna array 100. In a direction perpendicular to the length direction of the strip line 10, two adjacent third transmission members 43 are connected in a transmission manner. The second transmission member 42 is connected in a transmission manner between the driving member 50 and the cavity 12 of one of the plurality of antenna arrays 100. For example Figure 8 As shown, there are three third transmission members 43 , each antenna array 100 corresponds to one third transmission member 43 , and the cavity 12 of one of the three antenna arrays 100 is transmission-connected to the driving member 50 via the second transmission member 42 .

[0126] It should be noted that, in addition to being transmission-connected to the cavity 12, the second transmission member 42 may also be transmission-connected to one of the plurality of third transmission members 43. In addition, the plurality of antenna arrays 100 may rotate simultaneously or at different times, which is not limited here. In addition, the structures of the plurality of third transmission members 43 may be the same or different, which is not limited here. The transmission connection method of two adjacent third transmission members 43 may include, but is not limited to, gear transmission, chain transmission, belt transmission, etc.

[0127] Fig. 9 It is a schematic diagram of a third structure in which a driving member is transmission-connected to multiple antenna arrays provided in an embodiment of the present application. Fig. 9 and Figure 8 The difference is that the base station antenna 210 may also include a second transmission member 42 and at least one third transmission member 43. One end of the second transmission member 42 is transmission-connected to the driving member 50, and the second end and the third end of the second transmission member 42 are respectively transmission-connected to the cavities 12 of two of the multiple antenna arrays 100. The cavity 12 of each of the remaining antenna arrays 100 in the multiple antenna arrays 100 is transmission-connected to the cavity 12 of any one of the two antenna arrays 100 through a third transmission member 34. For example, Fig. 9As shown, the second transmission member 42 is transmission-connected to the driving member 50 and the cavities 12 of two of the antenna arrays 100 , and the cavity 12 of the remaining antenna array 100 is transmission-connected to the cavity 12 of one of the two antenna arrays 100 via a third transmission member 43 .

[0128] Fig.10 It is a schematic diagram of a fourth structure in which a driving component is transmission-connected to multiple antenna arrays provided in an embodiment of the present application. Fig.10 and Figure 8 The difference is that the base station antenna 210 may include multiple second transmission members 42 and multiple third transmission members 43. Among them, the multiple antenna arrays 100 are divided into at least two groups, each group includes multiple antenna arrays 100, and each group corresponds to a second transmission member 42. In the same group, along the second direction, the cavities 12 of two adjacent antenna arrays 100 are transmission-connected through a third transmission member 43. The cavity 12 of one antenna array 100 in each group is transmission-connected to the driving member 50 through the corresponding second transmission member 42.

[0129] It should be noted that, in addition to being transmission-connected to the cavity 12 , the second transmission member 42 may also be indirectly transmission-connected to the cavity 12 via the third transmission member 43 .

[0130] Fig.11 for Figure 5 In one possible embodiment, see Fig.11 As shown, the cavity 12 in at least one antenna array 100 includes a plurality of cavity segments 122 extending along the length direction of the strip line 10. In the same cavity 12, along the length direction of the strip line 10, the radial cross-section areas of at least two cavity segments 122 are different. In the radial cross-section of the cavity segment 122 is perpendicular to the length direction of the strip line 10. Since the cavity 12 is formed by at least two cavity segments 122 with different radial cross-section areas, the weight of the cavity 12 is reduced, thereby reducing the weight of the antenna array 100, and further reducing the weight of the base station antenna 210.

[0131] In the embodiment of the present application, the different radial cross-sectional areas of at least two cavity segments 122 can be understood as different wall thicknesses of at least two cavity segments 122, or can also be understood as different inner diameters and / or outer diameters of at least two cavity segments 122.

[0132] There is no limitation on the specific number of antenna arrays 100 including cavities 12 of multiple cavity segments 122. In one embodiment, the cavity 12 of each antenna array 100 includes at least two cavity segments 122 with different radial cross-sectional areas. Alternatively, in one embodiment, the cavities 12 of some antenna arrays 100 in the multiple antenna arrays 100 include at least two cavity segments 122 with different radial cross-sectional areas.

