Radiating elements and base station antennas

Abstract

The present disclosure relates to a radiating element, the dipole arm of which comprises a first conductive loop and a second conductive loop, wherein the first conductive loop comprises at least one narrow conductive section and at least one wide conductive section, the narrow conductive section presenting a high impedance characteristic within at least one frequency band outside the operating frequency band of the radiating element, so as to at least partially suppress current within the at least one frequency band. Furthermore, the present disclosure also relates to a base station antenna comprising a feed plate and a radiating element according to the present disclosure mounted on the feed plate.

Description

Technical Field

[0001] This disclosure generally relates to radio communications, and more specifically, to a radiating element and a base station antenna for a cellular communication system. Background Technology

[0002] Cellular communication systems are well known in the art. In a cellular communication system, a geographical area is divided into a series of regions, which are referred to as “cells” served by various base stations. A base station may include one or more base station antennas configured to provide bidirectional radio frequency (“RF”) communication with mobile subscribers within the cell served by the base station.

[0003] In many cases, each base station is divided into "sectors". In the most common configuration, a hexagonal cell is divided into three 120° sectors, each served by one or more base station antennas with an azimuth half-power beamwidth (HPBW) of approximately 65°. Typically, base station antennas are mounted on a tower structure, with the radiation pattern (also referred to here as the "antenna beam") generated by the base station antenna pointing outwards. Base station antennas are typically implemented as linear or planar phased arrays of radiating elements.

[0004] To accommodate the increasing volume of cellular traffic, cellular operators have added cellular services in various new frequency bands. While in some cases it is possible to use linear arrays of so-called “broadband” or “ultra-broadband” radiating elements to provide services in multiple frequency bands, in other cases, linear arrays or planar arrays of different radiating elements are required to support services in different frequency bands.

[0005] As the number of frequency bands increases, sectoration becomes increasingly common (e.g., dividing a cell into six, nine, or even twelve sectors), and the number of base station antennas deployed at a typical base station increases significantly. However, due to local zoning regulations and / or antenna tower weight and wind load limitations, there are often limitations on the number of base station antennas that can be deployed at a given base station. To increase capacity without further increasing the number of base station antennas, so-called multi-band base station antennas have been introduced, in which multiple linear arrays of radiating elements are included in a single antenna. A very common multi-band base station antenna includes a linear array of “low-band” radiating elements for providing service in some or all of the 617-960MHz band; and two or four linear arrays of “mid-band” radiating elements for providing service in some or all of the 1427-2690MHz band. These linear arrays of radiating elements are typically installed side-by-side.

[0006] However, as the linear arrays of radiating elements are arranged more closely together, signal coupling between the linear arrays may increase. For example, coupling interference between low-frequency band radiating elements or between high-frequency band radiating elements may increase. Furthermore, low-frequency band radiating elements can have a significant scattering effect on nearby mid-frequency band radiating elements. This coupling interference can negatively affect the characteristics of the radiation pattern of the corresponding mid-frequency band linear array. However, any dimensional changes to low-frequency band radiating elements will also typically affect their RF performance, such as altering their operating frequency band or increasing their HPBW.

[0007] Public content

[0008] Therefore, the purpose of this disclosure is to provide a radiating element and a related base station antenna that can overcome at least one defect in the prior art.

[0009] According to a first aspect of this disclosure, a radiating element is provided, wherein the dipole arm of the radiating element may include a first conductive loop and a second conductive loop at least partially separated from the first conductive loop. The first conductive loop may include at least one narrow conductive segment and at least one wide conductive segment. The narrow conductive segment may exhibit high impedance characteristics in at least one frequency band outside the operating frequency band of the radiating element, so as to at least partially suppress current in the at least one frequency band.

[0010] According to a second aspect of this disclosure, a radiating element is provided, wherein the dipole arm of the radiating element may include a first conductive loop and a second conductive loop. The first conductive loop may be disposed on a first main surface of a dielectric substrate, a first portion of the second conductive loop may be disposed on the first main surface of the dielectric substrate, and a second portion of the second conductive loop may be disposed on a second main surface of the dielectric substrate.

