5G radio frequency active antenna

Abstract

An embodiment of the present disclosure provides a 5G radio frequency active antenna, comprising: an antenna substrate for mounting and supporting various components of the antenna; the array antenna module is arranged on the antenna substrate; the folding reflector is arranged on one side of the array antenna module and is used for enhancing the signal strength in a specific direction and reducing interference in other directions; the radio frequency connector is arranged on the antenna substrate and is electrically connected with the array antenna module; the adjustable support arm is connected to the lower part of the antenna substrate and is used for adjusting the overall inclination angle and direction of the antenna; wherein the folding reflector is of a multi-stage folding structure, and the multi-stage folding structures of the folding reflector are connected through flexible hinges. According to the scheme of the embodiment of the invention, the problems that the structure complexity is too high and the weight is increased when wide-angle radiation is realized due to the fact that the coverage requirements in multiple directions must be considered when the antenna array is designed can be solved.

Description

Technical Field

[0001] This application relates to the field of communication technology, specifically to a 5G radio frequency active antenna. Background Technology

[0002] 5G active radio frequency antennas are smart antennas used in 5G communication systems that can transmit and receive signals. They integrate multiple small antenna elements to form an antenna array and use electronic circuits to control the signal phase and amplitude, thereby achieving beamforming and spatial multiplexing. However, in actual design, ensuring sufficient coverage in multiple directions necessitates complex structural designs to achieve wide-angle radiation. This not only increases the structural complexity of the antenna system, making design and manufacturing more difficult, but also increases the overall weight of the antenna system, affecting its ease of installation and deployment in mobile devices and other application scenarios. Summary of the Invention

[0003] In view of this, the present disclosure provides a 5G radio frequency active antenna, which at least partially solves the problems existing in the prior art.

[0004] This application discloses a 5G radio frequency active antenna, comprising:

[0005] Antenna substrate, which is used to mount and support various components of the antenna, and also serves as a transmission path for radio frequency signals;

[0006] An array antenna module, which is mounted on the antenna substrate, is used to transmit and receive multi-directional radio frequency signals;

[0007] A folded reflector, which is disposed on one side of the array antenna module, is used to enhance the signal strength in a specific direction and reduce interference in other directions;

[0008] An RF connector is disposed on the antenna substrate and electrically connected to the array antenna module;

[0009] An adjustable support arm, connected below the antenna substrate, is used to adjust the overall tilt angle and orientation of the antenna; wherein...

[0010] The folding reflector has a multi-level folding structure, and the multi-level folding structures of the folding reflector are connected by flexible hinges.

[0011] In one specific embodiment, the antenna substrate is a multilayer composite material structure, with a lightweight carbon fiber reinforced composite material layer on top, a dielectric layer in the middle, and a metal foil layer on the bottom.

[0012] In one specific embodiment, the antenna substrate is provided with multiple through holes.

[0013] In one specific embodiment, the antenna substrate has multiple boss structures, which reduces the overall assembly complexity of the antenna and enhances structural stability.

[0014] In one specific embodiment, the array antenna module is composed of multiple small antenna units arranged in a matrix, and each small antenna unit is electrically connected to the others through a micro conductive sheet.

[0015] In one specific embodiment, the small element antenna is a planar inverted F-shaped antenna structure.

[0016] In one specific embodiment, the small-unit antenna of the planar inverted F-shaped antenna structure adopts an embedded feeding method.

[0017] In one embodiment, the surface of the folded reflector is coated with a low-reflectivity paint.

[0018] In one specific embodiment, the RF connector adopts a quick-connect interface design, and the interface is provided with a multi-layer shielding structure.

[0019] In one specific embodiment, the length of the adjustable arm is one-third of the length of the antenna substrate.

[0020] This disclosure provides a 5G active radio frequency antenna, comprising: an antenna substrate for mounting and supporting various antenna components and serving as a transmission path for radio frequency signals; an array antenna module disposed on the antenna substrate for transmitting and receiving radio frequency signals in multiple directions; a folded reflector disposed on one side of the array antenna module for enhancing signal strength in a specific direction and reducing interference in other directions; a radio frequency connector disposed on the antenna substrate and electrically connected to the array antenna module; and an adjustable support arm connected below the antenna substrate for adjusting the overall tilt angle and direction of the antenna; wherein the folded reflector is a multi-level folded structure, and the multi-level folded structures of the folded reflector are connected by flexible hinges. The solution of this disclosure can solve the problem of excessive structural complexity and increased weight when achieving wide-angle radiation because the antenna array design must consider coverage requirements in multiple directions. Attached Figure Description

[0021] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0022] Figure 1 This is a schematic diagram of the 5G radio frequency active antenna axial structure of this utility model;

[0023] Figure 2 This utility model Figure 1 Schematic diagram of the structure of the antenna substrate;

[0024] Figure 3 This utility model Figure 2 Enlarged view of a partial truncation of the antenna substrate.

