Base station antenna and base station

Abstract

The invention relates to a base station antenna and a base station. The base station antenna comprises a radiation unit and a reflection plate. The radiation unit comprises two radiation arms arranged along a first polarization direction and two radiation arms arranged along a second polarization direction, and the second polarization direction is orthogonal to the first polarization direction; the radiation unit comprises four supporting pieces and four grounding pieces, and the corresponding radiation arms, the supporting pieces and the grounding pieces are of an integrated structure; one end of each supporting piece is connected with the corresponding radiation arm, and the supporting pieces are bent towards the direction close to the reflecting plate relative to the radiation arms; one end of the grounding piece is connected with one end, far away from the radiation arm, of the corresponding supporting piece, and the grounding piece is bent relative to the supporting piece; the grounding piece abuts against the reflecting plate so that grounding of the grounding piece can be achieved. Grounding of the radiation unit is realized through abutting of the grounding piece and the reflecting plate. Welding is not needed, so that electroplating is avoided, and a green and environment-friendly development trend is better met.

Description

Technical Field

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

[0002] With the continuous development of communications, green, environmentally friendly, efficient, and limited antenna area multi-frequency fusion solutions have become the latest requirements for the development of base station antennas. On the one hand, green realization is to control the manufacturing of base station antennas, such as reducing electroplating and solder joints; on the other hand, it is to increase the effective radiation energy of the signal, thereby reducing the consumption of electrical energy, such as reducing the use of cables.

[0003] In the related art, the radiation unit of the base station antenna includes a radiation arm, a balun, and a feeder, etc. Among them, the balun includes a balun seat, on which a grounding layer is arranged. The grounding of the radiation unit is achieved by welding the grounding layer on the balun seat to the coaxial line or to an additional PCB circuit board. Electroplating is required during welding, which is not in line with the development trend of green environmental protection. Summary of the invention

[0004] Based on this, it is necessary to provide a base station antenna and base station to address the problem that the grounding of the radiation unit in the related technology needs to be achieved through welding, requires electroplating, and does not conform to the development trend of green environmental protection.

[0005] A base station antenna, comprising a radiation unit and a reflector; the radiation unit comprises two radiation arms arranged along a first polarization direction and two radiation 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 ground members, the radiation arms, the support members and the ground members are arranged in one-to-one correspondence, and the corresponding radiation arms, the support members and the ground members are an integrated structure;

[0007] One end of the support member is connected to the corresponding radiation arm, and the support member is bent relative to the radiation arm in a direction close to the reflection plate; one end of the grounding member is connected to an end of the corresponding support member away from the radiation arm; the grounding member is bent relative to the support member so that the grounding member is opposite to the reflection plate;

[0008] The grounding member is in contact with the reflecting plate; the radiation unit further comprises a fixing member, and at least one of the grounding members is connected to the reflecting plate via the corresponding fixing member.

[0009] In one embodiment, the grounding member connected to the reflecting plate through the fixing member is provided with a first fixing hole, and the reflecting plate is provided with a second fixing hole;

[0010] The fixing member is inserted into the corresponding first fixing hole and the second fixing hole so that the grounding member is connected to the reflecting plate.

[0011] In one embodiment, the four grounding members in the radiation unit are respectively in contact with the reflection plate.

[0012] In one embodiment, the number of the radiation units is at least two; the radiation unit includes a first feeding element for feeding the two radiation arms arranged along the first polarization direction and a second feeding element for feeding the two radiation arms arranged along the second polarization direction;

[0013] The base station antenna includes a power division circuit, which includes a first branch and a second branch, the first branch has two first output ends, and the second branch has two second output ends; the two first output ends are respectively connected to the first feeding components of two adjacent radiation units; the two second output ends are respectively connected to the two second feeding components of two adjacent radiation units.

[0014] In one embodiment, the power division circuit is arranged parallel to and spaced apart from the reflector plate, so that the reflector plate forms a first stratum of the power division circuit;

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

[0016] The power division circuit is located between the first stratum and the second stratum to form a stripline transmission line, and the second stratum is spaced apart from the power division circuit; a projection of the second stratum on the reflection plate covers a projection of the power division circuit on the reflection plate.

[0017] In one embodiment, a conductive member is disposed on the grounding member in the second stratum, and the conductive member is in contact with the reflecting plate.

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

[0019] The other two grounding members of the second radiation unit are in contact with the reflection plate respectively, and are connected to the reflection plate through the corresponding fixing members respectively.