[0011] According to a third aspect of this disclosure, a base station antenna is provided, the base station antenna including a feed board and a radiating element according to this disclosure mounted on the feed board. Attached Figure Description

[0012] In the picture:

[0013] Figure 1 A schematic perspective view of a base station antenna according to some embodiments of the present disclosure is shown;

[0014] Figure 2 Show Figure 1 A schematic front view of the antenna assembly in a base station antenna;

[0015] Figure 3 A schematic perspective view of a radiating element according to some embodiments of the present disclosure is shown;

[0016] Figure 4 Show Figure 3 A schematic diagram of the current distribution of the radiating element;

[0017] Figure 5a A schematic front view of a radiating element according to some embodiments of the present disclosure is shown, with additional conductive sections on a second main surface of the dielectric substrate also shown.

[0018] Figure 5b Show Figure 5a A schematic diagram of the radiating element disposed on the dipole arm portion of the first main surface of the dielectric substrate.

[0019] Figure 5c Show Figure 5a A schematic diagram of the radiating element disposed on the dipole arm portion of the second main surface of the dielectric substrate. Detailed Implementation

[0020] The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure more complete and to fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

[0021] It should be understood that the same reference numerals denote the same elements in all the accompanying drawings. For clarity, the dimensions of certain features may be modified in the drawings.

[0022] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this disclosure. All terms used in this specification (including technical and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, well-known functions or structures may not be described in detail.

[0023] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the related listed items. The terms “between X and Y” and “between approximately X and Y” used in this specification should be interpreted as including both X and Y. The term “between approximately X and Y” used in this specification means “between approximately X and approximately Y,” and the term “from approximately X to Y” used in this specification means “from approximately X to approximately Y.”

[0024] In the specification, when an element is described as being "on," "attached," "connected," "coupled," or "in contact" with another element, the element can be directly located on, attached to, connected to, coupled to, or in contact with the other element, or there may be intermediate elements present. Conversely, when an element is described as being "directly" located on, directly attached to, directly connected to, directly coupled to, or directly in contact with another element, no intermediate elements are present. In the specification, the description of a feature being arranged "adjacent" to another feature can mean that a feature has a portion overlapping with the adjacent feature or a portion located above or below the adjacent feature.

[0025] In the specification, spatial relation terms such as "up," "down," "left," "right," "front," "back," "high," and "low" describe the relationship between one feature and another in the accompanying drawings. It should be understood that spatial relation terms include not only the orientation shown in the drawings but also the different orientations of the device during use or operation. For example, when the device in the drawings is inverted, a feature previously described as "below" other features can now be described as "above" other features. The device can also be oriented in other ways (rotated 90 degrees or in other orientations), in which case the relative spatial relationships will be explained accordingly.

[0026] Some embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings.

[0027] Figure 1 A schematic perspective view of a base station antenna 100 according to some embodiments of the present disclosure is shown; Figure 2 Shown in Figure 1 A schematic front view of the antenna assembly 200 in the base station antenna 100.

[0028] like Figure 1 As shown, the base station antenna 100 is an elongated structure extending along the longitudinal axis L. The base station antenna 100 may have a tubular shape with a generally rectangular cross-section. The base station antenna 100 includes an radome 110 and a top cover 120. One or more mounting brackets 150 are disposed on the rear side of the radome 110, which can be used to mount the base station antenna 100 to an antenna bracket 150 (not shown), for example, on an antenna tower. The base station antenna 100 also includes a bottom cover 130, which includes a plurality of connectors 140 mounted therein. The base station antenna 100 is generally mounted vertically (i.e., when the base station antenna 100 is in normal operation, the longitudinal axis L may be generally perpendicular to the plane defined by the horizon).

[0029] like Figure 2As shown, the base station antenna 100 includes an antenna assembly 200 slidably inserted into an radome 110. The antenna assembly 200 includes a reflector 210 and a plurality of radiating element arrays mounted on the reflector 210. The reflector 210 can serve as a ground plane structure for each radiating element, and each radiating element is mounted to extend forward (along the forward direction F) from the reflector 210. These arrays can be, for example, linear radiating element arrays or two-dimensional radiating element arrays. In some embodiments, each array can extend substantially along the entire length of the base station antenna 100. In other embodiments, each array can also extend only partially along the length dimension of the base station antenna 100. These arrays can extend from the lower end to the upper end of the base station antenna 100 along a vertical direction V, which can be the direction of the longitudinal axis L of the base station antenna 100 or parallel to the longitudinal axis L. This vertical direction V is perpendicular to the horizontal direction H and the forward direction F (see...). Figure 1 ).

