Lightweight lens antenna

Abstract

The utility model relates to the technical field of antennas, in particular to a lightweight lens antenna, which comprises a luneberg lens, the luneberg lens comprises multiple layers of metasurface rectangular plates and multiple layers of low-dielectric-constant rectangular plates, the multiple layers of metasurface rectangular plates are attached to the upper surfaces of the multiple layers of low-dielectric-constant rectangular plates in a one-to-one correspondence manner, and the multiple layers of low-dielectric-constant rectangular plates are attached to the lower surfaces of the multiple layers of low-dielectric-constant rectangular plates in a one-to-one correspondence manner. The multiple layers of super-surface rectangular plates and the multiple layers of low-dielectric-constant rectangular plates are alternately stacked and are gradually distributed from the middle layer to the edge layer to form a cylinder structure; according to the utility model, the network coverage effect can be improved, the modular design is adopted, the system is suitable for batch production, the assembly is convenient, and the production cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to a lightweight lens antenna. Background Art

[0002] Currently, 5G network is an important part of new infrastructure, but mobile 4G business is still developing rapidly, and the demand for 4G resources is still strong. In particular, there is a large gap in resources for newly added highways / high-speed railways and other trunk line scenarios, and the existing matching resources are difficult to meet the emerging needs. Therefore, in the reality of new investment and extremely scarce resources, how to use new technologies and new products to solve the current coverage of newly added highways / high-speed railways and other trunk line scenarios at a low cost and high efficiency, as well as the weak coverage needs of existing high-speed railway trunk line scenarios, has become an urgent problem to be solved in network planning and construction. Utility Model Content

[0003] The purpose of the utility model is to provide a lightweight lens antenna to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The utility model provides a lightweight lens antenna, including a Luneburg lens, wherein the Luneburg lens includes a multi-layer super-surface rectangular plate and a multi-layer low dielectric constant rectangular plate, wherein the multi-layer super-surface rectangular plate is bonded and arranged one by one on the upper surface of the multi-layer low dielectric constant rectangular plate, and the multi-layer super-surface rectangular plate and the multi-layer low dielectric constant rectangular plate are alternately stacked and gradually distributed from the middle layer to the edge layer to form a cylindrical structure.

[0005] In some embodiments, the lightweight lens antenna also includes a first support column and a limiting component, the first support column passes through a plurality of layers of super-surface rectangular plates and a plurality of layers of low dielectric constant rectangular plates, and the limiting component limits and fixes the two ends of the first support column.

[0006] In some embodiments, the lightweight lens antenna further includes two support frames, which are symmetrically arranged at both ends of the Luneburg lens. The support frames include a circular cavity, and the inner wall of the circular cavity abuts against the Luneburg lens.

[0007] In some embodiments, limiting feet are provided at the top and bottom of the circular cavity, one end of the limiting foot is provided on the inner wall of the circular cavity, and the other end is abutted against the outermost hypersurface rectangular plate in the Luneburg lens.

[0008] In some embodiments, the lightweight lens antenna further includes a reflector assembly, the reflector assembly includes a reflector, a feed source, and a lens support, the feed source and the lens support are arranged on the upper surface of the reflector, and the lens support and the Luneburg lens are in contact with each other;

[0009] The support frame also includes a support seat, the circular cavity is arranged at the top end of the support seat, and the support seat is arranged on the upper surface of the reflection plate.

[0010] In some embodiments, the reflector assembly further includes an isolation strip disposed around the feed source.

[0011] In some embodiments, the reflective plate assembly further includes a connecting piece, wherein the connecting piece is disposed at both ends of the reflective plate, and the support seat is detachably connected to the reflective plate via the connecting piece.

[0012] In some embodiments, the lightweight lens antenna further includes a second support column, the support frame further includes a first boss, and both ends of the second support column are respectively fixedly connected to the first bosses in the two support frames.

[0013] In some embodiments, the lightweight lens antenna further includes an antenna cover, the Luneburg lens is disposed inside the antenna cover, and the support frame further includes a second boss, which is in contact with an inner wall surface of the antenna cover.

[0014] In some embodiments, the circular cavity abuts against an end face of the Luneburg lens.

