Antenna modules and their manufacturing methods, base station antennas

Abstract

This disclosure provides an antenna module and its fabrication method, as well as a base station antenna. It includes a radiating module, at least one support layer, at least one directing layer, and a shielding module. The at least one support layer and at least one directing layer are alternately stacked on the radiating surface of the radiating module. Among the alternately stacked support and directing layers, the layer closest to the radiating module is the support layer, and the layer farthest from the radiating module is the directing layer. The shielding module is disposed around the sides of the radiating module, the at least one support layer, and the at least one directing layer, and the shielding module is integrally formed with the radiating module, the at least one support layer, and the at least one directing layer. The antenna module provided by this disclosure reduces the design, manufacturing, and assembly complexity while improving the integration of the antenna module.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to an antenna module and its manufacturing method, and a base station antenna. Background Technology

[0002] Satellite-to-ground communication places higher demands on Massive MIMO antennas, requiring more elements, a more compact structure, and lighter weight. To meet these requirements, elements typically employ a multi-layer printed circuit board (PCB) microstrip line structure, using surface-mount metal sheet leads and isolators to improve the bandwidth and isolation of the MIMO antenna. However, current metal sheet leads and isolators are independently designed components. The design and molding of metal sheet leads are complex, and the assembly process is intricate, increasing the cost of MIMO antennas. Furthermore, the weight of metal sheet leads increases the transmission cost of satellite antennas. Summary of the Invention

[0003] This disclosure provides an antenna module and its manufacturing method, as well as a base station antenna.

[0004] In a first aspect, embodiments of this disclosure provide an antenna module, including a radiating module, at least one support layer, at least one guiding layer, and a shielding module. The at least one support layer and the at least one guiding layer are alternately stacked on the radiating surface of the radiating module. Among the alternately stacked at least one support layer and at least one guiding layer, the layer closest to the radiating module is the support layer, and the layer farthest from the radiating module is the guiding layer.

[0005] The shielding module is disposed around the sides of the radiation module, the at least one support layer and the at least one guiding layer, and the shielding module is integrally formed with the radiation module, the at least one support layer and the at least one guiding layer.

[0006] Secondly, embodiments of this disclosure provide a method for manufacturing an antenna module, including:

[0007] At least one support layer and at least one guiding layer are stacked on the radiating surface of the radiating module. The at least one support layer and at least one guiding layer are stacked alternately in sequence. Among the at least one support layer and the at least one guiding layer, the layer closest to the radiating module is the support layer, and the layer farthest from the radiating module is the guiding layer.

[0008] The radiating module, the at least one support layer, and the at least one guiding layer are subjected to hot pressing process to form an integral structure.

[0009] A shielding film layer is formed on the outer surface of the radiating module, the supporting layer and the guiding layer to obtain the antenna module.

[0010] Thirdly, embodiments of this disclosure provide a base station antenna, including at least one antenna module and a large board, wherein the antenna module is surface-mounted on the surface of the large board, and the antenna module includes any of the antenna modules provided in the embodiments of this disclosure.

[0011] The antenna module in this embodiment includes a radiating module, at least one support layer, at least one directing layer, and a shielding module. The at least one support layer and at least one directing layer are alternately stacked on the radiating surface of the radiating module. Among the alternately stacked at least one support layer and at least one directing layer, the layer closest to the radiating module is the support layer, and the layer farthest from the radiating module is the directing layer. The shielding module is arranged around the sides of the radiating module, at least one support layer, and at least one directing layer, which can improve the axial ratio of the antenna. The shielding module, radiating module, at least one support layer, and at least one directing layer are integrally formed. Compared with designing the shielding module and the directing layer independently, the design, manufacturing, and assembly difficulty of the antenna module can be reduced, while improving the integration of the antenna module. Attached Figure Description

[0012] In the accompanying drawings of the embodiments disclosed herein:

[0013] Figure 1 A schematic diagram of the structure of an antenna module provided in an embodiment of this disclosure is shown;

[0014] Figure 2 A schematic diagram of another antenna module provided in an embodiment of this disclosure is shown;

[0015] Figure 3 This diagram shows a flowchart of an antenna module fabrication method provided in an embodiment of the present disclosure;

[0016] Figure 4 This diagram shows a flowchart of another antenna module fabrication method provided in an embodiment of the present disclosure;

[0017] Figure 5 This diagram illustrates the structure of a pressure plate according to an embodiment of the present disclosure.