[0030] exist Figure 2 In one embodiment, an exemplary linear array of six radiating elements is shown: two low-frequency band arrays 302-1 and 302-2, two mid-frequency band arrays 402-1 and 402-2, and two mid-frequency band arrays 502-1 and 502-2, wherein each array has only one low-frequency band radiating element 300 to represent the two low-frequency band arrays 302-1 and 302-2. The operating frequency band of the low-frequency band radiating element 300 may be, for example, 617 MHz to 960 MHz or one or more portions thereof. The operating frequency band of the mid-frequency band radiating element 400 may be, for example, 1427 MHz to 2690 MHz or one or more portions thereof. The operating frequency band of the mid-frequency band radiating element 500 may be 1690 to 2690 MHz or one or more portions thereof. In other embodiments, a high-frequency band radiating element array may also be provided, whose operating frequency band may be 3 GHz to 5.8 GHz or one or more portions thereof.

[0031] Next, refer to the appendix. Figure 3 and 4 The radiating element 300 according to some embodiments of this disclosure is described in more detail. Figure 3 and 4 In the embodiments, the radiating element 300 can be configured as follows: Figure 2 The low-frequency radiating element can be configured to transmit and receive RF signals in, for example, a frequency range of 617-960 MHz or a portion thereof. In other embodiments, the radiating element can also be configured as a radiating element in other frequency bands. In other embodiments, the radiating element 300 can also be configured as a broadband radiating element.

[0032] Figure 3A schematic perspective view of the radiating element 300 is shown. Figure 3 In one embodiment, the radiating element 300 includes a cross radiator formed of sheet metal. The cross radiator can be supported on a dielectric substrate serving as a support structure 360. Sheet metal radiators are advantageous because: first, they are inexpensive; second, they can have any desired thickness and exhibit improved impedance matching and / or reduced signal transmission loss; and third, they can readily achieve low levels of surface roughness and exhibit improved passive intermodulation (“PIM”) distortion performance.

[0033] The cross-radiator structure includes a first dipole radiator and a second dipole radiator. Each dipole radiator includes a pair of dipole arms 310. It should be understood that the specific configuration of the dipole arms 310 is not limited in this disclosure. In other embodiments, the dipole arms 310 of the radiating element may also be configured as printed circuit board dipole arms including printed metal patterns.

[0034] Each dipole arm 310 of the radiating element 300 may respectively include an annular arm or conductive loop (hereinafter referred to as a first conductive loop 330) consisting of at least one narrow conductive segment 370 and at least one wide conductive segment 380. Each first conductive loop 330 may include two conductive paths, the first conductive path forming one half of the dipole arm 310 and the second conductive path forming the other half of the dipole arm 310. The narrow conductive segment 370 may be configured as a curved arm segment to increase its path length, thereby contributing to the compactness of the radiating element 300 and / or the desired filtering effect relative to high-frequency band radiation. The wide conductive segment 380 may have a first width, and the narrow conductive segment 370 may have a second width. The first width of each wide conductive segment 380 and the second width of each narrow conductive segment 370 need not be the same. Therefore, in some cases, the average width of the wide conductive segment 380 and the narrow conductive segment 370 is referenced. The average width of each wide conductive segment 380 may be, for example, at least twice the average width of each narrow conductive segment 370. In other cases, the average width of each wide conductive segment 380 may be, for example, three, four, five, six, eight, or ten times the average width of each narrow conductive segment 370.

[0035] The first and second conductive paths are spaced apart from each other at least in certain sections, that is, a gap 320 exists between the first and second conductive paths. In some cases, the gap 320 between the first wide conductive section 380 of the first conductive path and the second wide conductive section 380 of the opposite second conductive path can be 2.5, 2, 1.75, 1.5, 1.25, 1, or 0.5 times the first width of the wide conductive section 380. A larger gap is beneficial for shortening the end-to-end length of the dipole arm 310 and thus contributes to the compactness of the radiating element 300.

