Ultra-wideband radiation unit and base station antenna

Abstract

The invention provides an ultra-wideband radiation unit and a base station antenna, and relates to the technical field of antennae, and the ultra-wideband radiation unit comprises a radiation main body; the feed part is used for feeding the radiation main body, the feed part is arranged in the radiation main body, and the feed part is in coupling connection with the radiation main body; and the at least two guiding pieces are arranged on the outer side of the radiation main body. According to the ultra-wideband radiation unit and the base station antenna provided by the invention, the problem that the use performance of the radiation unit in the ultra-wideband is relatively poor in the prior art is solved.

Description

Technical Field

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

[0002] The radiating element is the core functional component of a base station antenna. Its function is to convert the incoming high-frequency electrical signal into spatial electromagnetic waves, or to convert spatial electromagnetic waves into high-frequency electrical signals. It is a key carrier for realizing wireless signal radiation and reception.

[0003] In related technologies, the radiating element mainly adopts a narrow-band design. Its structure usually consists of a single radiating arm, a feeding structure, and a fixed matching network, which can achieve good radiation performance within a single narrow frequency band.

[0004] However, when the frequency band is extended to the ultra-wideband range (such as an absolute bandwidth greater than 500MHz or a signal bandwidth to center frequency ratio greater than 0.2), the performance of the edge frequency points will decrease significantly, resulting in poor performance of the radiating element in the ultra-wideband range. Summary of the Invention

[0005] This application provides an ultra-wideband radiating element and a base station antenna to solve the problem of poor performance of radiating elements in the ultra-wideband range in related technologies.

[0006] On the one hand, this application provides an ultra-wideband radiating element, comprising:

[0007] Radiation source;

[0008] A power supply component, which is used to power the radiating body, is disposed inside the radiating body and is coupled to the radiating body;

[0009] At least two guide elements are provided on the outside of the radiating body.

[0010] In one possible implementation, the radiating body includes a balun and a plurality of radiating arms, the radiating arms being connected to one end of the balun in the direction of extension, and the plurality of radiating arms being evenly spaced around the axis of the balun.

[0011] The radiating body has an installation channel that passes through the balun and each of the radiating arms along the axial direction of the balun. The power supply component is inserted into the installation channel, and the balun and each of the radiating arms are coupled to the power supply component.

[0012] In one possible implementation, the two radiating arms form a radiating arm group, and two radiating arm groups are provided, which are interspersed and have a 90° rotational symmetry structure.

[0013] In one possible implementation, the power supply element includes a first power supply plate and a second power supply plate that are cross-distributed, the first power supply plate being coupled to two of the two radiating arms in one of the groups of radiating arms, and the second power supply plate being coupled to two of the two radiating arms in another group of radiating arms.

[0014] In one possible implementation, both the balun and the radiating arm are spaced apart from the feeder.

[0015] And / or, the radial arm is provided with parasitic branches, the parasitic branches are located on the side of the radial arm facing the balun, and the extension direction of the parasitic branches is parallel to the extension direction of the balun.

[0016] In one possible implementation, at least one of the guide elements is a first guide piece, which is spaced over the side of the radiating arm opposite to the balun.

[0017] In one possible implementation, at least one of the guide elements is a second guide piece, which is spaced over the side of the first guide piece opposite to the radiating arm.

[0018] In one possible implementation, at least one of the guide elements is a guide ring, which is arranged around the periphery of the balun and spaced apart from the balun.

[0019] In one possible implementation, the surface of the guide ring is provided with an annular gap, and the annular gap is coaxially arranged with the guide ring.

[0020] On the other hand, the base station antenna provided in this application includes the ultra-wideband radiating element described in any of the above embodiments.

[0021] This application provides an ultra-wideband radiating element and a base station antenna. The ultra-wideband radiating element comprises: a radiating body; a feed element for powering the radiating body, the feed element being disposed inside the radiating body and coupled to it; and at least two guide elements disposed outside the radiating body. Thus, in use, the feed element couples to power the radiating body, thereby improving the impedance matching of the radiating element and widening its bandwidth. Furthermore, the guide elements maintain stable radiation performance, further improving impedance matching and widening the bandwidth, thereby optimizing the performance of the radiating element in ultra-wideband (e.g., absolute bandwidth greater than 500MHz or signal bandwidth to center frequency ratio greater than 0.2), solving the problem of poor performance of radiating elements in ultra-wideband applications in related technologies. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0023] Figure 1 This is a schematic diagram of the structure of an ultra-wideband radiating unit provided in an embodiment of this application;