[0025] In the diagram: 1. Antenna substrate; 2. Array antenna module; 3. Folded reflector; 4. RF connector; 5. Adjustable arm; 6. Through hole; 7. Boss structure; 8. Small unit antenna; 9. Miniature conductive sheet; 10. Flexible hinge Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0027] like Figure 1 and Figure 2 As shown, a 5G active RF antenna of this application includes key components such as an antenna substrate 1, an array antenna module 2, a folded reflector 3, an RF connector 4, and an adjustable support arm 5. The components are connected by fasteners or interlocking structures to form a compact and easy-to-install integrated active antenna system. This design not only achieves wide-area coverage and optimized performance but also significantly reduces equipment weight and complexity.

[0028] Antenna substrate 1 is used to mount and support various components of the antenna, and also serves as a transmission path for radio frequency signals. Located at the center of the entire antenna structure, this substrate not only provides mechanical support for other components but also forms the core path for signal conduction; therefore, its material selection must balance high conductivity and lightweight requirements. Antenna substrate 1 is composed of multi-layer circuit boards, capable of supporting complex radio frequency signal traces and ensuring signal integrity.

[0029] The array antenna module 2 is mounted on the antenna substrate 1 and is used to transmit and receive radio frequency signals in different directions. The module integrates several antenna elements and corresponding phase-shifting circuits. Through a reasonable layout design and advanced manufacturing processes, the overall size and weight of the module are reduced. The optimized beamforming algorithm of the array antenna module 2 improves communication quality and anti-interference capabilities while reducing power consumption.

[0030] The folded reflector 3 is located on one side of the array antenna module 2. Its main function is to enhance the signal strength in a specific direction, thereby expanding the effective working area in that direction. At the same time, by adjusting its shape, it effectively reduces the sidelobe level, reduces energy leakage in the non-working area, and reduces the risk of mutual interference. This folded design greatly saves physical space and reduces the overall weight without affecting the performance.

[0031] The RF connector 4 is mounted on the antenna substrate 1 and establishes an electrical connection with the array antenna module 2, thereby connecting external devices to this device for signal transmission. The RF connector 4 is a high-performance product conforming to international standards, ensuring stable and high-speed data transmission. It possesses excellent waterproof and dustproof sealing properties and good electromagnetic compatibility characteristics, meeting the requirements of harsh outdoor environments. It features quick assembly and disassembly, facilitating on-site operation without damaging the original electrical connection quality.

[0032] The adjustable support arm 5 is connected to the antenna substrate 1 and is used to change the attitude angle and orientation of the entire device, allowing users to adjust the optimal radiation direction according to actual needs to adapt to different application scenarios. The support arm itself is made of sturdy yet lightweight aluminum alloy, achieving maximum portability while ensuring sufficient mechanical strength. Combined with a flexible rotating structure, it allows users to easily and quickly complete fine-tuning and calibration tasks.

[0033] This solution employs a compact and lightweight structure combined with intelligent electronic components, which not only achieves the expected performance goals but also greatly improves the integration level. Ultimately, it simplifies the structure and reduces weight while still ensuring excellent operational performance.

[0034] In one embodiment, the antenna substrate 1 of a 5G radio frequency active antenna of this application is a multilayer composite material structure, wherein the upper layer is a lightweight carbon fiber reinforced composite material layer, the middle layer is a dielectric layer with a low dielectric constant, and the lower layer is a metal foil layer. This multilayer composite material structure design effectively reduces the overall weight of the antenna substrate 1 while significantly enhancing its rigidity and electromagnetic performance. Specifically, the carbon fiber reinforced composite material used in the upper layer has the characteristics of low density and high strength, which can effectively reduce the overall weight of the antenna and provide necessary mechanical support. The middle dielectric layer, by selecting a material with a low dielectric constant, reduces signal loss during transmission, thereby improving signal quality. In addition, the lower metal foil layer is used to realize signal reflection and conduction, further optimizing the antenna's operating performance.

