Radiating elements and antennas

Abstract

This application relates to a radiating element and an antenna. The radiating element includes two sets of orthogonally polarized half-wave dipoles and two feed components. Each set of half-wave dipoles includes two radiators arranged at relative intervals. The two feed components are arranged one-to-one with the two sets of half-wave dipoles. Each feed component includes a metal support and a feed element. One end of the metal support is electrically connected to one of the radiators of the corresponding half-wave dipole, and the other end of the metal support is used for grounding. The feed element is electrically connected to the other radiator of the corresponding half-wave dipole. The radiating element provided by this application is small in size and lightweight.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a radiating element and an antenna. Background Technology

[0002] With the continuous commercialization of 5G technology, the frequency bands and number of radiating elements required in base stations have greatly increased. Miniaturized, multi-band, and multi-standard antennas are increasingly becoming the mainstream antennas used in the communications industry. Existing base station antennas are large in size and weight, which is not conducive to antenna installation.

[0003] As the radiating element is one of the factors that determine the weight of an antenna, it is very important to develop a small and lightweight radiating element. Summary of the Invention

[0004] Therefore, it is necessary to provide a radiating element and an antenna to address the aforementioned technical problems.

[0005] In a first aspect, one embodiment of this application provides a radiating element, comprising:

[0006] Two sets of orthogonally polarized half-wave dipoles, each set of half-wave dipoles includes two radiators arranged at relative intervals;

[0007] Two power supply components are provided, each corresponding to one of the two sets of half-wave dipoles. Each power supply component includes a metal support and a power supply component. One end of the metal support is electrically connected to one of the radiators of the corresponding half-wave dipole, and the other end of the metal support is used for grounding. The power supply component is electrically connected to the other radiator of the corresponding half-wave dipole.

[0008] In one embodiment, the power supply element is a metal sheet, and the metal support has an axially extending mounting cavity. Part of the metal sheet is suspended in the mounting cavity, and one end of the metal sheet extends to be electrically connected to another radiator of the corresponding half-wave dipole. The other end of the metal sheet is used to be electrically connected to the power supply network.

[0009] In one embodiment, the radiating unit includes a mounting ring fitted onto a metal sheet, and the outer diameter of the mounting ring matches the inner diameter of the mounting cavity.

[0010] In one embodiment, the metal sheet includes multiple metal segments, each with a different width.

[0011] In one embodiment, the power supply is a coaxial cable, one end of the inner core of the coaxial cable is electrically connected to the other radiator of the corresponding half-wave dipole, and the outer conductor of the coaxial cable is electrically connected to the metal support.

[0012] In one embodiment, two radiators electrically connected to two metal supports are disposed on the same side of the radiating unit away from the isolation boundary.

[0013] Secondly, one embodiment of this application also provides an antenna, including a reflector and a radiating element as described in the first aspect above, wherein the radiating element is mounted on the reflector.

[0014] In one embodiment, a first isolation boundary and a second isolation boundary are respectively provided on opposite sides of the reflector, and the distance from the radiator electrically connected to the metal support in the radiation unit to the first isolation boundary is greater than the distance from the radiator electrically connected to the power supply to the second isolation boundary.

[0015] In one embodiment, the number of radiating elements is at least two, and the installation angles of two adjacent radiating elements are complementary.

[0016] In one embodiment, the radiating element is a low-frequency oscillator or a high-frequency oscillator.

[0017] This application provides a radiating element and an antenna. The radiating element has two sets of orthogonally polarized half-wave dipoles, each set of half-wave dipoles including two radiators arranged at relative intervals. Two feed components are arranged one-to-one with the two sets of half-wave dipoles. Each feed component includes a metal support and a feed element. One end of the metal support is electrically connected to one of the radiators of the corresponding half-wave dipole, and the other end of the metal support is used for grounding. The feed element is electrically connected to the other radiator of the corresponding half-wave dipole. In the radiating element provided in this embodiment, one set of half-wave dipoles corresponds to one feed component. Compared with the prior art where the radiating element includes four feed components, the volume and weight of the radiating element are reduced by half. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a radiating element provided in one embodiment;