[0015] Beneficial effects of the utility model: In the embodiment provided by the utility model, the Luneburg lens formed by adopting a plurality of layers of super-surface rectangular plates and a plurality of layers of low dielectric constant rectangular plates can improve the coverage effect of the high-speed / high-speed rail network; by adopting a modular design, the structure is simple and reasonable, and the manufacturing process of super-surface rectangular plates and low dielectric constant rectangular plates stacked layer by layer is suitable for mass production, easy to assemble and low in production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the decomposition of the Luneburg lens in the example;

[0017] Figure 2 This is a schematic diagram of the Luneburg lens assembly in the example;

[0018] Figure 3 is a schematic diagram of the support frame structure in the example;

[0019] Figure 4 is a schematic diagram of a reflector assembly in an example;

[0020] Figure 5 This is a schematic diagram of the whole machine assembly in the example.

[0021] Explanation of the accompanying drawings: 100, Luneburg lens; 110, metasurface rectangular plate; 120, low dielectric constant rectangular plate; 130, first support column; 140, limit assembly; 200, support frame; 210, limit foot; 220, first boss; 230, second boss; 240, circular cavity; 250, support seat; 300, connector; 400, reflector plate assembly; 410, connector; 420, reflector; 430, feed source; 440, isolation strip; 450, lens support; 460, clamp support; 500, second support column. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the present utility model will be further described below in conjunction with the embodiments and drawings.

[0023] In the description of the present utility model, "several" means an indefinite quantity, "multiple" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0024] In the description of the present invention, the terms “comprises”, “includes” or any other variations thereof are intended to cover a non-exclusive inclusion, which may include other elements not explicitly listed in addition to the elements listed.

[0025] Currently, the most common application in the field of mobile communications is the plate antenna. The multi-frequency and multi-port plate antenna has a large design size and a complex internal structure. In particular, the multi-beam antenna design is equivalent to the splicing of several antennas. The antenna is large in size and has a large windward area. There is a certain risk of structural reliability when used outdoors for a long time. In addition, traditional plate antennas have unsatisfactory coverage of trunk scenarios such as highways / high-speed railways, and have technical defects such as coverage blind spots or weak coverage areas.

[0026] The Luneburg lens antenna is a new type of antenna that achieves electromagnetic wave convergence based on the lens principle. Compared with traditional plate antennas, it can more effectively control the beam width and coverage range. It has been widely used in trunk line scenarios such as highways / high-speed railways, and has achieved good application results.

[0027] As materials and processes mature, Luneburg lens antennas, as a new type of antenna, will play an important role in the construction of 5G networks. Luneburg lenses have natural technical advantages, but it is difficult to truly realize them, mainly due to limitations in materials and processes. More specifically, low dielectric constant rectangular plates limit the application of Luneburg lens antennas. The process determines the performance of Luneburg lens antennas, which is also the key reason why Luneburg lenses have not been able to be mass-produced.

[0028] In order to solve the problems in the background technology, the technical solution provided by the utility model adopts a modular design structure that is simple and reasonable. The manufacturing process is suitable for mass production, and it is easy to assemble and has the advantages of low production cost. Starting from the performance characteristics of the Luneburg lens antenna, the utility model gives the coverage capability of the antenna in the high-speed rail scenario, and verifies it with some pilot examples, fully demonstrating the applicability of the Luneburg lens antenna, which can effectively give play to its advantages, help operators save investment, and improve the coverage effect of high-speed / high-speed rail networks. The lightweight lens antenna provided by the utility model can effectively improve the network coverage of trunk scenarios such as highways, high-speed railways, bridges, and tunnels.

[0029] like Figure 1 and Figure 2 As shown, the utility model provides a lightweight lens antenna, including a Luneburg lens 100, wherein the Luneburg lens 100 includes a multi-layer super-surface rectangular plate 110 and a multi-layer low dielectric constant rectangular plate 120, wherein the multi-layer super-surface rectangular plate 110 is bonded one by one on the upper surface of the multi-layer low dielectric constant rectangular plate 120, and the multi-layer super-surface rectangular plate 110 and the multi-layer low dielectric constant rectangular plate 120 are alternately stacked and gradually distributed from the middle layer to the edge layer to form a cylindrical structure.

[0030] The Luneburg lens 100 is formed by stacking a supersurface rectangular plate 110 and a low dielectric constant rectangular plate 120 layer by layer, which is approximately a cylinder. The metal layer of the supersurface rectangular plate 110 is gradually distributed from the inside to the outside. It has the advantages of small size, light weight, wide bandwidth, good polarization characteristics, simple radiation unit, low loss, high overall antenna efficiency, and simple and quick installation.

