Radiating element for base station antenna and base station antenna

Abstract

The present disclosure relates to a radiating element for a base station antenna, the radiating element being operable within a first frequency band, characterized in that the radiating element has a radiator comprising a first radiating arm and a second radiating arm wherein at least one of the first radiating arm and the second radiating arm comprises: a first conductive region; a second conductive region spaced apart from the first conductive region; a first inductive trace for electrically connecting the first conductive region and the second conductive region; wherein a first gap from which metal is removed is provided within the first conductive region, and the first inductive trace has a first trace segment extending into the first gap, the first trace segment being arranged within the first gap at a distance from the first conductive region. In addition, the disclosure relates to a base station antenna.

Description

Technical Field

[0001] The present disclosure relates to the field of radio communications, and more particularly, to a radiation element for a base station antenna and a base station antenna. Background Art

[0002] Cellular communication systems are well known in the art. In a typical cellular communication system, a geographic area is divided into a series of areas called "cells", each of which is served by a base station. The base station may include baseband equipment, a radio, and a base station antenna configured to provide two-way radio frequency ("RF") communications with users located throughout the cell. In many cases, the cell may be divided into a plurality of "sectors", and a separate base station antenna provides coverage for each sector. The antennas are typically mounted on a tower, with the radiation beam ("antenna beam") generated by each antenna directed outward to serve the corresponding sector. Typically, the base station antenna includes one or more phased arrays of radiating elements, wherein the radiating elements are arranged in one or more vertical columns when the antenna is mounted for use. In this document, "vertical" refers to a direction perpendicular to a horizontal plane defined by the horizon. Reference will also be made to an azimuth plane, which is a horizontal plane that bisects the base station antenna, and an elevation plane, which is a plane perpendicular to the azimuth plane that extends along the direction in which the boresight of the antenna is pointing.

[0003] A common base station configuration is a "three-sector" configuration, in which the cell is divided into three 120° sectors in the azimuth plane. A base station antenna is provided for each sector. In a three-sector configuration, the antenna beam generated by each base station antenna typically has a half-power beamwidth ("HPBW") in the azimuth plane of about 65°, so that each antenna beam provides good coverage of the entire 120° sector. Three such base station antennas provide full 360° coverage in the azimuth plane. Typically, each base station antenna will include a so-called "linear array" of radiating elements, which includes a plurality of radiating elements arranged in vertically extending columns. Each radiating element may have an azimuth HPBW of approximately 65°, so that the antenna beam produced by the linear array has an HPBW of approximately 65° in the azimuth plane. By providing a phased column of radiating elements extending along the elevation plane, the HPBW of the antenna beam in the elevation plane can be narrowed to significantly less than 65°, with the amount of narrowing increasing with the length of the column in the vertical direction.

[0004] As cellular traffic has grown, cellular operators have added new cellular services in various new frequency bands. When these new services are introduced, existing "old versions" of the services must often be maintained to support old versions of mobile devices. In some cases, linear arrays of so-called "wideband" or "ultra-wideband" radiating elements may be used to support services in the new frequency bands. However, in other cases, additional linear arrays (or planar arrays) of radiating elements may need to be deployed to support services in the new frequency bands. Due to local zoning regulations and / or weight and wind loading restrictions, there are often limitations on the number of base station antennas that can be deployed on a given base station. Therefore, in order to reduce the number of antennas, many operators deploy so-called "multi-band" base station antennas, which include multiple linear arrays of radiating elements that communicate in different frequency bands to support multiple different cellular services.

[0005] Traditionally, the low-band frequency range extends between 696-960MHz, and supports cellular services within the low-band frequency range with several different frequency bands. Recently, the 617-698MHz frequency band is opened for cellular services, thereby generating a demand for base station antennas, which include wideband linear arrays of low-band radiating elements across the entire 617-960MHz range or at least across the 617-896MHz frequency range. These base station antennas also typically include two or more linear arrays of mid-band radiating elements, which operate in all or part of the frequency range among the 617-960MHz frequency range, and which are installed very close to the low-band linear arrays to provide a compact antenna design. Unfortunately, the undesirable interaction between the low-band radiating elements and the mid-band radiating elements that may occur due to the close proximity of adjacent arrays may have a negative impact on the antenna beam formed by the mid-band linear arrays. For example, as described above, the low-band radiating element can be designed to work in all or part of the 617-960MHz frequency range, and the mid-band radiating element can be designed to work in all or part of the 1427-2690MHz frequency range. When the low-band radiating element resonates at the wavelength of the mid-band RF signal, undesirable interactions often occur between the low-band radiating element and the mid-band radiating element. This is particularly prone to occur when the mid-band radiating element transmits and receives signals with a frequency that is approximately twice the center frequency of the operating frequency band of the low-band radiating element. Under these conditions, the low-band radiating element (or the components of the low-band radiating element) can resonate in response to the mid-band signal, so that, for example, the mid-band current is induced on the dipole arm of the low-band radiating element. This type of interaction can cause the scattering of the mid-band RF signal, which can adversely affect at least a portion of the following various characteristics of the mid-band antenna beam, including azimuth and elevation beam width, beam slope, antenna beam pointing angle, gain, front-to-back ratio, cross-polarization distinction, etc. Furthermore, the effects of scattering can vary significantly with frequency, which can make it difficult to use other techniques to compensate for these effects. Summary of the invention

[0006] Therefore, an object of the present disclosure is to provide a radiation element for a base station antenna and a base station antenna that can overcome at least one defect in the prior art.

[0007] According to a first aspect of the present disclosure, a radiating element for a base station antenna is provided, wherein the radiating element can operate within a first frequency band, wherein the radiating element has a radiator, and the radiator includes a first radiating arm and a second radiating arm, wherein at least one of the first radiating arm and the second radiating arm includes: a first conductive area; a second conductive area, wherein the second conductive area is spaced apart from the first conductive area by a distance; a first inductive trace, which is used to electrically connect the first conductive area and the second conductive area; wherein a first gap from which metal is removed is provided in the first conductive area, and the first inductive trace has a first trace segment extending into the first gap, and the first trace segment is arranged in the first gap at a distance from the first conductive area.

[0008] In some embodiments, the first trace segment of the first inductive trace can be capacitively coupled with the first conductive region.