[0020] Figure 2 A schematic diagram of the structure of a radiating element provided in one embodiment;

[0021] Figure 3 A schematic diagram of the structure of a radiating element provided in one embodiment;

[0022] Figure 4 A schematic diagram of the antenna structure provided in one embodiment;

[0023] Figure 5 A schematic diagram of the antenna structure is provided for another embodiment;

[0024] Figure 6 A schematic diagram of the antenna structure is provided for another embodiment;

[0025] Figure 7 A schematic diagram of the radiation direction of a radiation element provided in one embodiment;

[0026] Figure 8 A schematic diagram of the radiation direction of a radiation element provided for another embodiment;

[0027] Figure 9 A schematic diagram of the antenna structure is provided for another embodiment;

[0028] Figure 10 A schematic diagram of the antenna structure is provided for another embodiment;

[0029] Figure 11 A schematic diagram of the antenna structure provided for another embodiment.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Radiating element; 20. Antenna; 21. Reflector; 22. First isolation boundary; 23. Second isolation boundary; 24. Main body plate; 100. Half-wave dipole; 110. Radiator; 200. Feeding assembly; 210. Metal support; 220. Feeding component; 201. Mounting cavity. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] The serial numbers assigned to components in this document, such as "first" and "second," are used solely to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used solely for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] Currently, with the continuous commercialization of 5G technology, the frequency bands and number of radiating elements required in base stations have greatly increased. Miniaturized, multi-band, and multi-standard antennas are increasingly becoming the mainstream antennas used in the communications industry. Existing base station antennas are large in size and weight, which is not conducive to antenna installation. The weight of the radiating element accounts for a portion of the factors determining the size and weight of a base station antenna. The existing radiating element is a dual-polarized radiating element. The feed balun of this radiating element consists of four die-cast metal strips, whose upper ends are separated and connected to the radiators individually, and whose lower ends are connected to ground. Its length is one-quarter wavelength of the center frequency band, which can ensure that each polarized dipole is balanced fed. That is to say, this radiating element has four radiators, and the four die-cast metal strips feed the four radiators individually.

[0036] However, existing radiating elements are large and heavy; therefore, it is crucial to develop a small and lightweight radiating element. To address this, this application provides an antenna equipped with a small and lightweight radiating element.

[0037] The technical solution of this application and how it solves the technical problems will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0038] Please see Figure 1 One embodiment of this application provides a radiation unit 10, which includes two sets of orthogonally polarized half-wave dipoles 100 and two feeding components 200. The two sets of half-wave dipoles 100 have the same structure, and the two sets of feeding components 200 have the same structure. Specifically, the two sets of half-wave dipoles 100 are orthogonally distributed to form ±45-degree dual-polarized radiation.

[0039] Each set of half-wave dipoles 100 includes two radiators 110 arranged at relative intervals; two feed components 200 are arranged one-to-one with the two sets of half-wave dipoles 100. The two radiators in each set of half-wave dipoles 100 are arranged diagonally at intervals. The two feed components 200 are arranged one-to-one with the two sets of half-wave dipoles 100, that is, one feed component 200 corresponds to one half-wave dipole 100, and the feed component 200 is used to feed the corresponding half-wave dipole 100.

[0040] Each power supply component 200 includes a metal support 210 and a power supply component 220. One end of the metal support 210 is electrically connected to one of the radiators 110 of the corresponding half-wave dipole 100, and the other end of the metal support 210 is used for grounding. The power supply component 220 is electrically connected to the other radiator 110 of the corresponding half-wave dipole 100.

[0041] The metal support 210 has two connection ends, and the power supply component 220 also has two connection ends. One end of the metal support 210 is electrically connected to one of the radiators 110 of the half-wave dipole 100 corresponding to the power supply assembly 200 to which the metal support 210 belongs, and the other end of the metal support 210 is grounded. One end of the power supply component 220 is electrically connected to the other radiator 110 of the half-wave dipole 100 corresponding to the power supply assembly 200 to which the power supply component 220 belongs, and the other end of the power supply component 220 is used to connect to an external power supply network.

