A 5G ultra-wideband dual-polarization coupled radiation unit and antenna

Abstract

The present invention discloses a 5G ultra-wideband dual-polarization coupled radiation unit and antenna. The radiation unit includes a radiator and a feed balun. The feed balun is used to support and feed the radiator. The radiator is characterized in that the radiator includes dipole arms arranged in a cross-symmetrical pattern, a parasitic unit arranged at the end of each dipole arm, and polarization diversity polymer sheets respectively arranged at polarization zero positions at both ends, wherein a decoupling component is provided between adjacent dipole arms. The present invention achieves a frequency bandwidth of 1710 to 3800 MHz by synergistically adding a decoupling component between the dipole arms, a polarization zero diversity polymer sheet, and a parasitic unit at the end of the dipole arm. This not only meets the network communication frequency bands of the existing 2G to 4G network standards, but also meets the high performance requirements of the frequency band use of the 5G network standard.

Description

Technical Field

[0001] The present invention relates to the field of antenna technology, and more specifically, to a 5G ultra-wideband dual-polarization coupled radiation unit and antenna. Background Art

[0002] On June 6, 2019, the Ministry of Industry and Information Technology officially issued four 5G (fifth-generation mobile communications) commercial licenses to China Mobile, China Unicom, China Telecom, and China Optoelectronics, which means that China has officially entered the 5G (fifth-generation mobile communications) era.

[0003] Today, 4G (fourth-generation mobile communications) networks offer a wide variety of mobile internet services. However, due to limitations in 4G speed and latency, network speeds can drop and video freezes can occur in crowded areas like subways and stadiums. Compared to 4G (fourth-generation mobile communications), 5G (fifth-generation mobile communications) boasts ultra-high speeds, ultra-low latency, and large capacity. Applications such as smart homes, smart cities, cloud offices, and industrial automation will fuel a new wave of innovative mobile internet services.

[0004] Antennas, as a carrier for 5G (fifth-generation mobile communications) network communication applications, are also evolving with the times, keeping pace with the development of communication technology. Domestic communication antennas have evolved from 2G (second-generation mobile communications) to the current 4G (fourth-generation mobile communications), from early GSM single-band narrowband antennas, to GSM dual-band, MIMO wideband antennas, and finally to the Massive MIMO antenna technology of the 5G era. 2G, 3G, and 4G cannot yet be completely replaced. Therefore, our current 5G antenna solutions must also ensure compatibility with 2G, 3G, and 4G network standards. Due to the bandwidth limitations of the existing conventional dual-polarization antenna solutions, the dual-polarization antenna units for 2G, 3G, 4G, and 5G must be designed separately during the design process, and then combined using filters. While this conventional dual-polarization antenna unit design approach effectively combines dual-polarization antenna units from multiple standards, it also has significant drawbacks, such as large size, complex structure, and high cost. Furthermore, conventional dual-polarized half-wave antenna elements are not optimized for 5G's low latency and high speeds, resulting in poor signal-to-noise ratio and interference immunity. The Internet of Everything (IoE) is a key future application scenario for 5G, and the quality of end-to-end network coverage directly impacts future user experience. The performance differences between dual-polarized antenna elements will inevitably have immeasurable consequences for operators' large-scale 5G network coverage. Summary of the Invention

[0005] Therefore, it is necessary to address the aforementioned technical issues by providing a 5G ultra-wideband dual-polarization coupled radiating element and antenna. Specifically, this 5G ultra-wideband dual-polarization coupled radiating element utilizes a synergistic combination of decoupling components between the dipole arms, a polarization nulling diversity aggregation plate, and parasitic elements at the dipole arm ends to achieve a frequency bandwidth of 1710 to 3800 MHz. This not only meets the network communication frequency bands of existing 2G to 4G network standards, but also meets the frequency band requirements of 5G (fifth-generation mobile communication) network standards. Compared to conventional dual-polarization antenna solutions on the market, which design dual-polarization antenna elements in sections and then combine them through filters, this 5G ultra-wideband dual-polarization coupled radiating element offers advantages such as compact size, ultra-wideband, high gain, strong anti-interference capabilities, low cost, simple structure, easy mass production, high data rate, and backward and upward compatibility. This solves the network performance and cost issues faced by operators who need to purchase large, costly 5G antennas with poor signal-to-noise ratio and poor anti-interference capabilities to support systems with multiple network standards. At the same time, it provides domestic mobile communication operators with high-performance multi-system 5G system antenna products, which has significant economic benefits.