[0009] In some embodiments, an LC resonant circuit may be formed by the first inductive trace itself and the capacitive coupling between the first trace segment and the first conductive region, and the LC resonant circuit is configured to allow a current within a first frequency band to pass through, while at least partially suppressing a current within a second frequency band different from the first frequency band. That is, an LC resonant circuit is provided in at least one of the first radiating arm and the second radiating arm, the LC resonant circuit includes the first inductive trace and the capacitive coupling, and the LC resonant circuit is configured to allow a current within the first frequency band to pass through, while at least partially suppressing a current within the second frequency band different from the first frequency band.

[0010] In some embodiments, the first inductive trace may be capacitively coupled with the first conductive region through the first trace segment to form an LC resonant circuit configured to suppress current at least within a second frequency band different from the first frequency band.

[0011] In some embodiments, the inductance value of the first inductive trace can be adjusted by changing the width, length and / or direction of the first inductive trace.

[0012] In some embodiments, an average width of the first inductive trace may be less than one fifth of an average width of the first conductive region and / or the second conductive region.

[0013] In some embodiments, at least a portion of the first inductive trace may be arranged to extend in a meandering manner.

[0014] In some embodiments, a first capacitor may be formed between the first trace segment and the first conductive region.

[0015] In some embodiments, the first trace segment may form a first inductor that forms a first LC parallel resonant circuit with a first capacitor.

[0016] In some embodiments, the first gap may have the same orientation as that of the first trace segment.

[0017] In some embodiments, the first gap may be configured as a linearly extending gap or a zigzag extending gap, and / or the first trace segment may be configured as a linearly extending trace segment or a zigzag extending trace segment.

[0018] In some embodiments, an end of the first trace segment may be physically connected to or spaced apart from the first conductive region.

[0019] In some embodiments, at least one of the first and second radiating arms may include a dielectric substrate having a first side where the first trace segment is located and a second side opposite to the first side, and a first additional coupling region capacitively coupled to the first conductive region is disposed on the second side.

[0020] In some embodiments, the first trace segment may be electrically connected to a first additional coupling region via a first conductive structure passing through the dielectric substrate.

[0021] In some embodiments, an end of the first trace segment may be electrically connected to a first additional coupling region via a first conductive structure passing through the dielectric substrate.

[0022] In some embodiments, the first conductive structure may include a metallized via or a conductive pin.

[0023] In some embodiments, the first inductive trace may have a second trace segment for directly physically connecting the first trace segment with the second conductive region.

[0024] In some embodiments, the second trace segment may be configured as a trace segment extending in a straight line or a trace segment extending in a meandering line.

[0025] In some embodiments, a second gap from which metal is removed may be provided in the second conductive region, the first inductive trace has a third trace segment extending into the second gap, and the third trace segment is arranged in the second gap at a distance from the second conductive region.

[0026] In some embodiments, a second capacitor may be formed between the third trace segment and the second conductive region.

[0027] In some embodiments, the third trace segment may form a second inductor that forms a second LC parallel resonant circuit with a second capacitor.

[0028] In some embodiments, the second gap may have the same orientation as that of the third trace segment.

[0029] In some embodiments, the third trace segment may be provided as a trace segment extending in a straight line or a trace segment extending in a meandering line.

[0030] In some embodiments, the distal end of the third trace segment can be physically connected to or spaced apart from the second conductive region.

[0031] In some embodiments, at least one of the first and second radiating arms may include a dielectric substrate having a first side where the third trace segment is located and a second side opposite to the first side, and a second additional coupling region capacitively coupled to the second conductive region is disposed on the second side.

[0032] In some embodiments, the third trace segment may be electrically connected to the second additional coupling region via a second conductive structure passing through the dielectric substrate.

[0033] In some embodiments, an end of the third trace segment may be electrically connected to the second additional coupling region via a second conductive structure passing through the dielectric substrate.

[0034] In some embodiments, the second conductive structure may include a metallized via or a conductive pin.

[0035] In some embodiments, the first inductive trace has a fourth trace segment for directly physically connecting the first trace segment with the third trace segment.

[0036] In some embodiments, the fourth trace segment may be provided as a trace segment extending in a straight line or a trace segment extending in a meandering manner.

[0037] In some embodiments, the at least one of the first radiating arm and the second radiating arm may include a second inductive trace spaced apart from the first inductive trace for electrically connecting the first conductive region and the second conductive region.

[0038] In some embodiments, a third gap from which metal is removed may be provided in the first conductive region, the second inductive trace has a first trace segment extending into the third gap, and the first trace segment of the second inductive trace is arranged in the third gap at a distance from the first conductive region; and / or a fourth gap from which metal is removed may be provided in the second conductive region, the second inductive trace has a second trace segment extending into the fourth gap, and the second trace segment of the second inductive trace is arranged in the fourth gap at a distance from the second conductive region.

[0039] In some embodiments, the second inductive trace may be connected in parallel with the first inductive trace between the first conductive region and the second conductive region.

[0040] In some embodiments, the radiating element may be a dual-polarized radiating element including a cross-dipole radiating element and a box-type dipole radiating element.

[0041] According to a second aspect of the present disclosure, a base station antenna is provided, wherein the base station antenna comprises the above-mentioned radiation element for a base station antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present disclosure will be described in more detail below with reference to the accompanying drawings and by means of specific embodiments. The schematic drawings are briefly described as follows:

[0043] Figure 1a is a schematic perspective view of a base station antenna according to some embodiments of the present disclosure, with the radome removed, wherein two first frequency band radiating element arrays and four second frequency band radiating element arrays are exemplarily shown;

[0044] Figure 1b yes Figure 1a A schematic front view of a base station antenna;

[0045] Figure 2a yes Figure 1a and Figure 1b A perspective view of a first frequency band radiating element in a base station antenna;

[0046] Figure 2b yes Figure 2a A partially enlarged front view of a radiating arm of a radiator of a first frequency band radiating element;

[0047] Figure 2c yes Figure 2b A partial enlarged side view of the radiation arm;

[0048] Figure 3a yes Figure 2b A further partial enlarged front view of the radiating arm of the embodiment of the present invention, which shows the first conductive region, the second conductive region, and the first inductive trace and the second inductive trace disposed between the first conductive region and the second conductive region;

[0049] Figure 3b yes Figure 3a A schematic diagram of an LC resonant circuit formed by the first inductive trace and the second inductive trace and the first conductive region and the second conductive region;

[0050] Figure 4a yes Figure 2a a graph of simulated return loss of a radiating element for a first frequency band;