[0042] The metal support 210, the feed element 220, and the two radiators 110 in the corresponding half-wave dipole 100 of the feed assembly 200 form a feed path, so that the external feed network feeds the corresponding half-wave dipole 100 through the feed assembly 200. This embodiment does not limit the specific structure or materials used for the metal support 210 and the feed element 220, as long as their functions are achieved.

[0043] In one embodiment, the two feeder components 200 are set using a die-casting process. In other words, the feeder components 200 are cast using a specific machine based on a pre-set mold and the materials required for their fabrication. In this embodiment, the entire feeder component 200 is integrally formed; that is, the metal support 210 and the feeder component 220 within the feeder component 200 are integrally formed. This allows for flexible replacement in case of problems with the feeder component 200 or the half-wave dipole 100, providing high flexibility and practicality.

[0044] In another embodiment, the radiating unit 10 is constructed using a die-casting process. In other words, the radiating unit 10 is cast using a specific machine based on a pre-set mold and the materials required for its construction. In this embodiment, the entire radiating unit 10 is integrally formed; that is, the half-wave dipole 100 and the feeding assembly 200 within the radiating unit 10 are integrally formed. The die-casting process for constructing the radiating unit 10 is simple and efficient.

[0045] The radiating unit 10 provided in this embodiment includes two sets of orthogonally polarized half-wave dipoles 100, each set of half-wave dipoles 100 including two radiators 110 arranged relatively apart; two feed components 200 are arranged one-to-one with the two sets of half-wave dipoles 100, each feed component 200 including a metal support 210 and a feed component 220, one end of the metal support 210 being electrically connected to one of the radiators 110 of the corresponding half-wave dipole 100, and the other end of the metal support 210 being grounded, and the feed component 220 being electrically connected to the other radiator 110 of the corresponding half-wave dipole 100. In the radiating unit 10 provided in this embodiment, one set of half-wave dipoles 100 corresponds to one feed component 200, and compared with the prior art where the radiating unit 10 includes four feed components, the volume and weight of the radiating unit 10 are reduced by half.

[0046] Please see Figure 2 In one embodiment, the power supply component 220 is a metal sheet, and the metal support component 210 has an axially extending mounting cavity 201. Part of the metal sheet is suspended in the mounting cavity 201, and one end of the metal sheet extends to be electrically connected to another radiator 110 of the corresponding half-wave dipole 100. The other end of the metal sheet is used to be electrically connected to the power supply network.

[0047] The metal support 210 has an axially extending mounting cavity 201. One end of the metal sheet is electrically connected to another radiator 110 of the half-wave dipole 100 corresponding to the power supply assembly 200 to which the metal sheet belongs. Part of the metal sheet is suspended in the mounting cavity 201 of the metal support 210. The other end of the metal sheet is electrically connected to the power supply network through the inner core of a coaxial cable.

[0048] The metal sheet, metal support 210, and two radiators 110 in the half-wave dipole 100 form a power supply path. The electrical signal provided by the power supply network is transmitted to the metal sheet through the inner core of a coaxial cable and grounded to the metal support 210 through the outer conductor of the coaxial cable. The metal sheet transmits the received electrical signal to another radiator 110 in the half-wave dipole 100 connected to the metal sheet. This radiator 110 radiates the electrical signal. A radiator 110 connected to the metal support 210 receives the electrical signal radiated by the other radiator 110 connected to the metal sheet and transmits the electrical signal to the metal support 210.

[0049] In this embodiment, the feed element 220 in the feed assembly 200 is a metal sheet. This type of feed assembly 200 is easy to manufacture using a die-casting process, and when power is needed, a coaxial cable can be directly used to connect the metal sheet and the feed network, making connection convenient. Furthermore, suspending the metal sheet within the mounting cavity 201 of the metal support 210 reduces the overall volume of the feed assembly 200, thereby reducing the volume of the radiating unit 10. Moreover, suspending the metal sheet within the mounting cavity 201 of the metal support 210 protects the metal sheet, preventing damage and ensuring the normal operation of the radiating unit 10.