[0133] Of course, in addition to being formed by a plurality of cavity segments 122 having different radial cross-sectional areas, the cavity 12 may also be formed by a plurality of cavity segments 122 having the same radial cross-sectional area, for example. Fig.12 As shown, the cavity 12 is formed by two cavity segments 122. Fig.12 Another transverse cross-sectional view of a cavity provided in an embodiment of the present application. It is understandable that the cavity 12 formed by a plurality of cavity segments 122 with the same radial cross-sectional area can be understood as a cavity structure with the same inner diameter and / or outer diameter along the length direction of the cavity 12 .

[0134] In some embodiments, the multiple cavity segments 122 of the cavity 12 may be an integral structure, or in some embodiments, the cavity 12 may be formed by splicing the multiple cavity segments 122 .

[0135] In a possible implementation, combining Figure 6 As shown, the cavity 12 of at least one antenna array 100 is used to define at least one accommodating cavity 121, for example Figure 4 As shown, the cavities 12 of the four antenna arrays 100 define a plurality of accommodating cavities 121. Of course, the number of antenna arrays 100 with a plurality of accommodating cavities 121 may be less than or more than four. The stripline 10 of at least one antenna array 100 includes at least one stripline inner conductor 11. In the same antenna array 100, at least one accommodating cavity 121 corresponds to at least one stripline inner conductor 11 one by one, and each stripline inner conductor 11 is arranged inside the corresponding accommodating cavity 121. In the same antenna array 100, when the cavity 12 defines a plurality of accommodating cavities 121, the plurality of accommodating cavities 121 are arranged side by side in a direction perpendicular to the length direction of the stripline 10, and two adjacent accommodating cavities 121 share a side wall. In this way, the stripline 10 can be electrically connected to the radiation unit 20 having at least one polarization direction. In addition, when the number of accommodating cavities 121 is multiple, two adjacent accommodating cavities 121 are separated by side walls, which can avoid electromagnetic interference when transmitting electromagnetic signals and improve the effect of transmitting electromagnetic signals.

[0136] The accommodating cavity 121 is connected at two opposite ends along the length direction of the strip line 10. In other words, the accommodating cavity 121 can be similar to the inside of a tube with two ends connected, that is, the accommodating cavity 121 is a hollow structure. Alternatively, the cavity 12 can be understood as a tubular structure with two ends connected.

[0137] It should be noted that, when there are multiple antenna arrays 100, in addition to the cavity 12 of each antenna array 100 defining multiple accommodating cavities 121, in some possible implementations, the cavities 12 of a portion of the antenna arrays 100 in the multiple antenna arrays 100 may define multiple accommodating cavities 121, and the cavities 12 of another portion of the antenna arrays 100 define one accommodating cavity 121. Alternatively, in some possible implementations, the cavity 12 of each antenna array 100 in the multiple antenna arrays 100 defines one accommodating cavity 121.

[0138] In some possible implementations, the number of accommodating cavities 121 defined by the cavity 12 may be determined according to the polarization direction of the radiation unit 20 , which is not limited here.

[0139] In one embodiment, when the radiation unit 20 is a single-polarization radiation unit, the cavity 12 of the antenna array 100 having the single-polarization radiation unit is used to define a receiving cavity 121, and a stripline inner conductor 11 is disposed in the receiving cavity 121. The first end and the second end of the single-polarization radiation unit are electrically connected to the cavity 12 and the stripline inner conductor 11, respectively. Figure 6 shown.

[0140] Alternatively, in one embodiment, when the radiation unit 20 is a dual-polarization radiation unit, the cavity 12 of the antenna array 100 having the dual-polarization radiation unit is used to define two accommodating cavities 121, and the two accommodating cavities 121 are arranged side by side in a direction perpendicular to the length direction of the strip line 10, and the two accommodating cavities 121 share a side wall. In other words, the cavity 12 of at least one antenna array 100 defines two accommodating cavities 121 separated by an inner wall, and in the same antenna array 100, a strip line inner conductor 11 is arranged inside each accommodating cavity 121. The first end and the second end of the dual-polarization radiation unit are electrically connected to the cavity 12, respectively, and the third end and the fourth end of the dual-polarization radiation unit are electrically connected to the two strip line inner conductors 11 arranged inside the two accommodating cavities 121, respectively, for example Fig.13 As shown. Among them, Fig.13 A schematic diagram of the structure of the antenna array of the third base station antenna provided in an embodiment of the present application.

[0141] The dual polarization of the dual polarization radiation unit may include but is not limited to horizontal and vertical, ±45°, etc. In addition, in the embodiment of the present application, the dual polarization radiation unit is taken as the radiation unit 20 for illustration.

