Base station antenna housing and preparation method thereof, and base station antenna

Abstract

The invention provides a base station antenna housing, a preparation method thereof and a base station antenna. The base station antenna housing comprises a top cover and a first bottom cover, the first bottom cover is arranged at the opening position of the top cover and is fixedly connected with the top cover, a first accommodating cavity for accommodating the first radiation unit is formed between the first bottom cover and the top cover, and the radiation surface of the first radiation unit faces the direction of the top cover; the first bottom cover comprises a first metal middle layer which is laid on the plane where the first bottom cover is located and used for reflecting electromagnetic waves of the first radiation unit. The base station antenna housing provided by the invention is simple in structure, and the weight and the preparation cost of the base station antenna housing are reduced.

Description

Technical Field

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

[0002] Antenna radomes are used to protect the core components of an antenna from the influence of the external environment, thereby extending the lifespan of the antenna core components, while also ensuring electromagnetic wave transmittance. With the rapid development of communication technology, radomes are evolving towards lightweight design, high wave transmittance, and environmental friendliness. However, current radomes are complex in structure, heavy, and inconvenient for transportation, storage, and tower mounting, and are also costly. Summary of the Invention

[0003] This disclosure provides a base station radome, a method for preparing the same, and a base station antenna.

[0004] In a first aspect, embodiments of this disclosure provide a base station antenna radome, comprising:

[0005] Top cover;

[0006] A first bottom cover is disposed at the opening of the top cover and is fixedly connected to the top cover. A first receiving cavity for accommodating a first radiating unit is formed between the first bottom cover and the top cover. The radiating surface of the first radiating unit faces the top cover.

[0007] The first bottom cover includes a first metal intermediate layer, which is laid on the plane of the first bottom cover and is used to reflect the electromagnetic waves of the first radiating unit.

[0008] Secondly, embodiments of this disclosure provide a method for preparing a base station antenna radome, comprising:

[0009] Form a top cover;

[0010] A first bottom cover is formed, the first bottom cover including a first metal intermediate layer, the first metal intermediate layer being laid on the plane of the first bottom cover;

[0011] The first bottom cover is disposed at the opening position of the top cover and is fixedly connected to the top cover, forming a first receiving cavity between the first bottom cover and the top cover to accommodate the first radiation unit. The radiation surface of the first radiation unit faces the top cover, and the first metal intermediate layer is used to reflect the electromagnetic waves of the first radiation unit.

[0012] Thirdly, embodiments of this disclosure provide a base station antenna, including a radiating element and a base station antenna radome, wherein the radiating element is disposed within the base station antenna radome, and the base station antenna radome includes any of the base station antenna radomes provided in embodiments of this disclosure.

[0013] In this embodiment of the base station radome, a first bottom cover is disposed at the opening of the top cover and fixedly connected to the top cover. That is, the first bottom cover and the top cover adopt a separate structure, which can reduce the manufacturing difficulty and cost of the base station radome compared to an integrated structure. A first receiving cavity is formed between the first bottom cover and the top cover to accommodate the first radiating unit. The first bottom cover serves as a protective structure to prevent damage to the first radiating unit. Moreover, the first bottom cover includes a first metal intermediate layer, which is laid on the plane of the first bottom cover. The radiating surface of the first radiating unit faces the direction of the top cover. The first metal intermediate layer can reflect the electromagnetic waves of the first radiating unit, so there is no need to set a separate reflector, which simplifies the structure of the base station radome and reduces the weight and manufacturing cost of the base station radome. Attached Figure Description

[0014] In the accompanying drawings of the embodiments disclosed herein:

[0015] Figure 1 A schematic diagram of the structure of a base station antenna radome provided in an embodiment of this disclosure is shown;

[0016] Figure 2 A schematic diagram of another base station antenna radome provided in an embodiment of this disclosure is shown;

[0017] Figure 3 A three-dimensional schematic diagram of a base station antenna radome provided in an embodiment of this disclosure is shown;

[0018] Figure 4 This diagram shows a partial structural schematic of a base station antenna radome provided in an embodiment of the present disclosure;

[0019] Figure 5 This diagram shows a partial structural schematic of a base station antenna radome provided in an embodiment of the present disclosure;

[0020] Figure 6 A schematic diagram of the structure of a guide rail provided in an embodiment of this disclosure is shown;

[0021] Figure 7 A schematic diagram of the structure of a guide rail buckle provided in an embodiment of this disclosure is shown;

[0022] Figure 8 This diagram illustrates a structure in an embodiment of the present disclosure that uses a connecting assembly to connect the top cover and the first bottom cover.

