A vibrator structure and a base station antenna

Abstract

The application discloses a vibrator structure and a base station antenna, and the vibrator structure comprises a reflecting plate and two groups of vibrator bodies; each vibrator body comprises a feed line circuit board, a radiation sheet and a buckling part, the feed line circuit boards of the two groups are installed on the same side of the reflecting plate and are arranged in a cross manner, the radiation sheet is a metal sheet, and the buckling part is arranged on the radiation sheet and can buckle the radiation sheet on the feed line circuit board of the same group. The scheme adopts the form of the circuit board feed line as the dipole antenna, couples the electric signal to the radiation sheet, effectively utilizes the advantage that the frequency band of the dipole antenna is wide. Meanwhile, the radiation sheet can be formed by stamping a relatively thin metal sheet, the weight of the vibrator is greatly reduced, the intermodulation index is good, a mold is not needed to be opened, the cost is reduced, and the main advantages of the sheet metal stamping process, the PCB feed line and the dipole antenna are integrated.

Description

Technical Field

[0001] This invention relates to the field of base station antenna technology, specifically to a vibrator structure and a base station antenna. Background Technology

[0002] Existing narrow-pitch broadband antennas generally use dipole elements to broaden the frequency band.

[0003] Publication No. CN204947071U discloses a dipole antenna vibrator. Its radiating frame can achieve the required electrical performance and matching value variation effect of the dipole antenna vibrator through the matching unit set in the coupling arm. This can reduce the assembly complexity of the dipole antenna vibrator and effectively reduce its assembly cost, while improving antenna stability and combining practical progress with better industrial economic benefits.

[0004] However, conventional dipole oscillators are generally available in two forms: die-casting and PCB (printed circuit board). Die-cast dipole oscillators are formed from a single piece of metal, with fewer solder joints and relatively better intermodulation performance, but their weight is inevitably too large. The industry generally replaces the metal with plastic and then electroplats the metal, achieving performance consistent with pure metal die-cast oscillators while significantly reducing antenna weight. However, plastic structures require molds, resulting in higher costs, and once the molds are made, they cannot be modified, hindering antenna version upgrades. PCB dipole oscillators, on the other hand, offer good performance at a lower cost, but require multiple solder joints for fixation and connection, making it difficult to meet intermodulation requirements. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose an oscillator structure that solves the technical problem that existing dipole oscillators are difficult to balance in terms of weight reduction, cost saving, and good intermodulation performance.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides an oscillator structure, comprising:

[0008] Reflector; and

[0009] Two sets of oscillator bodies, each of which includes a feeder circuit board, a radiating plate, and a fastening part. The feeder circuit boards of the two sets are installed on the same side of the reflector and are arranged in a cross pattern. The radiating plate is a metal sheet. The fastening part is provided on the radiating plate and can fasten the radiating plate to the feeder circuit board of the same set.

[0010] In some embodiments, the fastening part includes a connecting plate and a fastening plate, one end of the connecting plate is connected to the radiating sheet, and the fastening plate is installed on the connecting plate and spaced apart from the radiating sheet to form a fastening groove;

[0011] The feeder circuit board is secured in the locking slot of the same group.

[0012] In some embodiments, there are two connecting plates, which are spaced apart. There are also two fastening plates, which are respectively installed on the two connecting plates, with each fastening plate located on the side of the connecting plate closer to the other connecting plate.

[0013] In some embodiments, the radiating plate includes a radiating body and a mounting plate, wherein the radiating body and the mounting plate are connected at an angle;

[0014] The connecting plate is connected to the mounting piece, and the fastening plate is spaced apart from the mounting piece, forming the fastening groove with the mounting piece.

[0015] In some embodiments, the radiating sheet further includes a plurality of extension sheets, which are mounted on the periphery of the radiating body and spaced apart circumferentially along the radiating body, and are located on the same side of the radiating body as the mounting sheet.

[0016] In some embodiments, the radiating sheet is formed by stamping and bending to form the radiating body, the mounting piece, the connecting plate and the fastening plate, and the radiating body has notches corresponding to the connecting plate and the fastening plate.

[0017] In some embodiments, the radiating sheet includes two radiating units, and each group has two fastening parts. The two fastening parts in the same group are respectively located on the two radiating units, and can fasten the two radiating units to the feeder circuit board in the same group at intervals.

[0018] The two groups of radiating units are arranged alternately along the circumference of the two feeder circuit boards.

[0019] In some embodiments, one of the two feeder circuit boards is provided with a slot into which the other feeder circuit board extends, and the other feeder circuit board is provided with a clearance slot that communicates with the slot.

[0020] In some embodiments, each of the feeder circuit boards extends toward the reflector and is provided with a plug plate, and the reflector is provided with a slot for inserting the plug plate.

[0021] Secondly, the present invention also provides a base station antenna, which includes the vibrator structure described in any of the above claims.

