Antenna module and preparation method thereof, and base station antenna

Abstract

The invention provides an antenna module, a preparation method thereof and a base station antenna. Comprising a radiation module, at least one supporting layer, at least one guiding layer and a shielding module, the at least one supporting layer and the at least one guiding layer are sequentially and alternately stacked on a radiation surface of the radiation module, in the at least one supporting layer and the at least one guiding layer which are sequentially and alternately stacked, the layer closest to the radiation module is the supporting layer, and the layer closest to the shielding module is the shielding module. The layer farthest from the radiation module is a guide layer; the shielding module is arranged on the side faces of the radiation module, the at least one supporting layer and the at least one guiding layer in a surrounding mode, and the shielding module, the radiation module, the at least one supporting layer and the at least one guiding layer are of an integrally-formed structure. According to the antenna module provided by the invention, the design, process and assembly difficulty is reduced, and the integration level of the antenna module is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, in particular to an antenna module, a preparation method thereof and a base station antenna. BACKGROUND

[0002] Satellite-ground communication puts higher requirements on massive multiple-input multiple-output (Massive MIMO) antennas, such as more dipoles, more compact structure and lighter weight. In order to meet the requirements of satellite-ground communication, the dipoles usually adopt a microstrip line structure of a multi-layer printed circuit board (PCB), and a surface-mounted metal sheet is used as a director and a spacer block to improve the bandwidth and isolation of the MIMO antenna. However, the current metal sheet director and spacer block are both independently designed components, the design and forming of the metal sheet director are difficult, the assembly process is complex, and the cost of the MIMO antenna is increased. Moreover, the metal sheet director is heavy, which increases the launch cost of the satellite antenna. SUMMARY

[0003] The present disclosure provides an antenna module, a preparation method thereof and a base station antenna.

[0004] In a first aspect, the present disclosure provides an antenna module, comprising a radiation module, at least one support layer, at least one director layer and a shielding module, the at least one support layer and the at least one director layer are alternately stacked in sequence on the radiation surface of the radiation module, and among the at least one support layer and the at least one director layer stacked in sequence, the layer closest to the radiation module is the support layer, and the layer farthest from the radiation module is the director layer.

[0005] The shielding module is arranged around the side surface of the radiation module, the at least one support layer and the at least one director layer, and the shielding module and the radiation module, the at least one support layer and the at least one director layer are an integrally formed structure.

[0006] In a second aspect, the present disclosure provides a preparation method of an antenna module, comprising:

[0007] Stacking at least one support layer and at least one director layer on the radiation surface of the radiation module, the at least one support layer and the at least one director layer are alternately stacked in sequence, and among the at least one support layer and the at least one director layer, the layer closest to the radiation module is the support layer, and the layer farthest from the radiation module is the director layer.

[0008] Performing hot pressing treatment on the radiation module, the at least one support layer and the at least one director layer by a hot pressing process, so that the radiation module, the support layer and the director layer form an integrally formed structure.

[0009] A shielding film layer is formed on the outer surfaces of the radiation module, the support layer and the guiding layer, and the antenna module is obtained.

[0010] In a third aspect, the embodiments of the present disclosure provide a base station antenna, comprising at least one antenna module and a large plate, wherein the antenna module is attached to the surface of the large plate, and the antenna module comprises any one of the antenna modules provided by the embodiments of the present disclosure.

[0011] The antenna module in the embodiments of the present disclosure comprises 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 in sequence, and among the at least one support layer and the at least one guiding layer stacked in sequence, the layer closest to the radiation module is the support layer, and the layer farthest from the radiation module is the guiding layer. The shielding module is arranged around the side surface of the radiation module, the at least one support layer and the at least one guiding layer, which can improve the axial ratio of the antenna. The shielding module and the radiation module, the at least one support layer and the at least one guiding layer are integrally formed, which can reduce the design, process and assembly difficulty of the antenna module, and improve the integration of the antenna module. BRIEF DESCRIPTION OF DRAWINGS

[0012] In the drawings of the embodiments of the present disclosure:

[0013] Figure 1 A structural schematic diagram of an antenna module provided by the embodiments of the present disclosure is shown;

[0014] Figure 2 A structural schematic diagram of another antenna module provided by the embodiments of the present disclosure is shown;

[0015] Figure 3 A flowchart of a preparation method of an antenna module provided by the embodiments of the present disclosure is shown;

[0016] Figure 4 A flowchart of another preparation method of an antenna module provided by the embodiments of the present disclosure is shown;

[0017] Figure 5 A structural schematic diagram of a pressing plate provided by the embodiments of the present disclosure is shown;

[0018] Figure 6 An exploded view of an antenna module provided by the embodiments of the present disclosure is shown;

[0019] Figure 7 A flowchart of a preparation method of an antenna module provided by the embodiments of the present disclosure is shown;

[0020] Figure 8 A schematic diagram of an integrally formed structure in the embodiments of the present disclosure is shown;

[0021] Figure 9 A schematic diagram of an antenna module without a shielding film layer is shown in the embodiments of the present disclosure.