[0023] Figure 9 A schematic diagram of the structure of a middle end cap provided in an embodiment of this disclosure is shown;

[0024] Figure 10 A schematic diagram of a portion of the structure of the first bottom cover provided in an embodiment of this disclosure is shown;

[0025] Figure 11 A schematic diagram of a portion of the structure of the second bottom cover provided in an embodiment of this disclosure is shown;

[0026] Figure 12 A flowchart of a method for manufacturing a base station radome according to an embodiment of this disclosure is shown;

[0027] Figure 13 A schematic diagram illustrating the manufacturing process of a top cover according to an embodiment of this disclosure is shown;

[0028] Figure 14 A schematic diagram illustrating the manufacturing process of a first bottom cover according to an embodiment of the present disclosure is shown;

[0029] Figure 15 A schematic diagram illustrating the manufacturing process of a second bottom cover according to an embodiment of this disclosure is shown;

[0030] Figure 16 This diagram illustrates the structure of a base station antenna according to an embodiment of the present disclosure. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Where there is no conflict, the various embodiments of this disclosure and the features thereof in the embodiments may be combined with each other.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] In a first aspect, embodiments of this disclosure provide a base station antenna radome.

[0039] Figure 1 This illustration shows a structural schematic diagram of a base station antenna radome provided in an embodiment of the present disclosure. Figure 10 A schematic diagram of a portion of the structure of the first bottom cover provided in an embodiment of this disclosure is shown. For example... Figure 1 and Figure 10 As shown, the base station antenna cover provided in this embodiment includes a top cover 100 and a first bottom cover 200.

[0040] A first bottom cover 200 is disposed at the opening of the top cover 100 and is fixedly connected to the top cover 100. A first receiving cavity 110 for accommodating the first radiating unit is formed between the first bottom cover 200 and the top cover 100. The radiating surface of the first radiating unit faces the top cover 100. The first bottom cover 200 includes a first metal interlayer 201, which is laid on the plane of the first bottom cover 200 and is used to reflect the electromagnetic waves of the first radiating unit.

[0041] In this embodiment of the base station radome, a first bottom cover 200 is disposed at the opening of the top cover 100 and fixedly connected to the top cover 100. That is, the first bottom cover 200 and the top cover 100 adopt a separate structure, which can reduce the manufacturing difficulty and cost of the base station radome compared to an integrated structure. A first receiving cavity 110 for accommodating the first radiating unit is formed between the first bottom cover 200 and the top cover 100. Therefore, the first bottom cover 200, as a protective structure, can prevent the first radiating unit from being damaged. Moreover, the first bottom cover 200 includes a first metal intermediate layer 201, which is laid on the plane of the first bottom cover 200. The radiating surface of the first radiating unit faces the top cover 100. The first metal intermediate layer 201 can reflect the electromagnetic waves of the first radiating unit. Therefore, it is no longer necessary to set a separate reflector, which simplifies the structure of the base station radome and reduces the weight and manufacturing cost of the base station radome.

[0042] In some embodiments, the top cover 100 is a U-shaped structure, or the first bottom cover 200 is a U-shaped structure, or both the top cover 100 and the first bottom cover 200 are U-shaped structures, and the opening of the first bottom cover 200 and the opening of the top cover 100 are arranged opposite to each other, which can increase the volume of the first receiving cavity 110.

[0043] Figure 2 This illustration shows a schematic diagram of another base station antenna radome provided in an embodiment of the present disclosure. Figure 3 A perspective view of a base station antenna radome provided in an embodiment of this disclosure is shown. (In conjunction with...) Figure 2 and Figure 3 The base station antenna radome also includes a second bottom cover 300. The first bottom cover 200 and the second bottom cover 300 are disposed in different areas of the opening position of the top cover 100 and are fixedly connected to the top cover 100. A second receiving cavity 310 for accommodating the second radiating unit is formed between the second bottom cover 300 and the top cover 100. The radiating surface of the second radiating unit (not shown in the figure) faces the top cover 100.

[0044] Figure 4 A schematic diagram of a partial structure of a base station radome provided in an embodiment of this disclosure is shown. For example... Figure 4 As shown, the second bottom cover 300 includes a second metal intermediate layer 301, which is laid on the plane of the second bottom cover 300. Multiple frequency selection holes 306 that penetrate its thickness are provided at intervals on the second metal intermediate layer 301.

[0045] A second receiving cavity 310 for accommodating the second radiating unit is formed between the second bottom cover 300 and the top cover 100. The second bottom cover 300 serves as a protective structure to prevent damage to the second radiating unit. Furthermore, the second bottom cover 300 includes a second metal intermediate layer 301, which is provided with a plurality of frequency selection holes 306 that penetrate its thickness at intervals. This enables the second bottom cover 300 to have a frequency selection function, that is, the second bottom cover 300 can transmit electromagnetic waves from the first radiating unit and reflect electromagnetic waves from the second transmitting unit. This increases the functionality of the base station radome, further simplifies the structure of the base station radome, and reduces the weight and manufacturing cost of the base station radome.