[0142] It should be noted that, when there are multiple antenna arrays 100, the polarization directions of the radiation units 20 of the multiple antenna arrays 100 may be the same or different. In addition, when the antenna array 100 includes multiple radiation units 20, the polarization directions of the multiple radiation units 20 may be the same or different.

[0143] In one possible implementation, the strip line 10 of at least one antenna array 100 may also include a movable part 13 (not shown in the figure), which is arranged inside the cavity 12 and is used to move along the length direction of the strip line 10 relative to the conductor 11 inside the strip line to change the phase of the electromagnetic signal radiated by the strip radiation unit 20, thereby realizing a phase adjustment function, and further adjusting the downtilt angle of the antenna array 100.

[0144] There is no limitation on the specific number of antenna arrays 100 having movable parts 13. For example, in the embodiment of the present application, the strip line 10 of each antenna array 100 includes a movable part 13, which can flexibly adjust the downtilt angle of any one of the multiple antenna arrays 100. Alternatively, in some embodiments, some of the multiple antenna arrays 100 have movable parts 13.

[0145] Among them, since the cavity 12 is used to define at least one accommodating cavity 121 for accommodating the stripline inner conductor 11, the stripline 10 includes at least one movable member 13, and at least one movable member 13 corresponds to at least one accommodating cavity 121 one by one, and each movable member 13 is arranged inside the corresponding accommodating cavity 121. Exemplarily, the stripline 10 of at least one antenna array 100 among the multiple antenna arrays 100 includes two accommodating cavities 121 and two movable members 13, and each movable member 13 is arranged inside the corresponding accommodating cavity 121.

[0146] The specific structure of the movable part 13 is not limited here. In one embodiment, the movable part 13 includes a dielectric part for sliding along the length direction of the stripline 10 relative to the inner conductor 11 of the stripline, so that the equivalent dielectric constant between the inner conductor 11 of the stripline and the cavity 12 changes to achieve the purpose of phase shifting. Alternatively, in one embodiment, the movable part 13 includes a metal part for sliding along the length direction of the stripline 10 and for coupling and connecting with the inner conductor 11 of the stripline, which can change the transmission path length of the electromagnetic signal to achieve the purpose of phase shifting.

[0147] In the present application, see Figure 6 As shown, in the same antenna array 100, at least one radiating unit 20 includes a radiating portion 21 and a feeding portion 22, for example Figure 4As shown, in the same antenna array 100, ten radiating units 20 all include a radiating portion 21 and a feeding portion 22. Of course, the number of radiating units 20 having a radiating portion 21 and a feeding portion 22 may be less than or more than ten. The first end of the feeding portion 22 is fixedly connected to the outer surface of the cavity 12, and the radiating portion 21 is fixedly connected to the second end of the feeding portion 22 and is electrically connected to the stripline inner conductor 11 and the cavity 12 respectively through the feeding portion 22. In this way, not only can the radiating portion 21 be fixedly connected to the outer surface of the cavity 12 to simplify the structure of the antenna array 100, but also the radiating portion 21 can be electrically connected to the cavity 12 and the stripline inner conductor 11 respectively to reduce the loss.

[0148] In the embodiment of the present application, each of the multiple radiating units 20 of the antenna array 100 includes a radiating portion 21 and a feeding portion 22. However, in some possible implementations, some of the multiple radiating units 20 of the antenna array 100 may also include a radiating portion 21 and a feeding portion 22. For example, two of the four radiating units 20 of the antenna array 100 include a radiating portion 21 and a feeding portion 22.

[0149] In the embodiment of the present application, the specific structure of the radiation portion 21 is not limited here.

[0150] For example, see Figure 6 As shown, the radiation part 21 includes a plurality of layer structures 211 arranged side by side and at intervals along a first direction, and the plurality of layer structures 211 are used to directional radiate electromagnetic signals along the first direction away from the strip line 10. The first direction intersects and does not overlap with the length direction of the strip line 10. The radiation part 21 composed of the plurality of layer structures 211 directional radiates electromagnetic signals to the corresponding area, which can not only meet the use requirements, but also remove the reflector in the related art, thereby reducing the weight of the base station antenna 210 to achieve a lightweight design.

