An ultra-wideband radiation unit

Abstract

This application discloses an ultra-wideband radiating element, relating to the field of antenna technology in next-generation information technology. It includes: a radiating element body comprising four orthogonally arranged dipoles and a base. Each dipole includes two radiating arms and a dipole balun. The base, dipole balun, and radiating arms are integrally formed. The two radiating arms are connected to the base via dipole baluns. A balun short-circuit structure is provided between the two balun arms of each dipole balun for adjusting the ultra-wideband matching circle diagram. Each radiating arm has a first coupling stub and a second coupling stub. The first coupling stub is located at the end of the radiating arm connected to the dipole balun and extends towards the base. The second coupling stub is located at the end of the radiating arm away from the dipole balun and extends towards the base. Two feeding components are disposed on the base, each feeding component feeding two dipoles with the same polarization direction. This application exhibits high gain, good beam convergence, and low cost, meeting the requirements for ultra-wideband matching.

Description

Technical Field

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

[0002] With the rapid development of communication technology, base station antennas, as a key component of mobile communication systems, directly affect network coverage quality and system capacity through the performance of their radiating elements. Among various radiating element types, the bowl-shaped dipole has been widely used in the field of base station antennas due to its unique structural advantages. The bowl-shaped dipole utilizes the half-wave dipole radiation principle, achieving ±45° dual-polarization radiation through the orthogonal placement of two pairs of half-wave dipoles, effectively improving the coverage efficiency and signal quality of base station antennas.

[0003] However, as mobile communication technology evolves towards 5G and beyond, higher demands are placed on antenna bandwidth, integration, and cost. Related technologies typically employ feed cables with specific impedances through unbalanced parallel feeding for impedance matching, and the electrical length of these feed cables is not an integer multiple of half the wavelength, making them unsuitable for ultra-wideband applications. Furthermore, existing improvement schemes often involve adding extra matching networks or loading elements to extend bandwidth, resulting in complex radiating element structures, increased fabrication difficulty, and higher costs. Summary of the Invention

[0004] The purpose of this application is to at least solve one of the technical problems existing in the prior art, and to provide an ultra-wideband radiating element that not only has high gain and good beam convergence, but also low cost, and can meet the ultra-wideband matching requirements.

[0005] This application provides an ultra-wideband radiating element, including: A radiating unit includes four orthogonally arranged dipoles and a base. Each dipole includes two radiating arms and an oscillator balun. The base, the oscillator balun, and the radiating arms are integrally formed. The two radiating arms are respectively connected to the base through the oscillator balun. A balun short-circuit structure is provided between the two balun arms of each oscillator balun. The balun short-circuit structure is used to adjust the ultra-wideband matching circle diagram. Each radiating arm is provided with a first coupling branch and a second coupling branch. The first coupling branch is located at the end of the radiating arm connected to the oscillator balun and extends towards the base. The second coupling branch is located at the end of the radiating arm away from the oscillator balun and extends towards the base. Two power feeding components are disposed on the base, each power feeding component being used to power the two dipoles in the same polarization direction.

[0006] According to some embodiments of this application, the ultra-wideband radiating unit further includes a plurality of feed cables, and two dipoles in the same polarization direction are electrically connected to the feed assembly through the two feed cables.

[0007] According to some embodiments of this application, at least one of the balun arms of the oscillator balun is provided with a first cable fixing structure on its surface, and the upper end of the power supply assembly is provided with a second cable fixing structure. One end of each power supply cable is fixedly connected to the balun arm through the first cable fixing structure, and the other end is fixedly connected to the power supply assembly through the second cable fixing structure.

[0008] According to some embodiments of this application, the ultra-wideband radiating element further includes two connecting cables, and the two feeding components are respectively electrically connected to the electrical components of the antenna assembly through the connecting cables.

[0009] According to some embodiments of this application, the power supply assembly includes a power supply plate and a power supply plate fixing member. The front side of the power supply plate is provided with a matching circuit and two front reference grounds of the matching circuit. The back side of the power supply plate is provided with a back reference ground of the matching circuit. Each front reference ground of the matching circuit is connected to the back reference ground of the matching circuit through a corresponding metallized via.

[0010] According to some embodiments of this application, the cable core of the power supply cable and the cable core of the connecting cable are respectively welded to the matching circuit, the shielding layer of the power supply cable is welded to the front reference ground of the matching circuit, and the shielding layer of the connecting cable is welded to the back reference ground of the matching circuit.