[0046] like Figure 1 and Figure 2 As shown, the base station radome also includes a connecting component 400, which is used to fix the first bottom cover 200 and the top cover 100 together, and to fix the second bottom cover 300 and the top cover 100 together. That is, the first bottom cover 200 and the top cover 100, and the second bottom cover 300 and the top cover 100 are fixedly connected by their respective connecting components 400. The top cover 100, the first bottom cover 200, and the second bottom cover 300 are a spliced ​​structure, which can reduce the manufacturing cost of the base station radome.

[0047] Figure 5 This diagram shows a partial structural schematic of a base station antenna radome provided in an embodiment of the present disclosure. Figure 6 A schematic diagram of a guide rail provided in an embodiment of this disclosure is shown. Figure 7 A schematic diagram of a guide rail buckle provided in an embodiment of this disclosure is shown. Figure 5 , Figure 6 and Figure 7 As shown, the connecting assembly 400 includes a guide rail 410 and a plurality of guide rail clips 420. A first guide rail groove 411 and a second guide rail groove 412 are provided on the guide rail 410, and the first guide rail groove 411 and the second guide rail groove 412 extend in the same direction.

[0048] Some of the multiple guide rail buckles 420 are spaced apart at the fixed end of the top cover 100, and the guide rail buckles 420 are engaged in the first guide rail groove 411 to fix the top cover 100 to the guide rail 410; some of the multiple guide rail buckles 420 are spaced apart at the fixed end of the first bottom cover 200 and are engaged in the second guide rail groove 412 to connect the first bottom cover 200 to the guide rail 410.

[0049] Figure 8 A schematic diagram of the structure in an embodiment of this disclosure, showing the connection between the top cover and the first bottom cover using a connecting assembly, is shown. Figure 8As shown, the top cover 100 is fixed in the first guide groove 411 of the connecting assembly 400, and the first bottom cover 200 is fixed in the second guide groove 412 of the connecting assembly 400. The connecting assembly 400 is used to fix the top cover 100 and the first bottom cover 200 together.

[0050] Some of the multiple guide rail clips 420 are spaced apart at the fixed end of the top cover 100, and the guide rail clips 420 are engaged in the first guide rail groove 411 to connect the top cover 100 to the guide rail 410. Some of the multiple guide rail clips 420 are spaced apart at the fixed end of the first bottom cover 200 and are engaged in the second guide rail groove 412 to connect the first bottom cover 200 to the guide rail 410. The top cover 100 and the first bottom cover 200 are fixedly connected by the connecting assembly 400. The connection method between the second bottom cover 300 and the guide rail 410 is the same as that between the first bottom cover 200 and the guide rail 410, and will not be described again here.

[0051] like Figure 7 As shown, the guide rail buckle 420 includes a first guide rail buckle body 421 and a second guide rail buckle body 422. A first pin 423 is provided at the first end of the first guide rail buckle body 421, and a first pin hole 424 penetrating its thickness is provided at the second end of the first guide rail buckle body 421.

[0052] The structure of the second guide rail buckle body 422 is the same as that of the first guide rail buckle body 421. The first end of the second guide rail buckle body 422 is provided with a second pin hole (not shown in the figure) that penetrates its thickness. The second end of the second guide rail buckle body 422 is provided with a second pin (not shown in the figure). The outer diameter of the first pin 423 matches the inner diameter of the second pin hole, so that the first pin 423 can be inserted into the second pin hole. The outer diameter of the second pin matches the inner diameter of the first pin hole 424, so that the second pin can be inserted into the first pin hole 424.

[0053] Combination Figure 5 and Figure 7Fixing holes 427 are provided at the fixing ends of the top cover 100, the first bottom cover 200, and the second bottom cover 300. The first guide rail buckle body 421 and the second guide rail buckle body 422 are respectively located on both sides of the top cover 100, the first bottom cover 200, and the second bottom cover 300. A first pin 423 passes through the fixing hole 427 and is inserted into a second pin hole, and a second pin passes through the fixing hole 427 and is inserted into a first pin hole 424, used to fix the guide rail buckle 420 to the top cover 100, the first bottom cover 200, and the second bottom cover 300. The first guide rail buckle body 421 and the second guide rail buckle body 422 of the guide rail buckle 420 fixed on the top cover 100 are respectively disposed on both sides of the top cover 100. The first guide rail buckle body 421 and the second guide rail buckle body 422 of the guide rail buckle 420 fixed on the first bottom cover 200 are respectively disposed on both sides of the first bottom cover 200. The first guide rail buckle body 421 and the second guide rail buckle body 422 of the guide rail buckle 420 fixed on the second bottom cover 300 are respectively disposed on both sides of the second bottom cover 300.

