Base station antennas and base stations

Abstract

This application relates to a base station antenna and a base station. The base station antenna includes a radiating element and a reflector. The radiating element includes two radiating arms arranged along a first polarization direction and two radiating arms arranged along a second polarization direction, the second polarization direction being orthogonal to the first polarization direction. The radiating element includes four supporting members and four grounding members, with the corresponding radiating arms, supporting members, and grounding members forming an integrated structure. One end of each supporting member is connected to a corresponding radiating arm, and the supporting member is bent relative to the radiating arm towards the reflector. One end of each grounding member is connected to the end of a corresponding supporting member away from the radiating arm, and the grounding member is bent relative to the supporting member. The grounding member abuts against the reflector to achieve grounding. Grounding of the radiating element is achieved through the abutment of the grounding member against the reflector. No welding is required, thus eliminating electroplating and better aligning with the trend of green and environmentally friendly development.

Description

Technical Field

[0001] This application relates to the field of antenna technology, and in particular to base station antennas and base stations. Background Technology

[0002] With the continuous development of communications, green, environmentally friendly, efficient, and multi-frequency fusion solutions that utilize limited rooftop space have become the latest requirements for base station antenna development. Achieving greenness involves two aspects: firstly, controlling the manufacturing of base station antennas, such as reducing electroplating and solder joints; and secondly, increasing the effective radiation energy of signals, thereby reducing power consumption, such as reducing the use of cables.

[0003] In related technologies, the radiating element of a base station antenna includes a radiating arm, a balun, and a feed component. The balun includes a balun base with a grounding layer. Grounding of the radiating element is achieved by soldering the grounding layer on the balun base to a coaxial cable or to an additional PCB circuit board. This soldering process requires electroplating, which is inconsistent with the trend towards green and environmentally friendly development. Summary of the Invention

[0004] Therefore, it is necessary to provide a base station antenna and base station to address the issue that the grounding of the radiating unit in related technologies requires welding and electroplating, which is inconsistent with the trend of green and environmentally friendly development.

[0005] A base station antenna includes a radiating element and a reflector; the radiating element includes two radiating arms arranged along a first polarization direction and two radiating arms arranged along a second polarization direction, wherein the second polarization direction is orthogonal to the first polarization direction;

[0006] The radiation unit includes four support members and four grounding members. The radiation arms, support members and grounding members are arranged in a one-to-one correspondence. The corresponding radiation arms, support members and grounding members are an integral structure.

[0007] One end of the support member is connected to the corresponding radiating arm, and the support member is bent relative to the radiating arm toward the reflector; one end of the grounding member is connected to the end of the corresponding support member away from the radiating arm; the grounding member is bent relative to the support member so that the grounding member is opposite to the reflector.

[0008] The grounding element abuts against the reflector; the radiation unit also includes a fixing element, and at least one of the grounding elements is connected to the reflector through a corresponding fixing element.

[0009] In one embodiment, the grounding member connected to the reflector via the fixing member has a first fixing hole, and the reflector has a second fixing hole;

[0010] The fixing member passes through the corresponding first fixing hole and second fixing hole to connect the grounding member to the reflector.

[0011] In one embodiment, the four grounding elements in the radiating unit are respectively in contact with the reflector.

[0012] In one embodiment, the number of radiating elements is at least two; the radiating element includes a first feed element that feeds two radiating arms arranged along the first polarization direction and a second feed element that feeds two radiating arms arranged along the second polarization direction;

[0013] The base station antenna includes a power divider circuit, which includes a first branch and a second branch. The first branch has two first output terminals, and the second branch has two second output terminals. The two first output terminals are respectively connected to the first feed components of two adjacent radiating elements. The two second output terminals are respectively connected to the two second feed components of two adjacent radiating elements.

[0014] In one embodiment, the power divider circuit is arranged parallel to and spaced apart from the reflector, such that the reflector forms the first ground layer of the power divider circuit;

[0015] Two adjacent radiation units are defined as a first radiation unit and a second radiation unit, respectively; two grounding elements of the first radiation unit are connected one-to-one with two grounding elements of the second radiation unit to form a second ground layer;

[0016] The power divider circuit is located between the first ground layer and the second ground layer to form a stripline transmission line, and the second ground layer is spaced apart from the power divider circuit; the projection of the second ground layer on the reflector covers the projection of the power divider circuit on the reflector.

[0017] In one embodiment, a conductive element is provided on the grounding element in the second stratum, and the conductive element is in contact with the reflector.

[0018] In one embodiment, the other two grounding members of the first radiating unit are respectively in contact with the reflector and are respectively connected to the reflector through corresponding fixing members;

[0019] The other two grounding components of the second radiation unit are in contact with the reflector and are connected to the reflector through corresponding fixing components.

[0020] In one embodiment, in the second stratum, the grounding element of the first radiating unit and the grounding element of the corresponding connected second radiating unit are an integral structure.

[0021] In one embodiment, in the second stratum, the grounding member of the first radiating unit and the grounding member of the corresponding connected second radiating unit have the same bending direction relative to the support member to which they are respectively connected.

[0022] In one embodiment, the base station antenna includes a first insulating member and a second insulating member; the first insulating member is disposed between the reflector and the power divider circuit, such that the reflector and the power divider circuit are spaced apart; the second insulating member is disposed between the second ground layer and the power divider circuit, such that the second ground layer and the power divider circuit are spaced apart.

[0023] In one embodiment, the first insulating member and the second insulating member are each provided with clearance spaces to avoid the grounding member that comes into contact with the reflector.