[0018] Figure 6 An exploded view of an antenna module provided in an embodiment of this disclosure is shown;

[0019] Figure 7 This diagram shows a flowchart of an antenna module fabrication method provided in an embodiment of the present disclosure;

[0020] Figure 8 This diagram illustrates a one-piece molded structure according to an embodiment of the present disclosure;

[0021] Figure 9 This diagram shows an antenna module without a shielding film layer in an embodiment of this disclosure;

[0022] Figure 10 The graphs showing the standing wave ratio and isolation of the antenna module provided in the embodiments of this disclosure are illustrated.

[0023] Figure 11 This diagram illustrates the radiation pattern of the antenna module provided in an embodiment of this disclosure;

[0024] Figure 12 The axial ratio curve of the antenna module provided in the embodiments of this disclosure is shown;

[0025] Figure 13 This diagram illustrates the structure of a base station antenna according to an embodiment of the present disclosure. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions of this disclosure, the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings.

[0027] The present disclosure will be described more fully below with reference to the accompanying drawings; however, the embodiments shown may be embodied in different forms, and the present disclosure should not be construed as limited to the embodiments set forth below. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will enable those skilled in the art to fully understand the scope of the disclosure.

[0028] The accompanying drawings of the embodiments disclosed herein are provided to further illustrate the embodiments of this disclosure and form part of the specification. They are used together with the detailed embodiments to explain this disclosure and do not constitute a limitation thereof. The above and other features and advantages will become more apparent to those skilled in the art from the description of the detailed embodiments with reference to the accompanying drawings.

[0029] Where there is no conflict, the various embodiments of this disclosure and the features thereof in the embodiments may be combined with each other.

[0030] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the disclosure. The term "and / or" as used in this disclosure includes any and all combinations of one or more of the associated enumerated entries. The singular forms "a" and "the" as used in this disclosure are also intended to include the plural forms, unless the context clearly indicates otherwise. The terms "comprising," "made of," etc., as used in this disclosure specify the presence of the stated feature, integral, step, operation, element, and / or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof.

[0031] Unless otherwise specified, all terms used in this disclosure (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this disclosure, and will not be interpreted as having an idealized or overly formal meaning, unless expressly so defined in this disclosure.

[0032] This disclosure is not limited to the embodiments shown in the accompanying drawings, but includes modifications to the configuration based on the manufacturing process. Therefore, the areas illustrated in the drawings are schematic, and the shapes of the areas shown illustrate specific shapes of the areas of an element, but are not intended to be limiting.

[0033] In a first aspect, embodiments of this disclosure provide an antenna module.

[0034] Figure 1 A schematic diagram of the structure of an antenna module provided in an embodiment of this disclosure is shown. Figure 1 As shown, the antenna module of this embodiment includes a radiating module 1, at least one support layer 2, at least one guiding layer 3, and a shielding module 4. The at least one support layer 2 and the at least one guiding layer 3 are alternately stacked on the radiating surface of the radiating module 1. Among the alternately stacked at least one support layer 2 and at least one guiding layer 3, the layer closest to the radiating module 1 is the support layer 2, and the layer farthest from the radiating module 1 is the guiding layer 3. The support layer 2 is used to provide support for the guiding layer 3, so that the guiding layer 3 can be disposed on the radiating surface of the radiating module 1.

[0035] In some embodiments, the support layer 2 is made of a lightweight material to reduce the weight of the antenna module, thereby reducing the total weight of the satellite antenna and thus reducing the transmission cost of the satellite antenna.

[0036] The shielding module 4 is arranged around the sides of the radiating module 1, at least one support layer 2 and at least one guide layer 3. The shielding module 4 helps to improve the axial ratio of the antenna. Moreover, the shielding module 4, the radiating module 1, the at least one support layer 2 and the at least one guide layer 3 are integrally formed. For example, the radiating module 1 and the guide layer 3 are integrally formed through the support layer 2. Therefore, the shielding module 4 and the guide layer 3 do not need to be designed independently. Compared with metal sheet metal, the design and processing difficulty of the shielding module 4 is greatly reduced, and no assembly is required, which reduces the assembly difficulty of the antenna module.