[0054] Combination Figure 6 and Figure 7 The first guide rail groove 411 is provided with a first wedge-shaped groove 411a and a second wedge-shaped groove 411b. Both opposite sides of the first guide rail buckle body 421 are provided with protrusions 428. The first guide rail buckle body 421 is inserted into the first wedge-shaped groove 411a, and the protrusions 428 of the first guide rail buckle body 421 fit against the inner wall of the first wedge-shaped groove 411a. The protrusions 428 of the first guide rail buckle body 421 help to confine the first guide rail buckle body 421 within the first wedge-shaped groove 411a, thereby preventing the guide rail buckle 420 from falling off.

[0055] The structure of the second guide rail buckle body 422 is the same as that of the first guide rail buckle body 421, that is, both opposite sides of the second guide rail buckle body 422 are provided with protrusions. The second guide rail buckle body 422 is inserted into the second wedge-shaped groove 411b, and the protrusions of the second guide rail buckle body 422 fit snugly against the second wedge-shaped groove 411b. The protrusions of the second guide rail buckle body 422 help to confine the second guide rail buckle body 422 within the second wedge-shaped groove 411b.

[0056] like Figure 6 As shown, the bottom of the first guide rail groove 411 is provided with a first insertion groove 413, and the fixed end of the top cover 100 is inserted into the first insertion groove 413; the bottom of the second guide rail groove 412 is provided with a second insertion groove 414, and the fixed ends of the first bottom cover 200 / second bottom cover 300 are inserted into the second insertion groove 414.

[0057] In some embodiments, a first adhesive recess 415 is provided at the opening of the first guide rail groove 411, and a sealing strip (not shown) is provided between the top cover 100 and the first adhesive recess 415; a second adhesive recess 416 is provided at the opening of the second guide rail groove 412, and a sealing strip is provided between the first bottom cover 200 and the second adhesive recess 416, and a sealing strip is provided between the second bottom cover 300 and the second adhesive recess 416. The sealing strip can prevent dust and moisture in the air from entering the first and second receiving cavities. To improve the reliability of the seal, sealant can be applied to the sealing strip when installing it.

[0058] Figure 9 A schematic diagram of the structure of a mid-end cap according to an embodiment of this disclosure is shown. (In conjunction with...) Figure 3 and Figure 9 The base station antenna cover also includes a middle cover 600, which includes a first end face and a second end face that are opposite to each other. The first end face and the second end face are respectively provided with a third insertion slot 601 and a fourth insertion slot 602. A first bottom cover 200 is inserted into the third insertion slot 601, and a second bottom cover 300 is inserted into the fourth insertion slot 602. The first end face and the second end face are opposite to each other of the middle cover 600.

[0059] In this embodiment, the middle cover 600 isolates the first receiving cavity 110 and the second receiving cavity 310. The first receiving cavity 110 is provided with an active radiating unit, and the second receiving cavity 310 is provided with a passive radiating unit. To improve the reliability of the connection between the middle cover 600 and the first bottom cover 200, and the connection between the middle cover 600 and the second bottom cover 300, the middle cover 600 and the first bottom cover 200, and the middle cover 600 and the second bottom cover 300, can be riveted together. To improve the sealing effect, waterproof adhesive can also be applied to the joint between the middle cover 600 and the first bottom cover 200, and to the joint between the middle cover 600 and the second bottom cover 300.

[0060] Figure 10 A schematic diagram of a portion of the structure of the first bottom cover provided in an embodiment of this disclosure is shown. For example... Figure 10 As shown, the first bottom cover 200 also includes a first fiber layer 202, a first adhesive film layer 203, a second adhesive film layer 204, and a second fiber layer 205. The first fiber layer 202, the first adhesive film layer 203, the first metal intermediate layer 201, the second adhesive film layer 204, and the second fiber layer 205 are stacked sequentially from top to bottom in the thickness direction of the first bottom cover 200.

[0061] Figure 11 A schematic diagram of a portion of the structure of the second bottom cover provided in an embodiment of this disclosure is shown. For example... Figure 11As shown in the present embodiment, the second bottom cover 300 further includes a third fiber layer 302, a third adhesive film layer 303, a fourth adhesive film layer 304 and a fourth fiber layer 305, which are stacked sequentially in the thickness direction of the second bottom cover 300.

[0062] Secondly, this disclosure provides a method for preparing a base station antenna radome.

[0063] Figure 12 A flowchart illustrating a method for manufacturing a base station radome according to an embodiment of this disclosure is shown. Figure 12 As shown, the method for manufacturing a base station radome includes:

[0064] Step S1201: Form the top cover 100.

[0065] In some embodiments, the top cover 100 has a U-shaped structure and can be formed from a continuous first fiber cloth material using a hot bending die or a molding die. The first fiber cloth includes continuous fiber cloth and woven fiber cloth. The continuous fiber cloth includes at least one of fiber woven prepreg and continuous fiber prepreg. Fiber woven prepreg refers to a prepreg formed by impregnating a woven fabric made of long fibers in resin, and then pressing the prepreg into a fiber woven cloth using a roller press, with a thickness of up to 1.2 mm, and the internal fibers being continuous long glass fibers with a fiber content between 40% and 70%. Continuous fiber prepreg refers to a fiber prepreg formed by impregnating continuous fibers in a unidirectional direction with a thermoplastic resin to form a single layer of prepreg, and then stacking at least two layers of single-layer prepreg in different directions, and pressing the stacked prepreg into a continuous fiber cloth using a roller press, with a thickness of up to 1.2 mm.

