Antenna assembly, antenna and base station

Abstract

The invention provides an antenna assembly, an antenna and a base station, the antenna assembly comprises a reflection plate, a phase shifter and at least one radiation unit, the radiation unit and the phase shifter are respectively arranged on the front and back surfaces of the reflection plate, the phase shifter comprises a cavity and a phase shift circuit arranged in the cavity, and the phase shift circuit is arranged in the cavity. The radiation unit comprises a radiation part, a feed core and a first balun structure, the first balun structure penetrates through the reflecting plate to be connected with the radiation part and the cavity, and the feed core is arranged in the first balun structure to be electrically connected with the radiation part and the phase shift circuit. The first balun structure penetrates through the reflecting plate to be connected with a cavity of the phase shifter to realize grounding, the feed core is arranged in the balun, the feed core is directly and electrically connected with the phase shifter and the radiation unit, so that the phase shifter and the radiation unit do not need to be connected through a coaxial cable, and the reflecting plate, the phase shifter and the radiation unit are arranged in a split manner, so that the radiation unit is not required to be connected through a coaxial cable. And production and manufacturing are facilitated.

Description

Technical Field

[0001] The present invention belongs to the technical field of mobile communications, and in particular relates to an antenna assembly, an antenna equipped with the antenna assembly, and a base station equipped with the antenna. Background Art

[0002] In existing, widely used base station antennas, the structure generally consists of three parts: a phase shifter, a reflector, and a radiating element. The phase shifter and radiating element require electroplating, and signal transmission between the phase shifter and radiating element relies on coaxial cables. This traditional solution has the following technical drawbacks: the phase shifter and radiating element are connected by multiple coaxial cables, resulting in a lengthy and cluttered feeder system, which not only increases assembly difficulty but also takes up additional space. The electroplating process and complex assembly process increase manufacturing costs, while the overall antenna weight is relatively high, making it difficult to meet lightweight design requirements. In response to the development trend of multi-band, multi-port antennas, the traditional structure requires the integration of more components, further increasing space occupation and process complexity.

[0003] To address these issues, recent designs have seen the emergence of integrated processing of the phase shifter cavity and reflector, or even designs where the phase shifter, reflector cavity, and radiator are all molded into one piece. These solutions significantly simplify the assembly process and reduce cable usage by reducing the number of separate components. However, as base station antennas evolve toward multi-band and multi-port designs, antenna size has increased significantly, exposing new challenges to these integrated designs:

[0004] (1) Molding process limitations: The integrated molding of large-size antennas requires the use of complex molds and large equipment, resulting in a sharp increase in mold development costs, material loss, and equipment investment;

[0005] (2) Insufficient greenness: Although the amount of cable used is reduced, the material waste rate generated by large-size molding increases, and the high energy consumption processing process is contrary to the development trend of green antennas;

[0006] (3) Limited scalability: The integrated structure is difficult to adapt to the future dynamic expansion requirements of multiple frequency bands and multiple standards, and the mold needs to be redesigned, which violates the design principle of flexible evolution of communication equipment. Summary of the Invention

[0007] The primary objective of the present invention is to solve at least one of the above problems and to provide an antenna assembly, an antenna, and a base station.

[0008] In order to meet the various objectives of the present invention, the present invention adopts the following technical solutions:

[0009] An antenna assembly is provided to meet one of the purposes of the present invention, including a reflector, a phase shifter and at least one radiating unit, wherein the radiating unit and the phase shifter are respectively arranged on the front and back sides of the reflector, the phase shifter includes a cavity and a phase shifting circuit installed in the cavity, the radiating unit includes a radiating component, a feed core and a first balun structure, the first balun structure passes through the reflector to be respectively connected to the radiating component and the cavity, and the feed core is installed in the first balun structure to be respectively electrically connected to the radiating component and the phase shifting circuit.

[0010] In one embodiment, the first balun structure includes a first base and a first balun column arranged on the first base, the first base is fixed on the cavity, the first balun column is provided with a mounting channel, the feed core is installed in the mounting channel, the cavity is provided with a feeding hole, the feed core passes through the feeding hole to be electrically connected to the phase shift circuit.