[0031] In some embodiments, the lightweight lens antenna also includes a first support column 130 and a limiting component 140, wherein the first support column 130 passes through a multi-layer metasurface rectangular plate 110 and a multi-layer low dielectric constant rectangular plate 120, and the limiting component 140 limits and fixes the two ends of the first support column 130.

[0032] It should be noted that a plurality of mounting holes are arranged on the surface of the supersurface rectangular plate 110; the low dielectric constant rectangular plate 120 adopts low-density material and is designed with a flat structure, which has the advantages of light weight, easy processing, and easy assembly. A plurality of mounting holes are arranged on the surface, and the supersurface rectangular plate 110 and the low dielectric constant rectangular plate 120 are alternately stacked from the center to the outside, and the upper and lower sides are symmetrical structures. The metal layer of the supersurface rectangular plate 110 is gradually distributed from the inside to the outside; in some embodiments, the limit assembly 140 includes a plastic gasket and a cross pan head screw. After alignment and assembly, the first support column 130 is used to pass through the mounting holes set by the supersurface rectangular plate 110 and the low dielectric constant rectangular plate 120. After adding plastic gaskets at the upper and lower ends of the first support column 130, it is fixed with a cross pan head screw, and the finished product is approximately a cylinder.

[0033] like Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, the lightweight lens antenna further includes two support frames 200, and the two support frames 200 are symmetrically arranged at both ends of the Luneburg lens 100, and the support frame 200 includes a circular cavity 240, and the inner wall of the circular cavity 240 is abutted against the Luneburg lens 100.

[0034] In this embodiment, the support frame 200 serves to limit and support the Luneburg lens 100 .

[0035] In some embodiments, limiting feet 210 are provided at the top and bottom of the circular cavity 240 , one end of the limiting foot 210 is provided on the inner wall of the circular cavity 240 , and the other end is abutted against the outermost super-surface rectangular plate 110 in the Luneburg lens 100 .

[0036] Specifically, the limiting foot 210 includes two support plates arranged at intervals, and the supporting frame 200 and the supersurface rectangular plate 110 are fixed by the limiting foot 210 to prevent the supersurface rectangular plate 110 and the low dielectric constant rectangular plate 120 from rotating in the supporting frame 200. The Luneburg lens 100 provided in this embodiment has a simple assembly process, light weight, low cost, and is suitable for mass production.

[0037] In some embodiments, the lightweight lens antenna further includes a reflector assembly 400, the reflector assembly 400 includes a reflector 420, a feed source 430 and a lens support 450, the feed source 430 and the lens support 450 are arranged on the upper surface of the reflector 420, and the lens support 450 is in contact with the Luneburg lens 100;

[0038] The support frame 200 further includes a support seat 250 , the circular cavity 240 is disposed at the top end of the support seat 250 , and the support seat 250 is disposed on the upper surface of the reflective plate 420 .

[0039] In some embodiments, the feed source 430 is multiple and arranged in an array. The top of each feed source 430 corresponds to the same Luneburg lens 100. The Luneburg lens 100 is relatively fixed on the reflective plate 420 through the support frame 200 and the lens support 450 to achieve the integration of the Luneburg lens 100.

[0040] In some embodiments, the reflection plate assembly 400 further includes an isolation strip 440 , and the isolation strip 440 is disposed around the feed source 430 .

[0041] In some embodiments, the lightweight lens antenna further includes a connector 300 , and the connector 300 is disposed at both ends of the reflector 420 , and the support base 250 is detachably connected to the reflector 420 via the connector 300 .

[0042] In some embodiments, the lightweight lens antenna further includes a second support column 500 , and the support frame 200 further includes a first boss 220 , and both ends of the second support column 500 are fixedly connected to the first bosses 220 in the two support frames 200 .

[0043] In some embodiments, the lightweight lens antenna further includes an antenna cover, the Luneburg lens 100 is disposed inside the antenna cover, and the support frame 200 further includes a second boss 230, which abuts against an inner wall surface of the antenna cover.

[0044] In some embodiments, the circular cavity 240 abuts against an end surface of the Luneburg lens 100 .