[0051] Figure 4b yes Figure 2a a simulated azimuth pattern of a first frequency band radiating element;

[0052] Figure 5a is an enlarged front view of a portion of a radiating arm of a radiator of a first frequency band radiating element according to other embodiments of the present disclosure, which is Figure 3a The main difference is that a different first inductive trace is shown;

[0053] Figure 5b yes Figure 5a A schematic diagram of an LC resonant circuit formed by the first inductive trace and the second inductive trace and the first conductive region and the second conductive region;

[0054] Figure 6a is an enlarged front view of a portion of a radiating arm of a radiator of a first frequency band radiating element according to other embodiments of the present disclosure, which is Figure 3a The difference is pointed out that an additional coupling region disposed on the back side of the dielectric substrate is additionally shown;

[0055] Figure 6b yes Figure 6a A schematic diagram of an LC resonant circuit formed by the first inductive trace and the second inductive trace in the embodiment of the present invention and the first conductive region, the second conductive region and the additional coupling region;

[0056] Figure 7a is an enlarged front view of a portion of a radiating arm of a radiator of a first frequency band radiating element according to other embodiments of the present disclosure, which is Figure 3a The main difference is that different first and second inductive traces are shown;

[0057] Figure 7b yes Figure 7a A schematic diagram of an LC resonant circuit formed by the first inductive trace and the second inductive trace and the first conductive region and the second conductive region;

[0058] Figure 8 is an enlarged front view of a portion of a radiating arm of a radiator of a first frequency band radiating element according to other embodiments of the present disclosure, which is Figure 3a The difference is that an additional inductive trace disposed on the back side of the dielectric substrate is additionally shown;

[0059] Fig. 9 is an enlarged front view of a portion of a radiating arm of a radiator of a first frequency band radiating element according to other embodiments of the present disclosure, which is Figure 3a The main difference is that different first and second inductive traces are shown;

[0060] Fig.10 is a perspective view of a first frequency band radiation element according to some other embodiments of the present disclosure. DETAILED DESCRIPTION

[0061] The present disclosure proposes a radiation element 121 for a base station antenna 100, wherein the radiation element 121 can operate within a first frequency band, wherein the radiation elements 121, 131 have radiators 10, 20. The radiator 10 includes a first radiation arm 11 and a second radiation arm 12, and the radiator 20 includes a third radiation arm 13 and a fourth radiation arm 14. At least one of the first radiation arm 11 and the second radiation arm 12 includes: a first conductive area 232-1; a second conductive area 232-2, the second conductive area 232-2 is separated from the first conductive area 232-1 by a distance; and a first inductive trace 234-1, for electrically connecting the first conductive area 232-1 and the second conductive area 232-2. The first conductive area 232-1, the second conductive area 232-2 and the first inductive trace can each include a metal pattern. A first gap 235 - 1 from which metal is removed is provided in the first conductive region 232 - 1 . The first inductive trace 234 - 1 has a first trace segment S11 extending into the first gap 235 - 1 . The first trace segment S11 is arranged in the first gap 235 - 1 at a distance from the first conductive region 232 - 1 .

[0062] In the technical solution of the radiation element for the base station antenna 100 according to the present disclosure, by providing a first gap 235-1 in which metal is removed in the first conductive area 232-1 and allowing the first trace segment S11 of the first inductive trace 234-1 to extend into the first gap 235-1, the first inductive trace 234-1 can be capacitively coupled with the first conductive area 232-1 through its first trace segment S11, and a resonant circuit can be formed through the capacitive coupling and the first inductive trace 234-1 itself. Here, the resonant circuit can be approximately equivalent to or approximately regarded as an LC resonant circuit 200 (see Figure 3b , Figure 5b , Figure 6b and Figure 7b). It should be understood that the resonant circuit may also have other forms of parasitic capacitance and / or parasitic inductance, but they are ignored because they are numerically small. In some embodiments, the LC resonant circuit 200 may be configured to allow current within a first frequency band to pass through, while at least partially suppressing current within a second frequency band different from the first frequency band. In this way, by introducing the LC resonant circuit 200 into the radiating arm of the first frequency band radiating element, the current induced in the second frequency band different from the first frequency band on the radiating arms 11 to 14 of the first frequency band radiating element 121 can be targetedly at least partially suppressed, thereby effectively reducing or eliminating the scattering effect of the first frequency band radiating element 121 on the second frequency band radiation signal of the second frequency band radiating element 131. Thereby, the radiation performance of the second frequency band radiating element 131 can be effectively improved. This will be described below with the help of Figures 1a to 10 For ease of understanding, Figures 1a to 10 The same reference numerals are used for the same components.

[0063] Figure 1a A schematic perspective view of a base station antenna 100 according to some embodiments of the present disclosure is shown, with the antenna cover removed, wherein the base station antenna 100 may, for example, have multiple, for example two, first frequency band radiating element 121 arrays 120-1, 120-2 and multiple, for example four, second frequency band radiating element 131 arrays 130-1, 130-2, 130-3, 130-4. Figure 1b Show Figure 1a A front view of a base station antenna 100 in FIG.

[0064] like Figure 1a and Figure 1b As shown, a plurality of radiating elements 121, 131 are installed on the front side of the reflector 113 of the base station antenna 100. Each radiating element 121, 131 is installed to extend forward from the front surface of the reflector 113. The reflector 113 can be used as a ground plane structure for the radiating elements 121, 131. The radiating elements 121, 131 may include a first frequency band radiating element 121 (herein exemplarily a low frequency band radiating element) and a second frequency band radiating element 131 (herein exemplarily a high frequency band radiating element), wherein the first frequency band radiating element 121 extends further forward than the second frequency band radiating element 131. The frequency band covered by the first frequency band radiating element 121 may be, for example, 617 MHz to 960 MHz or one or more partial ranges therein. The frequency band covered by the second frequency band radiating element 131 may be, for example, 3 GHz to 5 GHz or one or more partial ranges therein. Here, it should be understood that the radiation elements 121 and 131 may also be mid-band radiation elements (whose covered frequency band may be, for example, 1427 MHz to 2690 MHz or one or more partial ranges therein).

[0065] exist Figure 1a and Figure 1b In the embodiment of the present invention, the first frequency band radiating elements 121 are mounted in two columns to form two linear arrays 120-1 to 120-2 of the first frequency band radiating elements 121. The second frequency band radiating elements 131 are mounted in four columns to form four linear arrays 130-1 to 130-4 of the second frequency band radiating elements 131. It should be noted that similar elements may be referred to herein individually by their full reference numerals (e.g., linear array 130-1) or collectively by the first portion of their reference numerals (e.g., linear array 130).