[0011] In one embodiment, two inner cavities are provided in the cavity, and each inner cavity is respectively equipped with a phase-shifting circuit. The first balun structure includes two first balun columns arranged in parallel, and each first balun column is equipped with a feeding core. The two feeding cores extend into the two inner cavities respectively to be electrically connected to the corresponding phase-shifting circuits.

[0012] In a further embodiment, the radiation component includes two pairs of radiation arms arranged with orthogonal polarizations, and each feed core is electrically connected to a corresponding pair of radiation arms.

[0013] In one embodiment, a first fixing hole is provided on the first base, a second fixing hole is provided on the cavity, and the first fixing hole and the second fixing hole are fixedly connected by a first fixing member.

[0014] In one embodiment, the radiation unit also includes a second balun structure, which is arranged on the front of the reflector plate. The second balun structure includes a second base and a second balun column arranged on the second base. The second balun column is connected to the radiation component. The first balun structure also includes a fixed base, and the second base is fixed to the fixed base.

[0015] In one embodiment, a mounting hole is provided on the reflective plate, and the fixing seat is installed in the mounting hole, or the fixing seat is protruded relative to the mounting hole toward the radiation component.

[0016] In one embodiment, a third fixing hole is formed on the fixing seat, a fourth fixing hole is formed on the second base, and the third fixing hole and the fourth fixing hole are fixedly connected via a second fixing member.

[0017] In one embodiment, the second balun structure includes two second balun columns, and the two second balun columns respectively support radiation arms of the radiation component with different polarizations.

[0018] In one embodiment, a fifth fixing hole is formed on the second base, a sixth fixing hole is formed on the reflective plate, and the fifth fixing hole and the sixth fixing hole are connected via a third fixing member.

[0019] In one embodiment, the first balun structure and the second balun structure are both integrally formed structures.

[0020] In one embodiment, the antenna assembly includes a plurality of radiating elements, which are arranged along the same axis to form a radiating column.

[0021] An antenna is provided to meet one of the purposes of the present invention, including multiple antenna components as described in the previous purpose, wherein the multiple antenna components are arranged side by side, the multiple antenna components share the same reflector, and multiple radiation columns are combined to form a radiation array.

[0022] To meet one of the objectives of the present invention, a base station is provided, comprising the antenna as described above.

[0023] Compared with the prior art, the present invention has many advantages, including but not limited to:

[0024] (1) In traditional antenna assemblies, the phase shifter and the radiating unit are usually connected by a coaxial cable. The coaxial cable requires a certain length to achieve signal transmission, which will lead to a complex internal space layout of the antenna assembly and occupy a large installation space. Moreover, the connection of the coaxial cable requires additional fixing and mounting structures, which increases the difficulty and cost of assembly. In the present invention, the first balun structure of the radiating unit passes through the reflector to connect with the cavity of the phase shifter, and the feed core is installed in the balun and directly electrically connects the phase shifter and the radiating unit, eliminating the use of traditional coaxial cables, making the internal structure of the antenna assembly simpler and reducing space occupancy. At the same time, since there is no need to install and fix the coaxial cable, the assembly process is also simpler, reducing the difficulty and cost of assembly.

[0025] (2) In traditional antenna assemblies, the cavity of the phase shifter usually needs to be electroplated to improve its electrical conductivity and corrosion resistance. The electroplating process consumes a large amount of materials and energy, and will cause certain environmental pollution, increasing production costs. In the present invention, since the phase shifter and the radiating unit are directly electrically connected through the feed core and do not need to be connected through a coaxial cable, the cavity of the phase shifter does not need to be electroplated. This can not only reduce the cost of electroplating and reduce the consumption of materials and energy, but also avoid the pollution caused by the electroplating process to the environment, which is in line with the development concept of green environmental protection.

[0026] (3) Coaxial cables will have certain losses during signal transmission, especially when the cable length is long, the loss will be more obvious. This will affect the overall performance of the antenna assembly and reduce the signal transmission quality and efficiency. In the present invention, the feed core is directly installed in the balun and electrically connected to the phase shifter and the radiating unit, which shortens the signal transmission path and reduces the signal loss during transmission. This can improve the electrical performance of the antenna assembly, enhance the signal transmission quality and efficiency, and enable the antenna assembly to better meet communication needs.