[0006] To achieve the above objectives, the present invention provides a 5G ultra-wideband dual-polarization coupled radiating unit and antenna, which adopts the following technical solutions:

[0007] A 5G ultra-wideband dual-polarization coupled radiation unit includes a radiator and a feeding balun, wherein the feeding balun is used to support the radiator and feed it. The radiator includes dipole arms arranged symmetrically in a cross, a parasitic unit arranged at the end of each dipole arm, and polarization diversity aggregation plates respectively arranged at polarization zero positions at both ends, wherein a decoupling component is provided between adjacent dipole arms.

[0008] As an improvement of the 5G ultra-wideband dual-polarization coupled radiation unit provided by the present invention, the decoupling component is equidistant and staggered decoupling balance teeth.

[0009] As an improvement of the 5G ultra-wideband dual-polarization coupled radiation unit provided by the present invention, the spacing between the decoupling balance teeth is 0.5~1.0mm.

[0010] As an improvement of the 5G ultra-wideband dual-polarization coupled radiation unit provided by the present invention, the dipole arm is a right-angled teardrop-shaped dipole arm, and the decoupling component is provided on its right-angle side.

[0011] As an improvement of the 5G ultra-wideband dual-polarization coupled radiation unit provided by the present invention, the polymer sheet is a convex-shaped polymer sheet, and its narrower end is arranged close to the gap between the dipole arms.

[0012] As an improvement of the 5G ultra-wideband dual-polarization coupled radiation unit provided by the present invention, the dipole arm and the parasitic unit are coupled.

[0013] As an improvement of the 5G ultra-wideband dual-polarization coupled radiation unit provided by the present invention, the radiator is formed on a dielectric plate, the dipole arm, the parasitic unit, and the polymer sheet are formed on the front side of the dielectric plate, and the back side of the dielectric plate is also formed with 4 hollow metal rings and 2 feeding surfaces. The hollow metal rings are arranged corresponding to the dipole arms, and the feeding surfaces are connected to the corresponding dipole arms through metallized circular holes.

[0014] As an improvement of the 5G ultra-wideband dual-polarization coupled radiation unit provided by the present invention, it also includes a tuning plate arranged above the radiator.

[0015] An antenna includes a metal reflector, on which the above-mentioned 5G ultra-wideband dual-polarization coupled radiation unit is arranged.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] A 5G ultra-wideband dual-polarization coupled radiating element achieves a frequency bandwidth of 1710 to 3800 MHz through the synergistic effects of decoupling components added between the dipole arms, a polarization nulling diversity aggregation plate, and parasitic elements at the dipole arm ends. This allows it to meet the frequency band requirements of both existing 2G to 4G network standards and 5G (fifth-generation mobile communication) network standards. Compared to conventional dual-polarization antenna solutions on the market, which design dual-polarization antenna elements in segments and then combine them through filters, this radiating element offers advantages such as compact size (40% smaller than traditional approaches), ultra-wideband, high gain, strong anti-interference capabilities, low cost (approximately 35% lower than traditional approaches), simple structure, ease of mass production, high data rates, and backward and upward compatibility. This solves the network performance and cost issues faced by operators who often purchase large, costly 5G antennas with poor signal-to-noise ratio and poor anti-interference capabilities to support systems with multiple network standards. At the same time, it provides domestic mobile communication operators with high-performance multi-system 5G system antenna products with significant economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a side view of a 5G ultra-wideband dual-polarization coupled radiation unit of the present invention;

