An antenna assembly and AFU antenna

Abstract

The utility model discloses an antenna assembly and AFU antenna, antenna assembly is configured in the filter of connection, the filter includes at least one ground body, including: PCB board, feed network and at least one oscillator, PCB board is connected in ground body, and is surrounded with ground body and is formed with air passage, feed network is set up in the other side of PCB board that is away from ground body relative air passage, and is connected in PCB board, and oscillator is connected in PCB board, and can be electrically connected with feed network. The utility model can effectively solve the problem that the traditional AFU and array antenna exist higher dielectric constant because of material or structural factor, lead to unable to satisfy the requirement of 5G communication network's system end low loss.

Description

Technical Field

[0001] This utility model relates to the field of communication technology, specifically to an antenna assembly and an AFU antenna. Background Technology

[0002] Compared to traditional split antennas, antenna arrays are used. Power supply network PCB board The integrated cavity filter design of the antenna structure greatly facilitates the installation and use of the antenna, improves the operational reliability of the AFU antenna, and is conducive to the miniaturization design of the AFU.

[0003] For example, Chinese invention patent publication number CN115732921A, entitled "An Antenna Assembly and AFU Antenna," includes a cavity filter, a feed network PCB board integrally connected to the top of the cavity filter, and an antenna array mounted on the upper surface of the feed network PCB board. The antenna array includes multiple antenna subarrays arranged horizontally, each antenna subarray including multiple antenna radiating elements arranged vertically. A longitudinal isolation wall is provided between adjacent antenna subarrays, and the longitudinal isolation wall is connected to the ground of the feed network PCB board. The invention also relates to a testing method for this AFU antenna. This invention utilizes an antenna array. Power supply network PCB board The integrated cavity filter design of the antenna structure greatly facilitates the installation and use of the antenna and improves the operational reliability of the AFU antenna. By grounding the longitudinal isolation wall on the feed network PCB board, the coupling between antenna subarrays can be effectively reduced or even eliminated, significantly improving the performance of the AFU antenna.

[0004] Existing conventional AFUs and array antennas have high dielectric constants due to material or structural factors, making it difficult to meet the low-loss requirements of 5G communication networks at the system end. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose an antenna assembly and AFU antenna to solve the technical problem that the traditional AFU and array antenna have high dielectric constants due to material or structural factors, which makes it impossible to meet the low loss requirements of the system end of 5G communication networks.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In a first aspect, this utility model provides an antenna assembly configured in connection with a filter, the filter including at least one grounding electrode, characterized in that it includes: A PCB board, wherein the PCB board is connected to the grounding body and an air channel is formed between the PCB board and the grounding body; A power supply network, wherein the power supply network is disposed on the side of the PCB board opposite to the grounding electrode, and connected to the PCB board, relative to the air channel; and At least one oscillator is connected to the PCB board and is electrically connected to the power supply network.

[0007] In some embodiments, the grounding electrode has a groove relative to the PCB board, the PCB board is connected to the opening end of the groove, and together with the inner wall of the groove, forms the air channel.

[0008] In some embodiments, the antenna assembly further includes at least one support, one end of which is connected to the bottom inner wall of the groove and the other end of which is connected to the PCB board.

[0009] In some embodiments, the antenna assembly contains a plurality of supports, which are spaced apart along the length of the groove.

[0010] In some embodiments, the power supply network has at least four first electrical connection terminals, the oscillator has four second electrical connection terminals, and the four second electrical connection terminals are respectively connected to the four first electrical connection terminals.

[0011] In some embodiments, the antenna assembly contains multiple elements, which are spaced apart along the direction of the feed network and connected to the PCB board, and are electrically connected to the feed network.

[0012] In some embodiments, the antenna assembly further includes at least two separators, which are disposed along the length of the grounding body and are respectively connected to both sides of the grounding body.

[0013] In some embodiments, the two separators and the grounding body are an integral structure.

[0014] In some embodiments, the partition body has at least two through slots along its length.

[0015] Secondly, this utility model also provides an AFU antenna, including multiple antenna components as described above. The filter has multiple grounding bodies, which are spaced apart from each other and arranged in an array along the surface of the filter. The PCB board is connected to the grounding bodies and is also connected to the feed network and the multiple vibrators.