[0020] In one embodiment, in the second ground layer, the grounding member of the first radiation unit and the grounding member of the correspondingly connected second radiation unit are an integrated structure.

[0021] In one embodiment, in the second ground layer, the grounding member of the first radiation unit and the grounding member of the correspondingly connected second radiation unit have the same bending direction relative to the supporting member to which they are connected.

[0022] In one embodiment, the base station antenna includes a first insulating member and a second insulating member; the first insulating member is arranged between the reflecting plate and the power division circuit so that the reflecting plate and the power division circuit are spaced apart; the second insulating member is arranged between the second stratum and the power division circuit so that the second stratum and the power division circuit are spaced apart.

[0023] In one embodiment, the first insulating member and the second insulating member are respectively provided with an escape space to avoid the grounding member contacting the reflection plate.

[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 dividing 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, which are passed 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 member, the power divider circuit, the second insulating member, and the second ground layer.

[0026] In one embodiment, the first branch and the first feeding components of two adjacent radiation units are an integrated structure; the second branch and the second feeding components of two adjacent radiation units are an integrated structure.

[0027] In one embodiment, the base station antenna further includes: a first phase shift cavity, a second phase shift cavity, a first phase shift circuit and a second phase shift circuit, the first phase shift cavity and the second phase shift cavity are respectively connected to a side of the reflector that is away from the radiation unit; the first phase shift circuit is disposed in the first phase shift cavity, and the second phase shift circuit is disposed in the second phase shift cavity;

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

[0029] A base station comprises the base station antenna according to any one of the above embodiments, and further comprises an antenna cover, wherein the antenna cover is connected to the reflector and covers the radiation unit.

[0030] In the above-mentioned base station antenna and base station, one end of the support member is connected to the corresponding radiation arm, and the support member is bent relative to the radiation arm in the direction close to the reflector, so that the end of the support member away from the radiation arm is closer to the reflector. One end of the grounding member is connected to the end of the corresponding support member away from the radiation arm, and the grounding member is bent relative to the support member, so that the position of the grounding member can be close to the reflector and can be arranged relative to the reflector, thereby facilitating the abutment of the grounding member with the reflector to achieve grounding of the grounding member, and facilitating the connection of the grounding member with the reflector. Since the corresponding radiation arm, support member and grounding member are an integrated structure, the grounding member is grounded, that is, the radiation unit is grounded. Moreover, at least one grounding member is connected to the reflector through a fixing member, thereby achieving the connection of the integrated structure with the reflector, thereby enabling the grounding member to stably abut against the reflector, that is, the radiation unit is reliably grounded. It can be seen that the grounding of the radiation unit of the above-mentioned base station antenna is achieved by abutting the grounding member with the reflector, without the need for welding, thereby eliminating electroplating, and thus more in line with the development trend of green environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The figure is a schematic structural diagram of a base station antenna according to an embodiment.

[0032] Figure 2 for Figure 1 Schematic diagram of the connection structure of the radiation arm, support member and grounding member of the base station antenna.

[0033] Figure 3 for Figure 1 A cross-sectional view of a base station antenna is shown.

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

[0035] Figure 5 for Figure 4 Exploded diagram of the structure of a base station antenna.

[0036] Figure 6 for Figure 5 Schematic diagram of the connection relationship between the first feeding element, the second feeding element and the power division circuit of the first radiating unit in FIG.

[0037] Figure 7 for Figure 5 Schematic diagram of the connection relationship between the first feeding element, the second feeding element and the power division circuit of the second radiating unit in FIG.

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

[0039] Fig. 9 The figure is a schematic structural diagram of a base station antenna according to another embodiment.

[0040] Fig.10 It is a schematic structural diagram of a radiation unit in yet another embodiment.

[0041] Description of reference numerals:

[0042] 100, radiation unit; 100a, first radiation unit; 100b, second radiation unit; 110, radiation arm; 111, hollow 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 feeding member; 152, second feeding member;

[0043] 200, reflecting plate; 201, second fixing hole;

[0044] 310, first branch; 311, first probe; 312, first output end; 320, second branch; 321, second probe; 322, second output end; 301, first stratum; 302, second stratum; 302a, fifth connection hole; 303, third connection hole; 330, fastener;

[0045] 400, first insulating member; 401, second connecting hole; 402, avoidance hole;

[0046] 500, second insulating member; 501, fourth connecting hole;

[0047] 610, first phase shift cavity; 620, second phase shift cavity;

[0048] 700, coupling ring;

[0049] 10. High frequency radiation unit; 20. Low frequency radiation unit. DETAILED DESCRIPTION

[0050] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0051] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0052] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0054] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

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

[0056] Please refer to Figure 1 An embodiment of the present application provides a base station antenna, which includes a radiation unit 100 and a reflection plate 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, and the second polarization direction is orthogonal to the first polarization direction.