[0036] Furthermore, the curved, narrow conductive section 370 can be implemented as a nonlinear conductive section, which can act as a high-impedance portion to at least partially suppress or interrupt currents in the high-frequency and / or mid-frequency bands that might otherwise be induced on the first conductive loop 330. Thus, the narrow conductive section 370 can reduce the high-frequency and / or mid-frequency band currents induced on the low-frequency radiating element 300, thereby further reducing the scattering effect of the low-frequency radiating element 300 on the high-frequency and / or mid-frequency radiating elements. The narrow conductive section 370 can make the first conductive loop 330 virtually invisible to the high-frequency and / or mid-frequency radiating elements, thus giving the low-frequency radiating element 300 a stealth capability. A stealthy low-frequency radiating element 300 is advantageous because the less high-frequency and / or mid-frequency band currents are induced on the dipole arm 310 of the low-frequency radiating element 300, the less impact it has on the radiation pattern characteristics of the linear array of the high-frequency and / or mid-frequency radiating elements.

[0037] However, due to the design of the first conductive loop 330 of the dipole arm 310 of the radiating element 300, the operating frequency band of the radiating element 300 associated with the first conductive loop 330 may change. For example, the operating frequency band may narrow and / or the position of the center frequency of the operating frequency band may shift. These changes in the operating frequency band negatively affect the stable RF performance of the radiating element 300 within its designated operating frequency band. In some embodiments, the designated operating frequency band of the radiating element 300 may be, for example, 617-960MHz. However, the first conductive loop 330 of the radiating element 300 cannot operate throughout the entire operating frequency band. For example, in some embodiments, the first conductive loop 330 can only operate in the sub-band 617-860MHz, and cannot obtain good radiation performance in the sub-band 860-960MHz. In other embodiments, the first conductive loop 330 can only operate adequately in the sub-band 760-960MHz, and cannot obtain good radiation performance in the sub-band 617-760MHz.

[0038] To improve the RF performance of the radiating element 300 within a predetermined operating frequency band, a dipole arm 310 based on a multiresonant circuit is proposed. (Continuing to refer to...) Figure 3 The dipole arm 310 of the radiating element 300 may include multiple conductive loops. Figure 3 In this embodiment, the dipole arm 310 may include a first conductive loop 330 and a second conductive loop 340. The first conductive loop 330 may be configured as a first resonant circuit, designed for a first sub-band within the operating frequency band of the radiating element 300. The second conductive loop 340 may be configured as a second resonant circuit, designed for a second sub-band within the operating frequency band of the radiating element 300. In other words, the resonant frequency of the first resonant circuit may be designed as the center frequency of the first sub-band, and the resonant frequency of the second resonant circuit may be designed as the center frequency of the second sub-band. The resonant frequency of the first resonant circuit is lower than the resonant frequency of the second resonant circuit. The first and second sub-bands may each occupy a portion of the operating frequency band and together constitute the entire operating frequency band. Figure 3 In some embodiments, the first sub-band and the second sub-band can be designed to have partially overlapping frequency bands or completely separate frequency bands. In some embodiments, the first sub-band can be designed as a lower portion of the operating frequency band, such as 617-860MHz, while the second sub-band can be designed as a higher portion of the operating frequency band, such as 860-960MHz. In other embodiments, the first sub-band can be designed as a lower portion of the operating frequency band, such as 617-900MHz, while the second sub-band can be designed as a lower portion of the operating frequency band, such as 860-960MHz. In still other embodiments, the first sub-band can be designed as a higher portion of the operating frequency band, while the second sub-band can be designed as a lower portion of the operating frequency band.