[0024] In one embodiment, the reflector is provided with a first connection hole, the first insulating member is provided with a second connection hole, the power divider circuit is provided with a third connection hole, the second insulating member is provided with a fourth connection hole, and the second ground layer is provided with a fifth connection hole;

[0025] The base station antenna includes fasteners that pass through the first connection hole, the second connection hole, the third connection hole, the fourth connection hole, and the fifth connection hole to fix the reflector, the first insulating component, the power divider circuit, the second insulating component, and the second ground layer.

[0026] In one embodiment, the first branch and the first feeder of the two adjacent radiating units are integrated into one structure; the second branch and the second feeder of the two adjacent radiating units are integrated into one structure.

[0027] In one embodiment, the base station antenna further includes: a first phase-shifting cavity, a second phase-shifting cavity, a first phase-shifting circuit, and a second phase-shifting circuit, wherein the first phase-shifting cavity and the second phase-shifting cavity are respectively connected to the side of the reflector facing away from the radiating element; the first phase-shifting circuit is disposed in the first phase-shifting cavity, and the second phase-shifting circuit is disposed in the second phase-shifting cavity;

[0028] The first branch has a first input terminal, and the first input terminal is provided with a first probe; the second branch has a second input terminal, and the second input terminal is provided with a second probe; one end of the first probe passes through the reflector and is connected to the first phase-shifting circuit; one end of the second probe passes through the reflector and is connected to the second phase-shifting circuit.

[0029] A base station includes a base station antenna as described in any of the above embodiments, and further includes an antenna cover, the antenna cover being connected to the reflector and covering the radiating element.

[0030] In the aforementioned base station antenna and base station, one end of the support member is connected to the corresponding radiating arm. The support member is bent relative to the radiating arm towards the reflector, thus bringing the end of the support member furthest from the radiating arm closer to the reflector. One end of the grounding member is connected to the end of the corresponding support member furthest from the radiating arm. The grounding member is bent relative to the support member, allowing it to be positioned close to the reflector and opposite to it, facilitating contact between the grounding member and the reflector for grounding. Since the corresponding radiating arm, support member, and grounding member are an integrated structure, grounding of the grounding member means grounding of the radiating unit. Furthermore, at least one grounding member is connected to the reflector via a fixing member, thus connecting the integrated structure to the reflector and ensuring stable contact between the grounding member and the reflector, ensuring reliable grounding of the radiating unit. Therefore, the grounding of the radiating unit of the aforementioned base station antenna is achieved through contact between the grounding member and the reflector, eliminating the need for welding and electroplating, thus aligning with the trend of green and environmentally friendly development. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a base station antenna according to one embodiment.

[0032] Figure 2 for Figure 1 The diagram shows the connection structure of the radiating arm, support, and grounding component of the base station antenna.

[0033] Figure 3 for Figure 1 The image shows a cross-sectional view of the base station antenna.

[0034] Figure 4 This is a schematic diagram of the base station antenna according to another embodiment.

[0035] Figure 5 for Figure 4 The structure of the base station antenna is exploded.

[0036] Figure 6 for Figure 5 A schematic diagram showing the connection relationship between the first feeder, the second feeder, and the power divider circuit of the first radiating unit.

[0037] Figure 7 for Figure 5 A schematic diagram showing the connection relationship between the first feeder, the second feeder, and the power divider circuit of the second radiating unit.

[0038] Figure 8 for Figure 4A cross-sectional view of the base station antenna.

[0039] Figure 9 This is a schematic diagram of the structure of a base station antenna according to another embodiment.

[0040] Figure 10 This is a schematic diagram of the structure of a radiation unit in another embodiment.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100, Radiation unit; 100a, First radiation unit; 100b, Second radiation unit; 110, Radiation arm; 111, Hollowed-out area; 110a, First radiation arm; 110b, Second radiation arm; 120, Support member; 120a, First support member; 120b, Second support member; 120c, Third support member; 120d, Fourth support member; 130, Grounding member; 131, First fixing hole; 130a, First grounding member; 130b, Second grounding member; 130c, Third grounding member; 130d, Fourth grounding member; 151, First power supply member; 152, Second power supply member;

[0043] 200. Reflector; 201. Second fixing hole;

[0044] 310, First branch; 311, First probe; 312, First output terminal; 320, Second branch; 321, Second probe; 322, Second output terminal; 301, First formation; 302, Second formation; 302a, Fifth connecting hole; 303, Third connecting hole; 330, Fastener;

[0045] 400, First insulating component; 401, Second connecting hole; 402, Clearance hole;

[0046] 500, Second insulating component; 501, Fourth connecting hole;

[0047] 610. First phase-shifting cavity; 620. Second phase-shifting cavity;

[0048] 700, coupling ring;

[0049] 10. High-frequency radiation unit; 20. Low-frequency radiation unit. Detailed Implementation

[0050] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0051] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0052] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0054] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0056] Please refer to Figure 1 One embodiment of this application provides a base station antenna, which includes a radiating element 100 and a reflector 200.

[0057] The radiation unit 100 includes two radiation arms 110 arranged along a first polarization direction and two radiation arms 110 arranged along a second polarization direction, the second polarization direction being orthogonal to the first polarization direction.

[0058] like Figure 1 As shown, the two radiating arms 110 arranged along the first polarization direction are designated as first radiating arm 110a and third radiating arm 110c. The two radiating arms 110 arranged along the second polarization direction are designated as second radiating arm 110b and fourth radiating arm 110d. For example, the first polarization direction is +45° polarization, and the second polarization direction is -45° polarization. Alternatively, the first polarization direction is -45° polarization, and the second polarization direction is +45° polarization.