[0027] (4) The antenna assembly of the present invention has three separate components: the radiation unit, the reflector, and the phase shifter. This significantly reduces production difficulty and reduces production costs. Furthermore, the antenna assembly offers greater flexibility and scalability, reducing technology upgrade costs and extending product lifecycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0029] Figure 1 Schematic diagram of the structure of an antenna assembly according to a typical embodiment of the present invention.

[0030] Figure 2 Schematic diagram of an exploded view of an antenna assembly according to a typical embodiment of the present invention.

[0031] Figure 3 This is a schematic structural diagram of the balun and feed core of the radiating unit of the antenna assembly according to a typical embodiment of the present invention.

[0032] Figure 4 Schematic diagram of the structure of an antenna assembly according to an embodiment of the present invention.

[0033] Figure 5 FIG. 1 is a schematic structural diagram of an antenna according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and are not to be construed as limiting the present invention.

[0035] It will be understood by those skilled in the art that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the description of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. In addition, "connected" or "coupled" as used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0036] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0037] The present invention provides an antenna assembly, in which a radiating unit and a phase shifter are respectively arranged on the front and back sides of a reflector plate. The balun of the radiating unit penetrates the reflector plate to extend to the cavity of the phase shifter, and the feed core installed in the balun is electrically connected to the radiating component of the radiating unit and the phase shifting circuit in the cavity of the phase shifter, respectively. This eliminates the need for the radiating unit and the phase shifter to be connected via a coaxial cable, and also eliminates the need for the cavity of the phase shifter and the reflector plate to be arranged as one, thereby reducing the production cost of the antenna assembly.

[0038] In an exemplary embodiment of the present invention, Figure 1 The antenna assembly 10 includes a reflector 100, a phase shifter 200 and at least one radiation unit 300, wherein the radiation unit 300 is arranged on the front surface 110 of the reflector 100, and the phase shifter 200 is arranged on the back surface of the reflector 100.

[0039] Combine Figure 1 and Figure 2The phase shifter 200 includes a cavity 210 and a phase shift circuit 220, wherein the phase shift circuit 220 is installed in the cavity 210. The radiation unit 300 includes a radiation component 310, a feed core 320, and a balun 330. The balun 330 is connected to the radiation component 310 to support the radiation component 310. The feed core 320 is installed in the balun 330. The feed core 320 is electrically connected to the phase shift circuit 220. The phase shift circuit 220 feeds power to the radiation component 310 through the feed core 320 to excite the radiation component 310, so that the radiation component 310 radiates signals to the outside.

[0040] Specifically, the balun 330 includes a first balun structure 340, the first balun structure 340 passes through the reflector 100, the two ends of the first balun structure 340 are respectively connected to the radiation component 310 and the cavity 210, the feed core 320 is installed in the first balun structure 340, and the two ends of the feed core 320 are respectively electrically connected to the radiation component 310 and the phase shift circuit 220.

[0041] The first balun structure 340 includes a balun column (referred to as a first balun column 341). The reflector 100 has a through hole (referred to as a mounting hole 130). The first balun column 341 passes through the mounting hole 130, thereby facilitating connection between the first balun column 341 and the radiating element 310 and the cavity 210. Furthermore, because the first balun column 341 is connected to the cavity 210, the radiating element 300 can be grounded through the cavity 210.

[0042] Combine Figure 3 The first balun column 341 defines a mounting channel 3411 extending axially through the first balun column 341. The feed core 320 is mounted in the mounting channel 3411, with the feed core 320 having an input end 321 and an output end 322. The cavity 210 defines a through hole corresponding to the feed core 320 (referred to as a feed hole 211).

[0043] Combine Figure 2The input end 321 of the feed core 320 passes through the feed hole 211 to electrically connect to the phase shift circuit 220 installed in the cavity 210. The output end 322 of the feed core 320 is electrically connected to the radiating element 310, so that the two ends of the feed core 320 are electrically connected to the phase shift circuit 220 and the radiating element 310, respectively. It can be understood that the phase shifter 200 feeds the radiating element 300 through the feed core 320, eliminating the need for a coaxial cable between the phase shifter 200 and the radiating element 300, thereby improving the feeding efficiency between the phase shifter 200 and the radiating element 300. Furthermore, because the antenna assembly 10 does not require a coaxial cable, the cavity 210 also does not require electroplating, thereby reducing electroplating costs, reducing environmental pollution, and promoting green production.