[0039] exist Figure 3In some embodiments, the second conductive loop 340 may be located within the first conductive loop 330 and share a common conductive section with the first conductive loop 330. The common conductive section may include at least a portion of a wide conductive section and / or at least a portion of a narrow conductive section on the first conductive loop 330. Furthermore, the dipole arm of the radiating element may also include an additional conductive section 350, which may be connected across the first conductive loop 330 as a separate section separately attached to the second conductive loop 340. The additional conductive section 350 may be configured to short-circuit the first conductive loop 330. In some embodiments, the additional conductive section 350 may bridge from a first wide conductive section of the first conductive loop 330 to a second wide conductive section, such as an opposing second wide conductive section, thereby electrically connecting together with the common conductive section to form the second conductive loop 340. In other embodiments, the additional conductive segment 350 may also bridge from any wide conductive segment of the first conductive loop 330 to any narrow conductive segment, or from any narrow conductive segment of the first conductive loop 330 to any wide or narrow conductive segment. To provide the additional conductive segment 350, the support structure 360 ​​of the radiating element may correspondingly provide a bridging portion 361 bridging the first conductive loop 330. The additional conductive segment 350 may have a narrower dimension, for example, a width less than or equal to 2 mm, 1.5 mm, 1 mm, 0.8 mm, 0.7 mm, 0.5 mm, or 0.2 mm. In some embodiments, the additional conductive segment 350 may also be configured as a curved, non-linear conductive segment. The additional conductive segment 350 may, as a high-impedance portion, at least partially suppress or interrupt currents in the high-frequency and / or mid-frequency bands that might otherwise be induced on the second conductive loop 340, thereby further reducing the scattering effect of the low-frequency radiating element 300 on the high-frequency and / or mid-frequency radiating element.

[0040] exist Figure 3 In one embodiment, since the second conductive loop 340 is located inside the first conductive loop 330 and the path length of the second conductive loop 340 is less than the path length of the first conductive loop 330, the second conductive loop 340 can be designed for a higher sub-frequency band, while the first conductive loop 330 can be designed for a lower sub-frequency band. However, in other embodiments, the second conductive loop 340 can also be located outside the first conductive loop 330; for example, the additional conductive segment 350 can be located outside the first conductive loop 330. In this case, the path length of the second conductive loop 340 is greater than the path length of the first conductive loop 330, so the second conductive loop 340 can be designed for a lower sub-frequency band, while the first conductive loop 330 can be designed for a higher sub-frequency band.

[0041] Figure 4schematically shown Figure 3 The current distribution pattern of the radiating element is shown. By appropriately designing the first conductive loop 330 and the second conductive loop 340, the current distribution on the dipole arm can be made more balanced, thereby improving the RF performance of the radiating element. In some embodiments, by appropriately designing the additional conductive section 350, current can be shunt on the dipole arm; in other words, an appropriate amount of current will flow through the additional conductive section 350, thereby reducing the current amplitude in local areas of the dipole arm and making the current distribution more uniform.

[0042] It should be understood that the radiating element can also be provided with more conductive loops, for example, by setting two additional conductive sections 350 to form three conductive loops, which will not be elaborated here.

[0043] Next, we will refer to Figures 5a-5c The radiating element 300' according to some embodiments of the present disclosure is described in more detail. It should be understood that the above description regarding... Figure 3 and 4 The content of radiation element 300 can be directly applied to radiation element 300'. Here, we only explain the differences between radiation element 300 and radiation element 300.

[0044] Figure 5a A schematic front view of the radiating element 300' is shown, and additional conductive sections 350' on the second main surface of the dielectric substrate 360' are also shown (it should be understood that the additional conductive sections 350' are not visible in the schematic front view). Figure 5a As shown, in order to form the second conductive loop 340', at least one additional conductive segment 350' can be provided on the second main surface of the dielectric substrate 360', which serves as a support structure. The additional conductive segment 350' can be electrically coupled (e.g., capacitively coupled) to the first conductive loop 330' located on the first main surface of the dielectric substrate, thereby the additional conductive segment 350' can be electrically coupled to a common conductive segment on the first main surface to form the second conductive loop 340'.

[0045] Figure 5b A schematic diagram shows a portion of a dipole arm 310' disposed on a first main surface 361' of a dielectric substrate 360'. The dipole arm 310' portion is configured to include a first conductive loop 330' comprising at least one narrow conductive section 370' and at least one wide conductive section 380'. Further details are omitted here.