[0058] like Figure 1 As shown, the two radiating arms 110 arranged along the first polarization direction are the first radiating arm 110a and the third radiating arm 110c. The two radiating arms 110 arranged along the second polarization direction are the second radiating arm 110b and the 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 radiation unit 100 further includes four support members 120 and four ground members 130, and the radiation arms 110, the support members 120 and the ground members 130 are arranged one by one. The first radiation arm 110a corresponds to the first support member 120a and the first ground member 130a. The second radiation arm 110b corresponds to the second support member 120b and the second ground member 130b. The third radiation arm 110c corresponds to the third support member 120c and the third ground member 130c. The fourth radiation arm 110d corresponds to the fourth support member 120d and the fourth ground member 130d. Figure 2 The corresponding radiation arm 110, support member 120 and ground member 130 are an integrated structure, so that the radiation arm 110 and the ground member 130 are electrically connected through the support member 120. The four radiation arms 110 correspond to four integrated structures. The integrated structure is, for example, an integrated sheet metal structure.

[0060] One end of the support member 120 is connected to the corresponding radiation arm 110, and the support member 120 is bent relative to the radiation arm 110 in a direction close 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 radiation 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 arranged at one end of the corresponding support member 120 close to the reflector 200, and the radiation arm 110 is arranged at one end of the corresponding support member 120 away from the reflector 200.

[0061] Specifically, during processing, the corresponding radiation arm 110, the support member 120 and the grounding member 130 can be integrally formed into a structure in which the three are in the same plane, and then the support member 120 is bent relative to the radiation arm 110, and the grounding member 130 is bent relative to the support member 120, so as to form Figure 2 The structure shown.

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

[0063] The grounding member 130 abuts against the reflector 200 to achieve grounding of the grounding member 130. Specifically, the reflector 200 is made of metal, and the grounding member 130 abuts against the reflector 200, so that the grounding member 130 and the reflector 200 can be electrically connected, thereby achieving grounding of the grounding member 130.

[0064] A single grounding member 130 may directly or indirectly abut against the reflector 200. Each grounding member 130 is grounded by directly or indirectly abutting against the reflector 200.

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

[0066] The radiation unit 100 further includes a fixing member, and at least one grounding member 130 is connected to the reflector 200 through the fixing member, so that the integrated radiation arm 110, the support member 120 and the grounding member 130 are 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 member 130 may be connected to the reflecting plate 200 through a fixing member, or two, three or four grounding members 130 may be connected to the reflecting plate 200 through their corresponding fixing members.

[0068] In the above-mentioned base station antenna, one end of the support member 120 is connected to the corresponding radiation arm 110, and the support member 120 is bent relative to the radiation arm 110 in a direction close to the reflector 200, so that the end of the support member 120 away from the radiation arm 110 is 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 radiation arm 110, and the grounding member 130 is bent relative to the support member 120, so that the position of the grounding member 130 can be close to the reflector 200 and can be arranged opposite to the reflector 200, thereby facilitating the abutment of the grounding member 130 with the reflector 200, so as to achieve grounding of the grounding member 130, and facilitating the connection of the grounding member 130 with the reflector 200. Since the corresponding radiation arm 110, the support member 120 and the grounding member 130 are an integrated structure, the grounding of the grounding member 130 is achieved, that is, the radiation unit 100 is grounded. Moreover, at least one grounding member 130 is connected to the reflector 200 through a fixing member, so that the integrated structure is fixed to the reflector 200, and the grounding member 130 can stably abut against the reflector 200, that is, the radiation unit 100 is reliably grounded. It can be seen that the grounding of the radiation unit 100 of the above-mentioned base station antenna is achieved by abutting the grounding member 130 against the reflector 200, without welding, thereby eliminating electroplating, and thus (compared with the prior art) more in line with the development trend of green environmental protection.

[0069] Please refer to Figure 1 In one embodiment, a first fixing hole 131 is provided on the grounding member 130 connected to the reflecting plate 200 through a fixing member, and a second fixing hole 201 is provided on the reflecting plate 200. The radiation unit 100 includes a fixing member, and the fixing member is correspondingly arranged to the first fixing hole 131 and the second fixing hole 201. The fixing member (not shown) is inserted into the corresponding first fixing hole 131 and the second fixing hole 201 to connect the grounding member 130 to the reflecting plate 200.