[0044] Combine Figure 3 and Figure 2 The first balun structure 340 further includes a base (referred to as a first base 342), and the first balun column 341 is disposed on the first base 342. The first base 342 is disposed on the cavity 210 and is fixedly connected to the cavity 210, so that the first balun structure 340 can be stably disposed on the cavity 210 to maintain the structural stability of the antenna assembly 10.

[0045] In one embodiment, a first fixing hole 3421 is defined in the first base 342, and a second fixing hole 212 is defined in the cavity 210. The first fixing hole 3421 and the second fixing hole 212 are fixedly connected by a first fixing member 410, thereby fixing the first balun structure 340 and the cavity 210, and in other words, fixing the radiating element 300 and the phase shifter 200. In this embodiment, it is recommended that both the first fixing hole 3421 and the second fixing hole 212 are screw holes, and the first fixing member 410 is a screw or bolt, but this should not be construed as limiting the present invention. The first fixing hole 3421 and the second fixing hole 212 are threadedly connected by the first fixing member 410, and the first fixing member 410 is made of a dielectric material, such as a plastic material, to prevent the first fixing member 410 from affecting the electrical performance and intermodulation index of the antenna assembly 10.

[0046] In an exemplary embodiment of the present invention, Figure 1 and Figure 2The radiating component 310 includes multiple radiating portions 311, each of which includes one or more radiating arms 312. The multiple radiating portions 311 operate at different polarizations. The cavity 210 of the phase shifter 200 includes multiple inner cavities 213, each of which is equipped with a phase shifting circuit 220. In other words, the multiple phase shifting circuits 220 are respectively installed in the multiple inner cavities 213. The radiating unit 300 includes multiple feed cores 320, each of which is connected to the radiating portion 311 and the corresponding phase shifting circuit 220. In other words, the multiple phase shifting circuits 220 are electrically connected to the radiating portion 311 corresponding to each of the multiple phase shifting circuits 220 through the multiple feed cores 320.

[0047] The first balun structure 340 is configured with a first balun column 341 for each feed core 320 , that is, the first balun structure 340 is provided with a plurality of first balun columns 341 to facilitate the installation of the plurality of feed cores 320 . The plurality of first balun columns 341 are arranged in parallel on the first base 342 .

[0048] In this embodiment, the present invention is described by taking the radiation component 310 including two radiation parts 311, each radiation part 311 including a pair of radiation arms 312 as an example, but it should not be understood as limiting the present invention. The two radiation parts 311 are arranged in a polarization-orthogonal form, that is, the two pairs of radiation arms 312 are polarization-orthogonal arranged, so that the radiation unit 300 constitutes a dual-polarization radiation unit 300.

[0049] A partition plate 214 is provided in the cavity 210 to separate two inner cavities 213 in the cavity 210. Two phase shifting circuits 220 are respectively provided in the two inner cavities 213, and two feeding cores 320 are configured corresponding to the two phase shifting circuits 220 and the two radiating parts 311. The first balun structure 340 is configured with two first balun columns 341 corresponding to the two feeding cores 320. The two first balun columns 341 are arranged in parallel on the first base 342.

[0050] Each of the two first balun columns 341 is equipped with a feeding core 320, and the phase shift circuit 220 and the radiation part 311 corresponding to the phase shift circuit 220 are electrically connected through a feeding core 320, that is, the two phase shift circuits 220 and the two radiation parts 311 are electrically connected respectively through the two feeding cores 320, so that the two phase shift circuits 220 each feed the corresponding radiation part 311.

[0051] In one embodiment, combined Figure 2 and Figure 3The cavity 210 is formed by a plurality of cavity plates 215, one of which (referred to as the top plate 216) is opposite to and adjacent to the reverse side of the reflector 100, and the first base 342 of the first balun structure 340 is located on the top plate 216, and the first base 342 is fixedly connected to the top plate 216.