[0046] Figure 5c A schematic diagram shows a portion of the dipole arm 310' disposed on the second main surface 362' of the dielectric substrate 360' of the radiating element 300'. The dipole arm 310' portion constitutes the additional conductive section 350'. Figure 5a and5c As shown, the additional conductive section 350' may include a first coupling portion 351', a first coupling portion 352', and a conductive section 353' connected between the first coupling portion 351' and the first coupling portion 352'. The first coupling portion 351' may be electrically coupled to the first conductive line ring 330', and the first coupling portion 352' may be electrically coupled to the first conductive line ring 330'. In the current embodiment, the first coupling portion 351' may be electrically coupled to a first wide conductive section 380' of the first conductive line ring 330', and the first coupling portion 352' may be electrically coupled to a second wide conductive section 380' of the first conductive line ring 330', wherein the first wide conductive section and the second wide conductive section may be opposite each other. Furthermore, the first coupling portion 351' can be configured as a first wide segment, the first coupling portion 352' can be configured as a second wide segment, and the conductive segment 353' connecting the first coupling portion 351' and the first coupling portion 352' can be configured as a narrow segment, thereby forming a capacitor-inductor-capacitor (CLC) structure. The CLC structure is advantageous because by designing the CLC structure, the current distribution on the second conductive loop 340' can be altered. In some cases, the CLC structure can be configured as a high-impedance portion to interrupt currents that might otherwise be induced on the second conductive loop 340' in at least one frequency band outside the operating frequency band of the radiating element, thereby reducing the scattering effect of the radiating element on radiating elements in other frequency bands.

[0047] While exemplary embodiments of this disclosure have been described, those skilled in the art will understand that various changes and modifications can be made to the exemplary embodiments of this disclosure without departing from the spirit and scope thereof. Therefore, all changes and modifications are included within the scope of protection of this disclosure as defined in the claims.

Claims

1. A radiating element, characterized in that, The dipole arm of the radiating element includes a first conductive loop and a second conductive loop at least partially separated from the first conductive loop. The first conductive loop includes at least one narrow conductive segment and at least one wide conductive segment. The narrow conductive segment exhibits high impedance characteristics in at least one frequency band outside the operating frequency band of the radiating element, in order to at least partially suppress current in the at least one frequency band. The first conductive circuit ring includes a first conductive path and a second conductive path, with a gap between the first conductive path and the second conductive path. The first conductive loop and the second conductive loop share a common conductive section. The dipole arm of the radiating element also includes an additional conductive section. The additional conductive section is electrically connected to the common conductive section to form the second conductive loop. The additional conductive section bridges from the first conductive path to the second conductive path.

2. The radiating element according to claim 1, characterized in that, The first conductive loop is configured as a first resonant circuit, and the second conductive loop is configured as a second resonant circuit, wherein the resonant frequency of the first resonant circuit is different from the resonant frequency of the second resonant circuit.

3. The radiating element according to claim 2, characterized in that, The resonant frequency of the first resonant circuit is lower than that of the second resonant circuit.

4. The radiating element according to claim 1, characterized in that, The additional conductive section is configured to short-circuit the first conductive loop.

5. The radiating element according to claim 1, characterized in that, The additional conductive section spans from the first wide conductive section of the first conductive line ring to the second wide conductive section of the first conductive line ring.

6. The radiating element according to claim 1, characterized in that, The dipole arm of the radiating element is configured as a sheet metal dipole arm, and the radiating element also includes a support structure, wherein the first conductive line ring and the additional conductive section are both disposed on the first main surface of the support structure.

7. The radiating element according to claim 6, characterized in that, The support structure has a bridging portion, and the additional conductive section is disposed on the bridging portion.

8. The radiating element according to claim 1, characterized in that, The dipole arm of the radiating element is configured as a printed circuit board dipole arm, which includes a metal pattern printed on a dielectric substrate, and the first conductive loop and the additional conductive segment are both printed on the first main surface of the dielectric substrate.

9. The radiating element according to claim 3, characterized in that, The dipole arm of the radiating element also includes at least one additional conductive section, which is electrically coupled to the common conductive section to form the second conductive loop.

10. The radiating element according to claim 9, characterized in that, The additional conductive section includes a first coupling portion, a second coupling portion, and a conductive section connected between the first coupling portion and the second coupling portion.

11. The radiating element according to claim 10, characterized in that, The first coupling part is electrically coupled to the first wide conductive section of the first conductive line ring, and the second coupling part is electrically coupled to the second wide conductive section of the first conductive line ring.