[0011] According to some embodiments of this application, the first coupling branch of each of the radiating arms is arranged perpendicular to the radiating arm, and the angle between the second coupling branch and the radiating arm is an acute angle.

[0012] According to some embodiments of this application, the ultra-wideband radiation unit further includes four first fasteners and four second fasteners, each of the first fasteners being disposed between two adjacent first coupling branches, and each of the second fasteners being disposed between two adjacent second coupling branches.

[0013] According to some embodiments of this application, the base is provided with four power supply mounting holes, which are evenly distributed around the center of the base, and the power supply component is provided in two of the power supply mounting holes respectively.

[0014] According to some embodiments of this application, the base is provided with four radiating unit fixing holes, which are evenly distributed around the center of the base. The radiating unit fixing holes are used to fix the radiating unit body to the reflector of the antenna assembly with fasteners.

[0015] An ultra-wideband radiating element provided according to an embodiment of this application has at least the following beneficial effects: First, a radiating element unit is formed by four orthogonally arranged dipoles and a base. The base of this radiating element unit is integrally formed with the dipole's oscillator balun and radiating arms. Furthermore, a balun short-circuit structure is placed between the two balun arms of each oscillator balun, connecting them into a single unit. This not only improves the structural stability of the radiating element but also allows for adjustment of the ultra-wideband matching circle diagram. Second, by incorporating a first coupling stub and a second coupling stub in each radiating arm of the dipole, with the first coupling stub located at the end of the radiating arm connecting to the oscillator balun and extending towards the base, the resonant frequency band at the low-end frequency point is effectively deepened, expanding the low-frequency bandwidth. Moreover, by placing the second coupling stub at the end of the radiating arm away from the oscillator balun and extending towards the base, the length of the dipole's radiating arm is increased, strengthening the coupling between adjacent dipoles. This enhances the radiating arm's ability to induce radiated current and improves radiation efficiency. In addition, by feeding two dipoles in the same polarization direction through the feeding components set on the base, better cross-polarization can be achieved, so that the ultra-wideband radiating unit not only has high gain and good beam convergence, but also low cost, which can meet the ultra-wideband matching requirements.

[0016] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the description, claims and drawings. Attached Figure Description

[0017] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0018] The present application will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is an exploded view of an ultra-wideband radiating element provided in one embodiment of this application; Figure 2 This is a top view schematic diagram of an ultra-wideband radiating element provided in one embodiment of this application; Figure 3 This is a three-dimensional structural schematic diagram of an ultra-wideband radiating unit provided in one embodiment of this application; Figure 4 This is a three-dimensional structural schematic diagram of a radiating unit body provided in one embodiment of this application; Figure 5This is a three-dimensional structural schematic diagram of a power supply component provided in one embodiment of this application; Figure 6 This is a three-dimensional structural schematic diagram of a power supply component provided in another embodiment of this application.

[0019] Reference numerals: Radiating unit 100, dipole 110, first cable fixing structure 101, radiating arm 111, first coupling stub 1111, second coupling stub 1112, oscillator balun 112, balun arm 1121, balun short-circuit structure 1122, base 120, feed mounting hole 121, radiating unit fixing hole 122, feed assembly 200, feed piece 210, matching circuit 211, matching circuit front reference ground 212, matching circuit back reference ground 213, metallized via 214, feed piece fixing member 220, second cable fixing structure 201, feed cable 300, connecting cable 400, first latching member 500, second latching member 600. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0021] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the number itself, while "above," "below," "within," etc. are understood to include the number itself. "Any one" refers to one or more, and "at least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. If the terms "first" and "second" are used only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0022] It should be noted that the terms "setting," "installing," and "connecting" in the embodiments of this application should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of the above terms in the embodiments of this application based on the specific content of the technical solution. For example, the term "connection" can be a mechanical connection, an electrical connection, or a connection that allows for mutual communication; it can be a direct connection or an indirect connection through an intermediate medium.

[0023] It should be noted that the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0024] With the rapid development of communication technology, base station antennas, as a key component of mobile communication systems, directly affect network coverage quality and system capacity through the performance of their radiating elements. Among various radiating element types, the bowl-shaped dipole has been widely used in the field of base station antennas due to its unique structural advantages. The bowl-shaped dipole utilizes the half-wave dipole radiation principle, achieving ±45° dual-polarization radiation through the orthogonal placement of two pairs of half-wave dipoles, effectively improving the coverage efficiency and signal quality of base station antennas.

