Radiating unit and antenna

Abstract

The invention discloses a radiation unit and an antenna, and relates to the technical field of antennae, the radiation unit comprises a base and four dipoles arranged diagonally; a raised platform is arranged above the base, and the raised platform is used for supporting a high-frequency radiation unit; the four dipoles arranged diagonally surround the base, each dipole comprises two radiation arms and two balun arms, the balun arms are used for supporting the radiation arms, and a metal wall is arranged between the balun arms of every two adjacent dipoles; wherein the tail ends of the radiation arms of every two adjacent dipoles are communicated through a first structural member, each radiation arm comprises a square frame body, a first panel and a folding panel, and the folding panels are respectively connected with the outer long edge and the short edge close to the tail end in the square frame body; and the first panel is respectively connected with the inner long edge of the square frame body and the folding panel. According to the invention, the debugging cost can be effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to a radiation unit and an antenna. Background Art

[0002] With the continuous advancement of antenna technology, ultra-wideband, multi-band, and miniaturization have gradually become important development trends for antennas. Nesting high-frequency and low-frequency units is a key technology for achieving ultra-wideband, multi-band, and miniaturized antennas. The radiating element is the core unit of a base station antenna, transmitting and receiving electromagnetic waves. It is the decisive component for the proper functioning of a base station antenna, and the quality of its design directly determines the radiation performance of the base station antenna.

[0003] When antenna elements are assembled into an array, performance testing and debugging are performed after assembly to improve production efficiency. However, during mass production, some antenna elements inevitably have processing deviations, which increases debugging costs.

[0004] Therefore, there is an urgent need to design a radiation unit that can effectively reduce the debugging cost. Summary of the Invention

[0005] The main purpose of the embodiments of the present application is to solve at least one of the technical problems existing in the prior art and to propose a radiation unit and an antenna that can effectively reduce the debugging cost.

[0006] To achieve the above-mentioned objectives, in a first aspect, an embodiment of the present invention proposes a radiation unit, comprising: a base and four diagonally arranged dipoles; a raised platform is provided above the base, and the raised platform is used to support the high-frequency radiation unit; the four diagonally arranged dipoles are arranged around the base, and the dipoles include two radiation arms and two balun arms, and the balun arms are used to support the radiation arms, and a metal wall is provided between the balun arms of every two adjacent dipoles; wherein the ends of the radiation arms of every two adjacent dipoles are connected through a first structural member, and the radiation arm includes a square frame, a first panel and a folding panel, and the folding panel is respectively connected to the outer long side and the short side near the end of the square frame, and the first panel is respectively connected to the inner long side of the square frame and the folding panel. In some embodiments, a filtering branch is further provided on each balun arm, and the filtering branch is parallel to the upper edge of the metal wall.

[0007] In some embodiments, the first structural member includes a second panel, a third panel, a positioning plate and four first clips, the third panel is vertically connected to the outer long side of the second panel, the positioning plate is connected to the second panel and the third panel respectively, two of the first clips are arranged on the outer long side of the second panel, and the other two first clips are arranged on the inner long side of the second panel.

[0008] In some embodiments, four first parasitic units are further included, and first accommodating slots are provided in the first structural member, and the first parasitic units are snapped into the first accommodating slots.

[0009] In some embodiments, four second parasitic units are further included, and the second parasitic units are arranged on the two balun arms of each dipole through a second structural member.

[0010] In some embodiments, the second structural member includes a fourth panel and a plurality of second clips, the plurality of second clips being arranged on the fourth panel, the second clips being used to be clipped onto the two balun arms of each dipole, a second accommodating groove being provided on the outer side of the fourth panel, and the second parasitic unit being clipped into the second accommodating groove.

[0011] In some embodiments, a groove is provided in the middle of one balun arm in each dipole, the groove being used to accommodate the coaxial cable, and a welding area is provided in the other balun arm, the inner conductor of the coaxial cable being connected to the welding area.

[0012] In some embodiments, the two balun arms in each dipole are tilted 45 degrees on the base.

[0013] In some embodiments, a hollow area is provided between the metal wall and every two adjacent radiation arms of the dipoles.

[0014] In a second aspect, an embodiment of the present invention provides an antenna, comprising a radiation unit as described in any one of the embodiments of the first aspect.