[0037] The antenna module in this embodiment includes a radiating module 1, at least one support layer 2, at least one guiding layer 3, and a shielding module 4. The at least one support layer 2 and at least one guiding layer 3 are alternately stacked on the radiating surface of the radiating module 1. Among the alternately stacked at least one support layer 2 and at least one guiding layer 3, the support layer 2 is closest to the radiating module 1, and the guiding layer 3 is farthest from the radiating module 1. The shielding module 4 is arranged around the sides of the radiating module 1, the at least one support layer 2, and the at least one guiding layer 3. The shielding module 4 is integrally formed with the radiating module 1, the at least one support layer 2, and the at least one guiding layer 3. Compared with designing the shielding module and the guiding layer independently, the design, manufacturing, and assembly difficulty of the antenna module can be reduced, while improving the integration of the antenna module.

[0038] Figure 2 A schematic diagram of another antenna module provided in an embodiment of this disclosure is shown. Figure 2 As shown, the antenna module of this embodiment includes a radiating module 1, two support layers 2, two guiding layers 3, and a shielding module 4. The two support layers 2 and the two guiding layers 3 are alternately stacked on the radiating surface of the radiating module 1. Among the alternately stacked support layers 2 and guiding layers 3, the layer closest to the radiating module 1 is the support layer 2, and the layer farthest from the radiating module 1 is the guiding layer 3. The support layer 2 is used to provide support for the guiding layer 3, so that the guiding layer 3 can be placed on the radiating surface of the radiating module 1.

[0039] In some embodiments, the shielding module 4 is disposed around the sides of the radiating module 1, the two support layers 2 and the two guiding layers 3. The shielding module 4 helps to improve the axial ratio of the antenna. Moreover, the shielding module 4 is integrally formed with the radiating module 1, the two support layers 2 and the two guiding layers 3. Therefore, the shielding module 4 and the guiding layers 3 do not need to be designed independently. Compared with metal sheet metal, the design and processing difficulty of the shielding module 4 is greatly reduced, and no assembly is required, which reduces the assembly complexity of the antenna module.

[0040] In some embodiments, the radiation module 1 may employ a multilayer PCB board for radiating and receiving electromagnetic waves. This disclosure does not limit the specific structure of the radiation module 1.

[0041] In some embodiments, the antenna module further includes a first adhesive layer 51 and a second adhesive layer 52, wherein the first adhesive layer 51 is stacked between the radiating module 1 and the support layer 2 for bonding the radiating module 1 and the support layer 2 together, and the second adhesive layer 52 is stacked between the support layer 2 and the guiding layer 3 for bonding the support layer 2 and the guiding layer 3 together.

[0042] In some embodiments, the first adhesive layer 51 and the second adhesive layer 52 may be made of epoxy thermosetting material, which can not only improve the heat resistance of the first adhesive layer 51 and the second adhesive layer 52, such as the pressing temperature being greater than 180°C; further improve the bonding ability of the first adhesive layer 51 and the second adhesive layer 52, which helps to increase the bonding strength between the radiating module 1 and the support layer 2, and the second adhesive layer 52 helps to increase the bonding strength between the support layer 2 and the guiding layer 3; it also helps to improve the reliability of the antenna module.

[0043] In some embodiments, the loss tangent of the first adhesive layer and the second adhesive layer is less than 0.002, and / or the thickness is less than 0.12 mm, which can reduce the impact of the first adhesive layer and the second adhesive layer on the electrical performance of the antenna.

[0044] In some embodiments, the lightweight material used in the support layer 2 includes foam material or honeycomb material. The foam material includes one or more of modified polyimide MPI foam and polymethacrylimide PMI foam, and the honeycomb material includes one or more of para-aramid honeycomb and glass fiber honeycomb. These lightweight materials are not only lightweight, but also resistant to the effects of space radiation on the antenna module, thereby improving the reliability of the antenna module.

[0045] In some embodiments, the loss tangent Df of the lightweight material is less than 0.004, and / or the density ρ is less than 0.11 g / cm³. 3 This improves the axial ratio performance of the antenna module and reduces the weight of the support layer 2.

[0046] In some embodiments, the support layer 2 can withstand a temperature T ranging from T≥180℃, and can withstand an instantaneous surface temperature of 260℃ or higher, and can withstand a pressure P ranging from P≥0.1MPa.