[0022] Figure 10 A curve diagram of standing wave and isolation of an antenna module is shown in the embodiments of the present disclosure.

[0023] Figure 11 A directional diagram of an antenna module is shown in the embodiments of the present disclosure.

[0024] Figure 12 A curve diagram of axial ratio of an antenna module is shown in the embodiments of the present disclosure.

[0025] Figure 13 A structural schematic diagram of a base station antenna is shown in the embodiments of the present disclosure. DETAILED DESCRIPTION

[0026] To make the skilled in the art better understand the technical solutions of the present disclosure, the embodiments of the present disclosure are described in detail below with reference to the drawings.

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

[0028] The accompanying drawings, which are included to provide a further understanding of the present disclosure and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the detailed description help to explain the present disclosure. The above and other features and advantages of the present disclosure will become more apparent from the following detailed description, taken in conjunction with the accompanying drawings, in which:

[0029] In the case of no conflict, each embodiment of the present disclosure and each feature in the embodiments can be combined with each other.

[0030] The terms used in the present disclosure are only used to describe specific embodiments and should not be construed to limit the present disclosure. As used in the present disclosure, the term "and / or" includes any and all combinations of one or more of the associated listed items. As used in the present disclosure, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. As used in the present disclosure, the terms "comprises", "comprising", "consists of", "consisting of", "consists essentially of", "consisting essentially of", specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

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

[0032] The present disclosure is not limited to the embodiments shown in the drawings, but includes modifications of the configuration formed based on the manufacturing process. Therefore, the regions exemplified in the drawings have a schematic property, and the shape of the regions shown in the drawings exemplifies a specific shape of the region of the element, but is not intended to be restrictive.

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

[0034] Figure 1 A structural schematic diagram of an antenna module provided by the embodiments of the present disclosure is shown. As shown in the figure, Figure 1 The antenna module of the embodiments of the present disclosure includes a radiation module 1, at least one support layer 2, at least one directing layer 3, and a shielding module 4. The at least one support layer 2 and the at least one directing layer 3 are alternately stacked in sequence on the radiation surface of the radiation module 1. Among the alternately stacked at least one support layer 2 and the at least one directing layer 3, the layer closest to the radiation module 1 is the support layer 2, and the layer farthest from the radiation module 1 is the directing layer 3. The support layer 2 is used to provide support for the directing layer 3, so that the directing layer 3 can be arranged on the radiation surface of the radiation module 1.

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

[0036] The shielding module 4 is arranged around the side surface of the radiation module 1, the at least one support layer 2, and the at least one directing layer 3. The shielding module 4 helps to improve the axial ratio of the antenna. Moreover, the shielding module 4 is in an integrated structure with the radiation module 1, the at least one support layer 2, and the at least one directing layer 3. For example, the radiation module 1 and the directing layer 3 form an integrated structure through the support layer 2. Therefore, the shielding module 4 and the directing layer 3 do not need to be designed independently. Compared with a metal sheet, the design and processing difficulty of the shielding module 4 is greatly reduced, and assembly is not required, thereby reducing the assembly difficulty of the antenna module.

[0037] The antenna module in the embodiments of the present disclosure comprises a radiation 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 radiation surface of the radiation module 1. In the alternately stacked at least one support layer 2 and the at least one guiding layer 3, the layer closest to the radiation module 1 is the support layer 2, and the layer farthest from the radiation module 1 is the guiding layer 3. The shielding module 4 is arranged around the side of the radiation 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 radiation module 1, the at least one support layer 2, and the at least one guiding layer 3. Compared with the independent design of the shielding module and the guiding layer, the design, process, and assembly difficulty of the antenna module can be reduced, and the integration of the antenna module can be improved.