[0050] In an optional embodiment, the metal support 210 is a solid structure, with a portion of the metal sheet suspended outside the metal support 210. One end of the metal sheet is electrically connected to another radiator 110 of the corresponding half-wave dipole 100, and the other end of the metal sheet is used to be electrically connected to the power supply network via a coaxial cable.

[0051] In one embodiment, the radiating unit 10 includes a mounting ring fitted onto a metal sheet, and the outer diameter of the mounting ring matches the inner diameter of the mounting cavity.

[0052] When a portion of the metal sheet is suspended in the mounting cavity 201, a mounting ring fitted onto the metal sheet secures the other portion of the metal sheet to the metal support 210, allowing one end of the metal sheet to extend to and electrically connect to the other radiator 110 of the corresponding half-wave dipole 100. The outer diameter of the mounting ring matches the inner diameter of the mounting cavity 201 in the metal support 210, enabling the mounting ring to be fixed within the mounting cavity 201, thus fixing the metal sheet to the metal support 210. This embodiment does not limit the specific structure, size, or material of the mounting ring, as long as its function is achieved.

[0053] In this embodiment, the mounting ring fitted onto the metal sheet allows for a more convenient and faster fixation of the metal sheet to the metal support 210.

[0054] In one embodiment, the metal sheet comprises multiple metal segments, each with a different width. In other words, the metal sheet is composed of multiple metal segments, each with a different width.

[0055] In this embodiment, the impedance and coupling of the power supply component 200 can be adjusted by setting metal sheets composed of metal segments of different widths.

[0056] In one embodiment, the power supply component 220 is a coaxial cable, one end of the inner core of the coaxial cable is electrically connected to another radiator 110 of the corresponding half-wave dipole 100, and the outer conductor of the coaxial cable is electrically connected to the metal support component 210.

[0057] Coaxial cable is a type of electrical wire and signal transmission line. A coaxial cable consists of an inner core, a first insulation layer, an outer conductor, and a second insulation layer. The inner core is the innermost layer of the coaxial cable, surrounded by the first insulation layer, which serves as both insulation and a dielectric. The outer conductor is surrounded by the first insulation layer, and the second insulation layer is surrounded by the outer conductor, serving the same insulating function. The inner core is typically made of copper, while the outer conductor is typically made of copper or an alloy.

[0058] When the power supply component 220 is a coaxial cable, one end of the inner core of the coaxial cable is electrically connected to another radiator 110 of the half-wave dipole 100 corresponding to the power supply assembly 200 to which the power supply component 220 belongs, and the other end of the inner core of the coaxial cable is used to connect to an external power supply network. The outer conductor of the coaxial cable is electrically connected to the metal support 210 to realize the grounding setting of the coaxial cable through the metal support 210.

[0059] The coaxial cable, metal support 210, and two radiators 110 in the half-wave dipole 100 form a power supply path. The electrical signal provided by the power supply network is transmitted through the inner core of the coaxial cable to another radiator 110 in the half-wave dipole 100 connected to the inner core of the coaxial cable. This radiator 110 radiates the electrical signal. A radiator 110 connected to the metal support 210 receives the electrical signal radiated by the other radiator 110 connected to the coaxial cable and transmits the electrical signal to the metal support 210.

[0060] Normally, the external power supply network uses coaxial cables to supply power to the radiating unit 10. In this embodiment, the coaxial cable is used as the power supply component 220 and connected to the corresponding half-wave dipole 100, which simplifies the structure of the radiating unit 10 and makes the connection convenient.

[0061] In one embodiment, when the metal support 210 has an axially extending mounting cavity 201, a coaxial cable passes through the mounting cavity 201 and is electrically connected to the other radiator 110 of the corresponding half-wave dipole 100. By placing the coaxial cable within the mounting cavity 201 of the metal support 210, the overall volume of the power supply assembly 200 can be reduced, thereby reducing the volume of the radiating unit 10. Furthermore, placing the coaxial cable within the mounting cavity 201 of the metal support 210 provides protection for the coaxial cable, preventing damage and ensuring the normal operation of the radiating unit 10.