[0047] In some embodiments, the guiding layer 3 includes a single-sided copper-clad laminate or other components capable of resisting space radiation. The copper layer of the single-sided copper-clad laminate is disposed on the side away from the radiating module. The single-sided copper-clad laminate can improve the antenna module's resistance to space radiation, thereby improving the reliability of the antenna module.

[0048] In some embodiments, the shielding module 4 includes a shielding base ring 41 and a shielding film layer 42, the shielding film layer 42 being disposed on the outer surface of the shielding base ring and the outer surface of the radiation module 1.

[0049] In some embodiments, the shielding base ring 41 may be made of FR4 grade material to reduce the weight of the antenna module. In some embodiments, the shielding film layer includes a copper film layer or a carbon film layer, wherein the copper film layer can be formed by electroplating or coating processes, and the carbon film layer can be formed by coating processes.

[0050] Secondly, embodiments of this disclosure provide a method for manufacturing an antenna module.

[0051] Figure 3 A flowchart illustrating a method for fabricating an antenna module according to an embodiment of this disclosure is shown. Figure 3 As shown, the antenna module fabrication method provided in this embodiment includes:

[0052] Step S301: At least one support layer and at least one guiding layer are stacked on the radiation surface of the radiation module. The at least one support layer and at least one guiding layer are stacked alternately in sequence. Among the at least one support layer and at least one guiding layer, the layer closest to the radiation module is the support layer, and the layer farthest from the radiation module is the guiding layer.

[0053] In this embodiment, the support layer is a lightweight material, which is placed inside the shielding base ring. The lightweight material includes foam material or honeycomb material, and has a loss tangent of less than 0.004 and a density of less than 0.11 g / cm³. 3 The foam materials include one or more of modified polyimide (MPI) foam and polymethacrylimide (PMI) foam; the cell materials include one or more of para-aramid cell and glass fiber cell.

[0054] In this embodiment of the disclosure, the guiding layer includes, but is not limited to, a single-sided copper-clad laminate.

[0055] Step S302: The radiating module, at least one support layer and at least one guiding layer are hot-pressed through a hot-pressing process to form an integral structure of the radiating module, support layer and guiding layer.

[0056] During the hot pressing process, the lightweight material is compressed and deformed, and the radiating module and the guiding layer are bonded together by the lightweight material.

[0057] Step S303: A shielding film layer is formed on the outer surface of the radiating module, the support layer and the guiding layer to obtain the antenna module.

[0058] In this embodiment, a copper film layer can be electroplated on the outer surface of the radiating module, the support layer, and the guiding layer using an electroplating process; alternatively, a carbon film layer or a copper film layer can be obtained by coating with carbon paste or copper paste, followed by high-temperature curing to form an antenna module.

[0059] When preparing a shielding film layer through a coating process, the appropriate curing temperature and curing time can be selected according to different materials. For example, when using carbon paste with grade C374, the curing temperature is 130℃ and the curing time is 10 min. When using copper paste with grade PCSG-2301-5, the curing temperature is 150℃ and the curing time is 60 min.

[0060] In some embodiments, in order to improve the fabrication efficiency of the antenna module, a support layer and a guide layer can be stacked using a pressure plate. Figure 4 A flowchart illustrating another antenna module fabrication method provided in this disclosure is shown. Figure 4 As shown, the antenna module fabrication method provided in this embodiment includes:

[0061] Step S401: At least one pressure plate and at least one guiding layer are stacked on the radiating surface of the radiating module. The pressure plate and the guiding layer are stacked alternately in sequence. Among the pressure plate and the guiding layer, the layer closest to the radiating module is the pressure plate, and the layer farthest from the radiating module is the guiding layer. At least one shielding base ring is embedded in the pressure plate, and the shielding base ring penetrates the thickness of the pressure plate.

[0062] Among them, the pressure plate includes, but is not limited to, epoxy glass cloth laminate (FR-4).

[0063] Figure 5 A schematic diagram of a pressure plate provided in an embodiment of this disclosure is shown. Figure 5 As shown, 24 shielding base rings 41 are arranged in an array on the pressure plate 40, and the shielding base rings 41 and the pressure plate 40 are connected by connecting parts 43. One or more connecting parts 43 can be provided between the shielding base rings 41 and the pressure plate 40 to connect the shielding base rings 41 and the pressure plate 40.