[0151] When the reflector is removed, there is no restriction on how the radiating portion 21 achieves directional radiation. In one embodiment, one of the multiple layer structures 211 of the radiating portion 21 that is closest to the stripline 10 can be used to reflect the electromagnetic signal radiated by the remaining layer structures 211, that is, one of the layer structures 211 closest to the stripline 10 functions as a reflector. In one embodiment, each layer structure 211 in the radiating portion 21 is used to radiate electromagnetic signals, and the electromagnetic signals radiated by all the layer structures 211 are superimposed on each other, so that the radiating portion 21 radiates electromagnetic signals in a direction.

[0152] In the same radiation portion 21, the structures of all layer structures 211 may be the same or different, which is not limited here. In addition, the specific structure of the layer structure 211 is not limited here either.

[0153] It should be noted that when the antenna array 100 includes multiple radiating portions 21, each radiating portion 21, in addition to including multiple layer structures 211, in some possible implementations, a portion of the multiple radiating portions 21 may also include multiple layer structures 211. In other words, in the same antenna array 100, there are at least two structures of the radiating portion 21.

[0154] Continue to see Figure 5 As shown, at least one antenna array 100 includes a plurality of radiating elements 20, such as Figure 4 As shown, the four antenna arrays 100 each include a plurality of radiating elements 20. Of course, the number of antenna arrays 100 having a plurality of radiating elements 20 may be more or less than four. In the same antenna array 100, the plurality of radiating elements 20 are arranged side by side and at intervals along the length direction of the strip line 10. In other words, in the same antenna array 100, there is a gap between two adjacent radiating elements 20 along the length direction of the strip line 10, and thus there is a gap between the layer structures 211 of the two adjacent radiating elements 20, and the layer structures 211 of the two adjacent radiating elements 20 are independent of each other.

[0155] Fig.14 Provide different from the embodiment of the present application Figure 5 A schematic diagram of the structure of the first antenna array is shown. In a possible implementation, when at least one antenna array 100 includes a plurality of radiating elements 20, in the same antenna array 100, along the length direction of the strip line 10, the plurality of radiating elements 20 are arranged side by side, and two adjacent layer structures 211 are an integral structure, and the two adjacent layer structures 211 belong to two adjacent radiating elements 20 of the at least two radiating elements 20, respectively.

[0156] Continue to see Fig.13 As shown, each of the two adjacent layer structures 211 is the layer structure 211 closest to the stripline 10 in the radiation portion 21 along the first direction. However, in some embodiments, each of the two adjacent layer structures 211 may also be located on the side of the layer structure 211 closest to the stripline 10 in the radiation portion 21 along the first direction facing away from the stripline 10.

[0157] Continue to see Fig.14 As shown, two adjacent layer structures 211 are disposed at the same height relative to the stripline 10 along the first direction. However, two adjacent layer structures 211 may also be disposed at non-equal height relative to the stripline 10 along the first direction.

[0158] Continue to see Fig.14As shown, two adjacent layer structures 211 are an integrated structure, which can be understood as the radiation parts 21 of two adjacent radiation units 20 share the same layer structure 211. In addition, in the same antenna array 100, the number of radiation units 20 sharing the same layer structure 211 can be all (such as Fig.14 shown) or part (e.g. Fig.15 or Fig.16 ).

[0159] In one embodiment, the antenna array 100 includes five radiating elements 20, and the five radiating elements 20 share the same layer structure 211, for example Fig.14 shown.

[0160] Fig.15 Provide different from the embodiment of the present application Figure 5 The schematic diagram of the structure of the second antenna array is shown in FIG. Fig.15 As shown, the antenna array 100 includes five radiation elements 20, and the five radiation elements 20 include a first radiation element 23, a second radiation element 24, a third radiation element 25, a fourth radiation element 26 and a fifth radiation element 27. The first radiation element 23 and the second radiation element 24 share a layer structure 211, and the third radiation element 25, the fourth radiation element 26 and the fifth radiation element 27 share the same layer structure 211.

[0161] Fig.16 Provide different from the embodiment of the present application Figure 5 The third antenna array is shown in FIG. Fig.16 As shown, the antenna array 100 includes five radiating elements, including a first radiating element 23 , a second radiating element 24 , a third radiating element 25 , a fourth radiating element 26 and a fifth radiating element 27 , and the first radiating element 23 and the second radiating element 24 share a layer structure 211 .