[0066] In other embodiments not shown, the number of the first frequency band radiation element 121 and / or the second frequency band radiation element 131 and the linear arrays 120 and 130 thereof may be greater than or equal to 1. Figure 1a and Figure 1b The number shown in is different. The linear arrays 120 and 130 can be arranged in any suitable relative position relationship and may or may not extend the entire length of the base station antenna 100. In the following, the first frequency band radiating element 121 is used as an example to exemplarily illustrate the present disclosure. However, it should be understood that the technical content described below can be applied to the second frequency band radiating element 131 and / or other frequency band types of radiating elements within the scope of understanding of those skilled in the art.

[0067] Figure 2a Show Figure 1a and Figure 1b 1 is a perspective view of a first frequency band radiating element 121 in a base station antenna 100. Figure 2b Show Figure 2a FIG. 1 is a partially enlarged front view of a radiation arm 11 of a radiator 10 of a first frequency band radiation element 121. FIG. Figure 2c Show Figure 2b A partially enlarged side view of the radiation arm 11.

[0068] like Figure 2aAs shown in , the first frequency band radiation element 121 may be a cross-dipole radiation element, which includes a first radiator 10 and a second radiator 20 arranged crosswise, and includes a feeding post 150. The first radiator 10 may include a radiation arm 11 and a radiation arm 12, and may be configured to transmit and receive radio frequency signals along a first polarization direction, for example, a +45° polarization direction. The second radiator 20 may include a radiation arm 13 and a radiation arm 14, and may be configured to transmit and receive radio frequency signals along a second polarization direction, for example, a -45° polarization direction. The feeding post 150 may include a first feeding post printed circuit board 132 for feeding the first radiator 10 and for grounding the first radiator 10, and may include a second feeding post printed circuit board 134 for feeding the second radiator 20 and for grounding the second radiator 20. In addition, the feeding post 150 is also used to install the first radiator 10 and the second radiator 20 at an appropriate distance in front of the reflector 113 of the base station antenna 100. In some embodiments, the first radiator 10 and the second radiator 20 may be mounted in front of the reflector 113 via the feed post 150 at approximately 3 / 16 to 1 / 4 of the operating wavelength.

[0069] Figure 2b Show Figure 2a FIG. 1 is a partially enlarged front view of one radiating arm 11 of the first radiator 10 of the first frequency band radiating element 121. The other radiating arms 12 to 14 of the first frequency band radiating element 121 may be configured identically to the radiating arm 11 and are therefore not depicted separately.

[0070] like Figure 2a to Figure 2c As shown in FIG. 1 , the radiating arm 11 may include a dielectric substrate 238 (see Figure 2c), the dielectric substrate 238 has a first side 238-1 (herein referred to as the front side) and a second side 238-2 (herein referred to as the back side) opposite to the first side 238-1. A plurality of conductive areas 232-1 to 232-4 electrically connected by corresponding inductive traces 234-1 to 234-3, 236-1 to 236-3 are provided on the front side of the dielectric substrate 238. Here, the radiating arm 11 exemplarily includes four conductive areas 232-1 to 232-4, and adjacent conductive areas 232-1 to 232-4 therein are electrically connected by corresponding two inductive traces 234-1 to 234-3, 236-1 to 236-3. In each of the conductive areas 232-1 to 232-4, there are provided gaps 235-1 to 235-3, 237-1 to 237-3 from which metal is removed, respectively, and the corresponding inductive traces 234-1 to 234-3, 236-1 to 236-3 have trace segments extending into the gaps 235-1 to 235-3, 237-1 to 237-3, and the trace segments are arranged in the corresponding gaps 235-1 to 235-3, 237-1 to 237-3 at a distance from the corresponding conductive areas 232-1 to 232-4. Thus, each of the inductive traces 234-1 to 234-3, 236-1 to 236-3 can be capacitively coupled with the corresponding conductive areas 232-1 to 232-4, respectively, so as to form the above-mentioned LC resonance circuit 200 for suppressing current within at least the second frequency band.

[0071] like Figure 2bAs shown, each conductive region 232-1 to 232-4 may have a corresponding width W1, wherein the width W1 is measured in a direction substantially perpendicular to the direction of current flow along the corresponding conductive region 232-1 to 232-4. The width W1 of each conductive region 232-1 to 232-4 need not be constant. Similarly, each inductive trace 234-1 to 234-3, 236-1 to 236-3 may have a width W2, wherein each width W2 is measured in a direction substantially perpendicular to the direction of instantaneous current flow along the corresponding inductive trace 234-1 to 234-3, 236-1 to 236-3. The width W2 of each inductive trace 2234-1 to 234-3, 236-1 to 236-3 also need not be constant. In some embodiments, the average width of the inductive traces 234-1 to 234-3, 236-1 to 236-3 can be set to be smaller than the average width of the conductive areas 232-1 to 232-4 electrically connected thereto, and in particular, can be set to be smaller than one-fifth, one-eighth, or one-tenth of the average width of the corresponding conductive areas 232-1 to 232-4 electrically connected thereto. In other words, the inductive traces 234-1 to 234-3, 236-1 to 236-3 can be set to be narrower than the conductive areas 232-1 to 232-4 electrically connected thereto. Such narrower inductive traces 234-1 to 234-3, 236-1 to 236-3 can be used as high-impedance conductive traces.