[0064] In some embodiments, the shielding base ring 41 is directly machined on the pressure plate 40. For example, a hole 44 penetrating the thickness of the pressure plate 40 is machined on the pressure plate 40, and a groove 45 with the same curvature as the hole 44 is machined around the hole 44. The groove 45 penetrates the thickness of the pressure plate 40, and a connecting portion 43 is formed at the junction of two adjacent grooves 45. In this way, the shielding base ring 41 is connected to the pressure plate 40 only through the connecting portion 43.

[0065] Step S402: Fill the shielding base ring with a support layer.

[0066] The support layer is made of lightweight material, which is placed inside the shielding base ring. The lightweight material includes foam or honeycomb material, and its loss tangent is less than 0.004, with a density less than 0.11 g / cm³. 3 The foam materials include one or more of modified polyimide (MPI) foam and polymethacrylimide (PMI) foam; the cell materials include one or more of para-aramid cell and glass fiber cell.

[0067] In some embodiments, when the antenna module includes multiple pressure plates and multiple guide layers, after stacking one pressure plate, a support layer is filled in the shielding base ring of the pressure plate, and then the guide layer is stacked. That is, for each pressure plate stacked, a support layer is first filled in the shielding base ring of the pressure plate, and then the guide layer is stacked.

[0068] In this embodiment of the disclosure, the guide layer is a single-sided copper-clad laminate, which is stacked on the surface of the pressure plate.

[0069] Step S403: The radiating module, at least one pressure plate, support layer and at least one guiding layer are hot-pressed through a hot-pressing process to form an integral structure of the radiating module, support layer, shielding base ring and guiding layer.

[0070] During the hot pressing process, lightweight materials are compressed and deformed. The shielding base ring can limit the lightweight materials and prevent them from being squeezed into other areas.

[0071] Step S404: Separate the shielding base ring from the pressure plate.

[0072] The connection is cut off, thereby separating the shielding base ring from the pressure plate, thus obtaining an antenna module without a shielding film layer.

[0073] Step S405: A shielding film layer is formed on the outer surface of the shielding base ring and the outer surface of the radiation module to obtain an antenna module. The shielding base ring and the shielding film layer constitute a shielding module.

[0074] In this embodiment, a copper film layer can be electroplated on the outer surface of the shielding base ring and the outer surface of the radiation module using an electroplating process; alternatively, a carbon film layer or a copper film layer can be obtained by coating with carbon paste or copper paste, followed by high-temperature curing to form the antenna module.

[0075] When preparing a shielding film layer through a coating process, the appropriate curing temperature and curing time can be selected according to different materials. For example, when using carbon paste with grade C374, the curing temperature is 130℃ and the curing time is 10 min. When using copper paste with grade PCSG-2301-5, the curing temperature is 150℃ and the curing time is 60 min.

[0076] The antenna module fabrication method provided in this disclosure involves stacking at least one pressure plate and at least one guiding layer on the radiating surface of the radiating module. The pressure plate and guiding layer are stacked alternately, with the pressure plate being the bottom layer and the guiding layer the top layer. At least one shielding base ring is embedded within the pressure plate, penetrating the thickness of the pressure plate. A support layer is placed inside the shielding base ring. The radiating module, support layer, shielding base ring, and guiding layer are then integrally formed using a hot-pressing process. After separating the shielding base ring from the pressure plate, a layer is placed outside the shielding base ring. A shielding film layer is formed on the outer surface of the surface and the radiating module to obtain the antenna module. Since the support layer uses lightweight materials, the weight of the antenna module can be reduced, which helps to reduce the overall weight of the satellite antenna and thus reduce the transmission cost of the satellite antenna. The shielding module is arranged around the sides of the radiating module, the support layer and the guide layer, which can improve the axial ratio of the antenna. The shielding module, the radiating module, the support layer and the guide layer are integrally formed. Compared with the independent design of the shielding module and the guide layer, the design, manufacturing and assembly difficulty of the antenna module can be reduced, while improving the integration of the antenna module.

[0077] In some embodiments, a first adhesive layer is stacked between the radiating module and the pressure plate, and a second adhesive layer is stacked between the pressure plate and the guiding layer. The first and second adhesive layers are made of epoxy thermosetting material, and the loss tangent of both layers is less than 0.002, and their thickness is less than 0.12 mm.