[0066] Figure 13 A schematic diagram illustrating the manufacturing process of a top cover according to an embodiment of this disclosure is shown. For example... Figure 13 As shown, the first fiber cloth 700 is heated to a preset temperature to soften the thermoplastic resin inside the first fiber cloth 700. The first fiber cloth 700 is then extruded using a punch 701 and a die 702 to obtain the required curvature. After cooling and shaping, a U-shaped top cover 100 is formed.

[0067] Step S1202: A first bottom cover 200 is formed. The first bottom cover 200 includes a first metal intermediate layer 201. The first metal intermediate layer 201 is laid on the plane of the first bottom cover 200 and is used to reflect the electromagnetic waves of the first radiation unit. The first bottom cover 200 is set at the opening position of the top cover 100 and fixedly connected to the top cover 100. A first receiving cavity 110 for accommodating the first radiation unit is formed between the first bottom cover 200 and the top cover 100. The radiation surface of the first radiation unit faces the top cover 100.

[0068] The base station radome manufacturing method in this embodiment of the present disclosure places a first bottom cover 200 at the opening of the top cover 100 and fixes it to the top cover 100. That is, the first bottom cover 200 and the top cover 100 adopt a separate structure, which can reduce the manufacturing difficulty and manufacturing cost of the base station radome compared with an integrated structure. A first receiving cavity 110 for accommodating the first radiating unit is formed between the first bottom cover 200 and the top cover 100, so that the first bottom cover 200 acts as a protective structure to prevent the first radiating unit from being damaged. Moreover, the first bottom cover 200 includes a first metal intermediate layer 201, which is laid on the plane of the first bottom cover 200. The radiating surface of the first radiating unit faces the top cover 100. The first metal intermediate layer 201 can reflect the electromagnetic waves of the first radiating unit. Therefore, it is no longer necessary to set a separate reflector, which simplifies the structure of the base station radome and reduces the weight and manufacturing cost of the base station radome.

[0069] Figure 14 A schematic diagram illustrating the manufacturing process of a first bottom cover according to an embodiment of this disclosure is shown. Figure 14 As shown, the first fiber layer 202, the first adhesive film layer 203, the first metal interlayer 201, the second adhesive film layer 204, and the second fiber layer 205 are stacked from top to bottom and heated. The first fiber layer 202 and the first metal interlayer 201, as well as the first metal interlayer 201 and the second fiber layer 205, are bonded together using the first adhesive film layer 203 and the second adhesive film layer 204, respectively, to obtain the first fiber cloth 700. The first fiber cloth 700 is a continuous fiber cloth reinforced with metal foil material. After heating the first fiber cloth 700, it is extruded using a punch 701 and a die 702 to obtain the required curvature, and processed into a U-shaped first bottom cover 200. Then, the top cover 100 and the first bottom cover 200 are connected using a connecting assembly 400. Since a metal foil is set inside the first bottom cover 200, the first bottom cover 200 can serve as a reflector for an active radiation unit.

[0070] In some embodiments, the first fiber layer 202 and the second fiber layer 205 comprise at least one of woven fiber prepreg or continuous fiber prepreg, with a thickness of 0.5 mm. The first adhesive layer 203 and the second adhesive layer 204 may have a thickness of 0.1 mm; the first metal interlayer 201 comprises a sheet foil of aluminum or copper, with a thickness of 0.05 mm.

[0071] In some embodiments, the method for manufacturing a base station radome further includes: forming a second bottom cover 300, the second bottom cover 300 including a second metal intermediate layer 301, the second metal intermediate layer 301 being laid on the plane of the second bottom cover 300, and a plurality of frequency selection holes 306 extending through its thickness being provided at intervals on the second metal intermediate layer 301; setting the second bottom cover 300 at the opening position of the top cover 100 and fixing it to the top cover 100, the first bottom cover 200 and the second bottom cover 300 being set in different regions of the opening position of the top cover 100, and forming a second receiving cavity 310 for accommodating a second radiating unit between the second bottom cover 300 and the top cover 100, the radiating surface of the second radiating unit facing the top cover 100.