[0070] Optionally, the fixing member may be a bolt, and the second fixing hole 201 may be a threaded hole. The screw of the fixing member is threadedly matched with the second fixing hole 201 , and the bolt head of the fixing member 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 members 130 of the radiation unit 100 are respectively in contact with the reflection plate 200, thereby achieving grounding of the four grounding members 130. The grounding member 130 is in contact with the reflection plate 200, so that the grounding member 130 does not need to be in contact with the reflection plate 200 through other intermediate conductive members.

[0072] Please refer to Figure 3 In one embodiment, the base station antenna further includes: a first phase shift cavity 610, a second phase shift cavity 620, a first phase shift circuit and a second phase shift circuit, wherein the first phase shift cavity 610 and the second phase shift cavity 620 are respectively connected to the side of the reflector 200 facing away from the radiation unit 100. The first phase shift circuit is disposed in the first phase shift cavity 610, and the second phase shift circuit is disposed in the second phase shift cavity 620. 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. One end of the first feeder 151 is coupled or directly connected to the two radiation arms 110 arranged along the first polarization direction, and the other end is connected to the first phase shift circuit, so that the two radiation arms arranged along the first polarization direction can be fed. One end of the second feeding element 152 is coupled or directly connected to two radiating arms arranged along the second polarization direction, and the other end is connected to the second phase shifting circuit, so as to be able 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 the radiation units 100 is at least two. Figure 6 and Figure 7 The radiation unit 100 includes a first feeding element 151 for feeding two radiation arms 110 arranged along a first polarization direction and a second feeding element 152 for feeding two radiation arms 110 arranged along a second polarization direction.

[0074] The base station antenna includes a power division circuit, which includes a first branch 310 and a second branch 320. The first branch 310 has two first output ends 312, and the second branch 320 has two second output ends 322. The two first output ends 312 are respectively connected to the first feeders 151 of two adjacent radiation units 100. The two second output ends 322 are respectively connected to the two second feeders 152 of two adjacent radiation units 100.

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

[0076] The two adjacent radiation units 100 are defined as a first radiation unit 100a and a second radiation unit 100b. A first output end 312 of the first branch 310 is connected to an end of the first feeder 151 of the first radiation unit 100a away from the radiation arm 110, and another first output end 312 of the first branch 310 is connected to an end of the first feeder 151 of the second radiation unit 100b away from the radiation arm 110, so that the two first output ends 312 of the first branch 310 can output signals to the first feeders 151 of the two adjacent radiation units 100, respectively.

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

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

[0079] Combination Figure 4 and Figure 5 The base station antenna includes a power division circuit, the power division circuit includes a first branch 310 and a second branch 320, the first branch 310 has a first input end, and the second branch 320 has a second input end. The first input end is connected to the first phase shift circuit. The second input end is connected to the second phase shift circuit. Thus, the first phase shift circuit can transmit a signal to the first branch 310 through the first input end, and the second phase shift circuit can input a signal to the second branch 320 through the second input end.

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

[0081] In the base station antenna in the related technology, the electric field excited by the power division circuit itself is superimposed on the electromagnetic wave radiated by the radiation unit itself, causing deformation and distortion of the radiation pattern. To improve this problem, please refer to Figure 4 In some embodiments of the present application, the power division circuit is parallel to and spaced apart from the reflector 200, so that the reflector 200 can form a first stratum 301 of the power division circuit. Two adjacent radiation units 100 are defined as a first radiation unit 100a and a second radiation unit 100b. Two grounding members 130 of the first radiation unit 100a are connected one-to-one with two grounding members 130 of the second radiation unit 100b to form a second stratum 302. The power division circuit is located between the first stratum 301 and the second stratum 302 to form a stripline transmission line. The second stratum 302 is spaced apart from the power division circuit. The projection of the second stratum 302 on the reflector 200 covers the projection of the power division circuit on the reflector 200.

[0082] In this embodiment, the reflector 200 forms a first stratum 301 of the power divider circuit. The power divider circuit is located between the first stratum 301 and the second stratum 302. The projection of the second stratum 302 on the reflector 200 covers the projection of the power divider circuit on the reflector 200, that is, the second stratum 302 can cover the power divider circuit on the side of the power divider circuit facing away from the reflector 200. In this way, the first stratum 301 and the second stratum 302 can form a shielding structure on both sides of the power divider circuit, thereby greatly reducing the influence of the power divider circuit on the directional pattern, thereby improving the deformation and distortion problems of the directional pattern.