[0019] Figure 2 This is a top view of a 5G ultra-wideband dual-polarization coupled radiation unit of the present invention;

[0020] Figure 3This is a front view of a radiator in a 5G ultra-wideband dual-polarization coupled radiation unit of the present invention;

[0021] Figure 4 This is a back view of a radiator in a 5G ultra-wideband dual-polarization coupled radiation unit of the present invention;

[0022] Figure 5 for Figure 3 A magnified schematic diagram of point A1 in the middle;

[0023] Figure 6 for Figure 3 A magnified schematic diagram of A2 in the middle;

[0024] Figure 7 for Figure 3 A magnified schematic diagram of A3 in the middle;

[0025] Figure 8 for Figure 4 A magnified schematic diagram of A4 in the middle;

[0026] Figure 9 A side view of an antenna according to the present invention;

[0027] Figure 10 A plane diagram of the port voltage standing wave ratio of an antenna having a 5G ultra-wideband dual-polarization coupled radiation unit of the present invention;

[0028] Figure 11 The port isolation plan view of the antenna having the 5G ultra-wideband dual-polarization coupled radiation unit of the present invention;

[0029] Figure 12 The radiation patterns of the antenna with the 5G ultra-wideband dual-polarization coupled radiation unit of the present invention are respectively the horizontal plane pattern at 0 degrees and the vertical plane pattern at 90 degrees;

[0030] Figure 13 The table shows the measured gain and half-power beamwidth radiation performance of the antenna with the 5G ultra-wideband dual-polarization coupled radiation unit of the present invention. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0034] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0036] like Figures 1 to 8 As shown, a 5G ultra-wideband dual-polarization coupled radiating unit includes a radiator 100 and a feed balun 200. The feed balun 200 is used to support and feed the radiator 100. The radiator 100 includes dipole arms 110, parasitic elements 120, and polarization diversity polymer sheets 130 arranged symmetrically in a cross-shaped manner. Two dipole arms 110 arranged diagonally in the +45° direction form a +45° polarization component, and two dipole arms 110 arranged diagonally in the -45° direction form a -45° polarization component. A decoupling component 140 is provided between adjacent dipole arms 110. The parasitic elements 120 are provided at the end of each dipole arm 110, and the polarization diversity polymer sheets 130 are provided at the polarization nulls at both ends.

[0037] In the embodiment of the present invention, the vibrator arm 110 is a right-angled teardrop-shaped vibrator arm 110, that is, each vibrator arm 110 is composed of a circle and a right angle, and the right angles of the four vibrator arms 110 are all arranged close to the center of the radiator 100, so that the adjacent sides of every two vibrator arms 110 are right-angled sides. Specifically, in this embodiment, the decoupling component 140 is an equidistant and staggered decoupling balance tooth 141, specifically, a tooth structure is formed on the two right-angled sides of two adjacent vibrator arms 110, and the tooth structures on the two right-angled sides are staggered and arranged at equal intervals. Preferably, the inter-tooth spacing d1 of adjacent teeth of the decoupling balance tooth 141 is 0.5~1.0mm, as shown in FIG. Figure 5 shown.

[0038] It is worth noting that the tooth structure can be understood as a number of equally spaced teeth formed on a right angle, the number of teeth is 4 or more, and the shape of the teeth can be a square or other polygon. More preferably, the polygon is a regular polygon.

[0039] When the shape of the teeth is other regular polygons, the inter-tooth spacing d1 is calculated as the maximum spacing between two adjacent teeth.

[0040] It should be noted that the tooth shape, number and inter-tooth spacing of the equidistant and staggered decoupling balance teeth 141 can be appropriately adjusted according to the center frequency of the preset 5G frequency. The adjustment process is an existing adjustment technology and will not be described in detail here.

[0041] It is worth noting that the circular shape of the side of the dipole arm 110 away from the center of the radiator 100 is only one embodiment, and may also be other shapes, such as polygonal, etc., which will not be described in detail here.