[0022] Compared with existing technologies, the vibrator structure provided by this invention allows for simple assembly: the radiating plate is fastened to the feeder circuit board of the same group via a fastening part, and then the two feeder circuit boards are arranged crosswise on the reflector and welded together, reducing solder joints and thus reducing the assembly process of unnecessary fasteners. Furthermore, by using a circuit board feeder as a dipole antenna, the electrical signal is coupled to the radiating plate, effectively utilizing the wide frequency band advantage of dipole antennas. Simultaneously, the radiating plate can be formed by stamping a thin metal sheet, greatly reducing the weight of the vibrator and providing good intermodulation performance. Moreover, it eliminates the need for mold opening, reducing costs and integrating the main advantages of sheet metal stamping, PCB feeders, and dipole antennas. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the oscillator structure provided in an embodiment of the present invention;

[0024] Figure 2 yes Figure 1 Exploded view of the intermediate oscillator structure;

[0025] Figure 3 yes Figure 2 A schematic diagram of a set of oscillator bodies;

[0026] Figure 4 yes Figure 2 A schematic diagram of another set of oscillator bodies;

[0027] Figure 5 yes Figure 4 Exploded view of the oscillator body;

[0028] Figure 6 yes Figure 1 Another exploded view of the oscillator structure;

[0029] Figure 7 yes Figure 6 A schematic diagram of the oscillator structure from another angle;

[0030] Figure 8 yes Figure 1 Top view of the two sets of radiating plates in the middle;

[0031] Figure 9 yes Figure 5 A schematic diagram of the medium-sized radiation plate.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Reflector; 1a. Slot; 2. Vibrator body; 21. Feeder circuit board; 21a. Slot; 21b. Clearance slot; 211. Connector board; 22. Radiation plate; 22a. Notch; 221. Radiation body; 222. Mounting plate; 223. Extension plate; 224. Radiation unit; 23. Fastening part; 231. Connecting plate; 232. Fastening plate; 232a. Fastening groove. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0035] To address the technical challenge of simultaneously achieving weight reduction, cost savings, and good intermodulation performance in existing dipole oscillators, this invention provides an oscillator structure that reduces oscillator weight, achieves good intermodulation performance, eliminates the need for mold making, reduces costs, and integrates the main advantages of sheet metal stamping, PCB feed lines, and dipole antennas.

[0036] It should be noted that the vibrator structure described in this invention is used in, but not limited to, base station antennas. For ease of explanation, this invention will only use the application of the vibrator structure in base station antennas as an example. The principle of the vibrator structure applied to other types of devices is essentially the same as that applied to base station antennas, and will not be described in detail here.

[0037] Please see Figures 1 to 5 , Figures 1 to 5 This is a schematic diagram of the oscillator structure in one embodiment of the present invention. The oscillator structure includes a reflector plate 1 and two sets of oscillator bodies 2. Each oscillator body 2 includes a feeder circuit board 21, a radiating plate 22 and a fastening part 23. The two sets of feeder circuit boards 21 are installed on the same side of the reflector plate 1 and are arranged in a cross pattern. The radiating plate 22 is a metal sheet. The fastening part 23 is provided on the radiating plate 22 and can fasten the radiating plate 22 to the feeder circuit board 21 of the same set.

[0038] The vibrator structure provided by this invention, during assembly, involves fastening the radiating plate 22 to the feeder circuit board 21 of the same group via the fastening part 23. Then, the two feeder circuit boards 21 are arranged crosswise on the reflector plate 1 and welded together, reducing solder joints and thus minimizing the assembly process of unnecessary fasteners. Furthermore, by using a circuit board feeder as a dipole antenna, the electrical signal is coupled to the radiating plate 22, effectively utilizing the wide frequency band advantage of dipole antennas. Simultaneously, the radiating plate 22 can be formed by stamping a thin metal sheet, greatly reducing the weight of the vibrator, while maintaining good intermodulation performance. Moreover, it eliminates the need for mold making, reducing costs, and integrates the main advantages of sheet metal stamping, PCB feeders, and dipole antennas.

[0039] It should be noted that the specific structure of the fastening part 23 is not limited, as long as it can fasten the radiating sheet 22 onto the feeder circuit board 21. In one embodiment, the fastening part 23 is configured as a snap-fit, and a corresponding slot for the snap-fit ​​is provided on the feeder circuit board 21. In another embodiment, the fastening part 23 is configured as a slot on the radiating sheet 22, and a snap-fit ​​is provided on the feeder circuit board 21.

[0040] In another embodiment, please refer to Figure 5 The fastening part 23 includes a connecting plate 231 and a fastening plate 232. One end of the connecting plate 231 is connected to the radiating sheet 22. The fastening plate 232 is installed on the connecting plate 231 and is spaced apart from the radiating sheet 22 to form a fastening groove 232a. The feeder circuit board 21 is snapped into the fastening groove 232a in the same group.