[0083] Furthermore, since the second stratum 302 is spaced apart from the power division circuit, the second stratum 302 is also spaced apart from the reflector 200. In order to enable the grounding member 130 in the second stratum 302 to be electrically connected to the reflector 200 to achieve grounding, each grounding member 130 in the second stratum 302 is provided with a conductive member (not shown), and the conductive member contacts and abuts the reflector 200, so that the grounding member 130 can be electrically connected to the reflector 200 through the conductive member, and then the grounding of the grounding member 130 can be achieved. The grounding member 130 and the conductive member can be an integrally formed structure, or a structure that is connected after being formed separately. One end of the conductive member is connected to the grounding member 130, and the other end abuts the reflector 200. In the embodiment, the grounding member 130 in the second stratum 302 is indirectly abutted against the reflector 200 by means of the conductive member.

[0084] It can be understood that the second ground layer 302 includes two grounding elements 130 of the first radiation unit 100a and two grounding elements 130 of the second radiation unit 100b.

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

[0086] It should be noted that the four grounding members 130 in the second layer 302 may be any one of the grounding members 130 of the first radiation unit 100a connected to any one of the grounding members 130 of the second radiation unit 100b, and any other one of the grounding members 130 of the first radiation unit 100a connected to any other one of the grounding members 130 of the second radiation unit 100b. The four grounding members 130 in the second layer 302 are not limited to the third grounding member 130c and the fourth grounding member 130d of the first radiation unit 100a and the third grounding member 130c and the fourth grounding member 130d of the second radiation unit 100b.

[0087] In one embodiment, the width of the grounding member 130 in the second ground layer 302 is 4 to 5 times the width of the strip line of the power division circuit, so that the second ground layer 302 can reliably cover the power division circuit, thereby ensuring that the second ground layer 302 can fully shield the power division circuit.

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

[0089] It can be understood that, since a power division circuit is arranged between the second layer 302 and the reflecting plate 200, and the other two grounding members 130 of the first radiation unit 100a (except the two grounding members 130 in the second layer 302) are in contact with the reflecting plate 200, the height of the other two grounding members 130 is lower than the grounding member 130 in the second layer 302 (the surface of one side of the reflecting plate 200 close to the power division circuit is taken as the height reference zero position).

[0090] The other two grounding members 130 of the second radiation unit 100b (except the two grounding members 130 in the second ground layer 302) are respectively in contact with the reflection plate 200, and the other two grounding members 130 are respectively connected to the reflection plate 200 through corresponding fixing members 140, so that the second radiation unit 100b can be fixed to the reflection plate 200 as a whole.

[0091] It can be understood that, since a power division circuit is arranged between the second layer 302 and the reflecting plate 200, and the other two grounding members 130 of the second radiation unit 100b (except the two grounding members 130 in the second layer 302) are in contact with the reflecting plate 200, the other two grounding members 130 are lower than the grounding member 130 in the second layer 302 (with the surface of one side of the reflecting plate 200 close to the power division circuit as the height reference zero position).

[0092] exist Figures 4 to 5 In the illustrated embodiment, the other two grounding elements 130 of the first radiation unit 100a (except 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 radiation unit 100b (except 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 layer 302, the grounding member 130 of the first radiation unit 100a and the grounding member 130 of the corresponding second radiation unit 100b are an integrated structure (i.e., integrally formed). In this way, it is unnecessary to connect by other connecting members or by welding, which is more environmentally friendly and convenient to process.

[0094] In the second layer 302, the grounding member 130 of the first radiation unit 100a and the grounding member 130 of the correspondingly connected second radiation unit 100b have the same bending direction relative to the supporting member 120 to which they are connected, so that the grounding member 130 of the first radiation unit 100a and the grounding member 130 of the correspondingly connected second radiation unit 100b can be first processed into an integrally formed planar structure and then bent in the same direction, thereby facilitating bending.

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

[0096] like Figure 4 As shown, the bending direction of the third grounding member 130c of the first radiation 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 radiation unit 100b relative to the corresponding support member 120 (third support member). Therefore, the third grounding member 130c of the first radiation unit 100a and the third grounding member 130c of the second radiation unit 100b can be formed into an integrally formed planar structure, and then the two third grounding members 130c are bent in the same direction to obtain Figure 4 The two third grounding members 130c in the second ground layer 302 are shown, so as to facilitate bending.

