Radiation element and its manufacturing method, antenna device

Abstract

This invention relates to a radiating element, its manufacturing method, and an antenna device. The radiating element includes a radiating surface, a balun, and a base. The radiating surface includes at least one radiating arm with a polarization direction. The balun includes at least one feed balun. The feed balun includes a feed element and two balun grounds spaced apart from each other. The radiating arm includes two sub-radiating arms spaced apart from each other, and the two sub-radiating arms are integrally formed with the two balun grounds in a one-to-one correspondence. The balun grounds and the base are constructed as an integral bent component formed by bending the balun grounds relative to the base. The balun grounds include a mounting surface on the front side along the bending direction. The feed element is disposed on the two mounting surfaces of the two balun grounds and forms a stripline transmission line with the two balun grounds. The radiating element, its manufacturing method, and the antenna device of this invention have good cross-polarization, simple connection, and low cost.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a radiating element, its manufacturing method, and an antenna device. Background Technology

[0002] The radiating element is the main component of an antenna, enabling directional transmission and reception of electromagnetic waves for wireless communication. To reduce costs, most current radiating elements utilize bent sheet metal elements. This is achieved by creating notches in a sheet of metal, bending the notched portion downwards to form a balun, and then fixing the balun to a reflector via a PCB base. However, these radiating elements suffer from poor cross-polarization, complex connections between the balun and the base, and high costs. Summary of the Invention

[0003] Therefore, it is necessary to provide a radiating element with good cross-polarization, simple connection, and low cost, as well as its manufacturing method and antenna device.

[0004] One embodiment of this application provides a radiating unit, including a radiating surface, a balun, and a base. The radiating surface includes at least one radiating arm with a polarization direction, and the balun includes at least one feeding balun.

[0005] The power supply balun includes a power supply component and two balun grounds spaced apart from each other. The radiating arm includes two sub-radiating arms spaced apart from each other. The two sub-radiating arms and the two balun grounds are integrally formed in a one-to-one correspondence.

[0006] The balun and base are constructed as an integral bent component formed by bending the balun relative to the base. The balun includes a mounting surface on the front side along the bending direction. The power supply component is located on the two mounting surfaces of the two baluns and forms a strip transmission line with the two baluns.

[0007] In one embodiment, a virtual reference plane is defined between two corresponding Baron lands;

[0008] The mounting surfaces of the two corresponding baluns are both located on the side of the balun facing the reference plane;

[0009] There is a gap between the ends of the two corresponding baluns that are away from the base, allowing the power supply component to be inserted into the mounting surface of the two baluns.

[0010] In one embodiment, the orthographic projections of the mounting surfaces of the two baluns onto the reference plane have overlapping areas;

[0011] The orthographic projection of the power supply component onto the reference plane lies within the overlapping region.

[0012] In one embodiment, the power supply component includes a first power supply section, a second power supply section, and a third power supply section connected in sequence. The first power supply section and the third power supply section are respectively connected to the mounting surfaces of two baluns, and the second power supply section is suspended between the mounting surfaces of the two baluns.

[0013] In one embodiment, the subradiating arm includes two first support arms and two first extensions configured as sheets;

[0014] Two first support arms are connected to the two ends of the width direction of the balun and extend to the side away from the mounting surface. The width direction of the balun is perpendicular to the height direction and the thickness direction of the balun.

[0015] The two first extensions are respectively connected to the opposite inner sides of the two first support arms along the width direction, and the two first extensions are spaced apart from the first edges of the corresponding first support arms;

[0016] The first extension of each sub-radiating arm is coplanar.

[0017] In one embodiment, the first edges of the two first extensions of the same sub-radiating arm are parallel to each other; the edge of the first extension that connects to the corresponding first support arm is defined as the second edge.

[0018] The angle α between the first edge and the second edge of the first extension satisfies:

[0019] 0°≤α≤45°.

[0020] In one embodiment, the corresponding first support arm and first extension are configured as an integral bent member formed by bending the first extension relative to the first support arm.

[0021] In one embodiment, the radiation element is configured as a dual-polarized radiation element;

[0022] There are two radiating arms and two feed baluns;

[0023] Each sub-radiating arm and its corresponding balun are arranged in an axisymmetric and centrosymmetric manner with respect to the center of the radiating surface.

[0024] In one embodiment, there are two power supply units, which are arranged crosswise and spaced apart from each other in the height direction of the baron.

[0025] In one embodiment, the base includes a body and four mounting arms extending outward from the body;

[0026] Each balun is connected to the outer contour edge of the main body, and there is one balun between every two adjacent mounting arms.

[0027] In one embodiment, the orthographic projections of the two mounting surfaces of the balun on the reference plane are staggered.

[0028] The portion of the orthographic projection of the power supply component onto the reference plane lies between the orthographic projections of the two balun lands onto the reference plane.

[0029] In one embodiment, the mounting surfaces of the two baluns are parallel to the reference plane, and the power supply component is constructed as a sheet-like component, including a first power supply segment, a second power supply segment, and a third power supply segment connected in sequence. The first power supply segment and the third power supply segment are respectively connected to the mounting surfaces of the two baluns, and the second power supply segment is suspended between the mounting surfaces of the two baluns.

[0030] In one embodiment, the sub-radial arm includes a second support arm connected to each other and a sheet-like second extension; the second support arm is connected to the baron.

[0031] Each second extension is perpendicular to the corresponding baron, and all second extensions are coplanar.

[0032] In one embodiment, the radiating element satisfies at least one of the following conditions:

[0033] 1) The second extension is constructed as a long strip extending away from the baron land. The length L1 of the second extension is 1 / 4λ, where λ is the wavelength corresponding to the center frequency of the radiating unit.

[0034] 2) The height H of the Baron land is 1 / 4λ.

[0035] In one embodiment, the radiating element is configured as a dual-polarized radiating element with mutually orthogonal polarization directions; there are two radiating arms and two feed baluns; the radiating arm includes two sub-radiating arms that extend along the polarization direction of the corresponding radiating arm.

[0036] The sub-radial arm and the corresponding balun are constructed as an integral bent component formed by bending the sub-radial arm relative to the balun; and the sub-radial arm and the corresponding balun are perpendicular to each other;

[0037] Each sub-radiating arm and its corresponding balun are arranged in a centrally symmetrical manner with respect to the center of the radiating surface.

[0038] In one embodiment, the corresponding second extension and second support arm are constructed as an integral bent part.

[0039] In one embodiment, the radiating element is configured as a dual-polarized radiating element; the number of radiating arms and the number of feed baluns are both two.

[0040] There are two power supply units, which are arranged alternately and cross each other in the height direction of the Balun land.

[0041] In one embodiment, the base has a through hole, and one end of the power supply component passes through the through hole and extends to the side of the base away from the radiating surface.

[0042] In one embodiment, the radiating element is configured as a dual-polarized radiating element with mutually orthogonal polarization directions; the number of radiating arms and the number of feed baluns are both two;

[0043] When the sub-radiating arms and the balun extend in the opposite direction of their own bending direction to lie in the same plane as the base to form an intermediate structure, the intermediate structure is located within a 1 / 2λ x 1 / 2λ square region, where λ is the wavelength corresponding to the center frequency of the radiating unit.