[0024] Figure 2 for Figure 1 A partial cross-sectional view of the central radiating body;

[0025] Figure 3 for Figure 2 Schematic diagram of the center feeder component;

[0026] Figure 4 A voltage standing wave ratio (VSWR) curve of an ultra-wideband radiating element provided in this application embodiment;

[0027] Figure 5 The S-parameter curve of an ultra-wideband radiating element provided in this application embodiment.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100 - Radiation body; 110 - Balun; 120 - Radiation arm assembly; 121 - Radiation arm;

[0030] 200 - Feeding component; 210 - First feeding piece; 211 - Feeding arm; 220 - Second feeding piece; 230 - Connector;

[0031] 300 - Guide element; 310 - First guide piece; 320 - Second guide piece; 330 - Guide ring; 331 - Annular gap;

[0032] 400 - Installation channel; 410 - First sub-channel; 420 - Second sub-channel;

[0033] 500 - Connecting base;

[0034] 600-parasitic branch.

[0035] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0036] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0037] In related technologies, the radiating element is the core functional component of a base station antenna. It is usually mounted on a reflector and its function is to convert the incoming high-frequency electrical signal into spatial electromagnetic waves, or to convert spatial electromagnetic waves into high-frequency electrical signals. It is a key carrier for realizing wireless signal radiation and reception.

[0038] The radiating element mainly adopts a narrow-band design. Its structure usually consists of a single radiating arm, a feeding structure, and a fixed matching network, which can achieve good radiation performance within a single narrow frequency band.

[0039] However, when the frequency band is extended to the ultra-wideband range (such as an absolute bandwidth greater than 500MHz or a signal bandwidth to center frequency ratio greater than 0.2), the performance of the edge frequency points will degrade significantly. For example, impedance matching and radiation efficiency will decrease, resulting in poor performance of the radiating element in the ultra-wideband range.

[0040] Based on this, this application provides an ultra-wideband radiating element and a base station antenna. The ultra-wideband radiating element includes: a radiating body; a feed element for feeding the radiating body, the feed element being disposed inside the radiating body and coupled to the radiating body; and at least two guide elements disposed outside the radiating body. Thus, in use, by coupling the feed element to the radiating body, the impedance matching of the radiating element can be improved, and the bandwidth of the radiating element can be widened. Secondly, by maintaining stable radiation performance of the radiating element through each guide element, the impedance matching of the radiating element can be further improved, and the bandwidth of the radiating element can be widened. This optimizes the performance of the radiating element in ultra-wideband (e.g., absolute bandwidth greater than 500MHz or signal bandwidth to center frequency ratio greater than 0.2), solving the problem of poor performance of radiating elements in ultra-wideband in related technologies.

[0041] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0042] like Figure 1 As shown in the figure, an ultra-wideband radiating element provided in this application includes:

[0043] Radiation source 100;

[0044] The power supply component 200 is used to supply power to the radiating body 100. The power supply component 200 is disposed inside the radiating body 100 and is coupled to the radiating body 100.

[0045] At least two guide elements 300 are provided on the outside of the radiating body 100.

[0046] It should be noted that, during implementation, the radiating body 100 or the feeder 200 can be connected to the reflector in the antenna, thereby mounting the entire ultra-wideband radiating unit on the reflector; of course, the entire ultra-wideband radiating unit can also be mounted on other structures according to actual needs, and there are no restrictions on this.

[0047] The power supply component 200 is used to receive electrical signals to couple power to the radiating body 100. The guide component 300 can be made of conductive materials such as copper or aluminum, and is spaced around the outside of the radiating body 100.

[0048] Therefore, during use, the radiating element 100 is coupled and fed through the power supply component 200, thereby improving the impedance matching of the radiating element and widening its bandwidth. Secondly, the stable radiation performance of the radiating element is maintained by each guide component 300, further improving the impedance matching and widening its bandwidth. This optimizes the performance of the radiating element in ultra-wideband applications (e.g., absolute bandwidth greater than 500MHz or a signal bandwidth to center frequency ratio greater than 0.2), solving the problem of poor performance of radiating elements in ultra-wideband applications in related technologies.

[0049] like Figure 1 As shown, in some embodiments, the radiation body 100 includes a balun 110 and a plurality of radiation arms 121, the radiation arms 121 being connected to one end of the balun 110 in the extending direction, and the plurality of radiation arms 121 being evenly spaced around the axis of the balun 110.