[0025] However, as mobile communication technology evolves towards 5G and beyond, higher demands are placed on antenna bandwidth, integration, and cost. Related technologies typically employ feed cables with specific impedances through unbalanced parallel feeding for impedance matching, and the electrical length of these feed cables is not an integer multiple of half the wavelength, making them unsuitable for ultra-wideband applications. Furthermore, existing improvement schemes often involve adding extra matching networks or loading elements to extend bandwidth, resulting in complex radiating element structures, increased fabrication difficulty, and higher costs.

[0026] Based on this, the embodiments of this application provide an ultra-wideband radiating element that not only has high gain and good beam convergence, but also low cost, and can meet the ultra-wideband matching requirements.

[0027] The embodiments of this application will be further described below with reference to the accompanying drawings.

[0028] Reference Figures 1 to 6 As shown in the embodiment of this application, an ultra-wideband radiating unit includes a radiating unit body 100 and two feeding components 200. Specifically, the radiating unit 100 includes four orthogonally arranged dipoles 110 and a base 120. Each dipole 110 includes two radiating arms 111 and an oscillator balun 112. The base 120, the oscillator balun 112, and the radiating arms 111 are integrally formed. The two radiating arms 111 are connected to the base 120 through the oscillator balun 112. A balun short-circuit structure 1122 is provided between the two balun arms 1121 of each oscillator balun 112. The balun short-circuit structure 1122 is used to adjust the ultra-wideband matching circle diagram. Each radiating arm 111 is provided with a first coupling branch 1111 and a second coupling branch 1112. The first coupling branch 1111 is located at one end of the radiating arm 111 connected to the oscillator balun 112 and extends toward the base 120. The second coupling branch 1112 is located at one end of the radiating arm 111 away from the oscillator balun 112 and extends toward the base 120. Furthermore, two power feeding components 200 are disposed on the base 120, each power feeding component 200 being used to power two dipoles 110 in the same polarization direction.

[0029] It should be noted that the radiating unit 100 includes four orthogonally arranged dipoles 110 and a base 120. For example... Figure 1 and Figure 2As shown, four dipoles 110 are evenly distributed at 90° intervals around the base 120, forming two pairs of orthogonal dipoles 110, corresponding to +45° and -45° polarization directions respectively. This orthogonal arrangement ensures that the radiation fields of the two pairs of dipoles 110 are spatially orthogonal, thus achieving polarization isolation. Figure 2 In the example, the two radiating arms 111 of each dipole 110 are connected to the base 120 via an oscillator balun 112, and are symmetrically arranged along the diagonal of the oscillator balun 112. The base 120, oscillator balun 112, and radiating arms 111 of the radiating unit 100 are integrally formed. Optionally, the radiating unit 100 can be integrally formed by die-casting aluminum alloy, thereby forming a bowl-shaped radiating structure. The integral forming process simplifies the production process and helps to reduce manufacturing costs. Further, as... Figures 1 to 4 As shown, each oscillator balun 112 includes two parallel balun arms 1121, and a balun short-circuit structure 1122 is provided between the two balun arms 1121. The balun short-circuit structure 1122 can connect the two balun arms 1121 into a whole, thereby improving the structural stability of the ultra-wideband radiation unit.

[0030] like Figure 1 , Figure 3 and Figure 4 As shown, each radiating arm 111 is provided with a first coupling stub 1111 and a second coupling stub 1112. The first coupling stub 1111 is located at one end of the radiating arm 111 that connects to the oscillator balun 112 and extends toward the base 120. Specifically, the end of the radiating arm 111 that connects to the oscillator balun 112 can be the feed position of the radiating arm 111, and thus the first coupling stub 1111 can be formed by bending downward from the feed position of the radiating arm 111. When the radiating unit is miniaturized, the first coupling stub 1111 is beneficial for deepening the resonant frequency band at the low end. At the same time, the second coupling stub 1112 is located at the end of the radiating arm 111 away from the oscillator balun 112 and extends toward the base 120. Specifically, the second coupling stub 1112 can be formed by bending downward from the end of the radiating arm 111 away from the feed position, which is equivalent to lengthening the length of the radiating arm 111, thereby strengthening the coupling between two adjacent dipoles 110 and effectively expanding the bandwidth.