[0038] Figure 2 Another structure of an antenna module provided by the embodiments of the present disclosure is shown. As shown in the figure, the antenna module comprises a radiation 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 radiation surface of the radiation module 1. In the alternately stacked two support layers 2 and the two guiding layers 3, the layer closest to the radiation module 1 is the support layer 2, and the layer farthest from the radiation module 1 is the guiding layer 3. The support layer 2 is used to support the guiding layer 3, so that the guiding layer 3 can be arranged on the radiation surface of the radiation module 1. Figure 2

[0039] In some embodiments, the shielding module 4 is arranged around the side of the radiation 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 radiation module 1, the two support layers 2, and the two guiding layers 3. Therefore, the shielding module 4 and the guiding layer 3 do not need to be independently designed. Compared with a metal sheet, the design and processing difficulty of the shielding module 4 is greatly reduced, and assembly is not required, thereby reducing the assembly complexity of the antenna module.

[0040] In some embodiments, the radiation module 1 can adopt a multi-layer PCB board for radiating and receiving electromagnetic waves. The specific structure of the radiation module 1 is not limited in the embodiments of the present disclosure.

[0041] In some embodiments, the antenna module further comprises a first adhesive layer 51 and a second adhesive layer 52. The first adhesive layer 51 is stacked between the radiation module 1 and the support layer 2, and is used to bond the radiation module 1 and the support layer 2 together. The second adhesive layer 52 is stacked between the support layer 2 and the guiding layer 3, and is used to bond 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 can adopt an 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 a pressing temperature greater than 180℃, but also further improve the bonding capacity of the first adhesive layer 51 and the second adhesive layer 52, which helps to increase the bonding strength of the radiation module 1 and the support layer 2, and the second adhesive layer 52 helps to increase the bonding strength of the support layer 2 and the guide layer 3, and also helps to improve the reliability of the antenna module.

[0043] In some embodiments, the first adhesive layer and the second adhesive layer have a loss tangent value less than 0.002, and / or a thickness less than 0.12mm, which can reduce the influence of the first adhesive layer and the second adhesive layer on the electrical indicators of the antenna.

[0044] In some embodiments, the support layer 2 adopts a lightweight material including a foam material or a honeycomb material, wherein the foam material includes one or more of a modified polyimide MPI foam and a polymethacrylimide PMI foam, and the honeycomb material includes one or more of a para-aramid honeycomb and a glass fiber honeycomb. These lightweight materials not only have a light weight, but also can resist the influence of space radiation on the antenna module, thereby improving the reliability of the antenna module.

[0045] In some embodiments, the lightweight material has a loss tangent value Df less than 0.004, and / or a density p less than 0.11g / cm 3 . This can not only improve the axial ratio performance of the antenna module, but also reduce the weight of the support layer 2.

[0046] In some embodiments, the support layer 2 can withstand a temperature T in a range of T≥180℃, and can withstand a surface-mounted instantaneous temperature of 260℃ or higher, and can withstand a pressure P in a range of P≥0.1Mpa.

[0047] In some embodiments, the guide layer 3 includes a single-sided copper-clad plate or other components capable of resisting space radiation, and the copper layer of the single-sided copper-clad plate is arranged away from the radiation module. The single-sided copper-clad plate can improve the ability of the antenna module to resist 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, and the shielding film layer 42 is arranged 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 can adopt an 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 process, and the carbon film layer can be formed by coating process.

[0050] In a second aspect, the present disclosure provides a method for manufacturing an antenna module.

[0051] Figure 3 A flow chart of a method for manufacturing an antenna module is shown. As shown in the flow chart, the method for manufacturing an antenna module comprises the following steps. Figure 3

[0052] In step S301, at least one support layer and at least one guide layer are stacked on a radiation surface of a radiation module, the at least one support layer and the at least one guide layer are alternately stacked in sequence, and among the at least one support layer and the at least one guide layer, the layer closest to the radiation module is the support layer, and the layer farthest from the radiation module is the guide layer.

[0053] In the present disclosure, the support layer is a lightweight material, the lightweight material is placed in a shielding base ring, the lightweight material includes a foam material or a honeycomb material, the tangent loss of the lightweight material is less than 0.004, and the density of the lightweight material is less than 0.11 g / cm 3 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.

[0054] In the present disclosure, the guide layer includes but is not limited to a single-sided copper-clad plate.

[0055] In step S302, a hot-pressing process is performed on the radiation module, the at least one support layer, and the at least one guide layer to form an integrated structure of the radiation module, the support layer, and the guide layer.

[0056] In the hot-pressing process, the lightweight material is deformed by extrusion, and the radiation module and the guide layer are bonded together by the lightweight material.

[0057] In step S303, a shielding film layer is formed on the outer surface of the radiation module, the support layer, and the guide layer to obtain an antenna module.