[0078] Figure 6 This diagram shows an exploded view of an antenna module provided in an embodiment of the present disclosure. Figure 7 A flowchart illustrating a method for fabricating an antenna module according to an embodiment of this disclosure is shown. (In conjunction with...) Figure 6 and Figure 7 The methods for fabricating antenna modules include:

[0079] Step S601: A first adhesive layer 51 is stacked on the radiating surface of the radiating module 1.

[0080] In step S602, a pressure plate 40 is stacked on the upper surface of the first adhesive layer 51, and at least one shielding base ring 41 is provided on the pressure plate 40, the shielding base ring 41 penetrating the thickness of the pressure plate 40.

[0081] Step S603: Fill the shielding base ring 41 with the support layer 2.

[0082] Step S604: A second adhesive layer 52 is stacked on the upper surface of the pressure plate 40.

[0083] In step S605, a guide layer 3 is stacked on the upper surface of the second adhesive layer 52.

[0084] Step S606: The stacked radiation module 1, first adhesive layer 51, lightweight material second adhesive layer 52 and guiding layer 3 are hot-pressed to form an integral structure.

[0085] During the hot pressing process, some of the molten material from the first adhesive layer 51 and the second adhesive layer 52 flows into the gap between the support layer 2 and the shielding base ring 41, and after cooling, the support layer 2 and the shielding base ring 41 are bonded together.

[0086] During the hot pressing process, after the first adhesive layer 51 and the second adhesive layer 52 melt, they will also be evenly distributed between the radiation module 1 and the support layer 2, and between the support layer 2 and the guide layer 3.

[0087] During the hot pressing process, the shielding base ring can limit the lightweight material and prevent it from being squeezed into other areas.

[0088] Figure 8 A schematic diagram of an integrally molded structure according to an embodiment of this disclosure is shown. For example... Figure 8 As shown, the radiation module 1, the first adhesive layer 51, the support layer 2, the second adhesive layer 52, and the guiding layer 3 are tightly bonded together to form an integral structure.

[0089] Step S607: Separate the shielding base ring 41 from the pressure plate 7.

[0090] The connection part is cut off, thereby separating the shielding base ring from the pressure plate, resulting in an antenna module without a shielding film layer, such as... Figure 9 As shown.

[0091] Step S608: A shielding film layer is formed on the outer surface of the shielding base ring and the outer surface of the radiation module to obtain an antenna module. The shielding base ring and the shielding film layer constitute a shielding module.

[0092] Figure 10 The graph shows the standing wave ratio (SWR) and isolation of the antenna module provided in this embodiment of the present disclosure. The horizontal axis represents frequency (GHz), and the vertical axis represents SWR and isolation (dB). Figure 10 As shown, the maximum value of the standing wave S11 is -12.5 dB, and the maximum value of the isolation S12 is -14.8 dB.

[0093] Figure 11 The diagram illustrates the radiation pattern of an antenna module provided in an embodiment of this disclosure, with the horizontal axis representing angle (deg) and the vertical axis representing gain (dB). Figure 11 As shown, the main polarization gain differs from the cross-polarization gain by 14 dB.

[0094] Figure 12The diagram shows the axial ratio curve of the antenna module provided in this embodiment, with the horizontal axis representing angle (deg) and the vertical axis representing axial ratio (dB). Figure 12 As shown, the maximum axial ratio of the 0° and 90° profiles is less than 3.6 dB, with a bandwidth of ±50° from 1.92 GHz to 2.2 GHz.

[0095] Thirdly, embodiments of this disclosure provide a base station antenna.

[0096] Figure 13 This diagram illustrates the structure of a base station antenna according to an embodiment of the present disclosure. Figure 13 As shown, the base station antenna includes at least one antenna module 10 and a large board 20. The at least one antenna module 10 is attached to the surface of the large board 20. The antenna module 10 adopts the antenna module provided in the embodiments of this disclosure, which will not be described in detail here.

[0097] The base station antenna provided in this embodiment can be either a satellite antenna or a terrestrial antenna.