[0015] A radiation unit and an antenna provided by an embodiment of the present invention have at least the following beneficial effects: four diagonally arranged dipoles form a dual-polarization bowl-shaped radiation unit with a positive and negative 45-degree polarization, wherein the ends of the radiation arms of every two adjacent dipoles are connected through a first structural member. When the antenna vibrates, the first structural member improves the strength of the radiation arm to avoid deformation of the radiation arm, thereby improving signal quality; the radiation arm includes a square frame, a first panel and a folding panel. On the one hand, the square frame is formed by the edges of two paths of different electrical lengths, one long and one short. Each electrical path in the frame corresponds to the working frequency of the radiation unit. A frequency point within the frequency range, and there is a square hole in the middle of the frame. The design of the square hole can not only match the impedance, but also expand the frequency range. On the other hand, the folding panel is respectively connected to the outer long side and the short side near the end of the square frame. Compared with the solution of extending the point coupling structure downward at the connection end point of the long side and the short side of the square frame, the surface coupling structure of the folding panel can increase the effective radiation distance and make the impedance change smoother. It can not only accurately and detailedly control the resonance characteristics of the antenna, effectively expand the operating frequency range of the antenna, but also increase the error capacity, thereby achieving the effect of reducing debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation to the technical solution of the present invention.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic structural diagram of a radiation unit provided by the present invention at a first angle; Figure 2 This is a schematic structural diagram of a radiation unit provided by the present invention at a second angle; Figure 3 This is a schematic structural diagram of a radiation unit provided by the present invention at a third angle; Figure 4 It is a structural schematic diagram of a first structural member and a second structural member in a radiation unit provided by the present invention; Figure 5 This is a layout diagram of a coaxial cable on a balun arm in a radiation unit provided by the present invention; Figure 6 This is an S parameter diagram of two ports of a radiation unit provided by the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0019] It should be noted that the terms "first", "second", etc. in the specification, claims and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0021] When antenna elements are assembled into an array, performance testing and debugging are performed after assembly to improve production efficiency. However, during mass production, some antenna elements inevitably have processing deviations, which increases debugging costs.

[0022] Based on this, an embodiment of the present invention provides a radiation unit and an antenna, which can effectively reduce debugging costs.

[0023] The embodiments of the present invention are further described below with reference to the accompanying drawings.

[0024] First, refer to Figure 1-5 The embodiment of the present invention proposes a radiation unit, including: a base 100 and four diagonally arranged dipoles; a raised platform 110 is provided above the base 100, and the raised platform 110 is used to support the high-frequency radiation unit; the four diagonally arranged dipoles are arranged around the base 100, and the dipoles include two radiation arms 210 and two balun arms 220, and the balun arms 220 are used to support the radiation arms 210, and a metal wall 300 is provided between the balun arms 220 of each two adjacent dipoles; wherein, the ends of the radiation arms 210 of each two adjacent dipoles are connected through a first structural member 400, and the radiation arm 210 includes a square frame 211, a first panel 212 and a folding panel 213, the folding panel 213 is respectively connected to the outer long side 11 and the short side 12 near the end of the square frame 211, and the first panel 212 is respectively connected to the inner long side 13 of the square frame 211 and the folding panel 213. It should be noted that in traditional technology, the radiation arm 210 is in the shape of a square panel, and most of the current will act on the shortest length position of the radiation arm 210, resulting in poor impedance matching effect. However, the present application uses a square frame 211 to form the radiation arm 210, and the square hole in the middle can not only match the impedance, but also expand the frequency range of the radiation unit.

[0025] It should be noted that, referring to Figure 3The first panel 212 is respectively connected to the inner long side 13 of the square frame 211 and the folding panel 213. Specifically, the first panel 212 is connected to the inner long side 13 of the square frame 211 and extends downward to be connected to the folding panel 213. When the antenna vibrates, the first panel 212 can further improve the strength of the radiation arm 210 and prevent the radiation arm 210 from being deformed, thereby improving the signal quality.

[0026] It should be noted that, referring to Figure 2 A metal wall 300 is provided between each two adjacent dipole balun arms 220 , and the metal wall 300 can be used to adjust the impedance matching of the radiation unit within the working frequency band.