[0072] Figure 15 A schematic diagram illustrating the manufacturing process of a second bottom cover according to an embodiment of this disclosure is shown. Figure 15 As shown, multiple frequency selection holes 306 penetrating the thickness of the second metal intermediate layer 301 are processed, that is, the second metal intermediate layer 301 has a hollow structure and has a frequency selection function. The third fiber layer 302, the third adhesive film layer 303, the second metal intermediate layer 301, the fourth adhesive film layer 304, and the fourth fiber layer 305 are stacked from top to bottom and heated. The third fiber layer 302 and the second metal intermediate layer 301, as well as the second metal intermediate layer 301 and the fourth fiber layer 305, are bonded together by the third adhesive film layer 303 and the fourth adhesive film layer 304, respectively, to obtain the second fiber cloth 500. The second fiber cloth 500 is heated and then extruded using a punch 701 and a die 702 to form a U-shaped second bottom cover 300. The top cover 100 and the second bottom cover 300 are then connected using a connecting assembly 400. Since a metal foil is set inside the second bottom cover 300, the second bottom cover 300 can serve as a reflector for a passive radiation unit. At the same time, it can completely transmit the electromagnetic waves of the active radiation unit without affecting the electromagnetic radiation of the active radiation unit.

[0073] In some embodiments, the method further includes forming a connecting component 400, which includes a guide rail 410 and a guide rail buckle 420. A first guide rail groove 411 and a second guide rail groove 412 are provided on the guide rail 410, and the first guide rail groove 411 and the second guide rail groove 412 extend in the same direction.

[0074] Some of the multiple guide rail buckles 420 are spaced apart on the fixed end of the top cover 100 and snapped into the first guide rail groove 411; some of the multiple guide rail buckles 420 are spaced apart on the fixed end of the first bottom cover 200 and snapped into the second guide rail groove 412, for connecting the first bottom cover 200 and the top cover 100.

[0075] Some of the multiple guide rail buckles 420 are spaced apart on the fixed end of the top cover 100 and are snapped into the first guide rail groove 411; some of the multiple guide rail buckles 420 are spaced apart on the fixed end of the second bottom cover 300 and are snapped into the second guide rail groove 412, for connecting the second bottom cover 300 and the top cover 100.

[0076] In some embodiments, molten resin material is extruded through a die using an extrusion process and cooled and shaped at room temperature to obtain guide rail 410. For example, guide rail 410 is obtained by passing molten resin material through an extrusion die and cooling and shaped at room temperature. The material of guide rail 410 can be resin or a mixture of resin and short fibers, wherein the short fibers are less than 10 mm in length.

[0077] In some embodiments, resin material is injected into an injection mold under high temperature and high pressure using an injection molding process, and the guide rail buckle 420 is formed after cooling. For example, resin material is injected into an injection mold under high temperature and high pressure, and the guide rail buckle 420 is formed after cooling. The material of the guide rail buckle 420 can be resin or a mixture of resin and short fibers, wherein the short fibers are less than 10 mm in length.

[0078] In this embodiment, the fibers include one or more of glass fibers, ceramic fibers, mineral fibers, quartz fibers, and boron carbide fibers. Specifically, the glass fibers include one or more of E-glass fibers, C-glass fibers, S / R-glass fibers, and D-glass fibers; the ceramic fibers include one or more of alumina fibers, aluminosilicate fibers, silicon carbide fibers, and boron fibers; and the mineral fibers include one or more of basalt fibers and andesite fibers.

[0079] The resin includes one or more of PP (polypropylene), PE (polyethylene), PA6 (polyamide), ABS (acrylonitrile-butadiene-styrene copolymer), PC (polycarbonate), PVC (polyvinyl chloride), and PS (polystyrene).

[0080] In some embodiments, a middle end cover 600 is further formed, the middle end cover 600 including a first end face and a second end face, the first end face and the second end face respectively provided with a third insertion groove 601 and a fourth insertion groove 602, the first bottom cover 200 being inserted into the third insertion groove 601, and the second bottom cover 300 being inserted into the fourth insertion groove 602, the first end face and the second end face being opposite faces of the middle end cover 600. The middle end cover 600 isolates the first receiving cavity 110 and the second receiving cavity 310, the first receiving cavity 110 being provided with an active radiating unit, and the second receiving cavity 310 being provided with a passive radiating unit. To improve the reliability of the connection between the middle end cover 600 and the first bottom cover 200, and the connection between the middle end cover 600 and the second bottom cover 300, the middle end cover 600 and the first bottom cover 200 can be riveted together, and the middle end cover 600 and the second bottom cover 300 can be riveted together. To improve the sealing effect, waterproof adhesive can also be applied to the joint between the middle end cover 600 and the first bottom cover 200, and to the joint between the middle end cover 600 and the second bottom cover 300.

[0081] Table 1 shows a comparison of the performance parameters of several base station radomes. Comparative Example 1 is a fiberglass radome, Comparative Example 2 is a modified resin (PP) radome, and the embodiment is the base station radome provided in this disclosure.