12. The radiating element according to claim 11, characterized in that, The first coupling portion is configured as a first wide segment, the second coupling portion is configured as a second wide segment, and the additional conductive segment is configured as a narrow segment.

13. The radiating element according to claim 12, characterized in that, The first wide conductive section, together with the first coupling portion, the conductive section connected between the first coupling portion and the second coupling portion, and the second wide conductive section and the second coupling portion, together constitute a capacitor-inductor-capacitor structure.

14. The radiating element according to any one of claims 9 to 13, characterized in that, The dipole arm of the radiating element is configured as a sheet metal part, and the radiating element also includes a support structure. The first conductive line loop is disposed on the first main surface of the support structure. The support structure has a bridging portion. The additional conductive section is disposed on the support structure on a second main surface opposite to the first main surface.

15. The radiating element according to any one of claims 9 to 13, characterized in that, The dipole arm of the radiating element is configured as a printed circuit board dipole arm, the printed circuit board dipole arm includes a metal pattern printed on a dielectric substrate, and the first conductive line ring is printed on a first main surface of the dielectric substrate, and the additional conductive segment is printed on a second main surface of the dielectric substrate opposite to the first main surface.

16. The radiating element according to claim 1, characterized in that, The first conductive loop includes two conductive paths, the first conductive path forming one half of the first conductive loop and the second conductive path forming the other half of the first conductive loop, and there is a gap between the first conductive path and the second conductive path.

17. The radiating element according to claim 1, characterized in that, The narrow conductive section is configured as a curved nonlinear conductive section, which, as a high-impedance portion, at least partially interrupts the current that may be induced on the first conductive loop in at least one frequency band outside the operating frequency band of the radiating element.

18. The radiating element according to claim 1, characterized in that, The additional conductive section is configured to at least partially interrupt current that may be induced on the second conductive loop in at least one frequency band outside the operating frequency band of the radiating element.

19. A radiating element, characterized in that, The dipole arm of the radiating element includes a first conductive loop and a second conductive loop, wherein the first conductive loop is disposed on a first main surface of the dielectric substrate, a first portion of the second conductive loop is disposed on the first main surface of the dielectric substrate, and a second portion of the second conductive loop is disposed on a second main surface of the dielectric substrate. The first conductive circuit ring includes a first conductive path and a second conductive path, with a gap between the first conductive path and the second conductive path. The first part of the second conductive circuit ring is configured as a common conductive section with the first conductive circuit ring, and the second part of the second conductive circuit ring is configured as an additional conductive section. The additional conductive section is electrically coupled to the common conductive section to form the second conductive circuit ring. The additional conductive section is connected from the first side of the corresponding first conductive path to the second side of the corresponding second conductive path.

20. The radiating element according to claim 19, characterized in that, The first conductive loop is configured as a first resonant circuit, and the second conductive loop is configured as a second resonant circuit, wherein the resonant frequency of the first resonant circuit is lower than the resonant frequency of the second resonant circuit.

21. The radiating element according to claim 19, characterized in that, The second part of the second conductive circuit ring includes a first coupling part, a second coupling part, and a conductive section connected between the first coupling part and the second coupling part.

22. The radiating element according to claim 21, characterized in that, The first conductive loop, the first coupling portion, the conductive section connecting the first coupling portion and the second coupling portion, and the first conductive loop and the second coupling portion constitute a capacitor-inductor-capacitor structure.

23. The radiating element according to claim 19, characterized in that, The dipole arm of the radiating element is configured as a sheet metal dipole arm. The first conductive loop is supported on the first main surface of the dielectric plate. The dielectric plate has a bridging portion. The second part of the second conductive loop is supported on the dielectric plate on a second main surface opposite to the first main surface, such that the second part of the second conductive loop crosses the first conductive loop on the second main surface.

24. The radiating element according to claim 19, characterized in that, The dipole arm of the radiating element is configured as a printed circuit board dipole arm, which includes a metal pattern printed on a dielectric substrate, and the first conductive loop is printed on a first main surface of the dielectric substrate, and a second portion of the second conductive loop is printed on a second main surface of the dielectric substrate opposite to the first main surface.

25. A base station antenna, characterized in that, The base station antenna includes a feed board and a radiating element according to any one of claims 1 to 24 mounted on the feed board.

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