[0031] It is understandable that each feeding component 200 set on the base 120 is used to feed two dipoles 110 in the same polarization direction, that is, one feeding component 200 simultaneously excites two dipoles 110 in the +45° direction, and the other feeding component 200 simultaneously excites two dipoles 110 in the -45° direction, thereby achieving ±45° dual polarization radiation.

[0032] This application provides an ultra-wideband radiating unit, which consists of four orthogonally arranged dipoles 110 and a base 120 forming a radiating unit. The base 120 of the radiating unit is integrally formed with the dipole 110's oscillator balun 112 and radiating arms 111. By setting a balun short-circuit structure 1122 between the two balun arms 1121 of each oscillator balun 112, the two balun arms 1121 of the oscillator balun 112 are connected into a whole, which not only improves the structural stability of the radiating unit but also allows for adjustment of the ultra-wideband matching circle diagram. Furthermore, by setting a first coupling stub 1111 and a second coupling stub 1112 in each radiating arm 111 of the dipole 110, with the first coupling stub 1111 located at the end of the radiating arm 111 connecting to the oscillator balun 112 and extending towards the base 120, the resonant frequency band at the low-end frequency point can be effectively deepened, and the low-frequency bandwidth can be expanded. Furthermore, by placing the second coupling stub 1112 at the end of the radiating arm 111 away from the oscillator balun 112 and extending it towards the base 120, the length of the radiating arm 111 of the dipole 110 is increased, strengthening the coupling between adjacent dipoles 110. This enhances the ability of the radiating arm 111 to induce radiation current and improves radiation efficiency. Additionally, by feeding the two dipoles 110 in the same polarization direction using the feed assembly 200 mounted on the base 120, better cross-polarization can be achieved. This results in an ultra-wideband radiating unit that not only has high gain and good beam convergence but also low cost, meeting the requirements for ultra-wideband matching.

[0033] Reference Figure 1 and Figure 2 In some embodiments of this application, the ultra-wideband radiating element further includes multiple feed cables 300, and two dipoles 110 in the same polarization direction are electrically connected to the feed assembly 200 through two feed cables 300. It should be noted that, as... Figure 2 As shown, two dipoles 110 with the same polarization direction are located on the same diagonal of the radiating unit 100, corresponding to +45° or -45° polarization directions respectively. The two dipoles 110 are fed by the same feeding component 200. Specifically, two feeding cables 300 can be branched off from the same feeding component 200 and connected to the two dipoles 110 respectively, thereby realizing the radio frequency signal transmission between the feeding component 200 and the dipoles 110.

[0034] Reference Figure 2 and Figure 4In some embodiments of this application, at least one balun arm 1121 of the oscillator balun 112 is provided with a first cable fixing structure 101 on its surface, and a second cable fixing structure 201 is provided at the upper end of the power supply assembly 200. One end of each power supply cable 300 is fixedly connected to the balun arm 1121 through the first cable fixing structure 101, and the other end is fixedly connected to the power supply assembly 200 through the second cable fixing structure 201. It can be understood that the first cable fixing structure 101 and the second cable fixing structure 201 together achieve mechanical fixing of both ends of the power supply cable 300. Specifically, as shown... Figure 2 and Figure 4 As shown, the first cable fixing structure 101 can be disposed on the surface of one of the balun arms 1121 of the oscillator balun 112. Optionally, the first cable fixing structure 101 can be a groove integrally formed with the balun arm 1121. Further, as... Figure 2 As shown, the upper end of the power supply assembly 200 is provided with a second cable fixing structure 201. Optionally, the second cable fixing structure 201 may be two cable clips provided at the upper end of the power supply assembly 200 corresponding to two power supply cables 300. The inner diameter of the cable clips is set to match the outer diameter of the power supply cables 300 to ensure the stability of the connection between the power supply cables 300 and the power supply assembly 200.

[0035] Reference Figure 1 and Figure 3 In some embodiments of this application, the ultra-wideband radiating element further includes two connecting cables 400, and the two feed components 200 are electrically connected to the electrical components of the antenna assembly via the connecting cables 400. It should be noted that the two connecting cables 400 correspond to the two feed components 200 respectively, with one end of each connecting cable 400 connected to the lower end of the feed component 200, and the other end extending into the interior of the antenna assembly to connect with the electrical components.