[0059] The radiating unit 100 also includes four support members 120 and four grounding members 130, with the radiating arms 110, support members 120, and grounding members 130 arranged in a one-to-one correspondence. The first radiating arm 110a corresponds to the first support member 120a and the first grounding member 130a. The second radiating arm 110b corresponds to the second support member 120b and the second grounding member 130b. The third radiating arm 110c corresponds to the third support member 120c and the third grounding member 130c. The fourth radiating arm 110d corresponds to the fourth support member 120d and the fourth grounding member 130d. (Further details omitted) Figure 2 The corresponding radiating arm 110, support member 120, and grounding member 130 are integrated structures, thus the radiating arm 110 and the grounding member 130 are electrically connected through the support member 120. Four radiating arms 110 correspond to four integrated structures. An integrated structure is, for example, a one-piece molded sheet metal structure.

[0060] One end of the support member 120 is connected to the corresponding radiating arm 110, and the support member 120 is bent relative to the radiating arm 110 towards the reflector 200. One end of the grounding member 130 is connected to the end of the corresponding support member 120 away from the radiating arm 110. The grounding member 130 is bent relative to the support member 120 so that the grounding member 130 is opposite to the reflector. Specifically, the grounding member 130 is located at the end of the corresponding support member 120 near the reflector 200, and the radiating arm 110 is located at the end of the corresponding support member 120 away from the reflector 200.

[0061] Specifically, during processing, the corresponding radiating arm 110, support member 120, and grounding member 130 can be integrally formed into a structure where the three are on the same plane. Then, the support member 120 is bent relative to the radiating arm 110, and the grounding member 130 is bent relative to the support member 120, thereby forming... Figure 2 The structure shown.

[0062] like Figure 1 As shown, optionally, the ends of two radiating arms 110 arranged along the first polarization direction that are close to each other are connected to the corresponding support members 120, and the ends of two radiating arms 110 arranged along the second polarization direction that are close to each other are connected to the corresponding support members 120, so that the four support members 120 are located in positions where the four radiating arms 110 are close to each other. The two grounding members 130 corresponding to the two radiating arms 110 arranged along the first polarization direction are bent relative to the two support members 120 in a direction away from each other. The two grounding members 130 corresponding to the two radiating arms 110 arranged along the second polarization direction are bent relative to the two support members 120 in a direction away from each other.

[0063] The grounding component 130 abuts against the reflector 200 to achieve grounding of the grounding component 130. Specifically, the reflector 200 is made of metal, and the abutment between the grounding component 130 and the reflector 200 enables an electrical connection between the grounding component 130 and the reflector 200, thereby achieving grounding of the grounding component 130.

[0064] Each grounding element 130 can be directly or indirectly connected to the reflector 200. Each grounding element 130 is grounded by directly or indirectly connecting to the reflector 200.

[0065] Direct contact means that the grounding component 130 is in contact with the reflector 200, and no other components are provided between the grounding component 130 and the reflector 200. Indirect contact means that other components are provided between the grounding component 130 and the reflector 200, and the grounding component 130 abuts against the reflector 200 through the other components between the two.

[0066] The radiation unit 100 also includes a fixing member, and at least one grounding member 130 is connected to the reflector 200 through the fixing member, thereby enabling the integrated radiation arm 110, support member 120 and grounding member 130 to be connected to the reflector 200. Moreover, the radiation arm 110 can be supported on one side of the reflector 200 by the support member 120.

[0067] Specifically, one grounding component 130 can be connected to the reflector 200 through a fixing component, or two, three or four grounding components 130 can be connected to the reflector 200 through their respective fixing components.

[0068] In the aforementioned base station antenna, one end of the support member 120 is connected to the corresponding radiating arm 110. The support member 120 is bent relative to the radiating arm 110 towards the reflector 200, thereby making the end of the support member 120 away from the radiating arm 110 closer to the reflector 200. One end of the grounding member 130 is connected to the end of the corresponding support member 120 away from the radiating arm 110. The grounding member 130 is bent relative to the support member 120, thereby enabling the grounding member 130 to be positioned close to the reflector 200 and positioned opposite to the reflector 200. This facilitates the grounding member 130 to abut against the reflector 200, achieving grounding of the grounding member 130, and facilitating connection between the grounding member 130 and the reflector 200. Since the corresponding radiating arm 110, support member 120, and grounding member 130 are an integrated structure, the grounding of the grounding member 130 means that the radiating unit 100 is grounded. Furthermore, at least one grounding component 130 is connected to the reflector 200 via a fixing component, thereby fixing the integrated structure to the reflector 200. This ensures that the grounding component 130 can stably contact the reflector 200, achieving reliable grounding of the radiating element 100. Therefore, the grounding of the radiating element 100 of the aforementioned base station antenna is achieved through the contact between the grounding component 130 and the reflector 200, eliminating the need for welding and electroplating, thus aligning more closely with the trend of green and environmentally friendly development (compared to existing technologies).

[0069] Please refer to Figure 1 In one embodiment, the grounding member 130, which is connected to the reflector 200 via a fixing member, has a first fixing hole 131, and the reflector 200 has a second fixing hole 201. The radiation unit 100 includes a fixing member, which is correspondingly provided with the first fixing hole 131 and the second fixing hole 201. The fixing member (not shown) passes through the corresponding first fixing hole 131 and second fixing hole 201 to connect the grounding member 130 to the reflector 200.

[0070] Optionally, the fastener can be a bolt, and the second fixing hole 201 can be a threaded hole. The bolt of the fastener is threaded into the second fixing hole 201, and the bolt head of the fastener abuts against the grounding member 130, thereby connecting the grounding member 130 to the reflector 200.