[0098] The base station antenna in this embodiment includes at least one antenna module and a large board. The antenna module adopts the antenna module provided in this embodiment. Since the support layer uses a lightweight material, the total weight of the satellite antenna can be reduced, thereby reducing the transmission cost of the satellite antenna. The shielding module is arranged around the sides of the radiating module, at least one support layer and at least one guiding layer, which can improve the axial ratio of the base station antenna. The shielding module, radiating module, at least one support layer and at least one guiding layer are integrally formed. Compared with designing the shielding module and guiding layer independently, the design, manufacturing and assembly difficulty of the base station antenna can be reduced, while improving the integration of the base station antenna.

[0099] This disclosure has disclosed exemplary embodiments, and although specific terminology has been used, it is for general illustrative purposes only and should not be construed as limiting. In some instances, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in conjunction with particular embodiments may be used alone, or in combination with features, characteristics, and / or elements described in conjunction with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of this disclosure as set forth by the appended claims.

Claims

1. An antenna module, characterized in that, The device includes a radiation module, at least one support layer, at least one guiding layer, and a shielding module. The at least one support layer and the at least one guiding layer are alternately stacked on the radiation surface of the radiation module. Among the alternately stacked at least one support layer and at least one guiding layer, the layer closest to the radiation module is the support layer, and the layer farthest from the radiation module is the guiding layer. The support layer is made of a lightweight material. The shielding module is disposed around the sides of the radiation module, the at least one support layer and the at least one guiding layer, and the shielding module is integrally formed with the radiation module, the at least one support layer and the at least one guiding layer; The shielding module includes a shielding base ring and a shielding film layer. The shielding base ring surrounds the side of the at least one support layer and the at least one guiding layer. The shielding film layer is disposed on the outer surface of the shielding base ring and the outer surface of the radiation module. A first adhesive layer is stacked between the radiation module and the support layer, and the radiation module and the support layer are bonded together by hot pressing; A second adhesive layer is stacked between the support layer and the guide layer, and the support layer and the guide layer are bonded together by hot pressing; The shielding base ring is used to limit the position of the support layer.

2. The antenna module according to claim 1, characterized in that, The first adhesive layer and the second adhesive layer include at least one of the following characteristics: Epoxy thermosetting materials are used; The loss tangent is less than 0.002; Thickness less than 0.12mm.

3. The antenna module according to claim 1, characterized in that, The support layer is made of a lightweight material, which includes at least one of the following characteristics: The lightweight material is a foam material or a honeycomb material; The loss tangent of the lightweight material is less than 0.004; The density of the lightweight material is less than 0.11 g / cm3.

4. The antenna module according to claim 3, characterized in that, The foam material includes one or more of modified polyimide MPI foam and polymethacrylimide PMI foam; The honeycomb material includes one or more of para-aramid honeycomb and glass fiber honeycomb.

5. The antenna module according to claim 1, characterized in that, The shielding film layer includes a copper film layer or a carbon film layer.

6. A method for manufacturing an antenna module, characterized in that, include: At least one support layer and at least one guiding layer, a first adhesive layer and a second adhesive layer are stacked on the radiating surface of the radiating module. The at least one support layer and at least one guiding layer are stacked alternately in sequence. Among the at least one support layer and at least one guiding layer, the layer closest to the radiating module is the support layer and the layer farthest from the radiating module is the guiding layer. A first adhesive layer is stacked between the radiating module and the support layer, and a second adhesive layer is stacked between the support layer and the guiding layer. The support layer is made of a lightweight material. The radiating module, the at least one support layer, the at least one guiding layer, the first adhesive layer and the second adhesive layer are subjected to hot pressing process to form an integral structure of the radiating module, the support layer and the guiding layer; A shielding module is formed on the outer surfaces of the radiating module, the supporting layer, and the guiding layer to obtain the antenna module; The shielding module includes a shielding base ring and a shielding film layer. The shielding base ring surrounds the side of the at least one support layer and the at least one guiding layer. The shielding film layer is disposed on the outer surface of the shielding base ring and the outer surface of the radiation module. The shielding base ring is used to limit the position of the support layer.

7. The antenna module manufacturing method according to claim 6, characterized in that, The method of forming a shielding module on the outer surface of the radiation module, the support layer, and the guiding layer includes: The shielding film layer is formed using an electroplating process; Alternatively, the shielding film layer can be formed using a coating process.

8. A base station antenna, characterized in that, It includes at least one antenna module and a large board, wherein the antenna module is surface-mounted on the surface of the large board, and the antenna module includes the antenna module according to any one of claims 1 to 5.

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