[0058] In the present disclosure, a copper film layer can be formed on the outer surface of the radiation module, the support layer, and the guide layer by electroplating; or a carbon film layer or a copper film layer can be obtained by coating a carbon paste or a copper paste, and then high-temperature curing to form an antenna module.

[0059] When the shielding film layer is prepared by a coating process, a suitable curing temperature and curing time can be selected according to different materials. For example, when a carbon paste with a brand of C374 is selected, the curing temperature is 130°C and the curing time is 10 min. When a copper paste with a brand of PCSG-2301-5 is selected, the curing temperature is 150°C and the curing time is 60 min.

[0060] ​In some embodiments, in order to improve the preparation efficiency of the antenna module, the support layer and the guide layer can be stacked by means of the pressing plate. Figure 4 A flow chart of another method for preparing an antenna module is shown. As shown in Figure 4 The method for preparing an antenna module provided by the embodiments of the present disclosure comprises the following steps:

[0061] In step S401, at least one pressing plate and at least one guide layer are stacked on the radiation surface of the radiation module, the at least one pressing plate and the at least one guide layer are stacked alternately, and among the at least one pressing plate and the at least one guide layer, the layer closest to the radiation module is the pressing plate, and the layer farthest from the radiation module is the guide layer. At least one shielding base ring is embedded in the pressing plate, and the shielding base ring penetrates the thickness of the pressing plate.

[0062] The pressing plate includes but is not limited to an epoxy glass cloth laminated plate (FR-4).

[0063] Figure 5 A structural schematic diagram of a pressing plate is shown. As shown in Figure 5 There are 24 shielding base rings 41 arranged on the pressing plate 40, and the shielding base ring 41 and the pressing plate 40 are connected by the connecting part 43. One or more connecting parts 43 can be arranged between the shielding base ring 41 and the pressing plate 40, and the shielding base ring 41 and the pressing plate 40 are connected by the one or more connecting parts 43.

[0064] In some embodiments, the shielding base ring 41 is directly processed on the pressing plate 40. For example, a hole 44 penetrating the thickness of the pressing plate 40 is processed on the pressing plate 40, a groove 45 with the same curvature as the hole 44 is processed around the hole 44, the groove 45 penetrates the thickness of the pressing plate 40, and the connecting part 43 is formed at the joint position of two adjacent grooves 45, so that the shielding base ring 41 is connected to the pressing plate 40 only by the connecting part 43.

[0065] In step S402, the support layer is filled in the shielding base ring.

[0066] The support layer is a lightweight material. The lightweight material includes a foam material or a honeycomb material, the loss tangent of the lightweight material is less than 0.004, and the density of the lightweight material is less than 0.11 g / cm 3 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.

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

[0068] In the embodiment of the present disclosure, the guide layer is a single-sided copper-clad plate, and the single-sided copper-clad plate is stacked on the surface of the pressing plate.

[0069] In step S403, the radiation module, the at least one pressing plate, the support layer, and the at least one guide layer are subjected to hot-pressing treatment through a hot-pressing process, so that the radiation module, the support layer, the shielding base ring, and the guide layer form an integrally formed structure.

[0070] In the hot-pressing process, the lightweight material is extruded and deformed, and the shielding base ring can limit the lightweight material to avoid extrusion of the lightweight material to other areas.

[0071] In step S404, the shielding base ring is separated from the pressing plate.

[0072] The connecting part is cut off, so that the shielding base ring is separated from the pressing plate, and an antenna module without a shielding film layer is obtained.

[0073] In 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, an antenna module is obtained, and the shielding base ring and the shielding film layer form a shielding module.

[0074] In the embodiment of the present disclosure, a copper film layer can be electroplated on the outer surface of the shielding base ring and the outer surface of the radiation module through an electroplating process; a carbon film layer or a copper film layer can also be obtained by coating carbon paste or copper paste, and then high-temperature solidification forming to obtain an antenna module.