[0072] like Figure 2bAs shown, a portion of the trace segments of the inductive traces 234-1 to 234-3, 236-1 to 236-3 extend into the gaps 235-1 to 235-3, 237-1 to 237-3 of the conductive regions 232-1 to 232-4. In some embodiments, more than 40%, 50%, or 60% of the trace segments of the inductive traces 234-1 to 234-3, 236-1 to 236-3 extend into the gaps 235-1 to 235-3, 237-1 to 237-3 of the conductive regions 232-1 to 232-4. Thus, even if the corresponding inductive traces 234-1 to 234-3, 236-1 to 236-3 and / or gaps 235-1 to 235-3, 237-1 to 237-3 are set longer, for example, for a larger inductance value and / or capacitance value, the adjacent conductive areas 232-1 to 232-4 can still be set in close proximity to each other, so that the four conductive areas 232-1 to 232-4 together present a single radiating arm for radiating radio frequency signals at a frequency within the operating frequency range of the first frequency band radiation element 121. To this end, alternatively or additionally, at least a portion of the inductive traces 234-1 to 234-3, 236-1 to 236-3 can be set as a meandering conductive trace. The gap for accommodating this portion of the meandering conductive trace can also be set as a meandering and extending gap. Here, the meandering conductive trace refers to a non-straight conductive trace that follows a meandering path to increase its path length. The use of the bent conductive traces 234-1 to 234-3, 236-1 to 236-3 can not only change (increase in this case) the inductance value of the inductive traces 234-1 to 234-3, 236-1 to 236-3, but also provides a convenient way to extend the length of the inductive traces 234-1 to 234-3, 236-1 to 236-3 while providing the inductive traces 234-1 to 234-3, 236-1 to 236-3 with a small physical footprint. Since the inductive traces 234-1 to 234-3, 236-1 to 236-3 have a small physical footprint, adjacent conductive regions 232-1 to 232-4 can be in close proximity to each other.

[0073] Figure 3a Show Figure 2b 1 is a further partial enlarged front view of the radiation arm 11, which shows the first conductive region 232-1, the second conductive region 232-2 of the radiation arm 11, and the first inductive trace 234-1 and the second inductive trace 236-1 arranged between the first conductive region 232-1 and the second conductive region 232-2. Figure 3b Show Figure 3a Schematic diagram of the LC resonant circuit 200 formed by the first inductive trace 234-1 and the second inductive trace 236-1 and the first conductive region 232-1 and the second conductive region 232-2.

[0074] like Figure 3aAs shown, the radiation arm 11 includes a first conductive region 232-1 and a second conductive region 232-2 spaced apart from the first conductive region 232-1, and includes a first inductive trace 234-1 and a second inductive trace 236-1 for electrically connecting the first conductive region 232-1 and the second conductive region 232-2. A first gap 235-1 from which metal is removed is provided in the first conductive region 232-1. The first inductive trace 234-1 has a first trace segment S11 extending into the first gap 235-1 and a second trace segment S12 disposed between the first conductive region 232-1 and the second conductive region 232-2. The second trace segment S12 may be directly physically connected to the second conductive region 232-2. The first trace segment S11 of the first inductive trace 234-1 is spaced apart from the first conductive region 232-1 and is arranged in the first gap 235-1. In some embodiments, as Figure 3a The first trace segment S11 of the first inductive trace 234-1 may be configured as a trace segment extending in a bent manner. The end S19 of the first trace segment S11 may be spaced apart from the first conductive region 232-1 by a distance (see Figure 3a , Figure 6a ) or physical connection (see Figure 7a ). The first gap 235-1 may have the same direction as the first trace segment S11, that is, the first gap 235-1 may be configured to be bent and extended. The second trace segment S12 of the first inductive trace 234-1 may be physically connected to the second conductive region 232-2. The second trace segment S12 of the first inductive trace 234-1 may be configured to be a trace segment that is bent and extended.

[0075] Similar to the first conductive region 232-1, a gap 237-1 from which metal is removed may be provided in the second conductive region 232-2. Similar to the first inductive trace 234-1, the second inductive trace 236-1 may have a first trace segment S21 extending into the gap 237-1 and a second trace segment S22 disposed between the first conductive region 232-1 and the second conductive region 232-2. Those skilled in the art may understand that, as shown in FIG. Figure 3a As shown, the second inductive trace 236 - 1 can be configured similarly to the first inductive trace 234 - 1 , which will not be described in detail herein.

[0076] like Figure 3bAs shown, the first inductive trace 234-1 and the second inductive trace 236-1 can cooperate with the first conductive area 232-1 and the second conductive area 232-2 to form an LC resonance circuit 200 between the first conductive area 232-1 and the second conductive area 232-2. Specifically, a first capacitor C1 can be formed between the first trace segment S11 of the first inductive trace 234-1 and the first conductive area 232-1. The first trace segment S11 of the first inductive trace 234-1 itself can form a first inductor L1, and the first inductor L1 and the first capacitor C1 can form a first LC parallel resonance circuit 210. The second trace segment S12 of the first inductive trace 234-1 can form a second inductor L2. The second inductor L2 and the first LC parallel resonance circuit 210 are arranged in a series connection between the first conductive area 232-1 and the second conductive area 232-2. Similarly, a second capacitor C2 may be formed between the first trace segment S21 of the second inductive trace 236-1 and the second conductive region 232-2. The first trace segment S21 of the second inductive trace 236-1 forms a third inductor L3, and the third inductor L3 and the second capacitor C2 form a second LC parallel resonant circuit 220. The second trace segment S22 of the second inductive trace 236-1 forms a fourth inductor L4. The fourth inductor L4 and the second LC parallel resonant circuit 220 are arranged in series connection between the first conductive region 232-1 and the second conductive region 232-2.

[0077] The total inductance value of the first inductive trace 234-1 can be adjusted by changing the width W2, length and / or direction of the first inductive trace 234-1. More specifically, the inductance value of the first inductor L1 can be adjusted by changing the width, length and / or direction of the first trace segment S11 of the first inductive trace 234-1. The inductance value of the second inductor L2 can be adjusted by changing the width, length and / or direction of the second trace segment S12 of the first inductive trace 234-1. The inductance value of the third inductor L3 can be adjusted by changing the width, length and / or direction of the first trace segment S21 of the second inductive trace 236-1. The inductance value of the fourth inductor L4 can be adjusted by changing the width, length and / or direction of the second trace segment S22 of the second inductive trace 236-1. In addition, the capacitance value of the first capacitor C1 can be adjusted by changing the width, length and / or direction of the first gap 235-1, and / or by changing the width, length and / or direction of the first trace segment S11 of the first inductive trace 234-1. The capacitance value of the second capacitor C2 can be adjusted by changing the width, length and / or direction of the gap 237-1, and / or by changing the width, length and / or direction of the first trace segment S21 of the second inductive trace 233-1.