[0016] Compared with existing technologies, the beneficial effects of the antenna assembly and AFU antenna provided by this utility model include: the filter includes at least one grounding body, a PCB board is connected to the grounding body and forms an air channel between the PCB board and the grounding body, a feed network is disposed on the other side of the PCB board away from the grounding body relative to the air channel and is connected to the PCB board, and at least one vibrator is connected to the PCB board and can be electrically connected to the feed network. Compared with existing technologies, by using a PCB board to connect the feed network and at least one vibrator and realizing the electrical connection between the feed network and at least one vibrator, and by forming an air channel between the PCB board and the grounding body relative to the feed network, the PCB board and the air in the air channel together form a microstrip line dielectric layer, thus forming a low dielectric constant to reduce the loss of the microstrip line, thereby reducing the loss of the antenna feed network. This can solve the technical problem in existing technologies where the high dielectric constant of traditional AFUs and array antennas due to material or structural factors makes it impossible to meet the low-loss requirements of the system end of 5G communication networks. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an antenna assembly and an AFU antenna provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of an antenna assembly and an AFU antenna provided in one embodiment of the present invention from another perspective; Figure 3 This is a schematic diagram showing the connection between the grounding body, the separator, and the support body according to an embodiment of the present invention; Figure 4 This is a cross-sectional view showing the connection between the grounding body, PCB board, and power supply network provided in one embodiment of this utility model.

[0018] Explanation of reference numerals in the attached figures: Grounding body 100; Groove 110; Antenna assembly 200; Feed network 210; Vibrator 220; PCB board 230; Support body 240; Separator 300. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model 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 of the present utility model and are not intended to limit the present utility model.

[0020] To address the technical problem that traditional AFUs and array antennas have high dielectric constants due to material or structural factors, which prevent them from meeting the low-loss requirements of 5G communication networks, this invention provides an antenna assembly and AFU antenna. This assembly enables the connection of a feed network and at least one vibrator via a PCB board, achieving electrical connection between the feed network and the vibrator. Furthermore, by directly forming a ground plane on the filter housing, the connection structure between the ground plane and the filter is reduced. Additionally, by directly connecting the PCB board to the grounding electrode, the overall size and cost of the device are reduced, effectively minimizing impedance links.

[0021] Please see Figure 1 , Figure 2 and Figure 4 This is a schematic diagram of an antenna assembly and an AFU antenna in one embodiment of the present invention. The antenna assembly is configured on a connecting filter. The filter includes at least one ground body 100, including: a PCB board 230, a feed network 210, and at least one vibrator 220. The PCB board 230 is connected to the ground body and forms an air channel with the ground body. The feed network 210 is disposed on the other side of the PCB board 230 away from the ground body relative to the air channel and is connected to the PCB board 230. The vibrator 220 is connected to the PCB board 230 and can be electrically connected to the feed network 210.

[0022] In this device, a PCB board 230 is used to connect the feed network 210 and at least one vibrator 220, and to realize the electrical connection between the feed network 210 and at least one vibrator 220. At the same time, by forming an air channel between the PCB board 230 and the ground body relative to the feed network 210, the PCB board 230 and the air in the air channel together form a microstrip line dielectric layer, thus forming a low dielectric constant to reduce the loss of the microstrip line, thereby reducing the loss of the antenna feed network 210. This can solve the technical problem in the prior art where the traditional AFU and array antenna have a high dielectric constant due to material or structural factors, which makes it impossible to meet the low loss requirements of the system end of 5G communication network.

[0023] Furthermore, in 5G base stations, AFU indicates that radio frequency and antenna functions are integrated by AAU (Active Antenna Unit). This is a conventional setting known to those skilled in the art and will not be elaborated further here.

[0024] Furthermore, the filter here is a cavity filter that is common and readily available on the market. At least one grounding body 100 is formed on the top of the cavity filter. The grounding body 100 forms an air channel that allows air to pass through, which is used to cooperate with the power supply network 210 to form a lower dielectric constant, thereby reducing losses.

[0025] Furthermore, the antenna element 220 is the core component of the antenna. It generates electromagnetic wave radiation through alternating current, realizing the conversion between guided waves and space waves. It is the most basic unit constituting the antenna, and it has the function of guiding and amplifying electromagnetic waves, making the electromagnetic signal received by the antenna stronger. This is a conventional setting known to those skilled in the art.

[0026] In this embodiment, as Figure 2 , Figure 3 As shown, the grounding body 100 has a groove 110 opposite to the PCB board 230. The PCB board 230 is connected to the opening end of the groove 110 and forms an air channel with the inner wall of the groove 110.

[0027] By creating a groove 110 on the grounding body 100 relative to the PCB board 230, a certain air channel is formed between the power supply network 210 and the ground plane, which is used to form a lower dielectric constant, thereby reducing losses.