[0071] Please refer to Figure 1 In one embodiment, the four grounding elements 130 of the radiation unit 100 are respectively in contact with the reflector 200, thereby grounding the four grounding elements 130. Since the grounding elements 130 are in contact with the reflector 200, it is not necessary to use other intermediate conductive elements to make the grounding elements 130 in contact with the reflector 200.

[0072] Please refer to Figure 3 In one embodiment, the base station antenna further includes: a first phase-shifting cavity 610, a second phase-shifting cavity 620, a first phase-shifting circuit, and a second phase-shifting circuit. The first phase-shifting cavity 610 and the second phase-shifting cavity 620 are respectively connected to the side of the reflector 200 facing away from the radiating element 100. The first phase-shifting circuit is disposed in the first phase-shifting cavity 610, and the second phase-shifting circuit is disposed in the second phase-shifting cavity 620. The radiating element 100 includes a first feed element 151 for feeding two radiating arms 110 arranged along a first polarization direction and a second feed element 152 for feeding two radiating arms 110 arranged along a second polarization direction. One end of the first feed element 151 is coupled or directly connected to the two radiating arms 110 arranged along the first polarization direction, and the other end is connected to the first phase-shifting circuit, thereby enabling it to feed the two radiating arms arranged along the first polarization direction. One end of the second feeder 152 is coupled or directly connected to the two radiating arms arranged along the second polarization direction, and the other end is connected to the second phase shifting circuit, thereby enabling it to feed the two radiating arms arranged along the second polarization direction.

[0073] Please combine Figure 4 and Figure 5 In some embodiments, the number of radiating elements 100 is at least two. Combined with... Figure 6 and Figure 7 The radiation unit 100 includes a first feeder 151 for feeding two radiation arms 110 arranged along a first polarization direction and a second feeder 152 for feeding two radiation arms 110 arranged along a second polarization direction.

[0074] The base station antenna includes a power divider circuit, which comprises a first branch 310 and a second branch 320. The first branch 310 has two first output terminals 312, and the second branch 320 has two second output terminals 322. The two first output terminals 312 are respectively connected to the first feed element 151 of two adjacent radiating elements 100. The two second output terminals 322 are respectively connected to the two second feed elements 152 of two adjacent radiating elements 100.

[0075] Specifically, one end of the first feed element 151 is coupled or directly connected to two radiating arms 110 arranged along the first polarization direction, thereby enabling it to feed power to the two radiating arms 110 arranged along the first polarization direction. One end of the second feed element 152 is coupled or directly connected to two radiating arms 110 arranged along the second polarization direction, thereby enabling it to feed power to the two radiating arms 110 arranged along the second polarization direction.

[0076] Two adjacent radiating units 100 are defined as the first radiating unit 100a and the second radiating unit 100b, respectively. One first output terminal 312 of the first branch 310 is connected to the end of the first feeder 151 of the first radiating unit 100a away from the radiating arm 110, and the other first output terminal 312 of the first branch 310 is connected to the end of the first feeder 151 of the second radiating unit 100b away from the radiating arm 110, so that the two first output terminals 312 of the first branch 310 can output signals to the first feeders 151 of the two adjacent radiating units 100, respectively.

[0077] One second output terminal 322 of the second branch 320 is connected to the end of the second feeder 152 of the first radiation unit 100a away from the radiation arm 110, and the other second output terminal 322 of the second branch 320 is connected to the end of the second feeder 152 of the second radiation unit 100b away from the radiation arm 110, so that the two second output terminals 322 of the second branch 320 can output signals to the second feeders 152 of the two adjacent radiation units 100 respectively.

[0078] refer to Figure 8 In some embodiments, the base station antenna further includes: a first phase-shifting cavity 610, a second phase-shifting cavity 620, a first phase-shifting circuit, and a second phase-shifting circuit. The first phase-shifting cavity 610 and the second phase-shifting cavity 620 are respectively connected to the side of the reflector 200 facing away from the radiating element 100. The first phase-shifting circuit is disposed in the first phase-shifting cavity 610, and the second phase-shifting circuit is disposed in the second phase-shifting cavity 620.

[0079] Combination Figure 4 and Figure 5 The base station antenna includes a power divider circuit, which comprises a first branch 310 and a second branch 320. The first branch 310 has a first input terminal, and the second branch 320 has a second input terminal. The first input terminal is connected to a first phase-shifting circuit, and the second input terminal is connected to a second phase-shifting circuit. Thus, the first phase-shifting circuit can transmit signals to the first branch 310 through the first input terminal, and the second phase-shifting circuit can input signals to the second branch 320 through the second input terminal.

[0080] In this embodiment, the end of the first power supply 151 away from the radiation arm 110 is indirectly connected to the first phase shifting circuit through the first branch 310, and the end of the second power supply 152 away from the radiation arm 110 is indirectly connected to the second phase shifting circuit through the second branch 320.

[0081] In related technologies, the electric field excited by the power divider circuit in a base station antenna superimposed on the electromagnetic waves radiated by the radiating element causes distortion and deformation of the radiation pattern. To improve this problem, please refer to... Figure 4 In some embodiments of this application, the power divider circuit is arranged parallel to and spaced apart from the reflector 200, so that the reflector 200 can form a first ground layer 301 for the power divider circuit. Two adjacent radiating units 100 are defined as a first radiating unit 100a and a second radiating unit 100b, respectively. Two grounding elements 130 of the first radiating unit 100a are connected one-to-one with two grounding elements 130 of the second radiating unit 100b to form a second ground layer 302. The power divider circuit is located between the first ground layer 301 and the second ground layer 302 to form a stripline transmission line. The second ground layer 302 is spaced apart from the power divider circuit. The projection of the second ground layer 302 onto the reflector 200 overlaps the projection of the power divider circuit onto the reflector 200.