[0062] In one embodiment, two radiators 110, which are electrically connected to two metal supports 210 respectively, are disposed on the same side of the radiating unit 10 away from the isolation boundary.

[0063] Each half-wave dipole 100 includes two radiators 110. One radiator 110 is electrically connected to the metal support 210 in the feed assembly 200, and the other radiator 110 is electrically connected to the feed element 220 in the feed assembly 200. The two radiators 110 electrically connected to the metal support 210 in the feed assembly 200 are located on the same side of the radiating unit 10 away from the isolation boundary, while the two radiators 110 electrically connected to the feed element 220 in the feed assembly 200 are located on the same side of the radiating unit 10 near the isolation boundary.

[0064] In this embodiment, two radiators 110 electrically connected to the two metal supports 210 are respectively positioned on the same side of the radiating unit 10 away from the isolation boundary, and two radiators 110 electrically connected to the two feeders 220 are respectively positioned on the same side of the radiating unit 10 near the isolation boundary. This results in a weaker electrical signal from the radiators 110 on the side away from the isolation boundary and a stronger electrical signal from the radiators 110 on the side near the isolation boundary. Since the isolation boundary interferes with the electrical signals on the radiators 110, placing the radiators 110 with weaker signals on the side away from the isolation boundary and the radiators 110 with stronger signals on the side near the isolation boundary allows the asymmetry of the radiation pattern of the radiating unit 10 itself to offset the asymmetry caused by the isolation boundary, thereby making the radiation pattern of the radiating unit 10 symmetrical.

[0065] Please see Figure 4 One embodiment of this application provides an antenna 20, which includes a reflector 21 and a radiating element 10 as described in the above embodiment. The radiating element 10 is disposed on the reflector 21, which is also called the antenna base plate, and is used to reflect the electrical signals generated by the radiating element 10. This embodiment does not limit the specific structure of the reflector 21 or the materials used, as long as its function can be achieved.

[0066] The antenna 20 provided in this embodiment includes the radiating element 10 as described in the above embodiments. Therefore, the antenna 20 has all the structure and beneficial effects of the radiating element 10, which will not be repeated here. In addition, the antenna 20 provided in this embodiment is easy to install at existing sites and has high practicality.

[0067] In one embodiment, the reflector 21 has a first isolation boundary 22 and a second isolation boundary 23 on opposite sides. The distance from the radiator 110 electrically connected to the metal support 210 in the radiation unit 10 to the first isolation boundary 22 is greater than the distance from the radiator 110 electrically connected to the power supply 220 to the second isolation boundary 23.

[0068] The reflector 21 includes a main plate 24 and a first isolation boundary 22 and a second isolation boundary 23 disposed on opposite sides of the main plate 24. The main plate is flat, and the two isolation boundaries are located on opposite sides of the main plate 24. A radiating element 10 is disposed on the main plate 24. The distance between the radiator 110 electrically connected to the metal support 210 in the radiating element 10 and the first isolation boundary 22 is greater than the distance between the radiator 110 electrically connected to the feed element 220 in the radiating element 10 and the second isolation boundary 23. Specifically, the first isolation boundary 22 and the second isolation boundary 23 can be side plates perpendicular to opposite sides of the main plate 24.

[0069] The radiator 110 electrically connected to the metal support 210 in the radiation unit 10 has a weaker electrical signal, while the radiator 110 electrically connected to the power supply 220 in the radiation unit 10 has a stronger electrical signal. When the radiation unit 10 is placed between the first isolation boundary 22 and the second isolation boundary 23, the distance between the radiator 110 with the weaker electrical signal and the first isolation boundary 22 is set to be greater than the distance between the radiator 110 with the stronger electrical signal and the second isolation boundary 23. In this way, the influence of the first isolation boundary 22 on the radiation pattern of the radiator 110 with the weaker electrical signal is smaller than the influence of the second isolation boundary 23 on the radiation pattern of the radiator 110 with the stronger electrical signal, so as to achieve radiation pattern balance between the radiators on both sides of the radiation unit 10, that is, to make the radiation pattern of the radiation unit 10 symmetrical.