[0036] Reference Figure 5 and Figure 6 In some embodiments of this application, the power supply assembly 200 includes a power supply piece 210 and a power supply piece fixing member 220. The front side of the power supply piece 210 is provided with a matching circuit 211 and two matching circuit front reference grounds 212. The back side of the power supply piece 210 is provided with a matching circuit reverse reference ground 213. Each matching circuit front reference ground 212 is connected to the matching circuit reverse reference ground 213 through a corresponding metallized via 214. It is understood that, as... Figure 5 and Figure 6As shown, the two power supply assemblies 200 mounted on the base 120 each consist of a power supply piece 210 and a power supply piece fixing member 220. The power supply piece 210 can be inserted into the power supply piece fixing member 220, which in turn fixes the power supply piece 210 to the base 120, ensuring a stable and reliable mechanical connection between the power supply piece 210 and the base 120. Furthermore, the matching circuit 211 located on the front of the power supply piece 210 can be used to perform impedance transformation on the radio frequency signal transmitted from the power supply cable 300 to match the input impedance of the dipole 110. In one embodiment, as... Figure 5 As shown, the matching circuit 211 on the front side of the feed sheet 210 can be disposed in the middle region of the feed sheet 210, and then the two front reference grounds 212 of the matching circuits are respectively disposed on both sides of the matching circuit 211 and arranged symmetrically. For example, as... Figure 5 As shown, each matching circuit front reference ground 212 has one or more metallized vias 214, which can be positioned close to the center of the matching circuit front reference ground 212. It should be noted that the metallized via 214 penetrates the entire feed sheet 210 along its thickness direction, and its hole wall is metallized to form a low-impedance electrical connection channel. It is understood that the specific diameter of the metallized via 214 can be flexibly selected according to the operating frequency band and performance requirements; this embodiment does not limit this.

[0037] Furthermore, such as Figure 6 As shown, the reverse reference ground 213 of the matching circuit, located on the back side of the feed sheet 210, covers most of the back side of the feed sheet 210 and corresponds to the position of the front reference ground 212 of the matching circuit of the feed sheet 210. Therefore, the reverse reference ground 213 of the matching circuit can be connected to the front reference ground 212 of the matching circuit through a metallized via 214. In some embodiments, the feed sheet 210 is made of a high-frequency substrate, the matching circuit 211 is a microstrip line structure, and the two front reference grounds 212 and the reverse reference ground 213 of the matching circuit are copper-clad areas. Exemplarily, the high-frequency substrate can be polytetrafluoroethylene (PTFE), perfluoroethylene propylene (FEP), etc. In this embodiment, the feed sheet 210 uses a PTFE substrate.

[0038] In some embodiments of this application, the cable cores of the feed cable 300 and the connecting cable 400 are respectively welded to the matching circuit 211. The shielding layer of the feed cable 300 is welded to the front reference ground 212 of the matching circuit, and the shielding layer of the connecting cable 400 is welded to the back reference ground 213 of the matching circuit. It should be noted that the feed cable 300 and the connecting cable 400 are electrically connected to the matching circuit 211 and the reference ground on the feed plate 210 respectively through welding, effectively reducing signal reflection and energy loss between the cable core and the matching circuit, and ensuring efficient transmission of radio frequency signals. Exemplarily, the cable core of the feed cable 300 is welded to the input pad of the matching circuit 211, and the cable core of the connecting cable 400 is welded to the output pad of the matching circuit 211. The specific pad size can be flexibly selected according to the operating frequency band and performance requirements, and this application does not limit this. In one embodiment, the impedance of the cable cores of the feed cable 300 and the connecting cable 400 is 50 ohms.

[0039] Furthermore, the shielding layer of the feed cable 300 is electrically connected to the front reference ground 212 of the matching circuit on the front side of the feed piece 210 by welding. It is understood that the front reference ground 212 of the matching circuit is located on the front side of the feed piece 210, on the same layer as the matching circuit 211. After the shielding layer of the feed cable 300 is welded to this front reference ground 212, a low-impedance grounding loop is formed, which helps reduce electromagnetic radiation in the feed channel. Simultaneously, the shielding layer of the connecting cable 400 is electrically connected to the back reference ground 213 of the matching circuit on the back side of the feed piece 210 by welding. It should be understood that the grounding loop formed by welding the shielding layer of the connecting cable 400 to the back reference ground 213 of the matching circuit is independent of the grounding loop of the feed channel of the radiating unit 100, effectively reducing signal crosstalk and grounding noise.