[0162] In summary, in the same antenna array 100, multiple radiation units 20 are arranged at intervals or the radiation parts 21 of at least two radiation units 20 share the same layer structure 211, which can radiate electromagnetic signals to the corresponding area to meet the use requirements. However, when the radiation parts 21 of at least two radiation units 20 in the same antenna array 100 are independent of each other, the weight of the base station antenna 210 can be further reduced to achieve an extremely lightweight design.

[0163] In the embodiments of this application, see Figure 6As shown, the feeding portion 22 includes a feeding inner core 221 and a feeding outer conductor 222. The first end of the feeding outer conductor 222 is fixedly connected to the outer surface of the cavity 12 and electrically connected to the cavity 12, the radiating portion 21 is connected to the second end of the feeding outer conductor 222 and electrically connected to the feeding outer conductor 222, and the radiating portion 21 is electrically connected to the stripline inner conductor 11 through the feeding inner core 221. In this way, not only can the radiating portion 21 be fixed to the outer surface of the cavity 12, but also the radiating portion 21 can be electrically connected to the stripline inner conductor 11 and the cavity 12 respectively, thereby realizing a low-loss design.

[0164] It should be noted that the feed core 221 and the radiation portion 21 may be electrically connected in physical contact or coupled without physical contact. In other words, the feed core 221 may be directly electrically connected or coupled with the radiation portion 21 .

[0165] There is no limitation on the specific structure of the feeding outer conductor 222. In one embodiment, the feeding outer conductor 222 may be a hollow structure, and the feeding inner core 221 is disposed inside the feeding outer conductor 222, which can improve the compactness of the radiation unit 20.

[0166] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0167] In the embodiments of the present application, the devices or elements referred to or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0168] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0169] The term "plurality" in this article refers to two or more than two. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship; in a formula, the character " / " indicates that the previous and next associated objects are in a "division" relationship.

[0170] It should be understood that the various numerical numbers involved in the embodiments of the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0171] It can be understood that in the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

1. A base station antenna, characterized in that: comprising at least one antenna array, at least one of the antenna arrays comprising a stripline and at least one radiating element; The stripline includes a stripline inner conductor and a cavity for accommodating the stripline inner conductor; The at least one radiation unit is fixedly connected to the outer surface of the cavity; The cavity in at least one of the antenna arrays is used to receive a driving force output by a driving member. When the cavity receives the driving force, the antenna array corresponding to the cavity rotates around a rotation axis parallel to the length direction of the strip line.

2. The base station antenna according to claim 1, characterized in that: At least one of the radiation units includes a radiation portion for electrically connecting to the conductor inside the stripline and the cavity respectively, and the radiation portion includes a plurality of layer structures arranged side by side and at intervals along a first direction, and the plurality of layer structures are used to directionally radiate electromagnetic signals along the first direction away from the stripline; wherein the first direction intersects with and does not overlap with the length direction of the stripline.

3. A base station antenna, characterized in that: comprising at least one antenna array, at least one of the antenna arrays comprising a stripline and at least one radiating element; The at least one radiation unit is fixedly connected to the outer surface of the strip line; At least one of the radiation units includes a radiation portion electrically connected to the strip line, and the radiation portion includes a plurality of layer structures arranged side by side and at intervals along a first direction, and the plurality of layer structures are used to directionally radiate electromagnetic signals along the first direction away from the strip line; wherein the first direction intersects and does not overlap with the length direction of the strip line.

4. The base station antenna according to claim 3, characterized in that: The stripline includes a cavity and a stripline inner conductor disposed inside the cavity and extending along the length direction of the stripline; In the same antenna array, at least one of the radiation units is connected to the outer surface of the cavity, and the radiation part of at least one of the radiation units is electrically connected to the cavity and the inner conductor of the strip line, respectively.

5. The base station antenna according to claim 4, characterized in that: The cavity of at least one of the antenna arrays is used to receive the driving force output by the driving member, wherein: When the cavity receives the driving force, the antenna array corresponding to the cavity rotates around a rotation axis parallel to the length direction of the strip line.

6. The base station antenna according to any one of claims 2 to 5, characterized in that: At least one of the antenna arrays comprises a plurality of the radiating elements, wherein: In the same antenna array, a plurality of the radiation units are arranged side by side and at intervals along the length direction of the strip line; or, In the same antenna array, along the length direction of the strip line, a plurality of the radiation units are arranged side by side, two adjacent layer structures are an integral structure, and the two adjacent layer structures respectively belong to two adjacent radiation units of at least two radiation units.