[0097] The bending direction of the fourth grounding piece 130d of the first radiation unit 100a relative to the corresponding support piece 120 (fourth support piece) is the same as the bending direction of the fourth grounding piece 130d of the second radiation unit 100b relative to the corresponding support piece 120 (fourth support piece). Therefore, the fourth grounding piece 130d of the first radiation unit 100a and the fourth grounding piece 130d of the second radiation unit 100b can be formed into an integrally formed planar structure, and then the two fourth grounding pieces 130d are bent in the same direction to obtain Figure 4 The two fourth grounding members 130d in the second ground layer 302 are shown, so as to 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 division circuit so that the reflector 200 and the power division circuit are spaced apart. The second insulating member 500 is disposed between the second stratum 302 and the power division circuit so that the second stratum 302 and the power division circuit are spaced apart.

[0099] Specifically, one side of the first insulating member 400 may be in contact with the reflector 200, and the other side may be in contact with the power dividing circuit, so as to support the power dividing circuit and maintain the interval between the reflector 200 and the power dividing circuit. One side of the second insulating member 500 may be in contact with the power dividing circuit, and the other side may be in contact with the second stratum 302, so as to support the second stratum 302 and maintain the interval between the second stratum 302 and the power dividing circuit.

[0100] In one embodiment, the first insulating member 400 and the second insulating member 500 are respectively provided with an escape space for escaping the grounding member 130 contacting the reflection plate 200 .

[0101] The second insulating member 500 may be made of plastic. The second insulating member 500 may be a strip-shaped polygonal structure. The area enclosed by the second insulating member 500 is the avoidance space, which can avoid the grounding members 130 in contact with the reflector 200. Figures 4 to 5 In the illustrated embodiment, the first grounding member 130a and the second grounding member 130b of the second radiation unit 100b are located within the range enclosed by the second insulating member 500, so that the two grounding members 130 can be easily contacted with the reflection plate 200 without being blocked by the second insulating member 500. The first grounding member 130a and the second grounding member 130b of the first radiation unit 100a are located outside the range enclosed by the second insulating member 500, so that they can be easily contacted with the reflection plate 200 without being blocked by the second insulating member 500.

[0102] The first insulating member 400 may be made of plastic. The first insulating member 400 may be in a plate shape. The first insulating member 400 may have an escape hole 402 to avoid the grounding member 130 from contacting 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 radiation unit 100b are located within the range surrounded by the outer contour of the first insulating member 400. Therefore, the first insulating member 400 is provided with an escape hole 402 for evading the two grounding members, so that the two grounding members 130 are conveniently in contact with the reflection plate 200 without being blocked by the first insulating member 400. The first insulating member 400 is provided with two escape holes 402, one of which is used to evade the grounding member 130 of the first radiation unit 100a, and the other is used to evade the grounding member 130 of the second radiation unit 100b.

[0104] Of course, the structures of the first insulating member 400 and the second insulating member 500 may be changed so that each grounding member 130 in contact with the reflector 200 is located outside the contour range of the first insulating member 400 and the second insulating member 500, and there is no need to provide an avoidance 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 division 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 layer 302 is provided with a fifth connection hole 302a.

[0106] The base station antenna includes a fastener 330 . The fastener 330 is inserted into the first connection hole, the second connection hole 401 , the third connection hole 303 , the fourth connection hole 501 , and the fifth connection hole 302 a to fix the reflector 200 , the first insulating member 400 , the power dividing circuit, the second insulating member 500 , and the second ground layer 302 .

[0107] In some embodiments, the fastener 330 may be a hot melt, which can be melted after heating and solidified after cooling. When fixing, the fastener 330 is firstly inserted into the first connection hole, the second connection hole 401, the third connection hole 303, the fourth connection hole 501, and the fifth connection hole 302a, and then the two ends of the fastener 330 are heated and melted. After the end of the fastener 330 is heated and melted, the melted part accumulates and gathers to form a stopper (not shown), and the stopper solidifies after cooling. The stopper is roughly spherical in structure and protrudes radially along the fastener 330. The stopper at one end of the fastener 330 extending out of the fifth connection hole 302a is located on the side of the second stratum 302 facing away from the reflector 200, and cannot pass through the fifth connection hole 302a, so as to limit the end of the fastener 330 extending out of the fifth connection hole 302a. The stopper of the end of the fastener 330 extending out of the first connection hole is located on the side of the reflector 200 facing away from the second ground layer 302 and cannot pass through the first connection hole, thereby limiting the end of the fastener 330 extending out of the first connection hole. In this way, both ends of the fastener 330 are respectively limited, thereby fixing the reflector 200, the first insulating member 400, the power dividing circuit, the second insulating member 500 and the second ground layer 302. The material used for the fastener 330 is, for example, plastic.