[0082] In this embodiment, the reflector 200 forms the first ground layer 301 of the power divider circuit. The power divider circuit is located between the first ground layer 301 and the second ground layer 302. The projection of the second ground layer 302 onto the reflector 200 covers the projection of the power divider circuit onto the reflector 200, that is, the second ground layer 302 can cover the power divider circuit on the side facing away from the reflector 200. In this way, the first ground layer 301 and the second ground layer 302 can respectively form shielding structures on both sides of the power divider circuit, thereby significantly reducing the influence of the power divider circuit on the radiation pattern, and thus improving the distortion and deformation problems of the radiation pattern.

[0083] Furthermore, since the second ground layer 302 is spaced apart from the power divider circuit, it is also spaced apart from the reflector 200. To enable the grounding element 130 in the second ground layer 302 to be electrically connected to the reflector 200 for grounding, each grounding element 130 in the second ground layer 302 is provided with a conductive element (not shown). The conductive element contacts and abuts against the reflector 200, thereby enabling the grounding element 130 to be electrically connected to the reflector 200 through the conductive element, and thus achieving grounding of the grounding element 130. The grounding element 130 and the conductive element can be an integrally formed structure or separately formed and then connected. One end of the conductive element is connected to the grounding element 130, and the other end abuts against the reflector 200. In this embodiment, the grounding element 130 in the second ground layer 302 is indirectly abutted against the reflector 200 via the conductive element.

[0084] Understandably, the second stratum 302 includes two grounding elements 130 of the first radiating unit 100a and two grounding elements 130 of the second radiating unit 100b.

[0085] Specifically, in combination Figures 3 to 5 The four grounding elements 130 of the radiation unit 100 are defined as the first grounding element 130a, the second grounding element 130b, the third grounding element 130c, and the fourth grounding element 130d. Figures 3 to 5 In the illustrated embodiment, the third grounding element 130c of the first radiating unit 100a is connected to the third grounding element 130c of the second radiating unit 100b, and the fourth grounding element 130d of the first radiating unit 100a is connected to the fourth grounding element 130d of the second radiating unit 100b. The second ground layer 302 includes the third grounding element 130c and the fourth grounding element 130d of the first radiating unit 100a, as well as the third grounding element 130c and the fourth grounding element 130d of the second radiating unit 100b.

[0086] It should be noted that the four grounding elements 130 in the second stratum 302 can be any one of the grounding elements 130 of the first radiating unit 100a connected to any one of the grounding elements 130 of the second radiating unit 100b, and any other grounding element 130 of the first radiating unit 100a connected to any other grounding element 130 of the second radiating unit 100b. The four grounding elements 130 in the second stratum 302 are not limited to the third grounding element 130c and the fourth grounding element 130d of the first radiating unit 100a and the third grounding element 130c and the fourth grounding element 130d of the second radiating unit 100b.

[0087] In one embodiment, the width of the grounding element 130 in the second ground layer 302 is 4 to 5 times the width of the stripline of the power divider circuit, so that the second ground layer 302 can reliably cover the power divider circuit, thereby ensuring that the second ground layer 302 can adequately shield the power divider circuit.

[0088] Combination Figures 4 to 5 In one embodiment, the other two grounding members 130 of the first radiation unit 100a (in addition to the two grounding members 130 in the second layer 302) are in contact with the reflector 200, and the other two grounding members 130 are respectively connected to the reflector 200 through corresponding fixing members 140, so that the first radiation unit 100a as a whole can be fixed to the reflector 200.

[0089] It is understandable that, since a power divider circuit is provided between the second ground layer 302 and the reflector 200, and the other two grounding components 130 of the first radiation unit 100a (excluding the two grounding components 130 in the second ground layer 302) are in contact with the reflector 200, the height of the other two grounding components 130 is lower than that of the grounding component 130 in the second ground layer 302 (with the surface of the reflector 200 near the power divider circuit as the zero height reference).

[0090] The second radiation unit 100b has two additional grounding elements 130 (other than the two grounding elements 130 in the second stratum 302) that are in contact with the reflector 200. The two additional grounding elements 130 are connected to the reflector 200 through corresponding fasteners 140, thereby fixing the second radiation unit 100b to the reflector 200 as a whole.

[0091] It is understandable that, since a power divider circuit is provided between the second ground layer 302 and the reflector 200, and the other two grounding elements 130 of the second radiation unit 100b (in addition to the two grounding elements 130 in the second ground layer 302) are in contact with the reflector 200, the other two grounding elements 130 are lower than the grounding elements 130 in the second ground layer 302 (with the surface of the reflector 200 near the power divider circuit as the zero height reference).

[0092] exist Figures 4 to 5 In the illustrated embodiment, the other two grounding elements 130 of the first radiating unit 100a (excluding the two grounding elements 130 in the second ground layer 302) are the first grounding element 130a and the second grounding element 130b. The other two grounding elements 130 of the second radiating unit 100b (excluding the two grounding elements 130 in the second ground layer 302) are the first grounding element 130a and the second grounding element 130b.

[0093] Please combine Figures 4 to 5 In some embodiments, in the second ground layer 302, the grounding component 130 of the first radiating unit 100a and the grounding component 130 of the corresponding connected second radiating unit 100b are an integral structure (i.e., integrally formed). This eliminates the need for connection through other connectors or welding, making it more environmentally friendly and easier to process.

[0094] In the second stratum 302, the grounding component 130 of the first radiating unit 100a and the grounding component 130 of the corresponding connected second radiating unit 100b have the same bending direction relative to their respective connected support members 120. This allows the grounding component 130 of the first radiating unit 100a and the grounding component 130 of the corresponding connected second radiating unit 100b to be processed into an integral planar structure before being bent in the same direction, thus facilitating bending.