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

[0076] The antenna module preparation method provided by the embodiments of the present disclosure comprises the following steps: stacking at least one pressing plate and at least one guiding layer on the radiation surface of a radiation module, the at least one pressing plate and the at least one guiding layer are stacked alternately, the bottommost layer of the at least one pressing plate and the at least one guiding layer is the pressing plate, and the topmost layer of the at least one pressing plate and the at least one guiding layer is the guiding layer, at least one shielding base ring is embedded in the pressing plate and penetrates the thickness of the pressing plate, the support layer is placed in the shielding base ring, and the radiation module, the support layer, the shielding base ring and the guiding layer are formed into an integrated structure through a hot-pressing process, the shielding base ring is separated from the pressing plate, and a shielding film layer is formed on the outer surface of the shielding base ring and the outer surface of the radiation module, so that an antenna module is obtained. Since the support layer is made of light material, the weight of the antenna module can be reduced, which helps to reduce the total weight of the satellite antenna, thereby reducing the launch cost of the satellite antenna. The shielding module is arranged around the side surface of the radiation module, the support layer and the guiding layer, which can improve the axial ratio of the antenna. The shielding module, the radiation module, the support layer and the guiding layer are formed into an integrated structure, which can reduce the design, process and assembly difficulty of the antenna module, and improve the integration of the antenna module.

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

[0078] Figure 6 An exploded view of an antenna module provided by the embodiments of the present disclosure is shown, Figure 7 A flowchart of an antenna module preparation method provided by the embodiments of the present disclosure is shown. In combination with Figure 6 and Figure 7 , the preparation method of the antenna module comprises the following steps:

[0079] Step S601: stacking a first adhesive layer 51 on the radiation surface of a radiation module 1.

[0080] Step S602: stacking a pressing plate 40 on the upper surface of the first adhesive layer 51, and at least one shielding base ring 41 is arranged on the pressing plate 40, and the shielding base ring 41 penetrates the thickness of the pressing plate 40.

[0081] Step S603: filling a support layer 2 in the shielding base ring 41.

[0082] Step S604: stacking a second adhesive layer 52 on the upper surface of the pressing plate 40.

[0083] Step S605: stacking a guiding layer 3 on the upper surface of the second adhesive layer 52.

[0084] Step S606, the laminated radiation module 1, the first adhesive layer 51, the lightweight material second adhesive layer 52 and the guide layer 3 are subjected to hot pressing treatment through a hot pressing process, so that the radiation module 1, the first adhesive layer 51, the support layer 2, the second adhesive layer 52 and the guide layer 3 form an integrally formed structure.

[0085] In the hot pressing process, part of the material of the first adhesive layer 51 and the second adhesive layer 52 after melting can flow 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] In the hot pressing process, after the first adhesive layer 51 and the second adhesive layer 52 melt, they are uniformly distributed between the radiation module 1 and the support layer 2, and between the support layer 2 and the guide layer 3.

[0087] In the hot pressing process, the shielding base ring can limit the lightweight material during the hot pressing process, preventing the lightweight material from being squeezed into other areas.

[0088] Figure 8 A schematic diagram of the integrally formed structure in the embodiment of the present disclosure is shown. As shown in Figure 8 , the radiation module 1, the first adhesive layer 51, the support layer 2, the second adhesive layer 52 and the guide layer 3 are tightly bonded together to form an integrally formed structure.

[0089] Step S607, separate the shielding base ring 41 from the pressing plate 7.

[0090] The connecting portion is cut off, thereby separating the shielding base ring from the pressing plate, and obtaining an antenna module without a shielding film layer, as shown in Figure 9 .

[0091] Step S608, form a shielding film layer on the outer surface of the shielding base ring and the outer surface of the radiation module, obtain an antenna module, and the shielding base ring and the shielding film layer form a shielding module.

[0092] Figure 10 A curve diagram of the standing wave and isolation of the antenna module provided by the embodiment of the present disclosure is shown, the abscissa represents frequency (GHz), and the ordinate represents standing wave and isolation (dB). As shown in Figure 10 , 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 A diagram of the antenna module provided by the embodiment of the present disclosure is shown, the abscissa represents angle (deg), and the ordinate represents gain value (dB). As shown in Figure 11 , the main polarization gain and the cross polarization gain differ by 14 dB.

[0094] Figure 12The axial ratio curve of the antenna module provided by the embodiment of the present disclosure is shown, in which the horizontal coordinate represents angle (deg) and the vertical coordinate represents axial ratio (dB). Figure 12 As shown, from 1.92 GHz to 2.2 GHz frequency band, ±50° wave width, the maximum axial ratio of 0° and 90° profiles is less than 3.6 dB.

[0095] In a third aspect, the embodiment of the present disclosure provides a base station antenna.

[0096] Figure 13 The structural schematic diagram of a base station antenna provided by the embodiment of the present disclosure is shown. Figure 13 As shown, the base station antenna comprises at least one antenna module 10 and a large plate 20, the at least one antenna module 10 is attached to the surface of the large plate 20, and the antenna module 10 adopts the antenna module provided by the embodiment of the present disclosure, which will not be described here.