[0041] In this embodiment, the fastening part 23 is configured as a connecting plate 231 and a fastening plate 232, and a fastening groove 232a is formed between the fastening plate 232 and the radiating sheet 22, so that the feeder circuit board 21 is snapped into the fastening groove 232a, thereby achieving stable installation of the radiating sheet 22 on the feeder circuit board 21. It should be noted that in this solution, the radiating sheet 22, the connecting plate 231, and the fastening plate 232 are integrally die-cast.

[0042] In one embodiment, there are two connecting plates 231, which are spaced apart. There are also two fastening plates 232, which are respectively installed on the two connecting plates 231. Each fastening plate 232 is located on the side of the connecting plate 231 that is closer to the other connecting plate 231.

[0043] In this embodiment, two sets of connecting plates 231 and fastening plates 232 are arranged at intervals, so that the feeder circuit board 21 is snapped into the two sets of fastening slots 232a, further improving the installation stability of the radiating sheet 22 on the feeder circuit board 21. It should be noted that in one embodiment, more sets of connecting plates 231 and fastening plates 232 can be provided, which can be increased or decreased according to specific needs.

[0044] In one embodiment, please refer to Figures 4 to 7 The radiating plate 22 includes a radiating body 221 and a mounting plate 222. The radiating body 221 and the mounting plate 222 are connected at an angle. A connecting plate 231 is connected to the mounting plate 222. A fastening plate 232 is spaced apart from the mounting plate 222 and surrounds the mounting plate 222 to form a fastening groove 232a.

[0045] In this embodiment, the feeder circuit board 21 is attached between the fastening plate 232 and the mounting piece 222. On the one hand, the mounting piece 222 can stably abut against the feeder circuit board 21, increasing the contact area; on the other hand, the radiating body 221 can be covered on one side of the feeder circuit board 21 to ensure radiation capability.

[0046] In one embodiment, the radiating sheet 22 further includes a plurality of extension sheets 223, which are installed on the periphery of the radiating body 221 and are arranged at intervals along the circumference of the radiating body 221, and are located on the same side of the radiating body 221 as the mounting sheet 222.

[0047] In this embodiment, multiple extension plates 223 are also arranged at intervals around the periphery of the radiating body 221 to further improve the coupling capability of the radiating plate 22 for electrical signals. It should be noted that the specific number of extension plates 223 is not limited. Specifically, in this scheme, three extension plates 223 are provided on each radiating unit 224.

[0048] In one embodiment, please refer to Figure 8 The radiating sheet 22 is formed by stamping and bending to form a radiating body 221, a mounting piece 222, a connecting plate 231 and a fastening plate 232. The radiating body 221 has a notch 22a corresponding to the connecting plate 231 and the fastening plate 232.

[0049] In this embodiment, the radiating sheet 22 is integrally stamped, which facilitates production and minimizes its weight. Simultaneously, the notch 22a allows observation of whether the radiating sheet 22 is properly installed on the feeder circuit board 21, improving assembly convenience. Furthermore, the notch 22a can also alter the antenna's radiation characteristics, affecting its radiation performance.

[0050] In one embodiment, please refer to Figure 9 The radiating sheet 22 includes two radiating units 224. Each group has two fastening parts 23. The two fastening parts 23 of the same group are respectively provided on the two radiating units 224 and can fasten the two radiating units 224 to the feeder circuit board 21 of the same group at intervals. The two groups of radiating units 224 are arranged alternately along the circumference of the two feeder circuit boards 21.

[0051] In this embodiment, each radiating element 22 is configured as two radiating units 224, and the two sets of radiating units 224 are arranged alternately along the circumference of the two feeder circuit boards 21 to make the signal transmission more uniform. At the same time, a fastening part 23 is provided on each radiating unit 224 to ensure that the radiating unit 224 is stably installed on the feeder circuit board 21.

[0052] In one embodiment, one of the two feeder circuit boards 21 is provided with a slot 21a into which the other feeder circuit board 21 extends, and the other feeder circuit board 21 is provided with a clearance slot 21b that communicates with the slot 21a.

[0053] In this embodiment, a slot 21a is provided on one feeder circuit board 21, and an avoidance slot 21b is provided on the other feeder circuit board 21, so that the two feeder circuit boards 21 are arranged alternately, and the end of the feeder circuit board 21 away from the reflector 1 can be flush, which improves the structural compactness and makes assembly relatively convenient.

[0054] In one embodiment, each feeder circuit board 21 extends toward the reflector 1 and is provided with a plug plate 211, and the reflector 1 is provided with a slot 1a for inserting the plug plate 211.