[0027] Preferably, refer to Figure 3 A protrusion 14 is provided in the radiation arm 210 of each dipole near the balun arm 220 , which is beneficial for adjusting impedance matching.

[0028] In some embodiments, the base 100 is connected to the four diagonally disposed dipoles and the metal wall 300 respectively, and the base 100, the four diagonally disposed dipoles and the metal wall 300 are integrally die-cast.

[0029] In some embodiments, the two balun arms 220 in each dipole are both tilted 45 degrees on the base 100 .

[0030] It can be understood that, on the one hand, the linear tilt design makes the mechanical structure of the balun arm 220 simpler and more rigid, which can reduce performance deviations caused by deformation or vibration; on the other hand, the symmetrical 45-degree tilt helps to achieve balanced feeding, reduce common-mode current, and improve the cross-polarization ratio and front-to-back ratio of the antenna.

[0031] In some embodiments, reference Figure 2 A filter branch 500 is further provided on each balun arm 220 , and the filter branch 500 is parallel to the upper edge of the metal wall 300 .

[0032] It should be noted that the current existing sheet metal nested antennas can only solve the high-low frequency coupling problem by designing high-frequency reflective plates, additionally raising the nested high-frequency unit or increasing the aperture of the low-frequency unit to ensure that the indicators of each frequency band do not deteriorate, which not only increases the production cost but also increases the difficulty of debugging; based on this, the present application uses the microstrip circuit principle to set a branch as a filtering branch 500 on each balun arm 220. Through the coupling between the filtering branch 500 and the balun arm 220, the current scattered by the embedded high-frequency radiation unit to the bowl-shaped radiation unit can be suppressed to reduce the high-low frequency coupling, thereby improving the S parameter convergence and directional pattern indicators of the radiation unit.

[0033] In some embodiments, a hollow region is provided between the metal wall 300 and the radiation arms 210 of every two adjacent dipoles.

[0034] It can be understood that the setting of the hollow area reduces the obstruction of the high-frequency radiation unit, so that the electromagnetic waves radiated by the high-frequency radiation unit can be radiated along the original path, thereby further reducing the high- and low-frequency coupling of the high-frequency radiation unit, and further improving the S parameter convergence and directional pattern indicators of the radiation unit.

[0035] In some embodiments, reference Figure 2 as well as Figure 4 The first structural member 400 includes a second panel 410, a third panel 420, a positioning plate 430 and four first clips 440. The third panel 420 is vertically connected to the outer long side of the second panel 410. The positioning plate 430 is connected to the second panel 410 and the third panel 420 respectively. Two first clips 440 are arranged on the outer long side of the second panel 410, and the other two first clips 440 are arranged on the inner long side of the second panel 410.

[0036] It should be noted that when the first structural member 400 is used to connect the ends of the radiating arms 210 of each two adjacent dipoles, the second panel 410 in the first structural member 400 covers the top of the square frame 211; the third panel 420 covers the front of the partially folded panel 213 connected to the outer long side 11 in the square frame 211; the positioning plate 430 is snapped into the gap between the ends of the radiating arms 210 of each two adjacent dipoles. During assembly, the connection can be completed by simply aligning the positioning plate 430 with the gap and pressing down, which is conducive to improving assembly efficiency; the two first clips 440 are snapped into the outer sides of the outer long sides 11 of the square frames 211 of the two adjacent dipoles, and the other two first clips 440 are snapped into the inner sides of the outer long sides 11 of the square frames 211 of the two adjacent dipoles.

[0037] Preferably, the positioning plate 430 is arranged in the middle of the second panel 410 and the third panel 420 to ensure that when the positioning plate 430 is snapped into the gap between the ends of the radiating arms 210 of each two adjacent dipoles, sufficient distance can be reserved at both ends of the second panel 410 so that the first clip 440 arranged on the second panel 410 can be snapped into the outer long sides 11 of the square frames 211 of the two adjacent dipoles respectively.

[0038] Preferably, a Japanese-shaped opening is provided on the second panel 410, which is beneficial to reducing the overall weight of the radiation unit, lowering production costs and facilitating subsequent processing.