[0050] The radiating body 100 has an installation channel 400. The installation channel 400 passes through the balun 110 and each radiating arm 121 along the axial direction of the balun 110. The power supply component 200 is inserted in the installation channel 400. The balun 110 and each radiating arm 121 are coupled to the power supply component 200.

[0051] In this embodiment, the balun 110 is a quadrangular prism structure, and the radial arms 121 are connected to one end of the balun 110 in the extending direction. There are four radial arms 121, and they are square in structure. Specifically, two radial arms 121 form a radial arm group 120, and two groups of radial arm groups 120 are provided. The two radial arm groups 120 are distributed crosswise and have a 90° rotational symmetry structure.

[0052] In other words, the four radiating arms 121 are arranged in a uniformly spaced circular array around the axis of the balun 110, with each of the four radiating arms 121 corresponding to one of the four corners of the balun 110. Two diagonally distributed radiating arms 121 then form a radiating arm group 120, resulting in two radiating arm groups 120. These two radiating arm groups 120 are intersected and exhibit 90° rotational symmetry, thus forming a 90° rotationally symmetric closed body. The balun 110 and the radiating arms 121 can be made of conductive materials such as copper or aluminum.

[0053] The radiating body 100 has an installation channel 400 that passes through the balun 110 and each radiating arm 121 along the axial direction of the balun 110. The installation channel 400 may include a first sub-channel 410 formed on the balun 110 and a second sub-channel 420 formed at the corner of the radiating arm 121. The first sub-channel 410 and the second sub-channel 420 are interconnected to form the entire installation channel 400.

[0054] In this embodiment, each of the four radiating arms 121 has a second sub-channel 420 at its corner facing the first sub-channel 410. The second sub-channel 420 can be circular, arc-shaped, square, or other shapes, and there are no restrictions on this.

[0055] Based on this, the power supply component 200 is inserted into the installation channel 400. Specifically, the power supply component 200 is located in the second sub-channel 420, and the balun 110 and the radiating arm 121 are both spaced apart from the power supply component 200.

[0056] Therefore, the feeder 200 can couple and feed each radiating arm 121 and balun 110 within the mounting channel 400, thereby improving the impedance matching of the radiating element and widening its bandwidth. Furthermore, the feeder 200 forms a coupling structure with the radiating arm 121 through a gap, facilitating dynamic adjustment of the electromagnetic coupling strength between the feed point and the radiating arm 121. Simultaneously, this gap coupling design can dynamically compensate for impedance imbalance at edge frequencies, avoiding the bandwidth limitations of traditional direct feeding.

[0057] Furthermore, the gaps between adjacent radiating arms 121 can form coupling gaps, which can enhance signal transmission efficiency through dynamic interaction of electromagnetic fields. The arrangement of the radiating arms 121 with a 90° rotational symmetry structure can enhance the uniform distribution of current paths through geometric symmetry, reducing phase mismatch in the high-frequency band.

[0058] In practice, the radiating arm 121 can be connected to the balun 110 by welding, bonding, integral molding, or other methods. Preferably, the radiating arm 121 and the balun 110 can be die-cast integrally, thereby enabling the radiating body 100 to form a stable current path and optimize the use effect; and making the overall structure of the radiating body 100 simple, easy to mold and mass-produce.

[0059] In practice, the end of the power supply component 200 away from the radiation arm 121 can extend from the end of the balun 110 away from the radiation arm 121. At this time, as... Figure 1 and Figure 2 As shown, a connecting base 500 can also be installed at the end of the balun 110 away from the radiating arm 121 by welding, plugging, bonding, or other means. In this case, the entire ultra-wideband radiating unit can also be fixed to the reflector plate via the connecting base 500. During implementation, the connecting base 500 can be made of the required material, such as insulating or conductive material, according to actual needs.

[0060] In other embodiments, the radiating body 100 may also include other numbers of radiating arms 121, such as one, two, eight, etc. Furthermore, the radiating arms 121 may also adopt other similar structures, such as hollowed-out or perforated radiating arms 121; other shapes of radiating arms 121, such as rhombus, semicircle, strip, rectangle, etc.; the size of radiating arms 121 may also be slightly changed, such as thickening or thickening.