[0028] Furthermore, in this application, the thickness of the groove 110 is about 0.5 mm (if the groove 110 is too deep, the microstrip conductor will become wider, resulting in increased radiation of the feed conductor line itself, and there may not even be enough space to lay the feed network 210; if the groove 110 is too shallow, the loss change is too small, and the purpose of reducing loss cannot be achieved).

[0029] Furthermore, by directly connecting the PCB board 230 to the ground plane, the number of conductor sheets is reduced, which not only simplifies the structure but also results in a smaller dielectric constant, which helps reduce damage.

[0030] In one embodiment, referring to Figure 3, the antenna assembly 200 further includes at least one support 240, one end of which is connected to the bottom inner wall of the groove 110 and the other end is connected to the PCB board 230.

[0031] By providing at least one support 240 within the groove 110, support can be provided for the PCB board 230 and the power supply network 210, preventing the PCB board 230 from collapsing downwards and causing inconsistent installation heights, thus improving stability.

[0032] Furthermore, the support body 240 and the grounding body 100 are integral structures, both formed by the housing of the cavity filter.

[0033] In one embodiment, please refer to Figure 1 , Figure 2 The antenna assembly 200 has multiple supports 240, which are spaced apart along the length of the groove 110.

[0034] To provide stable support for the PCB board 230 and the power supply network 210, multiple supports 240 are spaced apart along the length of the groove 110.

[0035] Furthermore, the support 240 is strip-shaped, and in order to accommodate the shape change of the power supply network 210, the cross-sectional area of ​​the support 240 will be adaptively adjusted, which will not be elaborated here.

[0036] In this embodiment, the power supply network 210 has at least four first electrical connection terminals, the oscillator 220 has four second electrical connection terminals, and the four second electrical connection terminals are respectively connected to the four first electrical connection terminals.

[0037] The oscillator 220 and the power supply network 210 are electrically connected through the connection between four first electrical connection terminals and four second electrical connection terminals.

[0038] Furthermore, the vibrator 220 used here is a miniaturized sheet metal vibrator 220 with a cross-section developed by our company, including a radiating plate and multiple vibrating arms. The radiating plate and each vibrating arm are integrally formed as sheet metal components. The edge of the radiating plate is at least partially bent to form bent pins. The bent pins and each vibrating arm are located on the same side of the central body of the radiating plate. The height of the bent pins matches the height of the vibrating arms to ensure that both are suitable for connection with the feed network 210. The antenna radiating element and the antenna equipped with the antenna radiating element are adopted using this miniaturized sheet metal vibrator 220. By bending the edge of the radiating plate to form bent pins to feed the vibrating arms, the current path of the radiating plate is increased, which can significantly reduce the overall size and cross-sectional height of the vibrator 220. Moreover, the position of the vibrator 220 can be reliably limited, which is convenient for SMT soldering. Reference can be made here to Chinese Utility Model Patent with Publication No. CN216288941U, entitled: A Miniaturized Sheet Metal Vibrator 220 with a Cross-section.

[0039] In one embodiment, please refer to Figure 1 The antenna assembly 200 contains multiple vibrators 220, which are spaced apart along the setting direction of the feed network 210 and are all connected to the PCB board 230. All multiple vibrators 220 are electrically connected to the feed network 210.

[0040] In this application, a ground plane is provided with four vibrators 220, which are spaced apart from each other and are all connected to the PCB board 230 and can be electrically connected to the power supply network 210.

[0041] Furthermore, the vibration frequencies of different oscillators 220 are different, which will not be elaborated here.

[0042] In this embodiment, as Figures 1 to 3As shown, the antenna assembly also includes at least two separators 300, which are arranged along the length of the ground body 100 and are respectively connected to both sides of the ground body 100.

[0043] The separator 300 is connected to both sides of the grounding plate and is used to separate the PCB board 230, the power supply network 210 and the multiple oscillators 220 installed in the grounding body 100, which can effectively improve the decoupling effect of its decoupling circuit.

[0044] Furthermore, the height of the isolation strip on the upper surface of the cavity filter is about 6 to 10 mm, which serves as the sidewall of the array antenna. A rectangular groove 110 is opened on the sidewall near the radiating element. The width of the groove 110 corresponds to half a wavelength or a quarter wavelength of the operating frequency band (the sidewall can enhance the radiation performance of the array antenna, such as improving directivity and gain, reducing coupling, etc.).

[0045] In one embodiment, please refer to Figures 1 to 3 The two separators 300 and the grounding body 100 are an integral structure.

[0046] By integrating the separator 300 with the grounding body 100 into a single structure, the antenna structure can be simplified while reducing production costs.

[0047] In one embodiment, please refer to Figure 3 The partition 300 has at least two through slots along its length.