[0044] This application also provides an antenna device, including a reflector and the aforementioned radiating element, with the base of the radiating element disposed on the reflector.

[0045] This application also provides a method for manufacturing a radiating element, used to manufacture the aforementioned radiating element. The method for manufacturing the radiating element includes:

[0046] A flat metal sheet is cut to form a pre-processed part, which includes a central part, at least two baluns extending outward from the central part, and radial parts connected to the baluns in a one-to-one correspondence.

[0047] At least a portion of each radiating part is bent relative to the corresponding balun part, and at least a portion of the radiating part is made coplanar;

[0048] Each baron is bent vertically toward the same side of the center relative to the center.

[0049] In one embodiment, a first cutting notch is formed at the connection position between each barn portion and the central portion;

[0050] In the step of bending each baron section perpendicularly toward the same side of the center section relative to the center section:

[0051] At the cut end of each balun corresponding to the first cutting notch, the balun is bent.

[0052] In one embodiment, the radiating part is constructed as a long strip and is connected to the side of the corresponding balun that is away from the first cutting notch; a second cutting notch is formed at the connection position between each balun and the corresponding radiating part.

[0053] In the step of bending at least a portion of each radiating part relative to the corresponding balun part:

[0054] The portion of the structure corresponding to the second cutting notch in each radiating part is bent relative to the corresponding balun part, and the bending direction of the bending operation on the radiating part is the same as that of the bending operation on the balun part; or

[0055] Each radiating part is bent relative to its corresponding balun part, and the bending direction of the radiating part is opposite to that of the balun part.

[0056] In one embodiment, the radiating portion includes two first support arm preforms and two first extension preforms;

[0057] Two first support arm prefabricated parts are connected at one end to the end of the balun part away from the center part, and the two first support arm prefabricated parts are located on both sides of the width direction of the corresponding balun part. Two first extension prefabricated parts are connected one-to-one to the side of the two first support arm prefabricated parts facing the center part.

[0058] The step of bending at least a portion of each radiating part relative to the corresponding balun part includes:

[0059] The first extension preform is bent vertically toward the first side relative to the corresponding first support arm preform, and the two first support arm preforms are bent toward the first side at the same angle relative to the corresponding balun, so that the two first extension preforms are coplanar and the edges of the two first extension preforms away from the corresponding first support arm preforms are spaced apart.

[0060] In one embodiment, the step of bending each baron portion vertically toward the same side of the center portion relative to the center portion includes:

[0061] The bending of the balun section is directed toward the second side, with the first and second sides being opposite sides of the flat metal sheet.

[0062] In one embodiment, the central portion includes a main body and four mounting arms extending outward from the main body;

[0063] The method of manufacturing the radiating unit also includes bending one of the mounting arms perpendicularly to the first side relative to the main body.

[0064] The beneficial effects of the aforementioned radiating element, its manufacturing method, and antenna device are as follows:

[0065] The two sub-radiating arms are integrally formed with two corresponding baluns. The baluns and base are constructed as a single bent component, with the balun bent relative to the base. Therefore, the sub-radiating arms, baluns, and base are integrally formed, eliminating the need for welding or assembly between them. This reduces the number of solder points in the entire radiating unit, simplifies the connection, and lowers costs. Furthermore, the radiating unit can be connected to the reflector via the base, further simplifying the connection between the radiating unit and the reflector.

[0066] On the other hand, by setting the two sub-radiating arms apart from each other and not connecting them, the problems of non-linear current and low polarization purity can be avoided, resulting in better cross-polarization. Attached Figure Description

[0067] Figure 1 This is a schematic diagram of the structure of the radiating unit provided in an embodiment of this application;

[0068] Figure 2 for Figure 1 A top view of the radiating element shown;

[0069] Figure 3 A schematic diagram of the radiating element provided in an embodiment of this application from another angle;

[0070] Figure 4 A schematic diagram of another structure of the radiating unit provided in an embodiment of this application;

[0071] Figure 5 for Figure 4 A top-view cross-sectional view of the radiating element shown;

[0072] Figure 6 A schematic diagram of another structure of the radiating unit provided in the embodiments of this application;

[0073] Figure 7 for Figure 6 A schematic diagram illustrating one of the reference planes in the radiation element shown is presented.

[0074] Figure 8 This is a schematic diagram of the structure in which the mounting surface of the radiating unit is located on the back side of the bending direction of the Balen land.

[0075] Figure 9 A schematic flowchart illustrating the method for fabricating a radiating element provided in an embodiment of this application;

[0076] Figure 10 A schematic diagram of a pre-processed part formed in the method for manufacturing a radiating unit provided in the embodiments of this application;

[0077] Figure 11A schematic diagram of a pre-processed part with another structure formed in the method for manufacturing a radiating unit provided in the embodiments of this application;

[0078] Figure 12 for Figure 11 A three-dimensional structural diagram of the pre-processed part;

[0079] Figure 13 To Figure 12 A schematic diagram of the pre-processed part being processed to the first state;

[0080] Figure 14 To Figure 13 A schematic diagram showing the pre-processed part being processed to the second state;

[0081] Figure 15 A schematic diagram of a pre-processed part with another structure formed in the method for manufacturing a radiating unit provided in the embodiments of this application;

[0082] Figure 16 for Figure 1 The vertical plane radiation pattern of the radiation element shown;

[0083] Figure 17 for Figure 1 The horizontal radiation pattern of the radiation element shown;

[0084] Figure 18 for Figure 1 The horizontal cross-polarization ratio of the radiating element shown;

[0085] Figure 19 for Figure 1 The standing wave curve of the radiating element is shown.

[0086] Figure 20 for Figure 6 The vertical plane radiation pattern of the radiation element shown;

[0087] Figure 21 for Figure 6 The horizontal radiation pattern of the radiation element shown;

[0088] Figure 22 for Figure 6 The horizontal cross-polarization ratio of the radiating element shown;

[0089] Figure 23 for Figure 6 The standing wave curve of the radiating element is shown.

[0090] Explanation of icon numbers:

[0091] 100. Radiation unit;

[0092] 10. Radiation surface;

[0093] 20. Radial arm; 200. Sub-radial arm; 211. First support arm; 212. First extension; 2121. First edge; 2122. Second edge; 221. Second support arm; 222. Second extension;

[0094] 30. Balun; 300. Feeding Balun; 310. Feeding Component; 311. First Feeding Section; 312. Second Feeding Section; 313. Third Feeding Section; 320. Balun Ground;

[0095] 40. Base; 41. Main body; 42. Mounting arm; 43. Through hole; 44. External guide; 45. Mounting hole;

[0096] 50. Pre-machined part; 51. Center part; 52. Baron part; 53. Radial part; 531. First support arm prefabricated part; 532. First extension prefabricated part; 54. First cutting notch; 541. Crease; 55. Second cutting notch;

[0097] 1000. Antenna device; 1020. Cable;

[0098] F, mounting surface; Z, reference plane; W, width direction. Detailed Implementation

[0099] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be 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 the present invention. However, the present invention can be practiced 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 the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0100] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limitations on this invention.

[0101] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0102] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0103] In this invention, unless otherwise explicitly 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," "over," and "on top" of 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.