[0061] In some embodiments, such as Figure 2 and Figure 3 As shown, the power supply component 200 includes a first power supply piece 210 and a second power supply piece 220 that are distributed in a cross pattern. The first power supply piece 210 is coupled to two radiating arms 121 in one of the radiating arm groups 120, and the second power supply piece 220 is coupled to two radiating arms 121 in another radiating arm group 120.

[0062] In this embodiment, both the first feed plate 210 and the second feed plate 220 are configured with an inverted U-shaped structure, such that each of the first feed plate 210 and the second feed plate 220 has two parallel feed arms 211, and the length of one of the feed arms 211 is greater than the length of the other feed arm 211. The longer feed arm 211 is used to extend from the end of the balun 110 away from the radiation arm 121 for feeding. The first feed plate 210 and the second feed plate 220 can each be two orthogonally polarized dipole feed plates, and can be made of conductive materials such as copper, silver, or aluminum.

[0063] Specifically, the first feed plate 210 and the second feed plate 220 are both inserted in the installation channel 400. The first feed plate 210 and the second feed plate 220 are distributed in a cross manner, so that the first feed plate 210 is coupled to two radiating arms 121 in one of the radiating arm groups 120, and the second feed plate 220 is coupled to two radiating arms 121 in another radiating arm group 120.

[0064] Understandably, the first feed plate 210 and the second feed plate 220 are respectively arranged along the diagonal of the two radiation arms 121 in the radiation arm group 120, so that the first feed plate 210 and the second feed plate 220 are perpendicular to each other, which is equivalent to the cross-shaped feed component 200.

[0065] Secondly, the two feed arms 211 in the first feed plate 210 and the second feed plate 220 are respectively inserted into the second sub-channel 420 on the two radiating arms 121 in the same group, and the balun 110 and the radiating arm 121 are spaced apart from the feed arm 211.

[0066] It should be noted that the intersection of the first feed plate 210 and the second feed plate 220 avoids each other. For example, one of them protrudes upward at the intersection and the other is recessed downward at the intersection, so that the two do not come into contact.

[0067] Therefore, during implementation, the radiation arms 121 in the two sets of radiation arm groups 120 can be coupled and fed by the cross-shaped feeding device 200 (such as the first feeding piece 210 and the second feeding piece 220), which can optimize the radiation symmetry.

[0068] During implementation, the mounting channel 400 can also be set to a corresponding cross-shaped profile based on the cross-shaped power supply component 200.

[0069] In practice, of the first feed plate 210 and the second feed plate 220, the longer feed arm 211, the end furthest from the radiation arm 121, can both extend from the end of the balun 110 furthest from the radiation arm 121. At this time, as... Figure 2 and Figure 3 As shown, a connector 230 can be fixed to the end of the balun 110 away from the radiating arm 121 (and corresponding to the second sub-channel 420) by bonding, welding or other means. The connector 230 can be circular, square or other shapes, and the connector 230 is made of insulating materials such as polytetrafluoroethylene or epoxy resin. At this time, the longer feed arm 211 passes through the connector 230, and the other shorter feed arm 211 is located in the second sub-channel 420.

[0070] The first feed plate 210 or the second feed plate 220 can be supported by the connector 230 to ensure the stability of the installation of the first feed plate 210 and the second feed plate 220.

[0071] In other embodiments, the power supply element 200 may also be configured in other shapes, such as configuring the first power supply piece 210 or the second power supply piece 220 as a U-shaped structure with the opening facing upward.

[0072] In some embodiments, such as Figure 1As shown, a parasitic branch 600 is provided on the radial arm 121. The parasitic branch 600 is located on the side of the radial arm 121 facing the balun 110, and the extension direction of the parasitic branch 600 is parallel to the extension direction of the balun 110.

[0073] In this embodiment, the balun 110 can be set vertically, while the radiating arm 121 can be set horizontally at the upper end of the balun 110.

[0074] At this time, a parasitic branch 600 is provided on the end of the radiating arm 121 (i.e. the end of the radiating arm 121 away from the feeder 200). The parasitic branch 600 is located on the side of the radiating arm 121 facing the balun 110, and the extension direction of the parasitic branch 600 is parallel to the extension direction of the balun 110 (equivalent to the parasitic branch 600 extending downward).

[0075] Therefore, the current path on the radiating arm 121 can be extended by the parasitic branch 600, which can further improve the impedance matching of the radiating element and broaden the operating bandwidth of the radiating element.

[0076] In practice, the parasitic branch 600 can be connected to the radiating arm 121 by integral molding, welding, bonding or other means.