[0070] In an optional embodiment, the distance from the radiator 110 electrically connected to the metal support 210 in the radiating unit 10 to the first isolation boundary 22 is greater than the distance from the radiator 110 electrically connected to the feeder 220 to the second isolation boundary 23. Furthermore, the two radiators 110 electrically connected to the two metal supports 210 are respectively disposed on the same side of the radiating unit 10 near the first isolation boundary 22. In this way, the asymmetry of the radiation pattern of the radiating unit 10 itself can cancel the radiation pattern effect of the isolation boundary on the radiating unit 10, thereby making the radiation pattern of the radiating unit 10 symmetrical.

[0071] In an optional embodiment, the antenna 20 further includes a protective cover that covers the reflector 21 and encloses the radiating element 10 inside the protective cover. This provides protection for the radiating element 10, ensuring its normal operation and extending its service life.

[0072] In one embodiment, the number of radiating elements 10 is at least two, and the installation angles of two adjacent radiating elements 10 are complementary. This embodiment does not limit the number of radiating elements 10 in the antenna 20, and users can choose according to their actual application scenarios.

[0073] If antenna 20 has two adjacent radiating elements 10, such as Figure 5 As shown, the installation angles of the two radiating elements 10 are complementary. Specifically, the two radiators 110 electrically connected to the metal support 210 in one radiating element 10 are positioned opposite to the two radiators 110 electrically connected to the feed element 220 in the other radiating element 10, while the two radiators 110 electrically connected to the metal support 210 in one radiating element 10 are positioned away from each other. In other words, the two radiators 110 with weaker electrical signals in one radiating element 10 are positioned opposite to the two radiators 110 with stronger electrical signals in the other radiating element 10, while the two radiators 110 with weaker electrical signals in one radiating element 10 are positioned away from each other. Specifically, the phase difference between the electromagnetic signals radiated by two adjacent radiating elements 10 in the antenna 20 is 180 degrees.

[0074] In existing technologies, the radiating element of a feed balun, consisting of four die-cast metal strips, is positioned as follows: Figure 6 The radiation pattern in the left region is as follows Figure 7 As shown. Figure 7 The horizontal axis represents angle, and the vertical axis represents power. Figure 7 The curves with larger variations in amplitude represent the radiation patterns of the main polarization, while the curves with smaller variations represent the radiation patterns of the cross-polarization. Figure 7 It can be seen that the radiation direction of the radiating units in the prior art is asymmetrical. For example, for the cross-polarized radiation pattern, the left side shows a downward trend, while the right side shows an upward trend.

[0075] The radiation unit 10 provided in this embodiment is arranged as follows: Figure 6 The radiation pattern in the left region is as follows Figure 8 As shown. Figure 8 The horizontal axis represents angle, and the vertical axis represents power. Figure 8 The curves with larger variations in amplitude represent the radiation patterns of the main polarization, while the curves with smaller variations represent the radiation patterns of the cross-polarization. Figure 8 As can be seen from the embodiments of this application, the radiation direction of the radiation unit is symmetrical from left to right. For example, for the cross-polarized radiation pattern, the trends on the left and right sides are consistent.

[0076] Figure 7 and Figure 8 A comparison shows that the antenna 20 provided in this embodiment can ensure that the radiation patterns of the radiating elements 10 are mutually symmetrical, thereby improving the radiation performance of the radiating elements 10. When the antenna is a multi-frequency antenna, it can effectively improve the intermodulation performance of the multi-frequency antenna.

[0077] In one embodiment, the radiating element 10 is a low-frequency vibrator or a high-frequency vibrator. That is, the radiating element provided in this embodiment can be used as a low-frequency vibrator or a high-frequency vibrator in an antenna. Users can choose according to their actual application scenario.