[0055] In this embodiment, the feeder circuit board 21 is inserted into the slot 1a of the reflector plate 1 via a connector plate 211 to achieve positioning of the feeder circuit board 21 and the reflector plate 1 during assembly. Then, the connector plate 211 of the feeder circuit board 21 is soldered to the reflector plate 1. It should be noted that each feeder circuit board 21 has two connector plates 211 spaced apart, corresponding to four slots 1a on the reflector plate 1. Furthermore, the reflector plate 1 can also be made by die-casting a metal sheet. In this embodiment, the reflector plate 1 includes a base plate and a surrounding plate. The surrounding plate is installed on the side of the base plate where the vibrator body 2 is located, and a clearance opening is provided corresponding to the vibrator body.

[0056] Furthermore, the present invention also provides a base station antenna, which includes the vibrator structure described in any of the above embodiments. It should be noted that the detailed structure of the vibrator structure of the base station antenna can be referred to the embodiments of the above vibrator structure, and will not be repeated here. Since the above vibrator structure is used in the base station antenna of the present invention, the embodiments of the base station antenna of the present invention include all the technical solutions of all the embodiments of the above vibrator structure, and the achieved technical effects are also completely the same, and will not be repeated here.

[0057] To better understand this invention, the following is combined with... Figures 1 to 9 The technical solution of the present invention will be described in detail below:

[0058] The vibrator structure consists of four radiating elements 224 manufactured using sheet metal stamping, two feeder circuit boards 21, and a reflector 1. Specifically, the feeder circuit boards 21 have no metal ground, only wiring. Each radiating element 224 has a bend for fixing, that is, each radiating element 224 has a fastening groove 232a formed by a connecting plate 231 and a fastening plate 232. After the feeder circuit boards 21 are inserted into the two radiating elements 22, they are cross-stacked together to form two polarizations, so that the vibrator integrates the main advantages of sheet metal stamping, PCB feed lines, and dipole antennas.

[0059] Specifically, the dipole antenna adopts a PCB feed line to couple the electrical signal to the radiating plate 22, effectively utilizing the wide frequency band advantage of the dipole antenna; the metal structure of the vibrator except for the feed line is formed by stamping thin metal sheets, which greatly reduces the weight of the vibrator; when stamping the metal sheet of the radiating unit 224, a small bend is designed at an appropriate position to hold the feed line circuit board 21 and simultaneously insert the reflector plate 1 for welding, reducing the assembly process of unnecessary fasteners.

[0060] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An oscillator structure, characterized in that, include: Reflector; and Two sets of oscillator bodies, each of which includes a feeder circuit board, a radiating plate, and a fastening part. The feeder circuit boards of the two sets are installed on the same side of the reflector and are arranged in a cross pattern. The radiating plate is a metal sheet. The fastening part is provided on the radiating plate and can fasten the radiating plate to the feeder circuit board of the same set. The fastening part includes a connecting plate and a fastening plate. One end of the connecting plate is connected to the radiating sheet. The fastening plate is installed on the connecting plate and is spaced apart from the radiating sheet to form a fastening groove. The feeder circuit board is secured in the same group of fastening slots; The radiating plate includes a radiating body and a mounting plate, wherein the radiating body and the mounting plate are connected at an angle. The connecting plate is connected to the mounting piece, and the fastening plate is spaced apart from the mounting piece and surrounds the mounting piece to form the fastening groove; The radiating sheet is formed by stamping and bending to form the radiating body, the mounting piece, the connecting plate and the fastening plate. The radiating body has notches corresponding to the connecting plate and the fastening plate.

2. The oscillator structure according to claim 1, characterized in that, Two connecting plates are provided, which are spaced apart. Two fastening plates are provided, which are respectively installed on the two connecting plates. Each fastening plate is located on the side of the connecting plate closer to the other connecting plate.

3. The oscillator structure according to claim 1, characterized in that, The radiating sheet also includes a plurality of extension sheets, which are installed around the periphery of the radiating body and are spaced apart circumferentially along the radiating body, and are located on the same side of the radiating body as the mounting sheet.

4. The oscillator structure according to claim 1, characterized in that, The radiating sheet includes two radiating units, and each group has two fastening parts. The two fastening parts in the same group are respectively located on the two radiating units, and can fasten the two radiating units to the feeder circuit board in the same group at intervals. The two groups of radiating units are arranged alternately along the circumference of the two feeder circuit boards.

5. The oscillator structure according to claim 1, characterized in that, One of the two feeder circuit boards is provided with a slot into which the other feeder circuit board extends, and the other feeder circuit board is provided with a clearance slot that communicates with the slot.

6. The oscillator structure according to claim 1, characterized in that, Each of the feeder circuit boards extends toward the reflector and is provided with a plug plate, and the reflector is provided with a slot for inserting the plug plate.

7. A base station antenna, characterized in that, Including the oscillator structure as described in any one of claims 1-6.

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