[0052] In one embodiment, the feed hole 211 is provided on the top plate 216, so that after the feed core 320 extends out of the mounting channel 3411 of the first balun column 341, the feed core 320 extends through the feed hole 211 into the corresponding inner cavity 213 of the cavity 210, and is electrically connected to the corresponding phase shift circuit 220. In this embodiment, two feed holes 211 are provided on the top plate 216, and the two feed holes 211 are respectively provided corresponding to the two inner cavities 213, so that the two feed cores 320 each extend into the corresponding inner cavity 213 through the corresponding feed hole 211.

[0053] In a further embodiment, in combination Figure 2 Among the multiple cavity plates 215, two cavity plates 215 disposed on either side of the width direction of the top plate 216 are side plates 217. The partition plate 214 is disposed side by side with the two side plates 217. The two inner cavities 213 are disposed on either side of the partition plate 214. It is understood that the two side walls of the inner cavity 213 are formed by the partition plate 214 and one of the side plates 217. The feed hole 211 is disposed at the intersection of the side plate 217 and the top plate 216. It is understood that the feed hole 211 passes through both the side plate 217 and the top plate 216 to connect the corresponding inner cavity 213.

[0054] In an exemplary embodiment of the present invention, Figures 1 to 3 The balun 330 further includes a second balun structure 350 , which is disposed on the front surface 110 of the reflector 100 , and the second balun structure 350 is connected to the radiation component 310 to support the radiation component 310 .

[0055] Specifically, the second balun structure 350 includes a second balun column 351 and a base (the base is referred to as the second base 352 ). One end of the second balun column 351 is disposed on the second base 352 , and the other end of the second balun column 351 is connected to the radiation component 310 .

[0056] Because the radiating component 310 includes two pairs of radiating arms 312 with orthogonal polarizations, the second balun structure 350 is correspondingly provided with two second balun posts 351. These two second balun posts 351 respectively support radiating arms 312 with different polarizations. Specifically, within a pair of radiating arms 312 with the same polarization, one radiating arm 312 is supported by the first balun post 341, and the other radiating arm 312 is supported by the second balun post 351. Thus, the two pairs of radiating arms 312 are supported by the two first balun posts 341 and the two second balun posts 351.

[0057] The first balun structure 340 includes a fixing seat 343. The first balun column 341 of the first balun structure 340 extends through the fixing seat 343. The fixing seat 343 is installed in the mounting hole 130 of the reflector 100. Alternatively, the fixing seat 343 is protruded from the reflector 100 toward the radiating component 310, or is disposed on the front surface 110 of the reflector 100. In one embodiment, the shape and size of the mounting hole 130 correspond to those of the fixing seat 343, so that the mounting hole 130 can limit the fixing seat 343 and improve the installation stability of the first balun structure 340.

[0058] The second base 352 of the second balun structure 350 is connected to the fixing base 343 of the first balun structure 340, and the second base 352 and the fixing base 343 are fixed to maintain the structural stability of the balun 330, and the radiation component 310 can be grounded in sequence through the second balun structure 350, the first balun structure 340 and the cavity 210.

[0059] In one embodiment, a third fixing hole 3431 is defined in the fixing base 343, and a fourth fixing hole 3521 is defined in the second base 352. The third fixing hole 3431 and the fourth fixing hole 3521 are aligned with each other, and a second fixing member 420 is used to securely connect the third fixing hole 3431 and the fourth fixing hole 3521, thereby securing the first balun structure 340 and the second balun structure 350. In this embodiment, it is recommended that both the third fixing hole 3431 and the fourth fixing hole 3521 are screw holes, and the second fixing member 420 is a screw or bolt. However, this should not be construed as limiting the present invention. The second fixing member 420 is used to secure the first balun structure 340 and the second balun structure 350 by threading the third fixing hole 3431 and the fourth fixing hole 3521 together. Furthermore, the second fixing member 420 is made of a dielectric material, such as plastic, to prevent the second fixing member 420 from affecting the electrical performance and intermodulation performance of the antenna assembly 10.

[0060] In an exemplary embodiment of the present invention, the second base 352 is also disposed on the front surface 110 of the reflector 100. When the second base 352 is disposed on the reflector 100, the radiation component 310 is also electrically connected to the reflector 100 via the second base 352 to achieve grounding.