[0104] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0105] The radiating element and antenna device of the present application are described below with reference to the accompanying drawings.

[0106] Figure 1 This is a schematic diagram of the structure of the radiating unit provided in an embodiment of this application; Figure 2 for Figure 1 A top view of the radiating element shown; Figure 3 A schematic diagram of the radiating element provided in an embodiment of this application from another angle; Figure 4 A schematic diagram of another structure of the radiating unit provided in an embodiment of this application; Figure 5 for Figure 4 A top-view cross-sectional view of the radiating element shown; Figure 6 A schematic diagram of another structure of the radiating unit provided in the embodiments of this application; Figure 7 for Figure 6 A schematic diagram illustrating one of the reference planes in the radiation element shown is presented. Figure 8 This is a schematic diagram of the structure in which the mounting surface of the radiating unit is located on the back side of the bending direction of the Balen land.

[0107] Reference Figure 1 , Figure 4 , Figure 6 In the radiating unit 100 provided in this application embodiment, the schematic diagram shown in the lower left corner of the figure is obtained after disassembling the power supply components, cables, etc.

[0108] The radiating unit 100 provided in this application embodiment includes a radiating surface 10, a balun 30 and a base 40. The radiating surface 10 includes at least one radiating arm 20 with a polarization direction, and the balun 30 includes at least one feeding balun 300.

[0109] The power supply balun 300 includes a power supply element 310 and two balun grounds 320 spaced apart from each other. The radiating arm 20 includes two sub-radiating arms 200 spaced apart from each other. The two sub-radiating arms 200 and the two balun grounds 320 are integrally formed in a one-to-one correspondence.

[0110] The balun 320 and the base 40 are constructed as an integral bent member formed by bending the balun 320 relative to the base 40. The balun 320 includes a mounting surface F on the front side along the bending direction. The power supply member 310 is disposed on the two mounting surfaces F of the two baluns 320 and forms a strip transmission line with the two baluns 320.

[0111] The two sub-radiating arms 200 are integrally formed with the two baluns 320 in a one-to-one correspondence. The baluns 320 and the base 40 are constructed as an integral bent part formed by bending the baluns 320 relative to the base 40. Therefore, the sub-radiating arms 200, baluns 320 and base 40 are integrally formed, and no welding or assembly is required between them, reducing the number of solder points in the entire radiation unit 100, simplifying the connection and reducing costs. In addition, the radiation unit 100 can be connected to the reflector (not shown) through the base 40, making the connection between the radiation unit 100 and the reflector also relatively simple.

[0112] On the other hand, the two sub-radiating arms 200 included in a radiating arm 20 are spaced apart from each other and are not connected to each other, which can avoid the problems of non-linear current and low polarization purity, and make the cross-polarization better.

[0113] Furthermore, since the power supply component 310 is located on the two mounting surfaces F of the two baluns 320, and the mounting surface F is the surface of the balun 320 located on the front side in the bending direction, the installation reliability of the power supply component 310 is higher compared to the power supply component 310 being located on the back side in the bending direction of the balun 320. This is because the balun 320 and the base 40 are bent and formed. After the bending and forming is completed, since the two baluns 320 are spaced apart from each other, and the corresponding two sub-radiating arms 200 are also spaced apart, the baluns 320 have a tendency to unbend in the opposite direction of the bending direction. Figure 8 As shown, the mounting surface F is located on the back side of the balun 320 in the bending direction. As the balun 320 unbends in the opposite direction of the bending direction, the space between the two mounting surfaces F for installing the power supply component 310 decreases, making it impossible to install the power supply component 310. However, if the mounting surface F is on the front side of the balun 320 in the bending direction, even if the balun 320 tends to unbend in the opposite direction of the bending direction, the installation space between the two mounting surfaces F will not decrease, and it will not affect the installation of the power supply component 310.

[0114] In some embodiments, continue to refer to Figure 1 , Figure 4 and Figure 6 The sub-radiating arm 200 and the corresponding balun 320 are also constructed as an integral bent component formed by bending the sub-radiating arm 200 relative to the balun 320. Figure 1 , Figure 6 In the example, the bending direction of the sub-radiating arm 200 relative to the balun 320 can be opposite to the bending direction of the balun 320 relative to the base 40. Figure 4 In the example, the bending direction of the sub-radiating arm 200 relative to the balun 320 can be the same as the bending direction of the balun 320 relative to the base 40; for example, both can be bent towards the upper side of the drawing.

[0115] In this embodiment, the radiating element 100 is described as a dual-polarized radiating element. In this case, there are two radiating arms 20 and two feed baluns 300, and the two radiating arms 20 are located in two orthogonal polarization directions. In the case where the radiating element 100 is a single-polarized radiating element, there is one radiating arm 20 and one feed balun 300. The situation is similar for single-polarized radiating elements, and will not be repeated here.

[0116] The power supply component 310 can be, for example, a metal-air strip or a PCB printed circuit board. In this embodiment, the power supply component 310 is described as a metal-air strip. The power supply component 310 and the corresponding two baluns 320 are spaced apart to achieve coupling connection, forming a stripline transmission line. The power supply component 310 and the corresponding baluns 320 can be connected by plastic fasteners or the like.

[0117] The two sub-radiating arms 200 and the two baluns 320 are integrally formed in a one-to-one correspondence, meaning that one sub-radiating arm 200 is integrally formed with one balun 320, and the other sub-radiating arm 200 is integrally formed with another balun 320.

[0118] Furthermore, the balun 320 and the base 40 are constructed as an integral bent component formed by bending the balun 320 relative to the base 40. This means that the balun 320 is bent relative to the base 40 in a predetermined bending direction, thereby forming an integral balun 320 and base 40. The balun 320 includes a mounting surface F along the front side of the bending direction. The mounting surface F along the front side of the bending direction refers to the foremost surface of the balun 320 along the bending direction during the relative bending process of the balun 320 and the base 40. That is, during the bending process, the surfaces of the balun 320 and the base 40 face each other and are close to each other.

[0119] In some embodiments, the balun 320 may be positioned perpendicular to the base 40.

[0120] In the embodiments of this application, reference is made to Figure 2 , Figure 5 , Figure 7 A virtual reference plane Z is defined between two corresponding baluns 320. The mounting surfaces F of the two corresponding baluns 320 are both located on the side of the balun 320 facing the reference plane Z. There is a gap between the ends of the two corresponding baluns 320 away from the base 40 for the power supply element 310 to be inserted into the mounting surfaces F of the two baluns 320.

[0121] With this configuration, the power supply unit 310 can be inserted between the two baluns 320 from the side of the balun 320 away from the base 40.

[0122] The mounting surfaces F of both baluns 320 are arranged facing the reference plane Z, so that the power supply component 310 can be mounted between the two mounting surfaces F. The two mounting surfaces F can be parallel to each other or have a certain angle between them. The sub-radiating arm 200 can be mounted on the end of the corresponding balun 320 away from the base 40.