[0040] Reference Figure 1 , Figure 3 and Figure 4In some embodiments of this application, the first coupling branch 1111 of each radiating arm 111 is arranged perpendicularly to the radiating arm 111, and the second coupling branch 1112 forms an acute angle with the radiating arm 111. It is understood that the first coupling branch 1111 is located at the end of the radiating arm 111 connecting to the oscillator balun 112, its extension direction is perpendicular to the length direction of the main body of the radiating arm 111, and it bends downwards towards the base 120, thus deepening the resonant frequency band at the low-end frequency point, which is beneficial for expanding the bandwidth. Simultaneously, the second coupling branch 1112 is located at the end of the radiating arm 111 away from the oscillator balun 112, its extension direction forms an acute angle with the length direction of the main body of the radiating arm 111, and it bends obliquely downwards towards the base 120, strengthening the coupling between two adjacent dipoles 110 and lengthening the radiating arm 111, which is beneficial for enhancing the ability of the radiating arm 111 to induce radiated current, thereby improving radiation efficiency. It should be understood that the specific angle between the second coupling branch 1112 and the radiating arm 111 can be optimized according to the operating frequency band and coupling strength requirements, and this application embodiment does not limit this.

[0041] Reference Figures 1 to 3 In some embodiments of this application, the ultra-wideband radiating element further includes four first fastening members 500 and four second fastening members 600. Each first fastening member 500 is disposed between two adjacent first coupling branches 1111, and each second fastening member 600 is disposed between two adjacent second coupling branches 1112. It should be noted that, as... Figure 1 As shown, each dipole 110 has two radiating arms 111 each with a first coupling branch 1111. There is a gap between two adjacent first coupling branches 1111. A first locking member 500 is positioned at this gap and engages with the first coupling branches 1111 on both sides to achieve a secure fastening. Further, as... Figure 1 As shown, there is a gap between the two radiating arms 111 of the two dipoles 110. A second latching member 600 is positioned at the gap between the two second coupling stubs 1112 of adjacent radiating arms 111, and the second latching member 600 engages with the second coupling stubs 1112 on both sides to achieve a secure fastening. In one embodiment, the first latching member 500 and the second latching member 600 can be made of low dielectric loss, high-temperature resistant materials to reduce the dielectric loss of radio frequency signals in the coupling stub region. Exemplarily, low dielectric loss, high-temperature resistant materials may include polytetrafluoroethylene (PTFE), liquid crystal polymer (LCP), etc.

[0042] Reference Figures 1 to 4In some embodiments of this application, the base 120 is provided with four power supply mounting holes 121, which are evenly distributed around the center of the base 120. Two power supply mounting holes 121 are respectively provided with power supply components 200. It can be understood that the base 120 of the radiating unit 100 is provided with four power supply mounting holes 121 for positioning and installing the power supply components 200. For example, as... Figure 3 and Figure 4 As shown, the four power supply mounting holes 121 are through holes penetrating the base 120, and can be formed simultaneously during the integral molding of the radiating unit 100. The diameter and shape of the four power supply mounting holes 121 are adapted to the external dimensions of the power supply assembly 200, or can be adjusted according to actual design requirements. This application embodiment does not limit this. Further, as Figure 2 As shown, the four power supply mounting holes 121 are evenly distributed at 90° intervals around the geometric center of the base 120, and the four power supply mounting holes 121 correspond one-to-one with the four oscillator baluns 112. For example, the four power supply mounting holes 121 can be set near the connection position between each oscillator balun 112 and the base 120.

[0043] It should be noted that, when used in different antenna assembly environments, two of the four feed mounting holes 121 can be selected to be respectively provided with feed components 200. For example, as shown... Figure 1 and Figure 2 As shown, each feed assembly 200 is inserted into the feed mounting hole 121 from the upper side of the base 120 and is fixedly connected to the base 120 through the feed plate fixing member 220, so that the front reference ground and the back reference ground 213 of the matching circuit of the feed assembly 200 are electrically isolated from the radiating unit body 100. This not only makes the matching of the ultra-wideband radiating unit more flexible, but also improves the isolation between the two ±45° polarization ports, thereby giving the ultra-wideband radiating unit a higher cross polarization ratio.