[0045] Specifically, the first boss 220 is provided with a mounting hole and is fixed to both ends of the second support column 500. The second boss 230 is designed to be in an arc shape and abuts against the inner wall surface of the antenna cover (the antenna cover is not shown in the accompanying drawings), playing a certain supporting role for the Luneburg lens 100. The circular cavity 240 abuts against the end surface of the Luneburg lens 100 to play a fixing role. The left and right support frames 200 are symmetrically placed at both ends of the Luneburg ball device to play a limiting and supporting role. The support seat 250 is provided with a mounting hole, and the mounting hole on the support seat 250 is rigidly connected to the connecting piece 300. The support seat 250 is fixed to the reflector 420 through the connecting piece 300.

[0046] In the embodiment provided by the utility model, the reflector assembly 400 includes: a connector 410, a reflector 420, a feed source 430, an isolation strip 440, a lens support 450 and a clamp support 460; the connector 410 is fixed to the front bending structure of the reflector 420 for connecting the feed line; the feed source 430 is installed on the front side of the reflector 420, the isolation strip 440 is distributed around the feed source 430, the lens support 450 supports the Luneburg lens 100, and the clamp support 460 is locked on the back side of the reflector 420. The reflector assembly 400 in this embodiment has a simple structural design, a convenient and quick installation process, a stable and reliable support structure for the Luneburg lens 100, and a modular design of the lens antenna body is conducive to mass production.

[0047] The embodiments described in the embodiments of the present invention are intended to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation on the technical solutions provided by the embodiments of the present invention. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of the present invention are also applicable to similar technical problems.

[0048] It will be understood by those skilled in the art that the technical solutions shown in the drawings do not constitute a limitation on the embodiments of the present invention, and the terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0049] It should be understood that in the present utility model, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0050] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the rights of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present invention should be within the scope of the rights of the present invention.

Claims

1. A lightweight lens antenna, characterized in that: It includes a Luneburg lens, which includes a multi-layer super-surface rectangular plate and a multi-layer low dielectric constant rectangular plate. The multi-layer super-surface rectangular plate is bonded and arranged one by one on the upper surface of the multi-layer low dielectric constant rectangular plate. The multi-layer super-surface rectangular plate and the multi-layer low dielectric constant rectangular plate are alternately stacked and gradually distributed from the middle layer to the edge layer to form a cylindrical structure.

2. The lightweight lens antenna according to claim 1, characterized in that: The lightweight lens antenna also includes a first support column and a limiting component. The first support column passes through a multi-layer super-surface rectangular plate and a multi-layer low dielectric constant rectangular plate. The limiting component limits and fixes the two ends of the first support column.

3. The lightweight lens antenna according to claim 1, characterized in that: The lightweight lens antenna further comprises two support frames, which are symmetrically arranged at two ends of the Luneburg lens. The support frames comprise a circular cavity, and the inner wall of the circular cavity abuts against the Luneburg lens.

4. The lightweight lens antenna according to claim 3, characterized in that: Limiting feet are arranged on the top and the bottom of the circular cavity, one end of the limiting foot is arranged on the inner wall of the circular cavity, and the other end is abutted against the outermost super-surface rectangular plate in the Luneburg lens.

5. The lightweight lens antenna according to claim 3, characterized in that: The lightweight lens antenna further comprises a reflector assembly, wherein the reflector assembly comprises a reflector, a feed source and a lens support, wherein the feed source and the lens support are arranged on the upper surface of the reflector, and the lens support is in contact with the Luneburg lens; The support frame also includes a support seat, the circular cavity is arranged at the top end of the support seat, and the support seat is arranged on the upper surface of the reflection plate.

6. The lightweight lens antenna according to claim 5, characterized in that: The reflection plate assembly further includes an isolation strip, and the isolation strip is arranged around the feed source.

7. The lightweight lens antenna according to claim 5, characterized in that: The reflective plate assembly further comprises connecting pieces, which are arranged at two ends of the reflective plate, and the support seat is detachably connected to the reflective plate via the connecting pieces.

8. The lightweight lens antenna according to claim 5, characterized in that: The lightweight lens antenna further includes a second support column, and the support frame further includes a first boss, and both ends of the second support column are respectively fixedly connected to the first bosses in the two support frames.

9. The lightweight lens antenna according to claim 5, characterized in that: The lightweight lens antenna further includes an antenna cover, the Luneburg lens is arranged inside the antenna cover, and the support frame further includes a second boss, which is in contact with the inner wall surface of the antenna cover.

10. The lightweight lens antenna according to claim 5, characterized in that: The circular cavity abuts against the end surface of the Luneburg lens.

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