[0123] Specifically, in Figure 2In the example, the schematic diagram at the top of the drawing is a top view, and the schematic diagram at the bottom of the drawing is a cross-sectional view obtained by transversely crossing at a preset position in the height direction of the radiating element 100. Since a reference plane Z is provided between a set of corresponding balun lands 320, in Figure 2 In the illustrated dual-polarized radiating element, the upper schematic shows only one set of reference planes Z corresponding to the 320 balun landmasses, while the lower schematic shows only another set of reference planes Z corresponding to the 320 balun landmasses. Figure 5 In the example, the reference plane Z corresponding to each of the two sets of Baron 320 is shown. Figure 7 In the example, only one set of corresponding reference planes Z between Baron 320 is shown.

[0124] In the embodiments of this application, reference is made to Figure 1 , Figure 2 In one possible implementation, the orthographic projections of the mounting surfaces F of the two baluns 320 onto the reference plane Z have an overlapping region. The orthographic projection of the power supply 310 onto the reference plane Z lies within this overlapping region.

[0125] That is, the mounting surfaces F of the two baluns 320 have mounting areas facing each other, and a facing space is defined between the mounting areas of the two baluns 320, in which the power supply 310 is located. In some embodiments, the projections of the mounting surfaces F of the two baluns 320 onto the reference plane Z may completely overlap, so that the two baluns 320 are completely facing each other, and the symmetry of the radiation surface 10 is also better. Alternatively, the projections of the mounting surfaces F of the two baluns 320 onto the reference plane Z may partially overlap.

[0126] At this time, the distance between the two mounting surfaces F can be greater than the outer contour dimension of the power supply component 310, so that the power supply component 310 can be accommodated between the two mounting surfaces F.

[0127] Furthermore, continue to refer to Figure 1 and Figure 3 , Figure 3 In the diagram, for easier observation, the power supply component 310 is moved to the upper side and enlarged for display. The power supply component 310 includes a first power supply segment 311, a second power supply segment 312, and a third power supply segment 313 connected in sequence. The first power supply segment 311 and the third power supply segment 313 are respectively connected to the mounting surfaces F of the two baluns 320, and the second power supply segment 312 is suspended between the mounting surfaces F of the two baluns 320.

[0128] In a practical implementation, the power supply component 310 can be formed by bending a relatively long strip along its own thickness direction. For example, for a long strip component, bending it twice at two points along its length towards the same side in the thickness direction forms the power supply component. Figure 3The power supply component 310 is shown. The length of the first power supply segment 311 is less than the length of the third power supply segment 313. The third power supply segment 313 can extend towards the base 40 and pass through the base 40, thereby electrically connecting with the inner conductor of the cable 1020.

[0129] In the embodiments of this application, Figure 1 , Figure 2 , Figure 3 In this embodiment, both sub-radiating arms 200 are located on the side of the corresponding balun 320 facing away from the mounting surface F. At this time, the end of the mounting surface F of the balun 320 facing away from the base 40 is not blocked by any component, so the power supply component 310 can be directly inserted between the mounting surfaces F of the two baluns 320.

[0130] Furthermore, continue to refer to Figure 3 The sub-radiating arm 200 includes two first support arms 211 and two first extensions 212 with a sheet-like structure. The two first support arms 211 are connected to the two ends of the width direction W of the balun 320 and extend towards the side away from the mounting surface F. The width direction W of the balun 320 is perpendicular to the height direction and thickness direction of the balun 320.

[0131] Two first extensions 212 are respectively connected to the opposite inner sides of two first support arms 211 along the width direction W, and the two first extensions 212 are spaced apart from the first edges 2121 of the corresponding first support arms 211. This space forms a slit between the two first extensions 212.

[0132] In this embodiment, the first extensions 212 of each sub-radiating arm 200 are all coplanarly arranged. Furthermore, the first extensions 212 of each sub-radiating arm 200 are all perpendicular to the corresponding balun 320.

[0133] In a specific implementation, each first extension 212 can be disposed at the end of the corresponding first support arm 211 facing the base 40.

[0134] In this embodiment, the first edges 2121 of the two first extensions 212 of the same sub-radiating arm 200 are parallel to each other. The edge of the first extension 212 that connects to the corresponding first support arm 211 is defined as the second edge 2122.

[0135] The angle α between the first edge 2121 and the second edge 2122 of the first extension 212 satisfies:

[0136] 0°≤α≤45°. Preferably 22.5°. This setting allows for better performance of the radiating unit 100. It should be noted that when the included angle between the first edge 2121 and the second edge 2122 changes, the included angle between the second edges 2122 of the two first extensions 212 of the same sub-radiating arm 200 changes when viewed from above, provided that the distance between the first edges 2121 of the two first extensions 212 of the same sub-radiating arm 200 remains unchanged.

[0137] The first edges 2121 of the two first extensions 212 of the same sub-radiating arm 200 can be parallel to each other, so that a rectangular gap is formed between the two first edges 2121. The center line of this gap passes through the center of the radiating surface 10.

[0138] In this embodiment, the corresponding first support arm 211 and first extension 212 are constructed as an integral bent member formed by bending the first extension 212 relative to the first support arm 211. The first extension 212 may be perpendicular to the base 320 and parallel to the base 40.

[0139] Furthermore, in an embodiment where the radiation unit 100 is configured as a dual-polarized radiation unit 100 and the number of radiation arms 20 and feed baluns 300 are both two, each sub-radiation arm 200 and the corresponding balun ground 320 are arranged in an axisymmetric and centrally symmetric manner with respect to the center of the radiation surface 10.

[0140] In addition, one of the radiation arms 20 is located in one polarization direction, and the other radiation arm 20 is located in another orthogonal polarization direction. At this time, the four sub-radiation arms 200 are arranged at intervals between each other.

[0141] Continue to refer to Figure 3 There are two power supply units 310, which are arranged alternately and cross each other in the height direction of the baron 320.

[0142] This saves space. The two power supply components 310 intersect each other in the second power supply section 312, and the mounting surfaces F of the four baluns 320 together define a square mounting space in which the two power supply components 310 are located.

[0143] Continue to refer to Figure 1 The base 40 includes a main body 41 and four mounting arms 42 extending outward from the main body 41.

[0144] Each balun 320 is connected to the outer contour edge of the main body 41, and a balun 320 is provided between every two adjacent mounting arms 42.

[0145] This reduces the spacing between the four baluns 320, and the mounting arm 42 extends outward from the main body 41, allowing for a longer dimension, resulting in a larger overall outer contour of the base 40 and better support performance after connection with the reflector.

[0146] In some embodiments, at least one mounting arm 42 is bent away from the radiating surface 10 to form an outer conductor 44, which may be partially electroplated for electrical connection with the outer conductor of the cable 1020.

[0147] In the embodiments of this application, reference is made to Figure 4 , Figure 5 , Figure 6 , Figure 7 In one embodiment, the orthographic projections of the two mounting surfaces F of the balun 320 on the reference plane Z are staggered.

[0148] A portion of the orthographic projection of the power supply element 310 onto the reference plane Z lies between the orthographic projections of the two baluns 320 onto the reference plane Z.

[0149] The orthographic projections of the mounting surfaces F of the two baluns 320 on the reference plane Z are offset from each other, meaning that the mounting surfaces F of the two baluns 320 are offset from each other and have no directly opposite parts. Furthermore, after the power supply component 310 is installed on the mounting surfaces F of the two baluns 320, a portion of the power supply component 310 is located between the two mounting surfaces F.