[0035] The antenna substrate 1 is designed to fully consider the stringent requirements for high performance and lightweight design in 5G radio frequency communication. In practical applications, the three layers of materials are stacked sequentially to form a unified multi-layer composite structure. The selection and arrangement of each layer ensure optimal matching of different functional requirements. For example, the lightweight carbon fiber reinforced composite material, as the top layer, provides excellent mechanical properties; the dielectric layer with a low dielectric constant effectively isolates the upper and lower layers at the center, reducing the risk of mutual interference; and the metal foil layer, as the bottom layer, ensures good electrical conductivity, thereby enabling the entire antenna system to achieve high performance and stable operation.

[0036] like Figure 2 As shown, in one embodiment, the antenna substrate 1 of a 5G radio frequency active antenna of this application has multiple through holes 6. These through holes 6 are distributed in various key parts of the substrate for heat dissipation and weight reduction. Specifically, the presence of the through holes 6 ensures that heat can be dissipated quickly, avoiding antenna performance degradation due to heat accumulation, thereby improving the overall stability and operating performance of the antenna. At the same time, this design also reduces the weight of the substrate, making the entire antenna system lighter. This layout is not limited to a single specific location, but is distributed in key areas where heat dissipation needs to be enhanced and mass reduction needs to be reduced, based on thermal distribution simulation results and mechanical requirements, to achieve the best effect.

[0037] For example, in one embodiment, appropriate materials and techniques can be selected to manufacture the substrate with through holes 6. First, through holes 6 of appropriate size are drilled at critical heat accumulation areas of the substrate, ensuring their size and spacing meet design requirements. Next, efficient heat conduction paths are arranged around these critical areas, such as by filling or connecting them with materials of high thermal conductivity, to enhance heat conduction from internal heat-generating components to the external environment. Furthermore, through precise calculations and simulation analysis, the optimal layout of the through holes 6 is determined to ensure an optimal balance between heat dissipation and weight reduction, thereby guaranteeing the efficient and stable operation of the 5G RF active antenna under various operating conditions.

[0038] Continue to refer to Figure 2 In one embodiment, a 5G radio frequency active antenna of this application is characterized by having multiple boss structures 7 on the antenna substrate 1. The main function of these boss structures 7 is to fix and support other key components of the antenna system, effectively reducing assembly complexity and enhancing overall structural stability. The antenna system design considers the assembly requirements of different components, and the introduction of the boss structures 7 significantly simplifies the positioning and installation of each component, reducing the requirements for precision machining processes. Through the rational planning and arrangement of multiple locations, the antenna can maintain efficient and stable operation in various working environments.

[0039] The boss structures 7 are distributed in different areas of the antenna substrate 1, providing a stable mounting base for connectors and other functional modules. Specifically, the substrate has several bosses of different sizes and shapes to accommodate different components, such as feeder connectors, power amplifier components, and filtering devices. By setting the boss structures 7 in these locations, not only can the precise alignment of various components be ensured, but also sufficient mechanical support can be provided to resist the influence of environmental factors, such as vibration or extreme temperature changes.

[0040] In one embodiment, the boss structure 7 can be manufactured using injection molding to ensure integral molding with the substrate. This simplifies the production process and improves manufacturing efficiency. Specifically, a mold that meets assembly requirements is first designed, and then high-quality engineering plastics are used for integral molding. The boss portion fits tightly with the substrate without seams or gaps, thus achieving excellent overall strength. Subsequently, key components can be directly installed onto the corresponding boss positions according to the designed interface specifications. The entire process is simple and highly consistent.

[0041] In one embodiment, such as Figure 3 As shown, the array antenna module 2 of a 5G radio frequency active antenna of this application is composed of multiple small element antennas 8 arranged in a matrix. These small element antennas 8 are electrically connected to each other through micro-conductive sheets 9. Unlike traditional connector connection methods, the micro-conductive sheets 9 reduce the number of connectors, effectively reducing the overall weight. This design makes the antenna system more compact and improves integration. The small element antennas 8 adopt a planar inverted-F antenna (PIFA) structure, which is characterized by its small size and light weight. The planar inverted-F antenna supports multi-band operation and performs well in various application scenarios under the 5G band.

[0042] The small-element antenna 8 not only boasts a simple structure but also possesses excellent frequency characteristics, adapting to the requirements of various communication environments. To further reduce antenna size and complexity, the planar inverted-F antenna employs an embedded feeding method, minimizing reliance on external feed lines. This embedded feeding design makes the overall antenna structure more compact and simplified, while enhancing electromagnetic compatibility. Furthermore, this feeding method helps improve signal transmission quality and reduces the possibility of interference. These technical features work together to provide reliable assurance for the application of high-performance 5G RF active antennas.