7. The base station antenna according to any one of claims 1, 2, 4 and 5, characterized in that: At least one of the radiation units further comprises a feeding part, a first end of the feeding part is fixedly connected to the outer surface of the cavity, and the radiation part is fixedly connected to the second end of the feeding part and is electrically connected to the stripline inner conductor and the cavity respectively through the feeding part.

8. The base station antenna according to claim 7, characterized in that: The feeding portion includes a feeding inner core and a feeding outer conductor, wherein a first end of the feeding outer conductor is fixedly connected to the outer surface of the cavity and is electrically connected to the cavity, and the radiating portion is connected to the second end of the feeding outer conductor and is electrically connected to the feeding outer conductor, and the radiating portion is electrically connected to the stripline inner conductor through the feeding inner core.

9. The base station antenna according to any one of claims 1, 2, 4, 5, 7 and 8, characterized in that: The cavity in at least one of the antenna arrays comprises a plurality of accommodating cavity segments extending along the length direction of the strip line, wherein: In the same cavity, along the length direction of the strip line, the radial cross-sections of at least two of the accommodating cavity segments have different areas; wherein the radial cross-sections of the accommodating cavity segments are perpendicular to the length direction of the strip line.

10. The base station antenna according to any one of claims 1, 2, 4, 5, 7-9, characterized in that: The cavity of at least one of the antenna arrays is used to define at least one accommodating cavity, and the strip line of at least one of the antenna arrays includes at least one strip line inner conductor, wherein: In the same antenna array, the at least one accommodating cavity corresponds to the at least one stripline inner conductor in a one-to-one manner, and the stripline inner conductor is arranged inside the corresponding accommodating cavity; When the cavity defines a plurality of the accommodating cavities, the plurality of the accommodating cavities are arranged side by side along a direction perpendicular to the length direction of the strip line, and two adjacent accommodating cavities share a side wall.

11. The base station antenna according to claim 10, characterized in that: The strip line of at least one of the antenna arrays further comprises at least one movable element, the at least one movable element corresponds to the at least one accommodating cavity one by one, and each of the movable elements is arranged inside the corresponding accommodating cavity, wherein: The movable member includes a dielectric member for sliding relative to the inner conductor of the strip line along the length direction of the strip line; or, The movable member includes a metal member for sliding along the length direction of the strip line member and for coupling and connecting with the inner conductor of the strip line.

12. The base station antenna according to claim 10 or 11, characterized in that: The radiation unit is a single-polarization radiation unit or a dual-polarization radiation unit, wherein: When the radiation unit is the single-polarization radiation unit, the single-polarization radiation unit is used to be electrically connected to the cavity and one of the stripline inner conductors respectively; or, When the radiation unit is the dual-polarization radiation unit, the dual-polarization radiation unit is used to be electrically connected to the cavity and the two stripline inner conductors respectively.

13. The base station antenna according to claim 1, 2 or 5, characterized in that: The base station antenna includes a plurality of antenna arrays, the rotation axes of any two antenna arrays are parallel to each other, and the rotation directions of at least two antenna arrays are the same.

14. The base station antenna according to claim 1, 2, 5 or 13, characterized in that: The base station antenna comprises a plurality of antenna arrays, wherein: At least two of the antenna arrays rotate simultaneously; or, The plurality of antenna arrays do not rotate simultaneously.

15. The base station antenna according to claim 1, 2, 5, 13 or 14, characterized in that: The base station antenna comprises a plurality of antenna arrays, wherein: At least two of the antenna arrays have different operating frequency bands; or, The operating frequency bands of the multiple antenna arrays are the same.

16. The base station antenna according to any one of claims 13 to 15, characterized in that: The base station antenna also includes a plurality of first transmission members, each of which corresponds to each of the plurality of antenna arrays. The first transmission member is used for transmission connection between the driving member and the corresponding cavity of the antenna array.

17. The base station antenna according to claim 16, characterized in that: The base station antenna further comprises a driving member, which is drivingly connected to the cavity of at least one of the antenna arrays, and is used to drive the at least one antenna array to rotate around the rotation axis.

18. The base station antenna according to any one of claims 1 to 17, characterized in that: The base station antenna includes a plurality of antenna arrays, which are arranged side by side and at intervals along a second direction, and the second direction intersects and does not overlap with any one of the first direction and the length direction of the strip line.

19. A communication device, characterized in that: Comprising the base station antenna according to any one of claims 1 to 18.

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