[0042] In a MIMO system, antenna mutual coupling not only reduces channel isolation but also reduces the radiation efficiency of the entire system. Conventional half-wave dual-polarization radiating units are generally designed with smooth transitions between the symmetrical dipole arms 110, without any specific optimization for the mutual coupling effect between antenna units. This mutual interference between antenna units results in a poor signal-to-noise ratio, which in turn affects data throughput. The present invention uses equidistant staggered decoupling balancing technology to control current flow. This technology guides the electric field of the radiator 100, weakening and offsetting the mutual coupling currents between antenna units, suppressing the mutual coupling effect between antenna units, improving the antenna signal-to-noise ratio, and thereby increasing data throughput.

[0043] Furthermore, if Figure 3 、 6As shown, the poly sheet 130 is a convex-shaped poly sheet, with its narrower end positioned adjacent to the gap between the two dipole arms 110. Furthermore, the transition angle of the poly sheet 130 toward the dipole arm 110 is configured as an arc-shaped chamfer 131. If the transition angle were a right angle, the reflectivity of high-frequency current passing through the right angle would be higher than that of a curved angle. Excessive reflectivity can easily degrade antenna performance.

[0044] Due to the limitation of space size, the oscillator of the conventional half-wave dual-polarization radiating unit is basically staggered at 45 degrees with the oscillator of the other polarization component. In order to meet the port isolation index that needs to be considered, the polarization spacing at both ends is generally set to be relatively large. However, because the antenna performance of this setting method needs to take into account the antenna port isolation index, the beam width generates discrete energy, resulting in the energy between each frequency band not being able to be completely aggregated at the zero position. The present invention sets two polarization diversity aggregation plates 130 at the polarization zero positions at both ends through the zero-position polarization diversity technology, matching the efficiency of the above-mentioned equidistant staggered decoupling technology, so that the electromagnetic overflow discrete energy generated by the polarization at both ends passes through the two polarization diversity aggregation plates 130. Through the magnetic field separation aggregation effect of the polarization diversity aggregation plate 130, the electromagnetic overflow discrete energy that cannot be completely aggregated at the beam zero position by polarization aggregation is separated, so that the beams of the polarization at both ends are more concentrated and aggregated at the zero positions of the polarization at both ends.

[0045] It should be noted that the relative distance between the polymer sheet 130 and the dipole arm 110 can be appropriately adjusted according to the radiation efficiency of the antenna, which will not be described in detail here.

[0046] Furthermore, four parasitic units 120 are symmetrically arranged at the four corners of the center of the four dipole arms 110, and the connection between the four parasitic units 120 and the dipole arms 110 is coupling, such as Figure 7 Preferably, the parasitic unit 120 is a mushroom-shaped parasitic unit 120 .

[0047] Although the relative bandwidth of the dipole arm 110 of most conventional half-wave dual-polarization radiating units on the market is as high as 45%, it still cannot meet the existing 5G high-frequency application frequency of 3300~3800MHz. However, the present invention adds four mushroom-shaped coupling parasitic units 120 to the end of the dipole arm 110, and reasonably designs the gap d2 between the end of the dipole arm 110 and the four mushroom-shaped coupling parasitic units 120 to be 0.1~0.5mm, so that the coupling amount is controlled within the optimal mutual inductance coefficient range. After the current fluid path at the end of the dipole arm 110 passes through the four mushroom-shaped coupling parasitic units 120 for current coupling, it matches the electromagnetic guidance characteristics of the tuning plate 300 set above the dipole arm 110, achieving the effect of bandwidth amplification. The relative bandwidth ratio is further expanded to 76%, and then multiplied by the reflection of the metal reflector 400, thereby being compatible with the operating frequencies of 2G, 3G, and 4G, while meeting the high performance requirements of the 5G frequency network.