[0078] By reasonably adjusting the inductance values ​​of the first inductor L1 to the fourth inductor L4 and adjusting the capacitance values ​​of the first capacitor C1 to the second capacitor C2, the LC resonant circuit 200 can be configured to at least suppress the current within the second frequency band different from the first frequency band. That is, the LC resonant circuit 200 can be designed to generate a high impedance to the second frequency band current without significantly affecting the ability of the first frequency band current to flow on the radiating arm. Therefore, the LC resonant circuit 200 can reduce the second frequency band current induced on the first frequency band radiating element 121 and reduce the subsequent interference with the antenna pattern of the nearby second frequency band radiating element 131. In some embodiments, the LC resonant circuit 200 can be configured to allow the current within the first frequency band to pass through, while preventing the current within the second frequency band from passing through. That is, the LC resonant circuit 200 can make the first frequency band radiating element 121 almost invisible to the nearby second frequency band radiating element 131, and therefore the first frequency band radiating element 121 may not distort the second frequency band antenna pattern.

[0079] Figure 4a Shows Figure 2a Graph of simulated return loss of the radiating element 121 in the first frequency band. Figure 4b Shows Figure 2a 1. The simulated azimuth pattern of the first frequency band radiation element 121.

[0080] like Figure 4a As shown in FIG. 1 , within the operating frequency range of 617-896 MHz of the first band radiation element 121, the return losses (curves 300, 310) of the two orthogonally polarized radiators 10, 20 of the first band radiation element 121 vary between values ​​of about -12 dB to -19 dB. This shows that the first band radiation element 121 is sufficiently impedance matched. Figure 4b The group of curves labeled 330 in FIG. 1 represents main polarization, while the group of curves labeled 340 represents cross polarization. Figure 4b A plurality of curves are included to show the performance of the first band radiating element 121 at different selected frequencies within the 617-896 MHz operating frequency band. Figure 4b As can be seen in FIG. 1 , a plurality of curves are relatively concentrated, which shows that the first frequency band radiation element 121 has a strong convergence performance. In addition, the first frequency band radiation element 121 generates an antenna beam with a suitable azimuth beamwidth (about 65°) with low side lobes and good cross-polarization discrimination.

[0081] Figure 5a FIG. 1 is an enlarged front view of a portion of a radiation arm 11 of a radiator 10 of a first frequency band radiation element 121 according to other embodiments of the present disclosure, which is similar to FIG. Figure 3aThe main difference between FIG. 2 and FIG. 3 is that a different first inductive trace 234 - 1 is shown. Figure 5b Shows Figure 5a Schematic diagram of the LC resonant circuit 200 formed by the first inductive trace 234-1 and the second inductive trace 236-1 and the first conductive region 232-1 and the second conductive region 232-2.

[0082] and Figure 3a The main difference of the embodiment shown is that Figure 5a In the embodiment of the radiating arm 11 shown, the first gap from which the metal is removed is not provided in the first conductive region 232-1. Accordingly, the first inductive trace 234-1 does not have a first trace segment S11 extending into the first gap 235-1, but only has a second trace segment S12 disposed between the first conductive region 232-1 and the second conductive region 232-2.

[0083] Therefore, in Figure 5b In the LC resonant circuit 200 shown, Figure 3b The first LC parallel resonant circuit 210 shown in FIG. 2 is omitted, and the first inductive trace 234-1 may be equivalent to or may be regarded as a second inductor L2 connected between the first conductive region 232-1 and the second conductive region 232-2. Since the radiation arm 11 may be the same as the radiation arm 11 discussed above in other aspects, further description thereof is omitted.

[0084] Figure 6a An enlarged front view showing a portion of a radiation arm 11 of a radiator 10 of a first frequency band radiation element 121 according to other embodiments of the present disclosure, which is similar to Figure 3a The difference is that an additional coupling region 233 is additionally shown disposed on the back side of the dielectric substrate 238. The additional coupling region is connected to the first trace segment S21 of the second inductive trace 236-1 through, for example, a plated through hole extending through the dielectric substrate 238. Figure 6b Shows Figure 6a Schematic diagram of the LC resonant circuit 200 formed by the first inductive trace 234-1 and the second inductive trace 236-1 and the first conductive region 232-1, the second conductive region 232-2 and the additional coupling region 233.

[0085] and Figure 3a The main difference of the embodiment shown is that Figure 6aIn the embodiment of the radiating arm 11 shown, an additional coupling region 233 capacitively coupled to the second conductive region 232-2 is provided on the second side 238-2 (here, the back side) of the dielectric substrate 238 of the radiating arm 11. The first trace segment S21 of the second inductive trace 236-1 can be electrically connected to the additional coupling region 233 via the first conductive structure passing through the dielectric substrate 238. Figure 6a In the embodiment, the end S29 of the first trace segment S21 of the second inductive trace 236-1 may be electrically connected to the additional coupling region 233 via a first conductive structure passing through the dielectric substrate 238. Here, the first conductive structure may include a metallized via or a conductive pin.

[0086] Therefore, in Figure 6b In the LC resonant circuit 200 shown in FIG. Figure 3b A third capacitor C3 is additionally connected in series to the second LC parallel resonant circuit 220 shown in FIG. Since the radiation arm 11 may be the same as the radiation arm 11 discussed above in other aspects, further description thereof is omitted.

[0087] It should be understood that in some embodiments not shown, alternatively or additionally, an additional coupling region capacitively coupled to the first conductive region 232-1 may be provided on the second side 238-2 (here, the back side) of the dielectric substrate 238 of the radiating arm 11. Figure 3b In addition, a further capacitor is connected in series to the first LC parallel resonant circuit 210 shown in FIG.

[0088] Figure 7a FIG. 1 is an enlarged front view of a portion of a radiation arm 11 of a radiator 10 of a first frequency band radiation element 121 according to other embodiments of the present disclosure, which is similar to FIG. Figure 3a The main difference is that different first inductive trace 234-1 and second inductive trace 236-1 are shown. Figure 7b Shows Figure 7a Schematic diagram of the LC resonant circuit 200 formed by the first inductive trace 234-1 and the second inductive trace 236-1 and the first conductive region 232-1 and the second conductive region 232-2.