[0095] exist Figures 4 to 5 In the illustrated embodiment, the third grounding element 130c of the first radiating unit 100a and the third grounding element 130c of the second radiating unit 100b are integrated structures, and the fourth grounding element 130d of the first radiating unit 100a and the fourth grounding element 130d of the second radiating unit 100b are integrated structures.

[0096] like Figure 4 As shown, the bending direction of the third grounding member 130c of the first radiating unit 100a relative to the corresponding support member 120 (third support member) is the same as the bending direction of the third grounding member 130c of the second radiating unit 100b relative to the corresponding support member 120 (third support member). Therefore, by making the third grounding member 130c of the first radiating unit 100a and the third grounding member 130c of the second radiating unit 100b into an integral planar structure, and then bending the two third grounding members 130c in the same direction, the desired result can be obtained. Figure 4 The two third grounding elements 130c in the second stratum 302 shown. This facilitates bending.

[0097] The bending direction of the fourth grounding member 130d of the first radiating unit 100a relative to the corresponding support member 120 (fourth support member) is the same as the bending direction of the fourth grounding member 130d of the second radiating unit 100b relative to the corresponding support member 120 (fourth support member). Therefore, by making the fourth grounding member 130d of the first radiating unit 100a and the fourth grounding member 130d of the second radiating unit 100b into an integral planar structure, and then bending the two fourth grounding members 130d in the same direction, the desired result can be obtained. Figure 4 The two fourth grounding elements 130d in the second stratum 302 shown facilitate bending.

[0098] Please refer to Figure 4 In some embodiments, the base station antenna includes a first insulating member 400 and a second insulating member 500. The first insulating member 400 is disposed between the reflector 200 and the power divider circuit, such that the reflector 200 and the power divider circuit are spaced apart. The second insulating member 500 is disposed between the second ground layer 302 and the power divider circuit, such that the second ground layer 302 and the power divider circuit are spaced apart.

[0099] Specifically, one side of the first insulating member 400 can contact the reflector 200, and the other side can contact the power divider circuit, thereby supporting the power divider circuit and maintaining the distance between the reflector 200 and the power divider circuit. One side of the second insulating member 500 can contact the power divider circuit, and the other side can contact the second ground layer 302, thereby supporting the second ground layer 302 and maintaining the distance between the second ground layer 302 and the power divider circuit.

[0100] In one embodiment, the first insulating member 400 and the second insulating member 500 are respectively provided with clearance spaces to avoid the grounding member 130 that contacts the reflector 200.

[0101] The second insulating element 500 can be made of plastic. The second insulating element 500 can be a strip-shaped polygonal structure. The area enclosed by the second insulating element 500 is the clearance space, which can avoid contact with the grounding components 130 that come into contact with the reflector 200. For example... Figures 4 to 5 In the illustrated embodiment, the first grounding element 130a and the second grounding element 130b of the second radiating unit 100b are located within the area enclosed by the second insulating element 500, thereby facilitating contact between the two grounding elements 130 and the reflector 200 without obstruction by the second insulating element 500. Alternatively, the first grounding element 130a and the second grounding element 130b of the first radiating unit 100a are located outside the area enclosed by the second insulating element 500, also facilitating contact between them with the reflector 200 without obstruction by the second insulating element 500.

[0102] The first insulating element 400 may be made of plastic. The first insulating element 400 may be plate-shaped. The first insulating element 400 may have a clearance hole 402 to avoid contact with the grounding element 130 that comes into contact with the reflector 200.

[0103] For example Figures 4 to 5 In the illustrated embodiment, the first grounding member 130a and the second grounding member 130b of the second radiating unit 100b are located within the area enclosed by the outer contour of the first insulating member 400. Therefore, the first insulating member 400 has clearance holes 402 to avoid the two grounding members, thereby facilitating contact between the two grounding members 130 and the reflector 200 without obstruction by the first insulating member 400. The first insulating member 400 has two clearance holes 402, one for avoiding the grounding member 130 of the first radiating unit 100a and the other for avoiding the grounding member 130 of the second radiating unit 100b.

[0104] Of course, by changing the structure of the first insulating member 400 and the second insulating member 500, each grounding member 130 that contacts the reflector 200 is located outside the outline of the first insulating member 400 and the second insulating member 500, then there is no need to open the clearance hole.

[0105] Please refer to Figure 4 In some embodiments, the reflector 200 is provided with a first connection hole (not shown), the first insulating member 400 is provided with a second connection hole 401, the power divider circuit is provided with a third connection hole 303, the second insulating member 500 is provided with a fourth connection hole 501, and the second ground layer 302 is provided with a fifth connection hole 302a.

[0106] The base station antenna includes a fastener 330. The fastener 330 passes through the first connecting hole, the second connecting hole 401, the third connecting hole 303, the fourth connecting hole 501, and the fifth connecting hole 302a to fix the reflector 200, the first insulating component 400, the power divider circuit, the second insulating component 500, and the second ground layer 302.