[0048] The synergistic effect of adding decoupling components 140 between the dipole arms 110 (equidistant staggered decoupling technology), polarization null diversity aggregation plates 130 (null polarization diversity technology), and parasitic elements 120 at the ends of the dipole arms 110 (edge-coupled broadband technology) allows for a frequency bandwidth of 1710 to 3800 MHz, meeting both the network communication bands of existing 2G to 4G networks and the frequency band requirements of 5G (fifth-generation mobile communications) networks. This solves the network performance and cost issues faced by operators in achieving large-scale coverage by purchasing large, costly 5G antennas with poor signal-to-noise ratio and anti-interference capabilities to support systems with multiple network standards.

[0049] The dipole arms 110 of conventional half-wave dual-polarization radiators are mostly made of die-cast metal or polytetrafluoroethylene sheets, sometimes even imported, which places significant cost pressure. To address this issue, the radiator 100 described in the present invention is formed on a double-sided dielectric plate 150. The dipole arms 110, parasitic elements 120, and polymer sheets 130 are copper-clad on the front surface of the dielectric plate 150. Four hollow metal rings 160 for current guidance and two feed surfaces 170 are also copper-clad on the back surface of the dielectric plate 150. The hollow metal rings 160 correspond to the dipole arms 110, and the feed surfaces 170 are connected to their corresponding dipole arms 110 via metal vias 171 in the metal rings. The dielectric plate 150 is a printed structure. Considering low-cost mass production, the material is pre-set to be FR4 epoxy resin, which has greater cost advantages. It can also be made of more expensive high-frequency plates such as polytetrafluoroethylene, but is not limited to this.

[0050] Furthermore, the feed balun 200 adopts a coaxial cable DC feeding mode for polarization components. Specifically, the feed balun 200 includes: ±45° feeding strips 210, 220, a balun support and a coaxial cable, wherein one end of the +45° feeding strip 210 is provided with a +45° feeding hole 211, and one end of the -45° feeding strip 220 is provided with a -45° feeding hole 221; the balun support includes a base with two cable holes (not shown in the figure), two support columns 230 provided on the base and a coaxial cable 230 provided on the coaxial cable 230. Two positioning pins (not shown in the figure) protrude from the top of the two support columns 230. The two positioning pins are respectively embedded in the socket 180 of the dipole arm 110 on the side away from the ±45° feeding holes 211 and 221 and welded to fix them. Then, the radiator 100 is inserted orthogonally at 90° to the top of the feeding balun 200; the coaxial cable passes through the cable hole, the outer conductor of the coaxial cable is welded and fixed to the cable hole, and the cable core wire passes through the ±45° feeding holes 211 and 221 and is welded to the ±45° feeding strips 210 and 220.

[0051] Furthermore, the radiating unit also includes a tuning plate 300 disposed above the radiator 100. A hollow hole 190 is provided in the non-copper-covered area of ​​the dipole arm 110 to facilitate the installation and fixation of the tuning plate 300. The tuning plate 300 is 0.1 to 0.2λ away from the radiator 100, where λ is the operating wavelength of the 5G ultra-wideband dual-polarization coupled radiating unit. It should be noted that the tuning plate 300 is not limited to a circular shape and can also be configured as other polygonal shapes.

[0052] like Figure 9 As shown, the present invention also provides an antenna, which can be defined as a small plate antenna, a micro base station antenna, or an indoor antenna according to its usage category. Specifically, the antenna includes a metal reflector 400 and the above-mentioned 5G ultra-wideband dual-polarization coupled radiating unit disposed on the reflector 400. The bottom end of the feed balun 200 is fixed to the metal reflector 400 at a 90-degree angle, so that the radiator 100 is coplanar with the front surface of the metal reflector 400. Furthermore, the lower end of the coaxial cable passes through the metal reflector 400 and is connected to the feeding device (not shown) on the back of the metal reflector 400.