[0043] For example, in a specific implementation, several micrometer-level conductive lines are first arranged on a substrate to form a micro-conductive sheet 9. Then, the corresponding small antenna elements 8 are fixed to these micro-conductive sheets 9 by welding or other methods to complete the array construction. The small antenna elements 8 are electrically connected to each other by micro-circuits embedded in the micro-conductive sheets 9. Simultaneously, in the antenna manufacturing stage, planar inverted F-shaped small antenna elements 8 are fabricated according to pre-set design drawings and specifications, and precisely positioned to ensure they are embedded and connected to the internal power lines. Thus, after the entire manufacturing and assembly process is completed, a 5G RF active antenna assembly with optimized performance can be obtained.

[0044] In one embodiment, the folding reflector 3 of a 5G radio frequency active antenna of this application employs a multi-stage folding structure, which allows for flexible adjustment of the folding angle between each stage. By optimizing signal gain in specific directions and reducing interference in other directions, the overall performance of the antenna is improved. The multi-stage folding structure allows each stage to be folded up when not in use, significantly reducing the antenna's size and facilitating transportation and installation. When unfolded, the reflector's angle can be adjusted according to the actual application scenario, further optimizing its functionality. Because the angle between each folding level can be precisely controlled, the reflector can provide a more stable directional coverage effect within the operating frequency range.

[0045] Furthermore, the reflector consists of multiple continuous panels connected by hinges, enabling smooth angle adjustment. The panels are made of a lightweight, high-strength alloy, ensuring structural stability and durability while reducing the overall weight of the antenna. The panels are tightly and smoothly joined, preventing any additional signal loss or distortion. During installation, the reflector can be fixed to the front of the antenna, coordinating with the feed system and other critical components to ensure good electromagnetic compatibility.

[0046] For example, each panel of the reflector is equipped with an independent fine-tuning mechanism, allowing operators to precisely control the angle of each panel manually or remotely, ensuring the signal coverage area and intensity meet expectations. Specifically, these fine-tuning mechanisms incorporate built-in electronic sensors and drive components, enabling continuously adjustable dynamic control within a set range. This not only effectively enhances signal gain in a specified direction but also allows for timely adjustments to achieve the optimal operating state as needed in practical applications.

[0047] In one embodiment, a 5G radio frequency active antenna of this application is characterized by the use of lightweight aluminum alloy for the folded reflector 3. This design makes the entire antenna structure lighter, thereby helping to reduce installation and transportation costs. To ensure the purity and efficiency of signal transmission, the surface of the folded reflector 3 is coated with a low-reflectivity coating, which effectively absorbs rather than reflects electromagnetic waves, reducing secondary reflection interference. By optimizing the material selection and coating treatment of the folded reflector 3, not only is weight reduction achieved, but the overall performance of the antenna is further improved.

[0048] In this design, the high rigidity and good conductivity of lightweight aluminum alloy enable the folded reflector 3 to maintain sufficient mechanical strength without affecting signal transmission and reception performance. Furthermore, the low-reflectivity coating possesses stable physicochemical properties, allowing it to operate continuously under various environmental conditions and effectively reducing the impact of the external environment on signal transmission quality. For example, in outdoor installation environments, this coating provides effective protection even in the face of extreme temperature variations or moisture corrosion.

[0049] Specifically, the folded reflector 3 is located in the rear end region of the antenna system and is closely adjacent to the main radiating element. Its overall structure combines planar unfolding with multi-segment adjustable bending, significantly reducing the overall size and weight of the device without sacrificing antenna gain. In practical applications, aluminum alloy sheets conforming to specific dimensions and shapes can be pressed using a specific mold. Then, a specialized spraying process is used to evenly apply a low-reflectivity coating to the reflector surface, and finally, it is assembled into the RF active antenna to ensure optimal performance.

[0050] In one embodiment, the multi-level folded structure of the folded reflector 3 of a 5G radio frequency active antenna of this application is connected by a flexible hinge 10. Specifically, the flexible hinge 10 enables smooth folding and unfolding while maintaining structural stability, significantly improving the adjustability of the antenna. The folded reflector 3 of the antenna is located in a specific area of ​​the antenna system and is connected to the antenna body through a multi-level folded structure, allowing its shape to be adjusted according to actual needs. This design not only enables flexible use of the antenna in different scenarios but also ensures the functional integrity of the reflector under various operating conditions. The flexible hinge 10 is a key component, made of high-performance materials, ensuring good physical and mechanical properties in complex electromagnetic environments.