[0039] Preferably, a barb is provided at the end of the first clamping member 440. When the first structural member 400 is used to connect the ends of the radiating arms 210 of each two adjacent dipoles, the positioning plate 430 is aligned with the gap and pressed downward. The barb at the end of the first clamping member 440 is buckled with the outer long side 11 of the square frame 211 of the two adjacent dipoles. Under the coordinated action of the first clamping member 440 and the positioning plate 430, the installation efficiency of the first structural member 400 is effectively improved.

[0040] In some embodiments, reference Figure 4 , further comprising four first parasitic units 600 , a first receiving groove 450 is provided in the first structural member 400 , and the first parasitic units 600 are snapped into the first receiving groove 450 .

[0041] Preferably, the first parasitic unit 600 is a hexagonal structure, and correspondingly, the first receiving groove 450 is also a hexagonal structure.

[0042] It should be noted that when the first structural member 400 is used to connect the ends of the radiating arms 210 of each two adjacent dipoles, the first parasitic unit 600 is correspondingly disposed at the ends of the two adjacent radiating arms 210, thereby extending the radiation path. Because the length of a radiating arm 210 is much less than half the wavelength of the operating frequency band, the ends of the radiating arms 210 of two adjacent dipoles can be enhanced by coupling via the hexagonal parasitic unit, allowing the two adjacent radiating arms 210 to be approximately formed into a single radiating arm 210. In some embodiments, reference Figure 4 A first receiving groove 450 is provided on the outer surface of the third panel 420 , and the first parasitic unit 600 is snapped into the first receiving groove 450 .

[0043] It can be understood that by adjusting the distance between the first parasitic unit 600 and the ends of the radiating arms 210 of every two adjacent dipoles, the impedance matching can be effectively controlled and the performance of the radiating unit can be improved.

[0044] Furthermore, if the distance between the first parasitic unit 600 and the ends of the radiating arms 210 of each two adjacent dipoles is to be adjusted, it can be achieved by replacing the first structural member 400 with a different model so that the distance between the third panel 420 in the first structural member 400 and the ends of the radiating arms 210 of the two adjacent dipoles is changed. This simplifies the operation and reduces the debugging cost.

[0045] In some embodiments, reference Figure 4 , further comprising four second parasitic units 700 , which are arranged on the two balun arms 220 of each dipole through a second structural member 800 .

[0046] It is understandable that during debugging, the second structural member 800 for fixing the second parasitic unit 700 can slide along the two balun arms 220 of each dipole to find the best coupling point and reduce debugging costs.

[0047] In some embodiments, reference Figure 4 The second structural member 800 includes a fourth panel 810 and a plurality of second clips 820. The plurality of second clips 820 are arranged on the fourth panel 810. The second clips 820 are used to be clipped onto the two balun arms 220 of each dipole. A second accommodating groove 830 is provided on the outer side surface of the fourth panel 810. The second parasitic unit 700 is clipped into the second accommodating groove 830.

[0048] Preferably, the second parasitic unit 700 is a quadrilateral structure, and accordingly, the second receiving groove 830 is also configured to be a quadrilateral structure.

[0049] Preferably, a plurality of openings are provided on the fourth panel 810, which is beneficial to reducing the overall weight of the radiation unit, lowering production costs and facilitating subsequent processing.

[0050] It should be noted that, referring to Figure 4 The second structural member 800 also includes a positioning member 840, which is arranged in the middle of the fourth panel 810. When the second structural member 800 is arranged on the two balun arms 220 of each dipole, the positioning member 840 is clamped in the gap between the two balun arms 220. Under the action of the positioning member 840, during assembly, it is only necessary to align the positioning member 840 with the gap between the two balun arms 220 and press down to complete the connection, which is conducive to improving assembly efficiency.

[0051] Preferably, a barb is provided at the end of the second clamping member 820. When the second structural member 800 is arranged on the two balun arms 220 of each dipole, the positioning member 840 on the fourth panel 810 is aligned with the gap between the two balun arms 220 and pressed downward. The barb at the end of the second clamping member 820 is buckled with the outer sides of the two balun arms 220. Under the coordinated action of the second clamping member 820 and the positioning member 840, the installation efficiency of the second structural member 800 is effectively improved.