[0107] In some embodiments, the fastener 330 may be a thermoplastic component, capable of melting upon heating and solidifying upon cooling. During fixing, the fastener 330 is first inserted through the first connecting hole, the second connecting hole 401, the third connecting hole 303, the fourth connecting hole 501, and the fifth connecting hole 302a, and then both ends of the fastener 330 are heated and melted. After the ends of the fastener 330 are heated and melted, the molten portion accumulates to form a limiting head (not shown), and the limiting head solidifies upon cooling. The limiting head is generally spherical and protrudes radially along the fastener 330. The limiting head at the end of the fastener 330 extending out of the fifth connecting hole 302a is located on the side of the second stratum 302 facing away from the reflector 200 and cannot pass through the fifth connecting hole 302a, thereby limiting the end of the fastener 330 extending out of the fifth connecting hole 302a. The limiting head of the end of the fastener 330 extending from the first connecting hole is located on the side of the reflector 200 facing away from the second ground layer 302 and cannot pass through the first connecting hole, thus limiting the end of the fastener 330 extending from the first connecting hole. In this way, both ends of the fastener 330 are limited, thereby fixing the reflector 200, the first insulator 400, the power divider circuit, the second insulator 500, and the second ground layer 302 together. The fastener 330 is made of materials such as plastic.

[0108] In other embodiments, the fastener 330 may also be of other forms, such as a bolt, and the first connecting hole may be a threaded hole. The screw of the fastener 330 is threaded into the first connecting hole, and the bolt head of the fastener 330 abuts against the second ground layer 302, thereby fixing the reflector 200, the first insulator 400, the power divider circuit, the second insulator 500, and the second ground layer 302 together.

[0109] Combination Figure 5 , Figure 6 and Figure 7 In some embodiments, the first branch 310 and the first feed element 151 of the two adjacent radiating units 100 are integral striplines. The second branch 320 and the second feed element 152 of the two adjacent radiating units 100 are integral striplines. The integral stripline is, for example, a sheet metal stripline.

[0110] The first branch 310 and the first feeding members 151 of the first radiating unit 100a and the first feeding members 151 of the second radiating unit 100b are an integral strip line, thus eliminating the need to connect the first branch 310 with the two first feeding members 151 by other connecting components or welding, etc., and further conforming to the trend of environmental protection and being convenient for processing.

[0111] The second branch 320 and the second feeding members 152 of the first radiating unit 100a and the second feeding members 152 of the second radiating unit 100b are an integral strip line, thus eliminating the need to connect the second branch 320 with the two second feeding members 152 by other connecting components or welding, etc., and further conforming to the trend of environmental protection and being convenient for processing.

[0112] Please refer to Figures 5 to 8 , in an embodiment, the first branch 310 has a first input end, and a first probe 311 is arranged at the first input end. The second branch 320 has a second input end, and a second probe 321 is arranged at the second input end. One end of the first probe 311 passes through the reflector 200 and is connected to the first phase shifter circuit. One end of the second probe 321 passes through the reflector 200 and is connected to the second phase shifter circuit. Through the first probe 311 and the second probe 321, it is convenient to connect the first branch 310 with the first phase shifter circuit and convenient to connect the second branch 320 with the second phase shifter circuit.

[0113] Please refer to Figure 1 , in some embodiments, the radiating arm 110 is provided with a hollowed-out area 111, and each radiating arm 110 is a polygonal structure, such as a square. Thus, the four radiating arms 110 are arranged to form a structure roughly in the shape of a "field", and the radiation unit with this structural form has a relatively wide operating bandwidth, thereby being able to expand the application range of the base station antenna.

[0114] Please refer to Figure 9 , in some embodiments, the base station antenna includes a plurality of high-frequency radiating units 10 and low-frequency radiating units 20, and the plurality of high-frequency radiating units 10 surround the periphery of the low-frequency radiating unit 20. The high-frequency radiating unit 10 is the radiating unit 100 in any one of the above embodiments. Moreover, referring to Figure 10 , the high-frequency radiating unit 10 further includes a coupling loop 700, the coupling loop 700 surrounds the periphery of one end where the support member 120 is connected to the radiating arm 110, and the distance from the coupling loop 700 to the reflector 200 is less than the distance from the radiating arm 110 to the reflector 200 (taking the surface of the reflector 200 close to the radiating arm 200 as the height reference zero position, the coupling loop 700 is lower than the radiating arm 110).

[0115] The coupling ring 700 and the radiation arm 110 can be connected by other connectors. By setting the coupling ring 700, an isolation structure can be formed outside the high-frequency radiation unit 10, thereby isolating the radiation energy of the low-frequency radiation unit 20 as much as possible and reducing the influence between the high-frequency and low-frequency radiation units.

[0116] Optionally, the perimeter of the outer contour of the coupling ring 700 is 0.9 to 1.1 times the wavelength of the center frequency of the operating frequency band of the low-frequency radiation element 20. In this way, the isolation effect is better, and the influence of the low-frequency radiation element 20 on the high-frequency radiation element 10 can be ignored.

[0117] The coupling ring 700 can be rectangular, circular, polygonal, or other shapes.

[0118] The operating frequency band of the high-frequency radiation unit 10 is higher than that of the low-frequency radiation unit 20, but this application does not limit the operating frequency bands of the high-frequency radiation unit 10 and the low-frequency radiation unit 20.

[0119] This application also provides a base station, including the base station antenna described in any of the above embodiments, and further including an antenna cover, the antenna cover being connected to the reflector and covering the radiating element.