[0082] Table 1

[0083]

[0084] The base station radome provided in this embodiment is thinner and has a much lower density than the fiberglass radome. The base station radome provided in this embodiment weighs 3 kg / m, the fiberglass radome weighs 5 kg / m, and the modified PP radome weighs 4.2 kg / m, making the base station radome provided in this embodiment lighter. The base station radome provided in this embodiment has a dielectric constant of 3.1 and a dielectric loss tangent of 0.0045, which is lower than the fiberglass radome's dielectric constant of 4.0 and dielectric loss tangent of 0.015, and comparable to the modified PP radome, demonstrating excellent dielectric properties.

[0085] Thirdly, embodiments of this disclosure provide a base station antenna.

[0086] Figure 16 This diagram illustrates the structure of a base station antenna according to an embodiment of the present disclosure. Figure 16 As shown, a base station antenna provided in this embodiment includes a radiating element 1601 and a base station antenna cover 1602. The radiating element is disposed inside the base station antenna cover, and the base station antenna cover includes the base station antenna cover provided in this embodiment. For the sake of brevity, it will not be described in detail here.

[0087] In some embodiments, the radiation unit includes a first radiation unit and a second radiation unit, wherein the first radiation unit is disposed in a first receiving cavity and the second radiation unit is disposed in a second receiving cavity.

[0088] In some embodiments, the first radiating element is an active radiating element, and the second radiating element is a passive radiating element.

[0089] In this embodiment of the base station antenna, a first bottom cover is disposed at the opening of the top cover and fixedly connected to the top cover, i.e., the first bottom cover and the top cover adopt a separate structure. Compared with a one-piece structure, this can reduce the manufacturing difficulty and cost of the base station antenna radome. A first receiving cavity is formed between the first bottom cover and the top cover to accommodate the first radiating unit, so that the first bottom cover acts as a protective structure to prevent the first radiating unit from being damaged. Moreover, the first bottom cover includes a first metal intermediate layer, which is laid on the plane of the first bottom cover. The radiating surface of the first radiating unit faces the direction of the top cover. The first metal intermediate layer can reflect the electromagnetic waves of the first radiating unit, so there is no need to set a separate reflector, which simplifies the structure of the base station antenna radome, reduces the weight and manufacturing cost of the base station antenna radome, and thus reduces the total weight and manufacturing cost of the base station antenna.

[0090] 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. A base station antenna radome, characterized in that, include: Top cover; A first bottom cover is disposed at the opening of the top cover and is fixedly connected to the top cover. A first receiving cavity for accommodating a first radiating unit is formed between the first bottom cover and the top cover. The radiating surface of the first radiating unit faces the top cover. The first bottom cover includes a first metal intermediate layer, which is laid on the plane of the first bottom cover and is used to reflect the electromagnetic waves of the first radiating unit.

2. The base station antenna radome according to claim 1, characterized in that, Also includes: The second bottom cover is disposed in a different region from the first bottom cover at the opening of the top cover and is fixedly connected to the top cover. A second receiving cavity for accommodating the second radiation unit is formed between the second bottom cover and the top cover, and the radiation surface of the second radiation unit faces the top cover. The second bottom cover includes a second metal intermediate layer, which is laid on the plane of the second bottom cover, and the second metal intermediate layer is provided with a plurality of frequency selection holes that penetrate its thickness at intervals.

3. The base station antenna radome according to claim 2, characterized in that, Also includes: A connecting component, the connecting component including a guide rail and a plurality of guide rail buckles, wherein a first guide rail groove and a second guide rail groove are provided on the guide rail, the first guide rail groove and the second guide rail groove extending in the same direction; Some of the multiple guide rail buckles are spaced apart at the fixed end of the top cover and snapped into the first guide rail groove to fix the top cover to the guide rail. Some of the multiple guide rail buckles are spaced apart at the fixed ends of the first bottom cover / second bottom cover and are snapped into the second guide rail groove to fix the first bottom cover / second bottom cover to the guide rail.

4. The base station antenna radome according to claim 3, characterized in that, The guide rail buckle includes a first guide rail buckle body and a second guide rail buckle body. A first pin is provided at the first end of the first guide rail buckle body, and a first pin hole penetrating its thickness is provided at the second end of the first guide rail buckle body. The first end of the second guide rail buckle body is provided with a second pin hole that penetrates its thickness, and the second end of the second guide rail buckle body is provided with a second pin. The outer diameter of the first pin matches the inner diameter of the second pin hole, and the outer diameter of the second pin matches the inner diameter of the first pin hole. The first guide rail buckle body and the second guide rail buckle body are respectively disposed on both sides of the top cover / first bottom cover / second bottom cover. The first pin passes through the fixing hole of the fixing end of the top cover / first bottom cover / second bottom cover and is inserted into the second pin hole. The second pin passes through the fixing hole and is inserted into the first pin hole, which is used to fix the guide rail buckle on the top cover / first bottom cover / second bottom cover.