[0078] In an optional embodiment, it is assumed that it is set to Figure 6 The left-hand radiating element 10 is in phase, and the right-hand radiating element 10 is out of phase by 180 degrees. Please refer to [link / reference]. Figure 9 The radiating element 10 provided in this embodiment is applied to the low-frequency band of a multi-frequency antenna. The radiating element 10 located on the left side of the reflector 21 is a low-frequency vibrator, and the one on the right side is a high-frequency radiating element. The low-frequency vibrator provided in this embodiment uses a positive-phase radiating element 10 that can cancel the asymmetry of the left boundary. Figure 9 The three rectangles on the left represent three low-frequency oscillators in positive phase on the left, and the multiple crosses on the right represent multiple high-frequency radiating units on the right. One low-frequency oscillator can correspond to multiple high-frequency radiating units.

[0079] In one embodiment, it is assumed that it is set to Figure 6 The left-hand radiating element 10 is in phase, and the right-hand radiating element 10 is out of phase by 180 degrees. Please refer to [link / reference]. Figure 10 The radiating element 10 provided in this embodiment is applied to the low-frequency band of a multi-frequency antenna. The radiating element 10 located on the right side of the reflector 21 is a low-frequency vibrator, and the radiating element on the left side is a high-frequency band radiating element. The low-frequency vibrator provided in this embodiment adopts a radiating element 10 with 180-degree phase reversal that can cancel the asymmetry of the right boundary. Figure 10 The three rectangles on the right represent three low-frequency oscillators that are 180 degrees out of phase on the right, and the multiple crosses on the left represent multiple high-frequency radiating units on the left. One low-frequency oscillator can correspond to multiple high-frequency radiating units.

[0080] In one embodiment, see Figure 11In this embodiment, the radiating element 10 is applied to the high and low frequency bands of the multi-frequency antenna. The low-frequency and high-frequency vibrators located on the left side of the reflector 21 are both positive-phase radiating elements 10 that can cancel the asymmetry of the left boundary; the low-frequency and high-frequency vibrators located on the right side of the reflector 21 are both anti-phase radiating elements 10 that can cancel the asymmetry of the right boundary by 180 degrees.

[0081] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A radiation unit, characterized by The radiation unit comprises: two groups of polarization-orthogonal half-wave dipoles, each group of the half-wave dipoles comprising two oppositely spaced radiators; two feeding assemblies, each of the feeding assemblies comprising a metal support and a feeding element, one end of the metal support being electrically connected to one of the radiators of the corresponding half-wave dipole, the other end of the metal support being used for grounding, and the feeding element being electrically connected to the other of the radiators of the corresponding half-wave dipole; wherein the two radiators electrically connected to the two metal supports, respectively, are arranged on the same side of the radiation unit away from the isolation boundary.

2. The radiation unit of claim 1, characterized in that The feeding element is a metal sheet, the metal support has an installation through cavity extending in the axial direction, part of the metal sheet is suspended in the installation through cavity, and one end of the metal sheet extends to be electrically connected to the other of the radiators of the corresponding half-wave dipole, and the other end of the metal sheet is used for electrical connection with a feeding network.

3. The radiation unit of claim 2, characterized in that The radiation unit comprises an installation ring, the installation ring is sleeved on the metal sheet, and the outer diameter of the installation ring matches the inner diameter of the installation through cavity.

4. The radiation unit of claim 2, wherein The metal sheet comprises a plurality of metal segments, each of the metal segments has a different width.

5. The radiation unit of claim 1, wherein, The feeding element is a coaxial cable, one end of an inner core of the coaxial cable is electrically connected to the other of the radiators of the corresponding half-wave dipole, and an outer conductor of the coaxial cable is electrically connected to the metal support.

6. An antenna, characterized by The radiation unit comprises a reflecting plate and the radiation unit as claimed in any one of claims 1 to 5, and the radiation unit is installed on the reflecting plate.

7. The antenna according to claim 6, characterized in that, The reflecting plate is provided with a first isolation boundary and a second isolation boundary on opposite sides, respectively, and the distance from the radiator electrically connected to the metal support to the first isolation boundary is greater than the distance from the radiator electrically connected to the feeding element to the second isolation boundary.

8. The antenna according to claim 6, characterized in that, The number of the radiation units is at least two, and the installation angles of two adjacent radiation units are complementary.

9. The antenna according to claim 8, characterized in that, The radiation unit is a low-frequency vibrator or a high-frequency vibrator.

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