[0051] Furthermore, the flexible hinge 10 employs a nested installation method when connecting the various folding structures, ensuring sufficient strength and durability at the connection points. This installation method avoids the stress concentration problems that may occur with traditional rigid connections, thereby improving the overall stability and reliability of the antenna. Through its carefully designed joints, the flexible hinge 10 can support multi-directional angle changes while ensuring that each angle change meets the expected technical requirements. For example, in certain applications, the flexible hinge 10 can allow the folded reflector 3 to rotate freely within a range of 0 to 180 degrees while maintaining the required attitude accuracy.

[0052] In one embodiment, the RF connector 4 of a 5G RF active antenna of this application adopts a quick-connect interface design to meet the requirements of efficient and reliable operation. This design significantly improves the convenience of installation and maintenance, enabling field engineers to quickly assemble and disassemble the antenna equipment, saving a significant amount of time and manpower. The quick-connect interface structure not only ensures low-loss performance but also possesses excellent mechanical strength and environmental adaptability, guaranteeing the stability and reliability of signal transmission under various harsh conditions.

[0053] To further enhance signal quality and anti-interference performance, the interface of RF connector 4 features a multi-layer shielding structure. Each layer of shielding is meticulously designed to optimize its physical and electrical properties, effectively isolating external electromagnetic interference and thus improving the system's operational stability and efficiency. For example, the outer layer can be made of a highly conductive metal material, forming a robust first line of defense; the middle layer uses absorbing material to absorb and attenuate residual electromagnetic waves; and the inner layer employs a fine mesh structure to further suppress leakage signals.

[0054] Specifically, RF connector 4 is installed in a crucial location between the antenna unit module and the external transmission line. A multi-layered shielding structure is nested sequentially from the outside inwards within the interface, ensuring a tight fit between each layer for optimal RF signal protection. The quick-connect interface achieves a perfect balance between rapid insertion and secure fixation through a clever locking mechanism. The entire design, from material selection to manufacturing process, strictly adheres to industry standards and specifications.

[0055] In one embodiment, the adjustable arm 5 of a 5G active RF antenna of this application is set to one-third the length of the antenna substrate 1. This dimensional ratio not only considers the requirements of structural strength and stability but also fully considers the center of gravity balance issue under different operating environments. This design allows for reasonable optimization of the weight distribution of the entire system when the arm angle is adjusted, avoiding uneven load problems caused by adjustments. To ensure the overall stable operation of the system and guarantee the performance stability of the antenna during operation, the arm design needs to strictly adhere to this length ratio in engineering practice. This design concept is applicable to various application scenarios, including but not limited to indoor coverage, outdoor macro base stations, and micro base stations in the construction of various types of 5G network infrastructure. By rationally planning the relationship between the arm length and the antenna substrate 1, the applicability of this ratio under different operating conditions is ensured.

[0056] For example, in practical implementation, the overall geometry and size of the antenna substrate 1 are first determined, and then the specific dimensions of the support arm are determined based on its dimensions, ensuring that the final length of the support arm is one-third of the length of the antenna substrate 1. The support arm is installed at the end of the antenna substrate 1 and connected to it via a hinge or similar rotating joint to support multi-dimensional angle adjustment requirements. Specifically, this connection method allows the support arm to flexibly change its angle while maintaining stability, while ensuring that the center of gravity of the entire antenna system remains within a predetermined safe range, preventing the risk of imbalance due to tilting. This design method effectively achieves dynamic balance of the center of gravity during antenna angle adjustment.

[0057] In actual operation, when this device is in use, the 5G RF active antenna achieves efficient and stable wireless signal transmission, reception, and processing through the highly coordinated work of various key components. The entire system operation process unfolds from the antenna substrate 1, which not only serves as a physical support structure to ensure the stable installation of other components, but also acts as a key medium for RF signal transmission, establishing a reliable information channel between various modules.

[0058] First, the array antenna module 2 begins operation upon receiving system control commands. Serving as both the signal transmission and reception port, this module is optimized for a specific operating frequency band (e.g., 3.5 GHz), effectively converting electrical energy into electromagnetic waves and transmitting them in all directions, or capturing data waves floating in the air and converting them into electrical signals. Furthermore, through the spatial arrangement of multiple small antenna elements and the application of electronic phase control technology, it can cover a large spatial area and achieve multi-directional signal propagation, thereby reducing blind spots and improving communication quality.