[0108] In other embodiments, the fastener 330 may also be other forms of structures, such as a bolt, and the first connection hole may be a threaded hole. The screw of the fastener 330 is threadedly matched with the first connection hole, and the bolt head of the fastener 330 abuts against the second ground layer 302, thereby fixing the reflector 200, the first insulating member 400, the power dividing circuit, the second insulating member 500 and the second ground layer 302.

[0109] Combination Figure 5 , Figure 6 and Figure 7 In some embodiments, the first branch 310 and the first feeders 151 of two adjacent radiation units 100 are integrated strip lines. The second branch 320 and the second feeders 152 of two adjacent radiation units 100 are integrated strip lines. The integrated strip line is, for example, a sheet metal strip line.

[0110] The first branch 310 and the first feeding elements 151 of the first radiating element 100a and the first feeding elements 151 of the second radiating element 100b are integrally formed strip lines, thus eliminating the need to connect the first branch 310 to the two first feeding elements 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 elements 152 of the first radiating element 100a and the second feeding elements 152 of the second radiating element 100b are integrally formed strip lines, thus eliminating the need to connect the second branch 320 to the two second feeding elements 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 to the first phase shifter circuit and convenient to connect the second branch 320 to the second phase shifter circuit.

[0113] Please refer to Figure 1 , in some embodiments, the radiating arms 110 are provided with hollowed-out areas 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 Fig. 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 Fig.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 (that is, 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 radiating arm 110 can be connected by other connectors. By providing the coupling ring 700, an isolation structure can be formed outside the high-frequency radiating unit 10, thereby isolating the radiation energy of the low-frequency radiating unit 20 as much as possible and reducing the influence between the high-frequency and low-frequency radiating units.

[0116] Optionally, the circumference of the outer contour of the coupling loop 700 is 0.9 to 1.1 times the wavelength of the central frequency of the working frequency band of the low-frequency radiation unit 20. In this way, the isolation effect is better, and the influence of the low-frequency radiation unit 20 on the high-frequency radiation unit 10 can be ignored.

[0117] The coupling ring 700 can be in the shape of a rectangular ring, a circular ring, a polygonal ring, etc.

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

[0119] An embodiment of the present application further provides a base station, comprising the base station antenna according to any one of the above embodiments, and further comprising an antenna cover, wherein the antenna cover is connected to the reflector and covers the radiation unit.

[0120] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0121] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A base station antenna, characterized in that: The base station antenna comprises a radiation unit (100) and a reflection plate (200); the radiation unit (100) comprises two radiation arms (110) arranged along a first polarization direction and two radiation arms (110) arranged along a second polarization direction, wherein the second polarization direction is orthogonal to the first polarization direction; The radiation unit (100) comprises four support members (120) and four ground members (130); the radiation arm (110), the support member (120) and the ground member (130) are arranged in a one-to-one correspondence; and the corresponding radiation arm (110), the support member (120) and the ground member (130) are an integrated structure; One end of the support member (120) is connected to the corresponding radiation arm (110), and the support member (120) is bent relative to the radiation arm (110) in a direction close to the reflection plate (200); one end of the grounding member (130) is connected to an end of the corresponding support member (120) away from the radiation arm (110); the grounding member (130) is bent relative to the support member (120) so that the grounding member (130) is opposite to the reflection plate; The grounding member (130) is in abutment with the reflecting plate (200); the radiation unit (100) further comprises a fixing member, and at least one of the grounding members (130) is connected to the reflecting plate (200) via the corresponding fixing member.

2. The base station antenna according to claim 1, characterized in that: The grounding member (130) connected to the reflecting plate (200) via the fixing member is provided with a first fixing hole (131), and the reflecting plate (200) is provided with a second fixing hole (201); The fixing member is inserted into the corresponding first fixing hole (131) and the second fixing hole (201) so that the grounding member (130) is connected to the reflecting plate (200).

3. The base station antenna according to claim 1, characterized in that: The four grounding members (130) in the radiation unit (100) are respectively in contact with the reflection plate (200).