[0089] and Figure 5a The main difference of the embodiment shown is that Figure 7aIn the embodiment of the radiating arm 11 shown, a first gap 235-1 from which metal is removed is provided in the first conductive region 232-1, and the first inductive trace 234-1 has a first trace segment S11 extending into the first gap 235-1, and the first trace segment S11 is arranged in the first gap 235-1 at a distance from the first conductive region 232-1. The first trace segment S11 can be set as a trace segment extending in a straight line. The end S19 of the first trace segment S11 can be set to be physically connected to the first conductive region 232-1. In addition, a second gap 235-4 from which metal is removed is provided in the second conductive region 232-2, and the second gap 235-4 can be set as a gap extending in a linear manner. The first inductive trace 234-1 has a third trace segment S13 extending into the second gap 235-4, and the third trace segment S13 of the first inductive trace 234-1 is arranged in the second gap 235-4 at a distance from the second conductive area 232-2. The third trace segment S13 of the first inductive trace 234-1 can be set as a trace segment extending in a straight line. The end S18 of the third trace segment S13 of the first inductive trace 234-1 can be set to be physically connected to the second conductive area 232-2. In addition, the first inductive trace 234-1 has a fourth trace segment S14 for directly physically connecting the first trace segment S11 with the third trace segment S13. The fourth trace segment S14 can be set as a trace segment extending in a straight line (not shown) or a trace segment extending in a bent manner (see Figure 7a Similarly, a gap 237-4 from which metal is removed may be provided in the first conductive region 232-1, and the second inductive trace 236-1 may have a third trace segment S23 extending into the gap 237-4. The third trace segment S23 is arranged in the gap 237-4 at a distance from the first conductive region 232-1. The third trace segment S23 may be provided as a trace segment extending in a straight line (see Figure 7a ) or a bent and extended trace segment (not shown). The end S29 of the third trace segment S23 may be arranged to be physically connected to the first conductive region 232-1. Since the radiation arm 11 may be the same as the radiation arm discussed above in other aspects, further description thereof is omitted.

[0090] Therefore, in Figure 7b In the LC resonant circuit 200 shown in FIG. Figure 5b The second inductor L2 utilizes Figure 7a The fourth trace segment S14 in the circuit is replaced by another inductor L7, and another LC parallel resonant circuit 230, 240 is connected in series at both ends of the inductor L7, and Figure 5bAnother LC parallel resonant circuit 250 is connected in series to one end of the fourth inductor L4. Here, the LC parallel resonant circuit 220 is formed by connecting the third inductor L3 and the second capacitor C2 in parallel. The LC parallel resonant circuit 230 is formed by connecting the first inductor L1 and the first capacitor C1 in parallel. The LC parallel resonant circuit 240 is formed by connecting the fifth inductor L5 and the fourth capacitor C4 in parallel. The LC parallel resonant circuit 250 is formed by connecting the sixth inductor L6 and the fifth capacitor C5 in parallel.

[0091] Figure 8 FIG. 1 is an enlarged front view of a portion of a radiation arm 11 of a first frequency band radiation element 121 according to some other embodiments of the present disclosure, which is similar to FIG. Figure 3a The difference is noted in that an additional inductive trace 239 disposed on the back side of the dielectric substrate 238 is additionally shown.

[0092] and Figure 3a The main difference of the embodiment shown is that Figure 8 In the embodiment of the radiating arm 11 shown, an additional inductive trace 239 is arranged on the second side 238-2 (here the back side) of the dielectric substrate 238 of the radiating arm 11. The first trace segment S21 of the second inductive trace 236-1 can be galvanically connected to the additional inductive trace 239 via a third conductive structure passing through the dielectric substrate 237. Figure 8 In the embodiment, the end S29 of the first trace segment S21 of the second inductive trace 236-1 may be galvanically connected to the end S30 of the additional inductive trace 239 via a third conductive structure passing through the dielectric substrate 237. Here, the third conductive structure may include a metallized via or a conductive pin.

[0093] Therefore, in Figure 8 In the corresponding LC resonant circuit 200, it is equivalent to Figure 3b An inductor is additionally connected in series to the second LC parallel resonant circuit 220 shown in FIG. Thus, the inductance can be further enhanced. Since the radiation arm 11 can be the same as the radiation arm 11 discussed above in other aspects, further description thereof is omitted.

[0094] like Figure 8 As shown, the additional inductive trace 239 on the back side of the dielectric substrate 238 of the radiating arm 11 may extend in the same direction as the second inductive trace 236-1. Alternatively, the additional inductive trace 239 may extend in the opposite direction to the second inductive trace 236-1, that is, may be folded back under the second inductive trace 236-1.

[0095] It should be understood that, alternatively or additionally, an additional inductive trace electrically connected to the first inductive trace 234 - 1 may be provided on the second side 238 - 2 (here, the back side) of the dielectric substrate 238 of the radiating stub 11 .

[0096] Fig. 9 FIG. 1 is an enlarged front view of a portion of a radiation arm 11 of a first frequency band radiation element 121 according to some other embodiments of the present disclosure, which is similar to FIG. Figure 3a The main difference is that different first and second inductive traces are shown.

[0097] and Figure 3a The main difference of the embodiment shown is that Fig. 9 In the embodiment of the radiating arm 11 shown, the first inductive trace 234-1 has a third trace segment S13 extending into the second gap 235-4, and the third trace segment S13 of the first inductive trace 234-1 is arranged in the second gap 235-4 at a distance from the second conductive region 232-2. The third trace segment S13 of the first inductive trace 234-1 can be set as a trace segment that extends in a meander. The end S18 of the third trace segment S13 of the first inductive trace 234-1 can be set to be spaced apart from the second conductive region 232-2. In addition, the first inductive trace 234-1 has a fourth trace segment S14 for directly physically connecting the first trace segment S11 with the third trace segment S13. The fourth trace segment S14 can be set as a trace segment that extends in a straight line (not shown) or a trace segment that extends in a meander (see Fig. 9 ).

[0098] exist Fig. 9 In the embodiment, Figure 3a Another difference of the illustrated embodiment is that the second inductive trace 236-1 has only a second trace segment S22 disposed between the first conductive region 232-1 and the second conductive region 232-2. Fig. 9 In the embodiment of FIG. 2 , the second inductive trace 236 - 1 may also be constructed similarly to the first inductive trace 234 - 1 .

[0099] Fig.10 is a perspective view of a first frequency band radiation element 121 according to some other embodiments of the present disclosure. Figure 2a The embodiment is different in that, Fig.10As shown, the first frequency band radiating element 121 may be configured as a box-type dipole radiating element. The box-type dipole radiating element may have four box-type radiating arms 11-14, and at least one of the four radiating arms 11-14 may be configured as the radiating arm 11 in the above-mentioned embodiments. Since the radiating arms 11-14 may be the same as the radiating arm 11 discussed above in other aspects, further description thereof is omitted.