[0061] In a further embodiment, a fifth fixing hole 3522 is defined on the second base 352, and a sixth fixing hole 140 is defined on the reflector 100. The fifth fixing hole 3522 is aligned with the sixth fixing hole 140, and a third fixing member 430 is used to securely connect the fifth fixing hole 3522 and the sixth fixing hole 140, thereby securing the second balun structure 350 to the reflector 100. In this embodiment, it is recommended that both the fifth fixing hole 3522 and the sixth fixing hole 140 are screw holes, and the third fixing member 430 is a screw or bolt, but this should not be construed as limiting the present invention. The third fixing member 430 is used to securely connect the fifth fixing hole 3522 and the sixth fixing hole 140, thereby securing the second balun structure 350 to the reflector 100. Furthermore, the third fixing member 430 is made of a dielectric material, such as plastic, to prevent it from affecting the electrical performance and intermodulation performance of the antenna assembly 10.

[0062] In one embodiment, the second base 352 is insulated from the front surface 110 of the reflector 100 , so that the second base 352 does not need to be connected to the reflector 100 , thereby simplifying the installation process of the second balun structure 350 .

[0063] In one embodiment, the first balun column 341 of the first balun structure 340 is welded to the radiation component 310, and the second balun column 351 of the second balun structure 350 is welded to the radiation component 310, so that the balun 330 and the radiation component 310 are welded and fixed, thereby improving the structural stability of the radiation unit 300.

[0064] In another embodiment, a plurality of plug-in holes are provided on the radiation component 310, and the first balun column 341 and the second balun column 351 are correspondingly inserted into different plug-in holes, so that the radiation component 310 can be stably set on the first balun structure 340 and the second balun structure 350, thereby improving the structural stability of the radiation unit 300.

[0065] In one embodiment, the radiation component 310 is a plate-shaped structure.

[0066] In one embodiment, the first balun structure 340 is an integrally formed structure, and the first balun structure 340 is electroplated; the second balun structure 350 is an integrally formed structure, and the second balun structure 350 is electroplated; so that the antenna assembly 10 only needs to electroplate the first balun structure 340 and the second balun structure 350, reducing the parts of the antenna assembly 10 that need to be electroplated and reducing processing costs.

[0067] In an exemplary embodiment of the present invention, Figure 4 The present invention is described using an antenna assembly 10 having multiple radiating elements 300 as an example, but this should not be construed as limiting the present invention. The multiple radiating elements 300 share the same phase shifter 200 and are sequentially arranged along the axial direction of the cavity 210 of the phase shifter 200, forming a radiating array.

[0068] In one embodiment, the radiating element 300 is a dual-polarized radiating element, and multiple phase-shifting circuits 220 are provided in each of the two inner cavities 213. Specifically, a dielectric plate 230 is provided in the inner cavity 213, and multiple phase-shifting circuits 220 are provided on the dielectric plate 230. The multiple phase-shifting circuits 220 are arranged sequentially along the axial direction of the dielectric plate 230. The multiple phase-shifting circuits 220 in the same inner cavity are arranged corresponding to the multiple radiating elements 300. In other words, each radiating element 300 is electrically connected to a corresponding phase-shifting circuit 220 in the same inner cavity, and the radiating element 300 is arranged directly above the corresponding phase-shifting circuit 220. The specific connection method between the radiating element 300 and the corresponding phase-shifting circuit 220 in the two inner cavities 213 is described above and will not be further described here to save space.

[0069] In another embodiment, the radiating element 300 is a dual-polarized radiating element, and a phase shifting circuit 220 is provided in each of the two inner cavities 213. Specifically, a phase shifting circuit 220 is provided on a dielectric plate 230 within the inner cavity 213. The phase shifting circuit 220 in the inner cavity 213 has multiple output ports, each of which is electrically connected to the multiple radiating elements 300, so that the multiple radiating elements 300 are simultaneously electrically connected to the same phase shifting circuit 220. For details on how the radiating elements 300 are connected to the corresponding phase shifting circuits 220 in the two inner cavities 213, please refer to the above description and will not be further described here to save space.

[0070] The present invention also provides an antenna 600, combined with Figure 5The antenna 600 includes multiple antenna assemblies 10 described above, which are arranged side by side along the same axis. Because the multiple radiating elements 300 on the antenna assembly 10 form a radiating column, the respective radiating columns of the multiple antenna assemblies 10 are arranged side by side along the same axis to form a radiating array.