[0044] Reference Figure 3 In some embodiments of this application, the base 120 is provided with four radiating element fixing holes 122, which are evenly distributed around the center of the base 120. The radiating element fixing holes 122 are used to cooperate with fasteners to fix the radiating element body 100 to the reflector of the antenna assembly. It is understood that, as... Figure 3 As shown, the four radiating element fixing holes 122 are evenly distributed at 90° intervals around the geometric center of the base 120, and each of the four radiating element fixing holes 122 corresponds one-to-one with one of the four oscillator baluns 112. For example, as... Figure 3As shown, the four radiating element fixing holes 122 can be four blind holes opened on the lower side of the base 120. When fasteners are used to fasten the radiating element body 100 to the reflector of the antenna assembly, metal debris generated by friction or cutting will be confined in the cavity inside the blind hole, preventing metal debris from falling into the conductive contact area between the radiating element body 100 and the reflector, thereby enabling the ultra-wideband radiating element to obtain better passive intermodulation performance.

[0045] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. An ultra-wideband radiating element, characterized in that, include: A radiating unit includes four orthogonally arranged dipoles and a base. Each dipole includes two radiating arms and an oscillator balun. The base, the oscillator balun, and the radiating arms are integrally formed. The two radiating arms are respectively connected to the base through the oscillator balun. A balun short-circuit structure is provided between the two balun arms of each oscillator balun. The balun short-circuit structure is used to adjust the ultra-wideband matching circle diagram. Each radiating arm is provided with a first coupling branch and a second coupling branch. The first coupling branch is located at the end of the radiating arm connected to the oscillator balun and extends towards the base. The second coupling branch is located at the end of the radiating arm away from the oscillator balun and extends towards the base. Two power feeding components are disposed on the base, each power feeding component being used to power the two dipoles in the same polarization direction.

2. The ultra-wideband radiating unit according to claim 1, characterized in that, The ultra-wideband radiating unit also includes multiple feed cables, and the two dipoles in the same polarization direction are electrically connected to the feed assembly through the two feed cables.

3. The ultra-wideband radiating unit according to claim 2, characterized in that, At least one of the balun arms of the oscillator balun is provided with a first cable fixing structure on its surface, and the upper end of the power supply assembly is provided with a second cable fixing structure. One end of each power supply cable is fixedly connected to the balun arm through the first cable fixing structure, and the other end is fixedly connected to the power supply assembly through the second cable fixing structure.

4. The ultra-wideband radiating unit according to claim 3, characterized in that, The ultra-wideband radiating unit also includes two connecting cables, and the two feeding components are electrically connected to the electrical components of the antenna assembly through the connecting cables.

5. The ultra-wideband radiating unit according to claim 4, characterized in that, The power supply assembly includes a power supply plate and a power supply plate fixing component. The front side of the power supply plate is provided with a matching circuit and two front reference grounds of the matching circuit. The back side of the power supply plate is provided with a back reference ground of the matching circuit. Each front reference ground of the matching circuit is connected to the back reference ground of the matching circuit through a corresponding metallized via.

6. The ultra-wideband radiating unit according to claim 5, characterized in that, The cable core of the power supply cable and the cable core of the connecting cable are respectively welded to the matching circuit. The shielding layer of the power supply cable is welded to the front reference ground of the matching circuit, and the shielding layer of the connecting cable is welded to the back reference ground of the matching circuit.

7. The ultra-wideband radiating unit according to claim 1, characterized in that, The first coupling branch of each of the radiating arms is arranged perpendicular to the radiating arm, and the second coupling branch forms an acute angle with the radiating arm.

8. The ultra-wideband radiating unit according to claim 7, characterized in that, The ultra-wideband radiation unit further includes four first fasteners and four second fasteners, with each first fastener disposed between two adjacent first coupling branches and each second fastener disposed between two adjacent second coupling branches.

9. The ultra-wideband radiating unit according to claim 1, characterized in that, The base is provided with four power supply mounting holes, which are evenly distributed around the center of the base, and the power supply component is provided in two of the power supply mounting holes respectively.

10. The ultra-wideband radiating element according to claim 1, characterized in that, The base is provided with four radiating unit fixing holes, which are evenly distributed around the center of the base. The radiating unit fixing holes are used to fix the radiating unit to the reflector of the antenna assembly with fasteners.

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