[0150] At this time, the distance between the two mounting surfaces F can be approximately equal to or slightly greater than the thickness of the power supply component 310.

[0151] Furthermore, the mounting surfaces F of the two baluns 320 are parallel to the reference plane Z. The power supply component 310 is constructed as a sheet and includes a first power supply segment 311, a second power supply segment 312, and a third power supply segment 313 connected in sequence. The first power supply segment 311 and the third power supply segment 313 are respectively connected to the mounting surfaces F of the two baluns 320, and the second power supply segment 312 is suspended between the mounting surfaces F of the two baluns 320.

[0152] This sheet-like power supply component 310 is actually sandwiched between the mounting surfaces F of the two baluns 320.

[0153] exist Figure 4 and Figure 5 ,as well as Figure 6 and Figure 7 In the example, the sub-radiating arm 200 includes a second support arm 221 and a sheet-like second extension 222 connected to each other. The second support arm 221 is connected to the barron 320.

[0154] Each second extension 222 is perpendicular to the corresponding barn 320, and all second extensions 222 are coplanar.

[0155] exist Figure 4 In the example, the second extension 222 is connected to the side of the second support arm 221 facing the base 40. Furthermore, the second extension 222 and the second support arm 221 are arranged along the thickness direction of the corresponding balun 320. The second support arm 221 and the corresponding balun 320 are coplanar.

[0156] exist Figure 6 In the example, the second support arm 221 and the second extension 222 are arranged sequentially along the thickness direction of the corresponding balun 320. Furthermore, the second support arm 221 and the second extension 222 are coplanar and both perpendicular to the corresponding balun 320.

[0157] In the embodiments of this application, reference is made to Figure 4 and Figure 6 The second extension 222 is constructed as a long strip extending in a direction away from the baron land 320.

[0158] The length L1 of the second extension 222 is 1 / 4λ, where λ is the wavelength corresponding to the center frequency of the radiating element 100.

[0159] Furthermore, in some embodiments, the length L1 of the sub-radiating arm 200 is approximately 7 times the width M of the sub-radiating arm 200. Additionally, the height of the balun 320 is 1 / 4λ.

[0160] The length of the sub-radiating arm 200 is seven times the width of the sub-radiating arm 200, making the sub-radiating arm 200 wider, which can increase the standing wave bandwidth of the radiating element 100.

[0161] In some embodiments, the radiating unit 100 is configured as a dual-polarized radiating unit with mutually orthogonal polarization directions, and the radiating arm 20 includes two sub-radiating arms 200 extending along the polarization direction of the corresponding radiating arm 20. Furthermore, the sub-radiating arm 200 and the corresponding balun 320 are constructed as an integral bent member formed by bending the sub-radiating arm 200 relative to the balun 320. Thus, the sub-radiating arm 200, the balun 320, and the base 40 are formed as an integral bent member, and the sub-radiating arm 200, the balun 320, and the base 40 can be formed by bending a pre-processed part cut from the same sheet metal. Additionally, the sub-radiating arm 200 and the corresponding balun 320 are perpendicular to each other. Each sub-radiating arm 200 and each corresponding balun 320 are arranged centrally symmetrically with respect to the center of the radiating surface 10. Furthermore, the length L1 of the second extension 222 is 1 / 4λ and the height of the balun 320 is 1 / 4λ. This means that the balun 320 and the sub-radial arm 200 can actually be integrally cut from a single metal sheet with an area of ​​approximately λ / 2 × λ / 2. This saves raw materials and reduces manufacturing costs. The balun 320, sub-radial arm 200, and base 40 can be made of sheet metal, reducing internal cracks and holes and avoiding interlocking problems.

[0162] In addition, in specific implementation, the length L1 of the second extension 222 (that is, the length of the sub-radiating arm 200) can be greater than, less than or equal to the height of the balun 320, which is more flexible in design.

[0163] Furthermore, the corresponding second extension 222 and second support arm 221 are constructed as an integral bent part.

[0164] exist Figure 4 In the example, the second support arm 221 and the second extension 222 are formed on the surface of the balun 320 other than the mounting surface F, for example, on the side adjacent to the mounting surface F, so as not to interfere with the insertion operation of the power supply 310. In addition, the second extension 222 can also limit the power supply 310.

[0165] exist Figure 6 In the example, the second support arm 221 and the second extension 222 are formed on the top surface of the baron 320.

[0166] In this embodiment, when the radiating element 100 is configured as a dual-polarized radiating element 100, and the number of radiating arms 20 and feed baluns 300 are both two,... Figure 4 , Figure 6 In the embodiment, each sub-radiating arm 200 and the corresponding balun 320 are arranged in a centrally symmetrical manner with respect to the center of the radiating surface 10.

[0167] Understandably, when the sub-radiating arm 200 and the corresponding balun 320 unfold in the opposite direction of their bending direction to lie in the same plane as the base 40 to form an intermediate structure, the intermediate structure lies within a 1 / 2λ x 1 / 2λ square area. That is to say, the sub-radiating arm 200, the balun 320, and the base 40 can be formed by bending a pre-processed part (intermediate structure) cut from the same sheet metal. In this way, the sub-radiating arm 200, the balun 320, and the base 40 can be made using very small sheets of metal, significantly reducing manufacturing costs.

[0168] Furthermore, there are two power supply units 310, which are arranged alternately and cross each other in the height direction of the baron 320.

[0169] In this embodiment of the application, further reference is made to... Figure 4 , Figure 6 The base 40 includes a main body 41 and four mounting arms 42 extending outward from the main body 41, with each balun 320 connected to the mounting arm 42 in a corresponding manner.

[0170] When viewed from the radiation surface 10 side, the balun 320 is connected to the right side of the corresponding mounting arm 42, and the second extension 222 is located on the left side of the second support arm 221.

[0171] Furthermore, referring to Figure 1 , Figure 4 , Figure 6 The base 40 is provided with a through hole 43, and one end of the power supply component 310 passes through the through hole 43 and extends to the side of the base 40 away from the radiation surface 10.

[0172] Thus, one end of the power supply component 310 can pass through the base 40 via the through hole 43 and be electrically connected to the inner core of the coaxial cable 1020. The power supply component 310 and the inner core of the coaxial cable 1020 can be connected by soldering. Of course, when there are two power supply components 310, the number of through holes 43 on the base 40 can be correspondingly set to two.

[0173] In addition, Figure 4 , Figure 6 In one embodiment, the through hole 43 can be provided on the mounting arm 42 of the base 40. For example, in the case of the dual-polarized radiation unit 100, the two through holes 43 can be provided on two adjacent mounting arms 42 respectively. Figure 1 , Figure 2In the embodiment, the through hole 43 can be provided on the main body 41 of the base 40. In the case of the dual-polarized radiation unit 100, the outline size of the through hole 43 can be set to be larger so that both feeders 310 can be inserted into the same through hole 43. It is understood that when both feeders 310 are inserted into the through hole 43, there is a certain distance between the two feeders 310.

[0174] Of course, mounting holes 45 can also be provided on the base 40, through which fasteners or the like can pass and connect to the reflector plate, thereby fixing the radiation unit 100 as a whole to the reflector plate. The positions of the through holes 43 can be located one-to-one on the mounting arms 42 of the base 40.