[0059] This is followed by the intervention of the folded reflector 3. Located on one side of the array antenna module 2, it is specifically designed to enhance the signal gain in the target direction and reduce noise interference in unwanted areas. This enhances the main lobe signal, increasing the effective signal power received by the remote user terminal, while suppressing side lobes and other unwanted directions, reducing cross-interference effects, and ensuring signal purity and directional selectivity.

[0060] Furthermore, to ensure seamless integration with other network devices and high-efficiency RF interface performance, the RF connector 4 mounted on the antenna substrate 1 plays a crucial role. One end of the RF connector 4 connects to the internal circuitry, while the other end connects to an external communication base station or other terminal, enabling the input or output of RF signals from the outside. This ensures that the entire active antenna system can be smoothly integrated into larger-scale communication networks. In addition, waterproof and corrosion-resistant measures are incorporated into the design, increasing reliability for long-term outdoor use.

[0061] The adjustable arm 5 is located below the active antenna and provides mechanical adjustment. Operators can change the tilt angle or rotation direction of the entire device by rotating the corresponding parts, thereby adapting to the varying coverage angle requirements of different application scenarios. For example, it can be adjusted to provide precise coverage in small areas between high-rise buildings in urban areas or to provide wide-area broadcasting in suburban plains. This flexible design greatly enhances the versatility and flexibility of the product's applications, and makes on-site installation and maintenance more convenient for engineers. Due to the use of lightweight materials, the entire mechanism also has a low weight, facilitating transportation and assembly, and significantly reducing deployment costs and manpower burden.

[0062] The specific embodiments described above further illustrate the purpose, technical solutions, and beneficial effects of the embodiments of this disclosure. It should be understood that the above descriptions are merely specific embodiments of the embodiments of this disclosure and are not intended to limit the scope of protection of the embodiments of this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this disclosure should be included within the scope of protection of the embodiments of this disclosure.

Claims

1. A 5G radio frequency active antenna, characterized in that, include: Antenna substrate (1), which is used to mount and support various components of the antenna, and at the same time serves as a transmission path for radio frequency signals; An array antenna module (2) is disposed on the antenna substrate (1) and is used to transmit and receive multi-directional radio frequency signals; A folded reflector (3) is disposed on one side of the array antenna module (2) to enhance the signal strength in a specific direction and reduce interference in other directions; Radio frequency connector (4) is disposed on the antenna substrate (1) and electrically connected to the array antenna module (2); An adjustable support arm (5) is connected below the antenna substrate (1) and is used to adjust the overall tilt angle and direction of the antenna. in The folding reflector (3) is a multi-level folding structure, and the multi-level folding structures of the folding reflector (3) are connected by flexible hinges (10).

2. A 5G radio frequency active antenna according to claim 1, characterized in that: The antenna substrate (1) is a multilayer composite material structure, with a lightweight carbon fiber reinforced composite material layer on top, a dielectric layer in the middle, and a metal foil layer on the bottom.

3. A 5G radio frequency active antenna according to claim 1, characterized in that: The antenna substrate (1) is provided with multiple through holes (6).

4. A 5G radio frequency active antenna according to claim 1, characterized in that: The antenna substrate (1) has multiple boss structures (7), which reduces the overall assembly complexity of the antenna and enhances structural stability.

5. A 5G radio frequency active antenna according to claim 1, characterized in that: The array antenna module (2) is composed of multiple small unit antennas (8) arranged in a matrix, and each small unit antenna (8) is electrically connected to each other through a micro conductive sheet (9).

6. A 5G radio frequency active antenna according to claim 5, characterized in that: The small unit antenna (8) is a planar inverted F-shaped antenna structure.

7. A 5G radio frequency active antenna according to claim 6, characterized in that: The small-unit antenna of the planar inverted F-shaped antenna structure adopts an embedded feeding method.

8. A 5G radio frequency active antenna according to claim 1, characterized in that: The surface of the folded reflector (3) is coated with a low-reflectivity paint.

9. A 5G radio frequency active antenna according to claim 1, characterized in that: The radio frequency connector (4) adopts a quick-connect interface design, and the interface is equipped with a multi-layer shielding structure.

10. A 5G radio frequency active antenna according to claim 1, characterized in that: The length of the adjustable arm (5) is one-third of the length of the antenna substrate (1).

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