Lightweight base station antenna

Abstract

The invention provides a lightweight base station antenna. The lightweight base station antenna comprises a reflecting plate, a dielectric substrate, a plurality of radiation oscillators and a plurality of balun substrates, the reflecting plate comprises a plurality of first parts and second parts which are fixedly connected, and the first parts and the second parts are alternately arranged; one surface of the dielectric substrate is fixedly provided with radiation oscillators arranged in an array, and the other surface of the dielectric substrate is fixedly connected with the balun substrate; each radiation oscillator comprises a first branch and a second branch; the first branches and the second branches are connected to form a circular area, and the adjacent second branches are arranged at intervals, so that the dielectric substrate is divided into a plurality of coupling areas; and each balun substrate is connected with the reflecting plate and the dielectric substrate so as to supply power to each radiation oscillator. According to the invention, the reflecting plate formed by splicing is adopted to provide a base for the installation of the dielectric substrate, and the surface of the dielectric substrate is locally slotted to form the circular area to optimize the overall weight of the dielectric substrate, so that the design requirement of overall light weight of the base station antenna is met.

Description

Technical Field

[0001] The present invention belongs to the technical field of base station antennas, and in particular relates to a lightweight base station antenna. Background Art

[0002] At present, traditional base station antennas have the following defects: 1. Heavy weight: In the traditional base station antenna structure, the metal reflector (such as aluminum alloy) accounts for more than 60% of the total weight of the antenna, which greatly increases the tower load. 2. Limited frequency band: The metal cavity structure in the traditional base station antenna causes significant signal loss in the high-frequency band (such as millimeter wave), making it difficult to achieve ultra-wideband coverage. 3. The assembly of traditional base station antennas is complex: the independent installation of multiple components inside it leads to high maintenance costs, and it is difficult to adapt to the needs of rapid deployment. Although the current new base station antenna optimizes the overall component installation structure by using mixed ink printing to prepare the antenna vibrator, it still does not solve the problem of low lightweightness of the overall structure of the base station antenna. Summary of the Invention

[0003] In order to solve the problem described in the background art that the current novel base station antenna, although it optimizes the overall component installation structure by using mixed ink printing to prepare the antenna oscillator, still fails to solve the problem of low lightweight degree of the overall structure of the base station antenna, the present invention proposes the following technical solutions:

[0004] A lightweight base station antenna comprises: a reflector, a dielectric substrate, multiple radiating elements, and multiple balun substrates; the reflector comprises multiple first and second portions fixedly connected, the first and second portions being arranged alternately; one surface of the dielectric substrate is fixedly provided with an array of radiating elements, and the other surface of the dielectric substrate is fixedly connected to the balun substrate; each radiating element comprises: a first branch and a second branch; the first branch and the second branch are connected to form a circular area, and adjacent second branches are arranged at intervals, thereby dividing the dielectric substrate into multiple coupling areas; each balun substrate is respectively connected to the reflector and the dielectric substrate to supply power to each radiating element.

[0005] Wherein, a plurality of guide holes are provided on the surface of the dielectric substrate, and each of the guide holes is located in one of the coupling regions.

[0006] Furthermore, a first feed line and a second feed line are respectively provided on the balun substrate; when the balun substrate is connected to the dielectric substrate, the first feed line and the second feed line are respectively electrically connected to the second branch.

[0007] Furthermore, each of the circular areas is coaxial with the corresponding guide hole.

[0008] Furthermore, the narrow surface of the first portion in the length direction is fixedly connected to the narrow surface of the second portion in the length direction, and the width of the first portion is greater than the width of the second portion.

[0009] Furthermore, the line width of the first branch is smaller than the line width of the second branch.

[0010] Furthermore, the dielectric constant of the first portion is smaller than the dielectric constant of the second portion.

[0011] Furthermore, each of the balun substrates is connected to the first part.

[0012] Beneficial effect: The present invention provides a base for the installation of a dielectric substrate by using a spliced reflector plate, and then locally grooves the surface of the dielectric substrate to form a circular area to optimize the overall weight of the dielectric substrate, thereby achieving the overall lightweight design requirements of the base station antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of a lightweight base station antenna according to an embodiment of the present invention, wherein the reflector is omitted;

[0014] Figure 2 FIG. 4 is a schematic structural diagram of a dielectric substrate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solutions and advantages of this application more clear, the present invention will be described in further detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] It should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0017] Figure 1 2 is a schematic structural diagram of a lightweight base station antenna according to an embodiment of the present invention, wherein the reflector is omitted. Figure 2 Schematic diagram of the structure of a reflector according to an embodiment of the present invention.

[0018] Reference Figure 1 According to an embodiment of the present invention, a lightweight base station antenna comprises: a reflector 1, a dielectric substrate 2, a plurality of radiation oscillators 3 and a balun substrate 4. Figure 2The reflector 1 includes a plurality of first parts 11 and second parts 12 that are fixedly connected. The first parts 11 and the second parts 12 are arranged alternately to form a plate-shaped whole. An array of radiating oscillators 3 are fixed on one wide side of the dielectric substrate 2, and the other wide side of the dielectric substrate 2 is plugged and fixed to the balun substrate 4. Each radiating oscillator 3 includes a first branch 31 and a second branch 32 that are fixedly connected. The first branch 31 and the second branch 32 form a circular area 5. Adjacent second branches 32 are spaced apart, thereby separating one of the wide sides of the dielectric substrate 2 to form multiple coupling areas. The balun substrate 4 vertically connects the reflector 1 and the dielectric substrate 2 to provide power to each radiating oscillator 3.