[0175] A second aspect of this application also provides an antenna device, including a reflector (not shown) and a radiating element 100 as described above, wherein the base 40 of the radiating element 100 is disposed on the reflector.

[0176] In a specific implementation, the base 40 of the radiating unit 100 is electrically connected to the reflector, and the end of the power supply 310 facing away from the radiating surface 10 passes through the reflector and extends to the back side of the reflector.

[0177] Furthermore, the antenna device also includes a cable 1020, the inner conductor of which is electrically connected to a feed element 310 extending to the rear side of the reflector. Figure 1 In the radiation unit 100, the outer conductor of the cable 1020 is electrically connected to the outer conductor 44 of the base 40.

[0178] Figure 9 A schematic flowchart illustrating the method for fabricating a radiating element provided in an embodiment of this application; Figure 10 A schematic diagram of a pre-processed part formed in the method for manufacturing a radiating unit provided in the embodiments of this application; Figure 11 A schematic diagram of a pre-processed part with another structure formed in the method for manufacturing a radiating unit provided in the embodiments of this application; Figure 12 for Figure 11 A three-dimensional structural diagram of the pre-processed part; Figure 13 To Figure 12 A schematic diagram of the pre-processed part being processed to the first state; Figure 14 To Figure 13 A schematic diagram showing the pre-processed part being processed to the second state; Figure 15 This is a schematic diagram of a pre-processed part with another structure formed in the method for manufacturing a radiating unit provided in the embodiments of this application.

[0179] Reference Figures 9-15This application embodiment also provides a method for manufacturing a radiating element, used to manufacture the radiating element 100 as described above. The method for manufacturing the radiating element 100 includes:

[0180] S10. Cut the flat metal sheet to form a pre-processed part, the pre-processed part including a central part, at least two baluns extending outward from the central part, and radial parts connected to the baluns in a one-to-one correspondence.

[0181] S20. At least a portion of each radiating part is bent relative to the corresponding balun part, and at least a portion of the radiating part is made coplanar.

[0182] S30. Bend each baron section vertically toward the same side of the center section relative to the center section.

[0183] In this embodiment, the metal sheet can be, for example, a flat metal sheet, which is formed into a pre-processed part 50 through processes such as cutting. Here, the dual-polarized radiation unit 100 is used as an example for explanation. The case where the radiation unit 100 is single-polarized is similar and will not be described again here.

[0184] The radiating unit 100 manufactured by the above method is formed by bending the same flat metal sheet, which eliminates the need for numerous welding points. The inherent hardness of the metal is sufficient to support the balun 320 and the radiating surface 10, thus reducing the number of components, simplifying assembly and welding, and improving the efficiency of the radiating unit 100. Furthermore, since only partial electroplating of the outer conductor 44 is required, the cost is also reduced.

[0185] In addition, the radiation unit 100 can be connected to the reflector via the base 40, which makes the connection between the radiation unit 100 and the reflector simpler.

[0186] In this embodiment, the radiating portion 53 may be bent first, followed by the balun portion 52, or the balun portion 52 may be bent first, followed by the radiating portion 53. This application does not impose any limitation on this.

[0187] In the embodiments of this application, reference is made to Figure 11 and Figure 15 Each balun 52 and the central part 51 are connected by a first cutting notch 54.

[0188] In step S30, the step of bending each barn portion 52 vertically toward the same side of the center portion 51 relative to the center portion 51:

[0189] At the cut end position of each balun 52 corresponding to the first cutting notch 54, the balun 52 is bent.

[0190] Furthermore, the radiating portion 53 is constructed as an elongated strip, and the radiating portion 53 is connected to the side of the corresponding balun portion 52 that is opposite to the first cutting notch 54. A second cutting notch 55 is formed at the connection position between each balun portion 52 and the corresponding radiating portion 53.

[0191] Step S20, in the step of bending at least a portion of each radiating part 53 relative to the corresponding balun part 52:

[0192] It is possible Figure 11 As shown, the portion of each radiating part 53 corresponding to the second cutting notch 55 is bent relative to the corresponding balun part 52, and the bending direction of the bending operation on the radiating part 53 is the same as that of the bending operation on the balun part 52.

[0193] Or in Figure 15 In the example, each radiating part 53 is bent relative to the corresponding balun part 52, and the bending direction of the bending operation on the radiating part 53 is opposite to that of the bending operation on the balun part 52.

[0194] Continue to refer to Figure 10 The radiating part 53 includes two first support arm preforms 531 and two first extension preforms 532.

[0195] Two first support arm preforms 531 are connected at one end to the end of the balun portion 52 away from the center portion 51, and the two first support arm preforms 531 are located on the width direction side of the corresponding balun portion 52. Two first extension preforms 532 are connected one-to-one to the side of the two first support arm preforms 531 facing the center portion 51.

[0196] Step S20, the step of bending at least a portion of each radiating part 53 relative to the corresponding balun part 52, includes:

[0197] The first extension preform 532 is positioned relative to the corresponding first support arm preform 531 towards the first side (e.g., Figure 10 The two first support arm preforms 531 are bent vertically (inward from the paper) and bent at the same angle relative to the corresponding balun portion 52 towards the first side, so that the two first extension preforms 532 are coplanar and the edges of the two first extension preforms 532 away from the corresponding first support arm preforms 531 are spaced apart.

[0198] Combination Figure 10 and Figure 1 The first extension preform 532 forms the first extension 212, and the first support arm preform 531 forms the first support arm 211.

[0199] Further, in step S30, the step of bending each barn portion 52 vertically toward the same side of the center portion 51 relative to the center portion 51:

[0200] The bending of the balun 52 is directed toward the second side, with the first and second sides being opposite sides of the flat metal sheet.

[0201] Furthermore, the central part 51 includes a main body 41 and four mounting arms 42 extending outward from the main body 41.

[0202] The method of manufacturing the radiating unit 100 further includes bending one of the mounting arms 42 vertically toward the first side relative to the main body 41, so that the bent mounting arm 42 forms an outer guide 44.

[0203] The following is combined Figure 1 and Figure 10 Detailed description Figure 1 Method for fabricating the radiating unit in the embodiment.

[0204] The method includes:

[0205] Step 1: Position the first extension preform 532 relative to the corresponding first support arm preform 531 towards the first side (e.g., Figure 10 The two first support arm preforms 531 are bent vertically (perpendicular to the paper and inwards) and bent at the same angle relative to the corresponding balun portion 52 towards the first side, making the two first extension preforms 532 coplanar and spacing the edges of the two first extension preforms 532 away from the corresponding first support arm preforms 531. At this time, the first extension preform 532 forms the first extension 212, and the first support arm preform 531 forms the first support arm 211.

[0206] Step 2: Bend the balun 52 toward the second side relative to the center 51, where the first side and the second side are opposite sides of the flat metal sheet.

[0207] Step 3: Bend one of the mounting arms 42 vertically toward the first side relative to the main body 41, so that the bent mounting arm 42 forms the outer guide 44.

[0208] The following is combined Figure 4 and Figure 12 , Figure 13 , Figure 14 Detailed description Figure 4 Method for fabricating the radiating unit in the embodiment.