[0052] It is understandable that the second parasitic unit 700 is snapped into the second receiving groove 830 , and by adjusting the distance between the second parasitic unit 700 and the two balun arms 220 , the impedance matching can be effectively controlled to improve the performance of the radiation unit.

[0053] Furthermore, if the distance between the second parasitic unit 700 and the two balun arms 220 is to be adjusted, it can be achieved by replacing a second structural member 800 of a different model so that the distance between the fourth panel 810 in the second structural member 800 and the two balun arms 220 changes. This is easy to operate and reduces debugging costs.

[0054] In some embodiments, reference Figure 2 A filter branch 500 is also provided on each balun arm 220, and the filter branch 500 is parallel to the upper edge of the metal wall 300. It also includes four second parasitic units 700. The second parasitic units 700 are provided on the two balun arms 220 of each dipole through the second structural member 800. The second structural member 800 includes a fourth panel 810 and a plurality of second clips 820. The plurality of second clips 820 are provided on the fourth panel 810. The second clips 820 are used to be clipped onto the two balun arms 220 of each dipole. A second accommodating groove 830 is provided on the outer side of the fourth panel 810, and the second parasitic unit 700 is clipped into the second accommodating groove 830.

[0055] Preferably, there are four second clips 820 , and the four second clips 820 are evenly arranged on the four corners of the fourth panel 810 .

[0056] It should be noted that the second structural component 800 is arranged on the two balun arms 220 of each dipole, and the filter branch 500 is clamped under the two second clamping components 820 located at the upper end of the fourth panel 810. On the one hand, the filter branch 500 can suppress the current scattered by the embedded high-frequency radiation unit to the bowl-shaped radiation unit to solve the high- and low-frequency coupling problem, thereby improving the S-parameter convergence and directional pattern indicators of the radiation unit; on the other hand, under the support of the filter branch 500, the second structural component 800 is more stably arranged on the two balun arms 220.

[0057] In some embodiments, reference Figure 5 A groove 221 is provided in the middle of one balun arm 220 in each dipole. The groove 221 is used to accommodate the coaxial cable 900 . A welding area 222 is provided in the other balun arm 220 . The inner conductor 910 of the coaxial cable 900 is connected to the welding area 222 .

[0058] It can be understood that the coaxial cable 900 is set on the groove 221 in the middle of the balun arm 220, which can eliminate the high-order modes generated by the feeding of the coaxial cable 900, ensuring that only the TEM mode is transmitted, avoiding energy efficiency reduction and signal distortion, thereby improving the gain of the antenna.

[0059] Preferably, the resistance of the coaxial cable 900 is 75 ohms. Figure 2The base 100 has a hole 120 for the coaxial cable 900 to pass through. Using the power divider principle, a 75-ohm coaxial cable 900 (impedance matched to 100 ohms) is soldered to the balun arm 220 for feeding. At the same time, the 75-ohm coaxial cable 900 passes through the hole 120 to the back of the base 100 and is connected to the 50-ohm cable using a two-in-one interface. The 50-ohm cable simultaneously outputs the same signal to two co-polarized 75-ohm coaxial cables 900, which are then transmitted to the co-polarized radiation arm 210.

[0060] In some embodiments, four second parasitic units 700 are further included, and the second parasitic units 700 are arranged on the two balun arms 220 of each dipole through the second structural member 800; a groove 221 is provided in the middle of one balun arm 220 in each dipole, and the groove 221 is used to accommodate the coaxial cable 900, and a welding area 222 is provided in the other balun arm 220, and the inner conductor 910 of the coaxial cable 900 is connected to the welding area 222.

[0061] It is understandable that the coaxial cable 900 is arranged on the groove 221 in the middle of the balun arm 220, and combined with the second parasitic unit 700, it can make the actual debugging more flexible and easier to obtain a good standing wave ratio.

[0062] In a second aspect, an embodiment of the present invention provides an antenna, comprising a radiation unit as described in any one of the embodiments of the first aspect.