[0048] By setting spacer bars at intervals on the split body, the AFU assembly process can be simplified and product consistency can be improved.

[0049] This embodiment also provides an AFU antenna, including multiple antenna components, a filter having multiple grounding bodies, the multiple grounding bodies being spaced apart from each other along the surface of the filter and distributed in an array, a PCB board being connected to the grounding bodies, and being connected to the feed network 210 and multiple vibrators 220.

[0050] like Figure 1 , Figure 2 As shown, in this application, there are multiple grounding bodies 100, and the multiple grounding bodies 100 are distributed in an array along the surface of the filter.

[0051] Furthermore, the two adjacent grounding bodies 100 are separated by a partition, which can effectively reduce or even eliminate the coupling between antenna subarrays and significantly improve the working performance of the AFU antenna.

[0052] To better understand this utility model, the following is combined with... Figures 1 to 4 The technical solution of this utility model is described in detail below: The filter includes at least one ground body 100, a PCB board connected to the ground body 100, and an air channel formed between the PCB board and the ground body 100. A feed network 210 is disposed on the other side of the PCB board opposite to the ground body 100 and connected to the PCB board. At least one vibrator 220 is connected to the PCB board and can be electrically connected to the feed network 210. Compared with the prior art, the PCB board is used to connect the feed network 210 and at least one vibrator 220, and an electrical connection is achieved between the feed network 210 and at least one vibrator 220. At the same time, by forming an air channel between the PCB board and the ground body 100 relative to the feed network 210, the PCB board and the air in the air channel together form a microstrip line dielectric layer, thus forming a low dielectric constant to reduce the loss of the microstrip line, thereby reducing the loss of the antenna feed network 210.

[0053] Furthermore, this application creates a rectangular air groove 110 on the upper surface of the cavity filter. Multiple rectangular bosses with the same depth as the groove 110 are present inside the groove 110 to facilitate the installation and support of the PCB board 230. The bosses are offset from the feed network 210. The antenna feed network 210 is designed as a microstrip line, where the microstrip line dielectric layer is jointly formed by the PCB dielectric and the air groove 110 on the upper surface of the filter, with the metal on the upper surface of the filter serving as ground. This reduces the loss of the microstrip line by decreasing the dielectric constant of the dielectric, thereby improving the overall antenna and AFU loss.

[0054] This application, through the aforementioned structure, can solve the technical problem in the prior art where the high dielectric constant of traditional AFUs and array antennas due to material or structural factors prevents them from meeting the low-loss requirements of 5G communication networks at the system end.

[0055] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An antenna assembly configured to connect to a filter, the filter including at least one ground body, characterized in that, The antenna assembly comprises: a PCB plate connected to the grounding body and forming an air passage with the grounding body; a feed network arranged on the other side of the PCB plate away from the grounding body and connected to the PCB plate; and at least one vibrator connected to the PCB plate and electrically connected to the feed network. The grounding body is provided with a groove opposite the PCB plate, the PCB plate is connected to the opening end of the groove, and the air passage is formed between the PCB plate and the inner wall of the groove.

2. The antenna assembly of claim 1, wherein, The antenna assembly further comprises at least one support body, one end of the support body is connected to the bottom inner wall of the groove, and the other end is connected to the PCB plate.

3. The antenna assembly of claim 2, wherein, The number of support bodies in the antenna assembly is multiple, and the multiple support bodies are arranged at intervals along the length direction of the groove.

4. The antenna assembly of claim 3, wherein, The feed network has at least four first electrical connection ends, the vibrator has four second electrical connection ends, and the four second electrical connection ends are respectively connected to the four first electrical connection ends.

5. The antenna assembly of claim 1, wherein, The number of vibrators in the antenna assembly is multiple, the multiple vibrators are arranged at intervals along the arrangement direction of the feed network, and are all connected to the PCB plate, and the multiple vibrators are all electrically connected to the feed network.

6. The antenna assembly of claim 1, wherein, The antenna assembly further comprises at least two partition bodies, the two partition bodies are arranged along the length direction of the grounding body and are respectively connected to the two sides of the grounding body.

7. The antenna assembly of claim 1, wherein, The two partition bodies and the grounding body are of an integral structure.

8. The antenna assembly of claim 7, wherein, The partition body is provided with at least two through slots along the length direction thereof.

9. The antenna assembly of claim 7, wherein, The filter has multiple grounding bodies, the multiple grounding bodies are arranged at intervals and in an array on the surface of the filter, the PCB plate is connected to the grounding bodies, and is connected to the feed network and the multiple vibrators.

10. An AFU antenna, characterized by, ​

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