5. The base station antenna radome according to claim 4, characterized in that, The first guide rail groove is provided with a first wedge groove and a second wedge groove. The first guide rail buckle body is provided with protrusions on both opposite sides. The first guide rail buckle body is inserted into the first wedge groove, and the protrusions of the first guide rail buckle body are in contact with the inner wall of the first wedge groove. The second guide rail buckle body has protrusions on both opposite sides. The second guide rail buckle body is inserted into the second wedge-shaped groove, and the protrusions of the second guide rail buckle body fit against the inner wall of the second wedge-shaped groove.

6. The base station antenna radome according to claim 3, characterized in that, The bottom of the first guide rail groove is provided with a first insertion groove, and the fixed end of the top cover is inserted into the first insertion groove; The bottom of the second guide rail groove is provided with a second insertion groove, and the fixed end of the first bottom cover / second bottom cover is inserted into the second insertion groove.

7. The base station antenna radome according to claim 3, characterized in that, A first adhesive storage groove is provided at the opening of the first guide rail groove, and a sealing strip is provided between the top cover and the first adhesive storage groove; A second adhesive storage groove is provided at the opening of the second guide rail groove, and a sealing strip is provided between the first bottom cover / second bottom cover and the second adhesive storage groove.

8. The base station antenna radome according to claim 3, characterized in that, The connecting component is made of resin material, or a mixture of resin and short fibers.

9. The base station antenna radome according to claim 2, characterized in that, Also includes: The middle end cover includes a first end face and a second end face that are opposite each other. The first end face and the second end face are respectively provided with a third insertion groove and a fourth insertion groove. The first bottom cover is inserted into the third insertion groove, and the second bottom cover is inserted into the fourth insertion groove.

10. The base station antenna radome according to claim 2, characterized in that, The first bottom cover further includes a first fiber layer, a first adhesive film layer, a second adhesive film layer and a second fiber layer, wherein the first fiber layer, the first adhesive film layer, the first metal intermediate layer, the second adhesive film layer and the second fiber layer are stacked sequentially in the thickness direction of the first bottom cover; And / or, the second bottom cover further includes a third fiber layer, a third adhesive film layer, a fourth adhesive film layer and a fourth fiber layer, wherein the third fiber layer, the third adhesive film layer, the second metal intermediate layer, the fourth adhesive film layer and the fourth fiber layer are stacked sequentially in the thickness direction of the second bottom cover; And / or, the material of the top cover includes fibrous materials.

11. A method for manufacturing a base station radome, characterized in that, include: Form a top cover; A first bottom cover is formed, the first bottom cover including a first metal intermediate layer, the first metal intermediate layer being laid on the plane of the first bottom cover; The first bottom cover is disposed at the opening position of the top cover and is fixedly connected to the top cover, forming a first receiving cavity between the first bottom cover and the top cover to accommodate the first radiation unit. The radiation surface of the first radiation unit faces the top cover, and the first metal intermediate layer is used to reflect the electromagnetic waves of the first radiation unit.

12. The method for preparing a base station radome according to claim 11, characterized in that, Also includes: A second bottom cover is formed, the second bottom cover includes a second metal intermediate layer, the second metal intermediate layer is laid on the plane of the second bottom cover, and the second metal intermediate layer is provided with a plurality of frequency selection holes that penetrate its thickness at intervals; The first bottom cover and the second bottom cover are disposed in different areas of the opening position of the top cover and are fixedly connected to the top cover. A second receiving cavity for accommodating the second radiation unit is formed between the second bottom cover and the top cover, and the radiation surface of the second radiation unit faces the top cover.

13. The method for preparing a base station radome according to claim 12, characterized in that, Also includes: A connecting assembly is formed, the connecting assembly including a guide rail and a plurality of guide rail buckles, a first guide rail groove and a second guide rail groove are provided on the guide rail, the first guide rail groove and the second guide rail groove extend in the same direction; A portion of the plurality of guide rail buckles are spaced apart at the fixed end of the top cover, and the guide rail buckles spaced apart at the fixed end of the top cover are engaged in the first guide rail groove; a portion of the plurality of guide rail buckles are spaced apart at the fixed end of the first bottom cover, and the guide rail buckles located at the fixed end of the first bottom cover are engaged in the second guide rail groove. Some of the multiple guide rail buckles are spaced apart on the fixed end of the second bottom cover, and the guide rail buckles located on the fixed end of the second bottom cover are engaged in the second guide rail groove.

14. The method for preparing a base station radome according to claim 13, characterized in that, The forming connection component includes: The guide rail is formed by extruding molten resin material through a mold and then cooling it. The resin material is injected into the injection mold under high temperature and high pressure through the injection molding process, and the guide rail buckle is formed after cooling.

15. A base station antenna, comprising a radiating element and a base station antenna radome, wherein the radiating element is disposed within the base station antenna radome, characterized in that, The base station antenna radome includes the base station antenna radome according to any one of claims 1 to 10.

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