[0209] The method includes:

[0210] Step 1: Refer to Figure 12 and Figure 13The portion of each radiating section 53 corresponding to the second cutting notch 55 is bent upward relative to the corresponding balun section 52. In the radiating section 53, the bent portion forms the second extension 222, and the unbent portion forms the second support arm 221.

[0211] Step 2: Combining Figure 12 and Figure 13 At the cut ends of each balun portion 52 corresponding to the first cutting notch 54, the balun portion 52 is bent upwards. The balun portion 52 forms a balun base 320, and the central portion 51 forms a base 40.

[0212] The following is combined Figure 6 and Figure 15 Detailed description Figure 6 Method for fabricating the radiating unit in the embodiment.

[0213] The method includes:

[0214] Step 1: Bend each radiating part 53 relative to the corresponding balun part 52 at the position of the second cutting notch 55, with the bending direction along... Figure 15 The paper is facing inwards. The crease from the bend is 541. Figure 15 As shown, it is located at the junction where the radiating part 53 connects with the balun part 52.

[0215] Step 2: At the position of the cut end of the first cutting notch 54 corresponding to each balun 52, along the balun 52... Figure 15 The paper is bent outwards. The balun 52 forms the balun base 320, and the center 51 forms the base 40.

[0216] The performance of the radiation unit in the embodiments of this application will be tested below.

[0217] Figure 16 for Figure 1 The vertical plane radiation pattern of the radiating element is shown. Figure 16 The graph shows the radiating element's curves at three frequency points: 1710MHz, 1770MHz, and 1830MHz. Figure 16 In the diagram, the horizontal axis represents angle, and the vertical axis represents gain. Figure 16 It can be seen that in the radiating element 100 of this application, the peak gain at the above three frequency points is about 8.5dB, which has good radiation performance.

[0218] Figure 17 for Figure 1 The horizontal plane radiation pattern of the radiating element is shown. Figure 17 The graph shows the radiating element's curves at three frequency points: 1710MHz, 1770MHz, and 1830MHz. Figure 17In the diagram, the horizontal axis represents angle, and the vertical axis represents gain. Figure 17 It can be seen that in the radiating element 100 of this application, the peak gain at the above three frequency points is about 8.5dB, which has good radiation performance.

[0219] Figure 18 for Figure 1 The horizontal cross-polarization ratio of the radiating element shown. Figure 18 The graph shows the radiating element's curves at three frequency points: 1710MHz, 1770MHz, and 1830MHz. Figure 18 In the diagram, the horizontal axis represents angle, and the vertical axis represents cross-polarization ratio. From... Figure 18 It can be seen that in the radiating element 100 of this application, the cross-polarization ratio at the 0° position is greater than 15, the polarization purity is better, and therefore it has good radiation performance.

[0220] Figure 19 for Figure 1 The standing wave curve of the radiating element is shown. Figure 19 The standing wave curves for positive and negative polarization of the radiating element are shown in the figure. Figure 19 In the diagram, the horizontal axis represents frequency, and the vertical axis represents standing wave. Figure 19 It can be seen that the standing wave ratio in the radiating element 100 of this application is around 1.5, thus exhibiting good radiation performance.

[0221] Therefore, Figure 1 The radiating element shown can achieve better standing wave and radiation performance.

[0222] Figure 20 for Figure 6 The vertical plane radiation pattern of the radiating element is shown. Figure 20 The graph shows the radiating element's curves at three frequency points: 1710MHz, 1770MHz, and 1830MHz. Figure 20 In the diagram, the horizontal axis represents angle, and the vertical axis represents gain. Figure 20 It can be seen that in the radiating element 100 of this application, the peak gain at the above three frequency points is about 8.5dB, which has good radiation performance.

[0223] Figure 21 for Figure 6 The horizontal plane radiation pattern of the radiating element is shown. Figure 21 The graph shows the radiating element's curves at three frequency points: 1710MHz, 1770MHz, and 1830MHz. Figure 21 In the diagram, the horizontal axis represents angle, and the vertical axis represents gain. Figure 21 It can be seen that in the radiating element 100 of this application, the peak gain at the above three frequency points is about 8.5dB, which has good radiation performance.

[0224] Figure 22 for Figure 6 The horizontal cross-polarization ratio of the radiating element shown. Figure 22 The graph shows the radiating element's curves at three frequency points: 1710MHz, 1770MHz, and 1830MHz. Figure 22 In the diagram, the horizontal axis represents angle, and the vertical axis represents cross-polarization ratio. From... Figure 22 It can be seen that in the radiating element 100 of this application, the cross-polarization ratio at the 0° position is greater than 15, the polarization purity is better, and therefore it has good radiation performance.

[0225] Figure 23 for Figure 6 The standing wave curve of the radiating element is shown. Figure 23 The standing wave curves for positive and negative polarization of the radiating element are shown in the figure. Figure 23 In the diagram, the horizontal axis represents frequency, and the vertical axis represents standing wave. Figure 23 It can be seen that the standing wave ratio in the radiating element 100 of this application is within 1.5, thus exhibiting good radiation performance.

[0226] Therefore, Figure 6 The radiating element shown can achieve better standing wave and radiation performance.

[0227] 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.

[0228] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A radiating unit, characterized in that, It includes a radiating surface, a balun, and a base, wherein the radiating surface includes at least one radiating arm with a polarization direction, and the balun includes at least one feed balun; The power supply balun includes a power supply component and two balun grounds spaced apart from each other. The radiating arm includes two sub-radiating arms spaced apart from each other. The two sub-radiating arms and the two balun grounds are integrally formed in a one-to-one correspondence. The balun and the base are constructed as an integral bent member formed by bending the balun relative to the base. The balun includes a mounting surface on the front side along the bending direction. The power supply is disposed on the two mounting surfaces of the two baluns and forms a strip transmission line with the two baluns. The sub-radial arm, the balun, and the base are formed by bending a pre-processed part cut from the same sheet metal; the pre-processed part includes a central portion, at least two balun portions extending outward from the central portion, and radiating portions connected to the balun portions one to one, wherein the radiating portions are located on both sides of the corresponding balun portion along the width direction. The radiation unit is configured as a dual-polarized radiation unit with mutually orthogonal polarization directions; there are two radiation arms and two feed baluns; when the sub-radiation arms and the corresponding baluns are extended in the opposite direction of their own bending direction to be in the same plane as the base to form an intermediate structure, the intermediate structure is located in a 1 / 2λ x 1 / 2λ square area, where λ is the wavelength corresponding to the center frequency of the radiation unit; The sub-radial arm includes two first support arms and two first extensions configured as sheets; Two first support arms are connected to the two ends of the balun in the width direction and extend away from the mounting surface. The width direction of the balun is perpendicular to the height direction and the thickness direction of the balun. Two first extensions are respectively connected to the opposite inner sides of the two first support arms along the width direction, and the two first extensions are spaced apart from the first edges of the corresponding first support arms. The first extensions of each sub-radial arm are all coplanar. The first edges of the two first extensions of the same sub-radiating arm are parallel to each other; the edge of the first extension that connects to the corresponding first support arm is defined as the second edge; the angle α between the first edge and the second edge of the first extension satisfies: 0°≤α≤45°.