[0063] It should be noted that, by placing the first and second structural members in appropriate positions, the operating frequency band of the radiation unit can reach 690-960 MHz, and each electrical path in the square frame 211 corresponds to a frequency point within the operating frequency of the radiation unit. The frequency point corresponding to the long side 11 in the square frame 211 is 155 MHz, and the frequency point corresponding to the short side 12 in the square frame 211 is 920 MHz. In addition, the S11 and S22 of the antenna in the required frequency band are both less than -15 dB, and the S21 data is less than -25 dB, indicating that the antenna has low reflection and good isolation effect. Figure 6 shown.

[0064] According to an embodiment of the present invention, a radiation unit and an antenna are provided. Four diagonally arranged dipoles form a positive and negative 45-degree dual-polarization bowl-shaped radiation unit. The ends of the radiation arms 210 of each two adjacent dipoles are connected through a first structural member 400. When the antenna vibrates, the first structural member 400 improves the strength of the radiation arm 210 to prevent the radiation arm 210 from deforming, thereby improving the signal quality. The radiation arm 210 includes a square frame 211, a first panel 212, and a folding panel 213. On the one hand, the square frame 211 is formed by the edges of two paths of different electrical lengths, one long and one short. Each electrical path in the frame corresponds to the working direction of the radiation unit. A frequency point within the frequency range, and there is a square hole in the middle of the frame. The design of the square hole can not only match the impedance, but also expand the frequency range. On the other hand, the folding panel 213 is respectively connected to the outer long side 11 and the short side 12 near the end of the square frame 211. Compared with the solution of extending the point coupling structure downward at the connection end point of the long side and the short side 12 in the square frame 211, the surface coupling structure of the folding panel 213 can increase the effective radiation distance and make the impedance change smoother. It can not only accurately and detailedly control the resonant characteristics of the antenna, effectively expand the operating frequency range of the antenna, but also increase the error capacity, thereby achieving the effect of reducing debugging.

[0065] 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 radiation unit, characterized in that: include: A base, wherein a raised platform is provided above the base, and the raised platform is used to support the high-frequency radiation unit; Four diagonally arranged dipoles, the four diagonally arranged dipoles being arranged around the base, the dipoles comprising two radiating arms and two balun arms, the balun arms being used to support the radiating arms, a metal wall being provided between the balun arms of every two adjacent dipoles; The ends of the radiating arms of every two adjacent dipoles are connected through a first structural member, and the radiating arms include a square frame, a first panel and a folding panel, the folding panel is respectively connected to the outer long side and the short side close to the end of the square frame, and the first panel is respectively connected to the inner long side of the square frame and the folding panel.

2. The radiation unit according to claim 1, characterized in that A filtering branch is also provided on each balun arm, and the filtering branch is parallel to the upper edge of the metal wall.

3. The radiation unit according to claim 1, characterized in that The first structural member includes a second panel, a third panel, a positioning plate and four first clips. The third panel is vertically connected to the outer long side of the second panel. The positioning plate is connected to the second panel and the third panel respectively. Two of the first clips are arranged on the outer long side of the second panel, and the other two first clips are arranged on the inner long side of the second panel.

4. The radiation unit according to claim 1, characterized in that It also includes four first parasitic units. A first accommodating groove is provided in the first structural member, and the first parasitic units are clamped in the first accommodating groove.

5. The radiation unit according to claim 1, characterized in that: The invention also includes four second parasitic units, which are arranged on two balun arms of each dipole through a second structural component.

6. The radiation unit according to claim 5, characterized in that The second structural member includes a fourth panel and a plurality of second clips, wherein the plurality of second clips are arranged on the fourth panel, and the second clips are used to be clipped onto the two balun arms of each dipole. A second accommodating groove is provided on the outer side of the fourth panel, and the second parasitic unit is clipped into the second accommodating groove.

7. The radiation unit according to claim 1, characterized in that A groove is provided in the middle of one balun arm in each dipole, the groove being used to accommodate the coaxial cable, and a welding area is provided in the other balun arm, the inner conductor of the coaxial cable being connected to the welding area.

8. The radiation unit according to claim 1, characterized in that The two balun arms in each dipole are tilted 45 degrees and arranged on the base.

9. The radiation unit according to claim 1, characterized in that: A hollow area is provided between the metal wall and the radiation arms of every two adjacent dipoles.

10. An antenna, characterized in that: Comprising the radiation unit according to any one of claims 1 to 9.

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