[0120] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0121] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A base station antenna, characterized in that, The base station antenna includes a radiating element (100) and a reflector (200); the radiating element (100) includes two radiating arms (110) arranged along a first polarization direction and two radiating arms (110) arranged along a second polarization direction, the second polarization direction being orthogonal to the first polarization direction; The radiation unit (100) includes four support members (120) and four grounding members (130). The radiation arm (110), the support member (120) and the grounding member (130) are arranged in a one-to-one correspondence. The corresponding radiation arm (110), the support member (120) and the grounding member (130) are an integral structure. One end of the support member (120) is connected to the corresponding radiating arm (110), and the support member (120) is bent relative to the radiating arm (110) towards the reflector (200); one end of the grounding member (130) is connected to the end of the corresponding support member (120) away from the radiating arm (110); the grounding member (130) is bent relative to the support member (120) so that the grounding member (130) is opposite to the reflector; The grounding component (130) abuts against the reflector (200); the radiation unit (100) also includes a fixing component, and at least one of the grounding components (130) is connected to the reflector (200) through a corresponding fixing component; The base station antenna includes a power divider circuit, which includes a first branch (310) and a second branch (320). The power divider circuit is parallel to and spaced apart from the reflector (200) so that the reflector (200) forms the first ground layer (301) of the power divider circuit. The number of radiation units (100) is at least two; two adjacent radiation units (100) are defined as a first radiation unit (100a) and a second radiation unit (100b); two grounding elements (130) of the first radiation unit (100a) and two grounding elements (130) of the second radiation unit (100b) are connected in a one-to-one correspondence to form a second ground layer (302); The power divider circuit is located between the first ground layer (301) and the second ground layer (302) to form a stripline transmission line; the second ground layer (302) is spaced apart from the power divider circuit; the projection of the second ground layer (302) on the reflector (200) covers the projection of the power divider circuit on the reflector (200).

2. The base station antenna according to claim 1, characterized in that, The grounding member (130) connected to the reflector (200) via the fixing member is provided with a first fixing hole (131), and the reflector (200) is provided with a second fixing hole (201). The fixing member passes through the corresponding first fixing hole (131) and second fixing hole (201) to connect the grounding member (130) to the reflector (200).

3. The base station antenna according to claim 1, characterized in that, The four grounding elements (130) in the radiation unit (100) are in contact with the reflector (200).

4. The base station antenna according to claim 1, characterized in that, The radiation unit (100) includes a first feeder (151) for feeding two radiation arms (110) arranged along the first polarization direction and a second feeder (152) for feeding two radiation arms (110) arranged along the second polarization direction; The first branch (310) has two first output terminals (312), and the second branch (320) has two second output terminals (322); the two first output terminals (312) are respectively connected to the first feeder (151) of the two adjacent radiation units (100); the two second output terminals (322) are respectively connected to the two second feeders (152) of the two adjacent radiation units (100).

5. The base station antenna according to claim 1, characterized in that, A conductive element is provided on the grounding element (130) in the second stratum (302), and the conductive element is in contact with the reflector (200).

6. The base station antenna according to claim 1, characterized in that, The other two grounding members (130) of the first radiating unit (100a) are in contact with the reflector (200) respectively, and are connected to the reflector (200) respectively through the corresponding fixing members; The other two grounding members (130) of the second radiation unit (100b) are in contact with the reflector (200) respectively, and are connected to the reflector (200) respectively through the corresponding fixing members.

7. The base station antenna according to claim 1, characterized in that, In the second stratum (302), the grounding element (130) of the first radiating unit (100a) and the grounding element (130) of the corresponding connected second radiating unit (100b) are an integral structure.

8. The base station antenna according to claim 7, characterized in that, In the second stratum (302), the grounding member (130) of the first radiating unit (100a) and the grounding member (130) of the corresponding connected second radiating unit (100b) have the same bending direction relative to the support member (120) they are connected to.

9. The base station antenna according to claim 1, characterized in that, The base station antenna includes a first insulating element (400) and a second insulating element (500); the first insulating element (400) is disposed between the reflector (200) and the power divider circuit, such that the reflector (200) and the power divider circuit are spaced apart; the second insulating element (500) is disposed between the second ground layer (302) and the power divider circuit, such that the second ground layer (302) and the power divider circuit are spaced apart.

10. The base station antenna according to claim 9, characterized in that, The first insulating member (400) and the second insulating member (500) are respectively provided with clearance spaces to avoid the grounding member (130) that comes into contact with the reflector (200).

11. The base station antenna according to claim 9, characterized in that, The reflector (200) is provided with a first connection hole, the first insulating component (400) is provided with a second connection hole (401), the power divider circuit is provided with a third connection hole (303), the second insulating component (500) is provided with a fourth connection hole (501), and the second ground layer (302) is provided with a fifth connection hole (302a). The base station antenna includes a fastener (330) which passes through the first connecting hole, the second connecting hole (401), the third connecting hole (303), the fourth connecting hole (501), and the fifth connecting hole (302a) to fix the reflector (200), the first insulating member (400), the power divider circuit, the second insulating member (500), and the second ground layer (302).

12. The base station antenna according to claim 4, characterized in that, The first branch (310) and the first feeder (151) of the two adjacent radiation units (100) are integrated into one structure; the second branch (320) and the second feeder (152) of the two adjacent radiation units (100) are integrated into one structure.

13. The base station antenna according to claim 4, characterized in that, The base station antenna further includes: a first phase-shifting cavity (610), a second phase-shifting cavity (620), a first phase-shifting circuit, and a second phase-shifting circuit. The first phase-shifting cavity (610) and the second phase-shifting cavity (620) are respectively connected to the side of the reflector (200) facing away from the radiating unit (100). The first phase-shifting circuit is disposed in the first phase-shifting cavity (610), and the second phase-shifting circuit is disposed in the second phase-shifting cavity (620). The first branch (310) has a first input terminal and a first probe (311) is provided on the first input terminal; the second branch (320) has a second input terminal and a second probe (321) is provided on the second input terminal; one end of the first probe (311) passes through the reflector (200) and is connected to the first phase shifting circuit; one end of the second probe (321) passes through the reflector (200) and is connected to the second phase shifting circuit.

14. A base station, characterized in that, The base station antenna includes any one of claims 1 to 13, and further includes an antenna cover, which is connected to the reflector (200) and covers the radiating element (100).

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