[0071] In one embodiment, the multiple antenna assemblies 10 share the same reflector 100 to reduce the production cost of the antenna 600 .

[0072] The present invention further provides a base station, which includes the antenna 600 described above.

[0073] To summarize, the balun of the radiating unit of the antenna assembly of the present invention passes through the reflector to be connected to the cavity of the phase shifter to achieve grounding, and the feed core is installed in the balun. The feed core directly electrically connects the phase shifter and the radiating unit, so that the phase shifter and the radiating unit do not need to be connected through a coaxial cable, so that the cavity of the phase shifter does not need to be electroplated, thereby reducing the electroplating cost.

[0074] The above description is merely an illustration of the preferred embodiments of the present invention and the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this invention is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the above-mentioned inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions invented in this invention.

[0075] Although the subject matter has been described in language specific to structural features and / or methodological logical acts, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely example forms of implementing the claims.

Claims

1. An antenna assembly, characterized in that: The invention comprises a reflector, a phase shifter and at least one radiating unit, wherein the radiating unit and the phase shifter are respectively arranged on the front and back sides of the reflector, the phase shifter comprises a cavity and a phase shifting circuit installed in the cavity, the radiating unit comprises a radiating component, a feeding core and a first balun structure, the first balun structure passes through the reflector to be respectively connected to the radiating component and the cavity, and the feeding core is installed in the first balun structure to be respectively electrically connected to the radiating component and the phase shifting circuit.

2. The antenna assembly according to claim 1, wherein: The first balun structure includes a first base and a first balun column arranged on the first base. The first base is fixed on the cavity. The first balun column is provided with an installation channel. The feed core is installed in the installation channel. The cavity is provided with a feeding hole. The feed core passes through the feeding hole to be electrically connected to the phase shift circuit.

3. The antenna assembly according to claim 2, wherein: Two inner cavities are provided in the cavity, and each inner cavity is respectively equipped with a phase-shifting circuit. The first balun structure includes two first balun columns arranged in parallel, and each first balun column is equipped with a feeding core. The two feeding cores extend into the two inner cavities respectively to be electrically connected to the corresponding phase-shifting circuits.

4. The antenna assembly according to claim 3, wherein: The radiation component includes two pairs of radiation arms arranged with orthogonal polarizations, and each feed core is electrically connected to a corresponding pair of radiation arms.

5. The antenna assembly according to claim 2, wherein: A first fixing hole is provided on the first base, a second fixing hole is provided on the cavity, and the first fixing hole and the second fixing hole are fixedly connected by a first fixing member.

6. The antenna assembly according to claim 2, wherein: The radiation unit also includes a second balun structure, which is arranged on the front of the reflector. The second balun structure includes a second base and a second balun column arranged on the second base. The second balun column is connected to the radiation component. The first balun structure also includes a fixed base, and the second base is fixed to the fixed base.

7. The antenna assembly according to claim 6, wherein: The reflective plate is provided with a mounting hole, and the fixing seat is installed in the mounting hole, or the fixing seat is protruded relative to the mounting hole toward the radiation component.

8. The antenna assembly according to claim 6, wherein: A third fixing hole is formed on the fixing seat, a fourth fixing hole is formed on the second base, and the third fixing hole and the fourth fixing hole are fixedly connected via a second fixing member.

9. The antenna assembly according to claim 6, wherein: The second balun structure includes two second balun columns, and the two second balun columns respectively support radiation arms of the radiation component with different polarizations.

10. The antenna assembly according to claim 6, wherein: A fifth fixing hole is defined on the second base, a sixth fixing hole is defined on the reflective plate, and the fifth fixing hole and the sixth fixing hole are connected via a third fixing member.

11. The antenna assembly according to claim 6, wherein: The first balun structure and the second balun structure are both integrally formed structures.

12. The antenna assembly according to any one of claims 1 to 11, wherein: The antenna assembly includes a plurality of radiation units, which are arranged along the same axis to form a radiation column.

13. An antenna, characterized in that: It comprises a plurality of antenna assemblies as claimed in claim 12, wherein the plurality of antenna assemblies are arranged side by side, and a plurality of radiating columns are combined to form a radiating array.

14. A base station, characterized in that: Comprising the antenna as claimed in claim 13.

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