[0053] Beneficial effects

[0054] The present invention provides a 5G ultra-wideband dual-polarization coupled radiating element. Through the synergistic effects of a decoupling assembly 140 added between the dipole arms 110, a polarization-nulling diversity aggregation plate 130, and a parasitic element 120 at the end of the dipole arm 110, its frequency bandwidth reaches 1710 to 3800 MHz. This not only meets the network communication frequency bands of existing 2G to 4G network standards, but also meets the high-performance requirements of the 5G (fifth-generation mobile communication) network standard. Compared to conventional dual-polarization antenna units on the market, which design dual-polarization antenna units in sections and then combine them through filters, this radiating element offers advantages such as compact size, ultra-wideband, high gain, strong anti-interference capabilities, low cost, simple structure, ease of mass production, high data transmission rate, and backward and upward compatibility. This solves the network performance and cost issues faced by operators who need to purchase large, costly 5G antennas with poor signal-to-noise ratio and poor anti-interference capabilities to support systems with multiple network standards. At the same time, it provides domestic mobile communication operators with high-performance multi-system 5G system antenna products with significant economic benefits.

[0055] After testing, Figure 10 、 Figure 11 The VSWR value of the preset frequency range of 1710MHz to 3800MHz is less than 1.5, and the port isolation is greater than 30dB. The frequency bandwidth reaches 2090MHz, achieving ultra-wideband coverage. The conventional half-wave dual-polarization radiating units currently on the market generally have a maximum bandwidth of 400MHz to 1000MHz. Figure 12 It can be seen that the half-power beam width in the horizontal and vertical planes is controlled within 75±8° from 1710 to 2700 MHz, and within 60±8° from 3000 to 3800 MHz. The half-power beam width is uniform within the frequency band, and the amplitude of different frequencies will not be large due to ultra-wideband. The antenna has good signal concentration and directional radiation characteristics. Figure 13 It can be seen from the table that the antenna gain is ≥8dBi, and the gain value fluctuation within the frequency band is uniform, achieving excellent high-performance signal concentrated directional radiation characteristics.

[0056] Obviously, the embodiments described above are only some of the embodiments of the present application, rather than all of the embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the scope of protection of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present application specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of protection of the patent of this application.

Claims

1. A 5G ultra-wideband dual-polarization coupled radiation unit, comprising a radiator and a feed balun, wherein the feed balun is used to support the radiator and feed it, characterized in that: The radiator includes dipole arms symmetrically arranged in a cross shape, a parasitic unit arranged at the end of each dipole arm, and polarization diversity polymer sheets respectively arranged at polarization zero positions at both ends, wherein a decoupling component is provided between adjacent dipole arms; Also included is a tuning plate disposed above the radiator; The parasitic unit is a mushroom-shaped parasitic unit; The vibrator arm is a right-angled teardrop-shaped vibrator arm, and the decoupling component is provided on its right-angled side; The polymer sheet is a convex-shaped polymer sheet, and a narrower end of the polymer sheet is arranged close to the gap between the vibrator arms.

2. The 5G ultra-wideband dual-polarization coupled radiation unit according to claim 1, wherein: The decoupling components are decoupling balancing teeth that are staggered at equal intervals.

3. The 5G ultra-wideband dual-polarization coupled radiation unit according to claim 2, wherein: The spacing between the decoupling balancing teeth is 0.5-1.0 mm.

4. The 5G ultra-wideband dual-polarization coupled radiation unit according to claim 2, wherein: The decoupling balancing teeth are in the shape of a regular polygon.

5. The 5G ultra-wideband dual-polarization coupled radiation unit according to claim 1, wherein: The vibrator arm and the parasitic unit are coupled.

6. The 5G ultra-wideband dual-polarization coupled radiation unit according to claim 1, wherein: The radiator is formed on the dielectric plate, the dipole arm, parasitic unit, and polymer sheet are formed on the front side of the dielectric plate, and four hollow metal rings and two feeding surfaces are formed on the back side of the dielectric plate. The hollow metal rings are arranged corresponding to the dipole arms, and the feeding surfaces are connected to the corresponding dipole arms through metallized circular holes.

7. An antenna comprising a metal reflector, characterized in that: The metal reflector is provided with a 5G ultra-wideband dual-polarization coupled radiation unit as described in any one of claims 1 to 6.

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