[0097] The base station antenna provided by the embodiment can be a satellite antenna or a ground antenna.

[0098] The base station antenna in the embodiment of the present disclosure comprises at least one antenna module and a large plate, the antenna module adopts the antenna module provided by the embodiment of the present disclosure, and the total weight of the satellite antenna can be reduced due to the adoption of the lightweight material of the support layer, thereby reducing the launch cost of the satellite antenna; the shielding module is arranged around the side surface of the radiation module, the at least one support layer and the at least one directing layer, which can improve the axial ratio of the base station antenna, the shielding module and the radiation module, the at least one support layer and the at least one directing layer are integrally formed, compared with the independent design of the shielding module and the directing layer, the design, process and assembly difficulty of the base station antenna can be reduced, and the integration of the base station antenna can be improved.

[0099] The present disclosure has disclosed example embodiments, and although specific terms are used, they are only used and should only be interpreted as general explanatory meanings, and are not used for limiting purposes. In some examples, it is obvious to those skilled in the art that features, characteristics and / or elements described in combination with a specific embodiment can be used alone, or can be used in combination with features, characteristics and / or elements described in combination with other embodiments, unless otherwise explicitly indicated. Therefore, those skilled in the art will understand that various changes in form and details can be made without departing from the scope of the present disclosure illustrated by the appended claims.

Claims

1. An antenna module, characterized by The antenna module comprises a radiation module, at least one support layer, at least one guide layer, and a shielding module, the at least one support layer and the at least one guide layer are alternately stacked on the radiation surface of the radiation module, and among the at least one support layer and the at least one guide layer, the layer closest to the radiation module is the support layer, and the layer farthest from the radiation module is the guide layer; The shielding module is arranged around the side surface of the radiation module, the at least one support layer, and the at least one guide layer, and the shielding module and the radiation module, the at least one support layer, and the at least one guide layer are integrally formed.

2. The antenna module of claim 1, wherein, Further comprising: A first adhesive layer is stacked between the radiation module and the support layer for bonding the radiation module and the support layer together; A second adhesive layer is stacked between the support layer and the guide layer for bonding the support layer and the guide layer together.

3. The antenna module of claim 2, wherein, The first adhesive layer and the second adhesive layer comprise at least one of the following characteristics: An epoxy thermosetting material is used; The tangent loss value is less than 0.002; The thickness is less than 0.12 mm.

4. The antenna module of claim 1 or 2, wherein, The support layer uses a lightweight material, and the lightweight material comprises at least one of the following characteristics: The lightweight material is a foam material or a honeycomb material; The tangent loss value of the lightweight material is less than 0.004; The lightweight material has a density of less than 0.11 g / cm 3 .

5. The antenna module of claim 4, wherein, The foam material comprises one or more of modified polyimide MPI foam and polymethacrylimide PMI foam; The honeycomb material comprises one or more of para-aramid honeycomb and glass fiber honeycomb.

6. The antenna module of claim 1 or 2, wherein, The shielding module comprises a shielding base ring and a shielding film layer, and the shielding film layer is arranged on the outer surface of the shielding base ring and the outer surface of the radiation module.

7. The antenna module of claim 6, wherein, The shielding film layer comprises a copper film layer or a carbon film layer.

8. A method for manufacturing an antenna module, characterized in that, Comprising: At least one support layer and at least one guide layer are stacked on the radiation surface of the radiation module, the at least one support layer and the at least one guide layer are alternately stacked, and among the at least one support layer and the at least one guide layer, the layer closest to the radiation module is the support layer, and the layer farthest from the radiation module is the guide layer; The radiation module, the at least one support layer, and the at least one guide layer are heat-pressed by a heat-pressing process to form an integrally formed structure of the radiation module, the support layer, and the guide layer; A shielding film layer is formed on the outer surface of the radiation module, the support layer, and the guide layer to obtain the antenna module.

9. The method of claim 8, wherein the antenna module is prepared by: The shielding film layer is formed on the outer surface of the radiation module, the support layer, and the guide layer by electroplating copper using an electroplating process; Alternatively, the shielding film layer is formed on the outer surface of the radiation module, the support layer, and the guide layer by coating carbon paste or copper paste using a coating process. The antenna module comprises at least one antenna module and a large plate, the antenna module is attached to the surface of the large plate, and the antenna module comprises the antenna module of any one of claims 1 to 7.

10. A base station antenna, comprising: ​

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