2. The radiating unit according to claim 1, characterized in that, Define a virtual reference plane located between the two corresponding Baron lands; The mounting surfaces of the two corresponding baluns are both located on the side of the balun facing the reference plane; There is a gap between the ends of the two corresponding baluns that are away from the base, for the insertion of a power supply element into the mounting surface of the two baluns.

3. The radiating unit according to claim 2, characterized in that, The orthographic projections of the mounting surfaces of the two said baluns onto the reference plane have an overlapping area; The orthographic projection of the power supply component onto the reference plane lies within the overlapping region.

4. The radiating unit according to claim 3, characterized in that, The power supply component includes a first power supply section, a second power supply section, and a third power supply section connected in sequence. The first power supply section and the third power supply section are respectively connected to the mounting surfaces of the two baluns, and the second power supply section is suspended between the mounting surfaces of the two baluns.

5. The radiating element according to claim 1, characterized in that, The corresponding first support arm and the first extension are constructed as an integral bent part formed by bending the first extension relative to the first support arm.

6. The radiating element according to claim 3, characterized in that, The radiation unit is configured as a dual-polarized radiation unit; The number of the radiating arms and the feeding balun are both two; Each of the sub-radiating arms and the corresponding balun are arranged in an axisymmetric and centrosymmetric manner with respect to the center of the radiating surface.

7. The radiating element according to claim 6, characterized in that, The number of power supply components is two, and the two power supply components are arranged crosswise and spaced apart from each other in the height direction of the Balun land.

8. The radiating element according to claim 6, characterized in that, The base includes a main body and four mounting arms extending outward from the main body; Each of the aforementioned baluns is connected to the outer contour edge of the body, and one of the aforementioned baluns is provided between every two adjacent mounting arms.

9. The radiating unit according to claim 2, characterized in that, The mounting surfaces of the two said baluns are arranged with their orthographic projections on the reference plane staggered; A portion of the orthographic projection of the power supply element onto the reference plane lies between the orthographic projections of the two baluns onto the reference plane.

10. The radiating element according to claim 9, characterized in that, The mounting surfaces of the two baluns are parallel to the reference plane. The power supply component is constructed as a sheet and includes a first power supply segment, a second power supply segment, and a third power supply segment connected in sequence. The first power supply segment and the third power supply segment are respectively connected to the mounting surfaces of the two baluns, and the second power supply segment is suspended between the mounting surfaces of the two baluns.

11. The radiating element according to claim 9, characterized in that, The sub-radial arm includes a second support arm and a sheet-like second extension connected to each other; the second support arm is connected to the baron. Each of the second extensions is perpendicular to the corresponding baron, and all the second extensions are coplanar.

12. The radiating element according to claim 11, characterized in that, The radiating element satisfies at least one of the following conditions: 1) The second extension is constructed as a long strip extending away from the said baron land, and the length L1 of the second extension is 1 / 4λ, where λ is the wavelength corresponding to the center frequency of the radiating element; 2) The height H of the Baron land is 1 / 4λ.

13. The radiating element according to claim 12, characterized in that, The radiation unit is configured as a dual-polarized radiation unit with mutually orthogonal polarization directions; there are two radiation arms and two feed baluns; the two sub-radiation arms included in the radiation arm extend along the polarization direction corresponding to the radiation arm. The sub-radial arm and the corresponding balun are constructed as an integral bent member formed by bending the sub-radial arm relative to the balun; and the sub-radial arm and the corresponding balun are perpendicular to each other; Each of the sub-radiating arms and the corresponding balun are arranged in a centrally symmetrical manner with respect to the center of the radiating surface.

14. The radiating element according to any one of claims 1-13, characterized in that, The base is provided with a through hole, and one end of the power supply component passes through the through hole and extends to the side of the base away from the radiating surface.

15. An antenna device, characterized in that, It includes a reflector and a radiating unit as described in any one of claims 1-14, wherein the base of the radiating unit is disposed on the reflector.

16. A method for manufacturing a radiating unit, characterized in that, Used to manufacture a radiation unit as described in any one of claims 1-14, wherein the radiation unit is configured as a dual-polarized radiation unit with mutually orthogonal polarization directions; The number of the radiating arms and the feeding balun are both two; The method for manufacturing the radiating unit includes: A flat metal sheet is cut to form a pre-processed part, the pre-processed part including a central part, at least two baluns extending outward from the central part, and radiating parts connected to the baluns in a one-to-one correspondence, wherein the radiating parts are located on one or both sides of the corresponding baluns along the width direction, and the pre-processed part is located within a 1 / 2λ x 1 / 2λ square region, where λ is the wavelength corresponding to the center frequency of the radiating unit; At least a portion of each of the radiating portions is bent relative to the corresponding balun portion, and at least a portion of the radiating portions are made coplanar; Each of the balun portions is bent perpendicularly toward the same side of the center portion relative to the center portion.

17. The method for manufacturing a radiating element according to claim 16, characterized in that, A first cutting notch is formed at the connection position between each of the balun portions and the central portion; In the step of bending each of the baron portions perpendicularly toward the same side of the center portion relative to the center portion: The bending operation is performed on each of the balun portions at the position corresponding to the cut end of the first cutting notch.

18. The method for manufacturing a radiating element according to claim 16, characterized in that, A first cutting notch is formed at the connection position between each of the balun portions and the central portion; the radial portion is constructed as a long strip and is connected to the side of the corresponding balun portion away from the first cutting notch; a second cutting notch is formed at the connection position between each of the balun portions and the corresponding radial portion. In the step of bending at least a portion of each of the radiating portions relative to the corresponding balun portion: Each of the radial portions corresponding to the second cutting notch is bent relative to the corresponding balun portion, and the bending operation of the radial portion and the bending operation of the balun portion are in the same bending direction. or Each of the radiating portions is bent relative to the corresponding balun portion, and the bending direction of the bending operation on the radiating portion is opposite to that of the bending operation on the balun portion.

19. The method for manufacturing a radiating element according to claim 16, characterized in that, The radiating section includes two first support arm prefabricated parts and two first extension prefabricated parts; Two first support arm preforms are connected at one end to the end of the balun portion away from the center portion, and the two first support arm preforms are located on both sides of the width direction corresponding to the balun portion. Two first extension preforms are connected one-to-one to the side of the two first support arm preforms facing the center portion. The step of bending at least a portion of each of the radiating portions relative to the corresponding balun portion includes: The first extension preform is bent vertically toward the first side relative to the corresponding first support arm preform, and the two first support arm preforms are bent toward the first side at the same angle relative to the corresponding balun portion, so that the two first extension preforms are coplanar and the edges of the two first extension preforms away from the corresponding first support arm preforms are spaced apart.

20. The method for manufacturing a radiating element according to claim 19, characterized in that, In the step of bending each of the balun portions perpendicularly toward the same side of the center portion relative to the center portion: The bending of the balun portion is directed toward the second side, where the first side and the second side are opposite sides of the planar metal sheet.

21. The method for manufacturing a radiating element according to claim 19, characterized in that, The central part includes a main body and four mounting arms extending outward from the main body; The method of manufacturing the radiating unit further includes bending one of the mounting arms perpendicularly toward the first side relative to the body.

Images