[0100] Here, it should be recognized that in addition to Figure 2a The crossed dipole radiating element 121 and Fig.10 Radiating elements other than the box dipole radiating element 121 shown in the figure may be used to implement the base station antenna 100 in other embodiments. For example, in other embodiments, the cross-dipole radiating element 121 or the box dipole radiating element 121 may be replaced with a ring radiating element not shown. Any other suitable type of radiating element may also be used. Likewise, it should also be understood that the first frequency band radiating element 121 in the linear arrays 120-1 to 120-2 need not be a low frequency band radiating element, but may be a radiating element operating in other frequency bands.

[0101] Although the exemplary radiating arms 11-14 including a total of two inductive traces 234, 236 to connect each pair of adjacent conductive areas 232 are shown in the above embodiments, it should be understood that any number of inductive traces (or other types of inductive traces) may be used, including three inductive traces, four inductive traces, five inductive traces, six inductive traces, etc. In addition, it should be understood that different numbers of inductive traces may be used to connect each pair of adjacent conductive areas 232.

[0102] Although the exemplary embodiments of the present disclosure have been described, it should be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the scope of protection of the present disclosure as defined by the claims. The present disclosure is defined by the appended claims, and the equivalents of these claims are also included.

Claims

1. A radiating element for a base station antenna, the radiating element being capable of operating within a first frequency band, characterized in that: The radiating element has a radiator, the radiator comprising a first radiating arm and a second radiating arm, wherein at least one of the first radiating arm and the second radiating arm comprises: a first conductive region; a second conductive region, the second conductive region being spaced apart from the first conductive region by a distance; a first inductive trace for electrically connecting the first conductive region and the second conductive region; A first gap from which metal is removed is provided in the first conductive region, the first inductive trace has a first trace segment extending into the first gap, and the first trace segment is arranged in the first gap at a distance from the first conductive region.

2. The radiating element for a base station antenna according to claim 1, characterized in that: A first trace segment of the first inductive trace is capacitively coupled to the first conductive region; and / or An LC resonant circuit is formed by the first inductive trace itself and the capacitive coupling between the first trace segment and the first conductive region, wherein the LC resonant circuit is configured to allow current within a first frequency band to pass through, while at least partially suppressing current within a second frequency band different from the first frequency band; and / or The inductance value of the first inductive trace can be adjusted by changing the width, length and / or direction of the first inductive trace; and / or The average width of the first inductive trace is less than one fifth of the average width of the first conductive region and / or the second conductive region; and / or At least a portion of the first inductive trace is arranged to extend in a meandering manner.

3. The radiating element for a base station antenna according to claim 1 or 2, characterized in that: forming a first capacitor between the first trace segment and the first conductive region; and / or The first trace segment forms a first inductor, the first inductor forming a first LC parallel resonant circuit with a first capacitor; and / or The first gap has the same orientation as the first trace segment; and / or The first gap is configured as a linearly extending gap, or as a bent extending gap; and / or the first trace segment is configured as a trace segment extending in a straight line or a trace segment extending in a bent line; and / or An end of the first trace segment is physically connected to or spaced apart from the first conductive region.

4. The radiating element for a base station antenna according to any one of claims 1 to 3, characterized in that: The at least one of the first radiating arm and the second radiating arm comprises a dielectric substrate having a first side where the first trace segment is located and a second side opposite to the first side, on which a first additional coupling region capacitively coupled to the first conductive region is disposed; and / or The first trace segment is electrically connected to a first additional coupling region via a first conductive structure passing through the dielectric substrate; and / or An end of the first trace segment is electrically connected to a first additional coupling region via a first conductive structure passing through the dielectric substrate; and / or The first conductive structure includes a metallized via or a conductive needle.

5. The radiating element for a base station antenna according to any one of claims 1 to 4, characterized in that: The first inductive trace has a second trace segment for directly physically connecting the first trace segment to the second conductive region; and / or The second trace segment is configured as a trace segment extending in a straight line or a trace segment extending in a bent line; and / or A second gap from which metal is removed is provided in the second conductive area, the first inductive trace has a third trace segment extending into the second gap, and the third trace segment is arranged in the second gap at a distance from the second conductive area; and / or forming a second capacitor between the third trace segment and the second conductive region; and / or The third trace segment forms a second inductor, the second inductor and the second capacitor forming a second LC parallel resonant circuit; and / or The second gap has the same course as that of the third trace segment.

6. The radiating element for a base station antenna according to any one of claims 1 to 5, characterized in that: The third trace segment is configured as a trace segment extending in a straight line or a trace segment extending in a bent line; and / or The distal end of the third trace segment is physically connected to or spaced apart from the second conductive region; and / or The at least one of the first radiating arm and the second radiating arm comprises a dielectric substrate, the dielectric substrate having a first side where the third trace segment is located and a second side opposite to the first side, a second additional coupling region capacitively coupled to the second conductive region being disposed on the second side; and / or The third trace segment is electrically connected to the second additional coupling region via a second conductive structure passing through the dielectric substrate.

7. The radiating element for a base station antenna according to any one of claims 1 to 6, characterized in that: An end of the third trace segment is electrically connected to a second additional coupling region via a second conductive structure passing through the dielectric substrate; and / or The second conductive structure includes a metallized via or a conductive needle; and / or The first inductive trace has a fourth trace segment for directly physically connecting the first trace segment with the third trace segment; and / or The fourth trace segment is configured as a trace segment extending in a straight line or a trace segment extending in a bent line; and / or The at least one of the first radiating arm and the second radiating arm includes a second inductive trace spaced apart from the first inductive trace for electrically connecting the first conductive region and the second conductive region.

8. The radiating element for a base station antenna according to any one of claims 1 to 7, characterized in that: A third gap from which metal is removed is provided in the first conductive region, the second inductive trace has a first trace segment extending into the third gap, and the first trace segment of the second inductive trace is arranged in the third gap at a distance from the first conductive region; and / or a fourth gap from which metal is removed is provided in the second conductive region, the second inductive trace has a second trace segment extending into the fourth gap, and the second trace segment of the second inductive trace is arranged in the fourth gap at a distance from the second conductive region; and / or The second inductive trace and the first inductive trace are connected in parallel with each other between the first conductive region and the second conductive region.

9. The radiating element for a base station antenna according to any one of claims 1 to 8, characterized in that: The radiating element is a dual-polarization radiating element, and the dual-polarization radiating element includes a cross-dipole radiating element and a box-type dipole radiating element.

10. A base station antenna, characterized in that: The base station antenna comprises a radiation element for a base station antenna according to any one of claims 1 to 9.

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