4. The base station antenna according to claim 1, characterized in that: The number of the radiation units (100) is at least two; the radiation unit (100) comprises a first feeding element (151) for feeding two radiation arms (110) arranged along the first polarization direction, and a second feeding element (152) for feeding two radiation arms (110) arranged along the second polarization direction; The base station antenna comprises a power division circuit, the power division circuit comprises a first branch (310) and a second branch (320), the first branch (310) having two first output ends (312), the second branch (320) having two second output ends (322); the two first output ends (312) are respectively connected to the first feeders (151) of two adjacent radiation units (100); the two second output ends (322) are respectively connected to the two second feeders (152) of two adjacent radiation units (100).

5. The base station antenna according to claim 4, characterized in that: The power division circuit and the reflection plate (200) are arranged in parallel and at intervals, so that the reflection plate (200) forms a first layer (301) of the power division circuit; Two adjacent radiation units (100) are defined as a first radiation unit (100a) and a second radiation unit (100b); two of the grounding components (130) of the first radiation unit (100a) are connected to two of the grounding components (130) of the second radiation unit (100b) in a one-to-one correspondence to form a second ground layer (302); The power division circuit is located between the first stratum (301) and the second stratum (302) to form a stripline transmission line; the second stratum (302) and the power division circuit are spaced apart; and the projection of the second stratum (302) on the reflection plate (200) covers the projection of the power division circuit on the reflection plate (200).

6. The base station antenna according to claim 5, characterized in that: A conductive member is provided on the grounding member (130) in the second ground layer (302), and the conductive member is in contact with the reflection plate (200).

7. The base station antenna according to claim 5, characterized in that: The other two grounding members (130) of the first radiation unit (100a) are in contact with the reflection plate (200) respectively, and are connected to the reflection plate (200) respectively through the corresponding fixing members; The other two grounding members (130) of the second radiation unit (100b) are in contact with the reflection plate (200) respectively, and are connected to the reflection plate (200) respectively through the corresponding fixing members.

8. The base station antenna according to claim 5, characterized in that: In the second ground layer (302), the grounding component (130) of the first radiation unit (100a) and the grounding component (130) of the correspondingly connected second radiation unit (100b) are an integrated structure.

9. The base station antenna according to claim 8, characterized in that: In the second layer (302), the grounding member (130) of the first radiation unit (100a) and the grounding member (130) of the correspondingly connected second radiation unit (100b) have the same bending direction relative to the supporting member (120) to which they are respectively connected.

10. The base station antenna according to claim 5, characterized in that: The base station antenna comprises a first insulating member (400) and a second insulating member (500); the first insulating member (400) is arranged between the reflecting plate (200) and the power dividing circuit so that the reflecting plate (200) and the power dividing circuit are spaced apart; the second insulating member (500) is arranged between the second stratum (302) and the power dividing circuit so that the second stratum (302) and the power dividing circuit are spaced apart.

11. The base station antenna according to claim 10, characterized in that: The first insulating member (400) and the second insulating member (500) are respectively provided with an escape space to avoid the grounding member (130) contacting the reflection plate (200).

12. The base station antenna according to claim 10, characterized in that: The reflection plate (200) is provided with a first connection hole, the first insulating member (400) is provided with a second connection hole (401), the power dividing 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 stratum (302) is provided with a fifth connection hole (302a); The base station antenna includes a fastener (330), and the fastener (330) is inserted into the first connection hole, the second connection hole (401), the third connection hole (303), the fourth connection hole (501), and the fifth connection hole (302a) to fix the reflection plate (200), the first insulating member (400), the power division circuit, the second insulating member (500), and the second ground layer (302).

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

14. The base station antenna according to claim 4, characterized in that: The base station antenna further comprises: a first phase shift cavity (610), a second phase shift cavity (620), a first phase shift circuit and a second phase shift circuit, wherein the first phase shift cavity (610) and the second phase shift cavity (620) are respectively connected to a side of the reflector (200) that is away from the radiation unit (100); the first phase shift circuit is arranged in the first phase shift cavity (610), and the second phase shift circuit is arranged in the second phase shift cavity (620); The first branch (310) has a first input end, and the first input end is provided with a first probe (311); the second branch (320) has a second input end, and the second input end is provided with a second probe (321); one end of the first probe (311) passes through the reflection plate (200) and is connected to the first phase shift circuit; one end of the second probe (321) passes through the reflection plate (200) and is connected to the second phase shift circuit.

15. A base station, characterized in that: The base station antenna comprises any one of claims 1 to 14, and further comprises an antenna cover, wherein the antenna cover is connected to the reflection plate (200) and covers the radiation unit (100).

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