[0019] Specifically, the surface of the dielectric substrate 2 is provided with a plurality of guide holes 21. The circular area 5 formed by each first branch 31 and the corresponding second branch 32 matches a corresponding guide hole 21. Each circular area 5 is located on the outer ring of the corresponding guide hole 21, and each guide hole 21 is coaxial with the circular area 5. The line width of the first branch 31 is smaller than the line width of the second branch 32, and the first branch 31 has a curvature. Furthermore, the surface of the dielectric substrate 2 is provided with a slot 22 for mounting the balun substrate 4. After the second branches 32 separate the surface of the dielectric substrate 2, the coupling gap formed between the second branches 32 surrounds the slot 22, and the slot 22 is parallel to one of the coupling gaps.

[0020] Furthermore, a first feed line 41 and a second feed line 42 connected to the feed source are provided on the balun substrate 4. When the balun substrate 4 is inserted into the slot 22, the first feed line 41 and the second feed line 42 are respectively connected to the corresponding second branch 32 by welding to form a conductive structure.

[0021] Continue to refer to Figure 2 Furthermore, the materials used for the first part 11 and the second part 12 are different. The dielectric constant of the first part 11 is smaller than that of the second part 12, and each dielectric substrate 2 is fixed to the surface of the first part 11 by screws or other connectors. The narrow surface of the first part 11 in the length direction and the narrow surface of the second part 12 in the length direction are alternately spliced together by fixed connection methods such as gluing or welding to form a complete plate-like structure, wherein the width of each first part 11 is greater than the width of each second part 12. Preferably, in this embodiment, the first part 11 is a plate made of aluminum alloy, and the second part 12 is a plate made of PTFE (polytetrafluoroethylene material). In other embodiments, the second part 12 is made of a lightweight material with a higher dielectric constant, and the first part 11 is made of a lightweight material with high conductivity, such as carbon fiber composite materials, conductive polymers, etc.

[0022] In summary, the present invention uses a spliced reflector to provide a base for the installation of a dielectric substrate, and then locally grooves the surface of the dielectric substrate to form circular areas to optimize the overall weight of the dielectric substrate, thereby achieving the overall lightweight design requirements of the base station antenna.

[0023] While the foregoing describes specific embodiments of the invention, other embodiments are within the scope of the following claims.

[0024] Throughout this specification, the terms "exemplary," "example," and the like are used to mean "serving as an example, instance, or illustration" and do not imply "preferred" or "advantageous" over other embodiments. The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques can be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described embodiments.

[0025] The above describes in detail the optional implementation methods of the embodiments of the present invention in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation methods. Within the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the scope of protection of the embodiments of the present invention.

[0026] The foregoing description of this specification is provided to enable any person skilled in the art to implement or use the present disclosure. Various modifications to this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but is intended to be consistent with the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lightweight base station antenna, characterized in that: include: A reflector (1), a dielectric substrate (2), a plurality of radiation oscillators (3) and a plurality of balun substrates (4); the reflector (1) comprises a plurality of first parts (11) and second parts (12) that are fixedly connected, and the first parts (11) and the second parts (12) are arranged alternately; one side of the dielectric substrate (2) is fixedly provided with radiation oscillators (3) arranged in an array, and the other side of the dielectric substrate (2) is fixedly connected to the balun substrate (4); each radiation oscillator (3) comprises a first branch (31) and a second branch (32); the first branch (31) and the second branch (32) are connected to form a circular area (5), and adjacent second branches (32) are arranged at intervals, thereby separating the dielectric substrate (2) into a plurality of coupling areas; each balun substrate (4) is respectively connected to the reflector (1) and the dielectric substrate (2) to supply power to each radiation oscillator (3).

2. A lightweight base station antenna according to claim 1, characterized in that: A plurality of guide holes (21) are provided on the surface of the dielectric substrate (2), and each guide hole (21) is located in one of the coupling areas.

3. A lightweight base station antenna according to claim 2, characterized in that: A first feed line (41) and a second feed line (42) are respectively provided on the balun substrate (4); when the balun substrate (4) is connected to the dielectric substrate (2), the first feed line (41) and the second feed line (42) are respectively electrically connected to the second branch (32).

4. A lightweight base station antenna according to claim 3, characterized in that: Each of the circular areas (5) is coaxial with the corresponding guide hole (21).

5. The lightweight base station antenna according to claim 3, characterized in that: The narrow surface of the first part (11) in the length direction is fixedly connected to the narrow surface of the second part (12) in the length direction, and the width of the first part (11) is greater than the width of the second part (12).

6. The lightweight base station antenna according to claim 4, characterized in that: The line width of the first branch (31) is smaller than the line width of the second branch (32).

7. The lightweight base station antenna according to claim 5, characterized in that: The dielectric constant of the first portion (11) is smaller than the dielectric constant of the second portion (12).

8. The lightweight base station antenna according to claim 7, characterized in that: Each of the balun substrates (4) is connected to the first part (11).

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