[0077] In other embodiments, the parasitic branch 600 can also take various cylindrical shapes, such as circular, conical, polygonal, etc. Furthermore, the height of the parasitic branch 600 is not limited; that is, the height of the parasitic branch 600 can be set to a suitable size according to actual needs.

[0078] In some embodiments, such as Figure 1 As shown, at least one guide element 300 is a first guide piece 310, which is spaced over the side of the radiating arm 121 opposite to the balun 110.

[0079] In this embodiment, the first guide piece 310 is circular, the plane of the first guide piece 310 is parallel to the plane of the radiating arm 121, and the first guide piece 310 covers the side of the radiating arm 121 away from the balun 110 at intervals.

[0080] Therefore, the radiation pattern can be optimized by the first guide piece 310 (based on specific materials and shape settings), the mutual coupling effect between adjacent radiating elements can be reduced, the stable radiation performance of the radiating elements can be maintained, and the impedance matching of the radiating elements can be further improved, thereby widening the bandwidth of the radiating elements.

[0081] In implementation, a bracket made of insulating material (such as plastic) can be used to support the first guide piece 310, thereby ensuring the stability of the first guide piece 310 installation. There are no restrictions on the specific shape and structure of the bracket. For example, one end of the bracket can be connected to the radiation arm 121 by adhesive or other means, and the first guide piece 310 can be installed on the bracket by adhesive, snap-fit ​​or other means.

[0082] In some embodiments, such as Figure 1 As shown, at least one guide element 300 is a second guide piece 320, which covers the side of the first guide piece 310 away from the radiation arm 121 at intervals.

[0083] In this embodiment, the second guide piece 320 is also circular and coaxially spaced over the side of the first guide piece 310 opposite to the radiating arm 121. Furthermore, the diameter of the second guide piece 320 is smaller than the diameter of the first guide piece 310.

[0084] Therefore, the radiation pattern can be further optimized by the second guide plate 320, reducing the mutual coupling effect between adjacent radiating elements, maintaining the stable radiation performance of the radiating elements, and helping to broaden the bandwidth of the radiating elements.

[0085] Similarly, the second guide piece 320 can be supported using the same bracket as described above to ensure its stable installation.

[0086] In some embodiments, such as Figure 1 As shown, at least one guide member 300 is a guide ring 330, which is arranged around the periphery of the balun 110 and is spaced apart from the balun 110.

[0087] In this embodiment, the guide ring 330 is coaxially wound around the balun 110, and the guide ring 330 and the balun 110 are spaced apart. This ensures that the guide ring 330 can also maintain the stable radiation performance of the radiation element.

[0088] In practice, an annular groove can be opened on the upper surface of the guide ring 330 to form an annular gap 331, which is coaxially arranged with the guide ring 330.

[0089] Therefore, by using the guide ring 330 and the annular gap 331, a selective electromagnetic response can be formed in a specific frequency domain while maintaining stable circuit performance, thereby further improving the impedance matching of the radiating element and widening the bandwidth of the radiating element.

[0090] Similarly, the guide ring 330 can be supported using the same bracket as described above to ensure its stable installation.

[0091] In other embodiments, at least two guide elements 300 may also include other numbers of first guide pieces 310, second guide pieces 320 and guide rings 330, such as two, three, etc.

[0092] It should be noted that the first guide piece 310, the second guide piece 320, and the guide ring 330 can all be made of metals such as copper and aluminum, or they can be made of copper-clad PCB board or other metal-containing materials. The shape of the first guide piece 310 and the second guide piece 320 is not limited to a circle; they can also be annular, square, etc. Of course, gaps can also be made on the surface of the first guide piece 310 and / or the second guide piece 320 according to actual needs.

[0093] Through simulation analysis, such as Figure 4 The figure shows the voltage standing wave ratio (VSWR) curve of this ultra-wideband radiating element. It can be seen that the operating frequency band is wide, covering 1.4GHz-2.7GHz, with an absolute bandwidth greater than 500MHz, which is ultra-wideband. Furthermore, the VSWR is generally controlled at a low level within this frequency band (close to 1.0 in most areas, and not exceeding 2.0 at its highest), indicating that the radiating element has good impedance matching performance and low signal reflection loss over a wide frequency range.

[0094] like Figure 5 The figure shows the S-parameter curve (S21) of this ultra-wideband radiating element. It can be seen that the operating frequency band is wide, covering the frequency band from 1.4GHz to 2.7GHz. The S21 (port reflection coefficient) remains below -30dB throughout the entire frequency band (even below -35dB in most areas), which indicates that there is very little signal reflection, the impedance matching effect between the radiating element and the system is very good, and the energy transmission efficiency is high.

[0095] In summary, the ultra-wideband radiating unit provided in this embodiment improves impedance matching and broadens bandwidth by coupling power to the radiating body 100 through the power supply component 200. Furthermore, the stable radiation performance of the radiating unit is maintained by each director 300, further improving impedance matching and broadening bandwidth. This optimizes the performance of the radiating unit in the ultra-wideband range, solving the problem of poor performance in this range in related technologies, and also addressing the signal loss issue caused by insufficient bandwidth.

[0096] Furthermore, it can solve the problem of insufficient antenna coverage and limited rooftop space due to complex multi-band networking, greatly simplifying rooftop space requirements. It can control electromagnetic waves over a very wide frequency band, solving multi-band coverage issues and enabling unified frequency band management and coordination, making it one of the current site evolution methods. It addresses the traditional narrowband, single-function base station antenna unit design, evolving towards ultra-wideband, multi-frequency integration without increasing the complexity of radiating element design and manufacturing. This represents not only an improvement in antenna unit and base station antenna-related technologies but also a crucial step towards a more efficient, economical, and greener future for the entire mobile network infrastructure.

[0097] This application provides a base station antenna, including the ultra-wideband radiating element in any of the above embodiments.

[0098] The ultra-wideband radiating element has been described in detail in the above embodiments and will not be repeated here.

[0099] It should be noted that base station antennas may also include existing structures such as reflectors and phase shifter assemblies, and there are no restrictions on this.

[0100] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. An ultra-wideband radiating element, characterized in that, include: Radiation subject (100); A power supply component (200) is provided for powering the radiating body (100). The power supply component (200) is disposed inside the radiating body (100) and is coupled to the radiating body (100). At least two guide elements (300) are disposed on the outside of the radiating body (100).

2. The ultra-wideband radiating unit according to claim 1, characterized in that, The radiation body (100) includes a balun (110) and a plurality of radiation arms (121), the radiation arms (121) being connected to one end of the balun (110) in the direction of extension, and the plurality of radiation arms (121) being evenly spaced around the axis of the balun (110); The radiating body (100) has an installation channel (400) that passes through the balun (110) and each of the radiating arms (121) along the axial direction of the balun (110). The power supply component (200) is inserted into the installation channel (400). The balun (110) and each of the radiating arms (121) are coupled to the power supply component (200).

3. The ultra-wideband radiating unit according to claim 2, characterized in that, The two said radiating arms (121) form a radiating arm group (120), and two radiating arm groups (120) are provided. The two radiating arm groups (120) are distributed crosswise and have a 90° rotational symmetry structure.

4. The ultra-wideband radiating unit according to claim 3, characterized in that, The power supply element (200) includes a first power supply piece (210) and a second power supply piece (220) that are distributed in a cross pattern. The first power supply piece (210) is coupled to two of the two radiating arms (121) in one of the groups of radiating arms (120), and the second power supply piece (220) is coupled to two of the two radiating arms (121) in another group of radiating arms (120).

5. The ultra-wideband radiating unit according to claim 2, characterized in that, The balun (110) and the radiating arm (121) are both spaced apart from the feeder (200); And / or, the radial arm (121) is provided with a parasitic branch (600), the parasitic branch (600) is located on the side of the radial arm (121) facing the balun (110), and the extension direction of the parasitic branch (600) is parallel to the extension direction of the balun (110).

6. The ultra-wideband radiating element according to any one of claims 2-5, characterized in that, At least one of the guides (300) is a first guide piece (310) that covers the side of the radiating arm (121) away from the balun (110) at intervals.

7. The ultra-wideband radiating unit according to claim 6, characterized in that, At least one of the guides (300) is a second guide piece (320) that is spaced over the side of the first guide piece (310) away from the radiating arm (121).

8. The ultra-wideband radiating element according to any one of claims 2-5, characterized in that, At least one of the guide members (300) is a guide ring (330) which is arranged around the periphery of the balun (110) and is spaced apart from the balun (110).

9. The ultra-wideband radiating unit according to claim 8, characterized in that, The surface of the guide ring (330) is provided with an annular gap (331), and the annular gap (331) is coaxially arranged with the guide ring (330).

10. A base station antenna, characterized in that, Includes the ultra-wideband radiating unit as described in any one of claims 1-9.

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