Radiating unit, antenna and base station
By designing polarized orthogonal dipole structure and capacitive coupling connection in the radiation unit of the base station antenna, the insufficient signal coverage and radiation pattern distortion caused by high base station antenna frequency in the 5G era are solved, and better signal coverage and antenna directionality are achieved.
Patent Information
- Application Number
- CN202510297688.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2025-05-02
AI Technical Summary
In the 5G era, the frequency of base station antennas is getting higher and higher, resulting in increased space loss and insufficient signal coverage. Base station antennas of different standards and different frequency bands coexist for a long time, resulting in serious interference from heterofrequency coupling and serious distortion of antenna radiation patterns.
A radiation unit is designed, including two dipoles arranged orthogonally in polarization, each dipole comprising two radiation single arms arranged oppositely, each radiation single arms arranged symmetrically around. A first line and a second line are provided in the radiation single arm, and a first capacitor plate and a second capacitor plate are respectively provided at both ends of the circuit, and are coupled through a capacitor plate to control electromagnetic coupling to reduce intermediate frequency scattering.
Through this design, the intermediate frequency scattering generated on the low-frequency radiation unit is significantly reduced, the distortion of the intermediate frequency pattern of the multi-frequency common diameter antenna is reduced, and the radiation directionality and overall performance of the antenna are improved.
Smart Images
Figure CN119921086A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of communication technology, and in particular to a radiation unit, an antenna and a base station. Background Art
[0002] With the advent of the 5G era, the frequency of base station antennas is getting higher and higher, and the space loss is increasing. In order to ensure signal coverage, the number of base stations is bound to increase. At the same time, since 2G / 3G / 4G still has special scene requirements, base station antennas of different standards and frequency bands will coexist for a long time. In order to save costs, it is necessary to make full use of the existing base station site resources, integrate the 5G base station antenna with the original 2G / 3G / 4G base station antenna, and realize the fusion design of multi-band and multi-standard base station antennas. Fusion design means that 2G / 3G / 4G / 5G base station antennas share a reflector and antenna cover, and achieve signal coverage of multiple network standards without adding additional base station antenna equipment, space, and occupied area, thereby greatly alleviating the shortage of base station site resources and reducing the operating costs of operators. In traditional multi-frequency antennas, antennas of different frequency bands are placed in the same antenna cover. Therefore, there is serious hetero-frequency coupling interference between antennas, which leads to serious distortion of antenna radiation patterns. Summary of the invention
[0003] Based on this, it is necessary to provide a radiation unit, an antenna and a base station that can reduce the distortion of the antenna radiation pattern in order to solve the above technical problems.
[0004] In a first aspect, the present application proposes a radiation unit, comprising: two dipoles arranged with polarization orthogonal, each of the dipoles comprising two radiating arms arranged opposite to each other, and each of the radiating arms being arranged in a symmetrical manner; the radiating arms comprising: a first circuit and a second circuit, a first capacitor sheet being respectively arranged at both ends of the first circuit, a second capacitor sheet being respectively arranged at both ends of the second circuit, the first circuit being arranged on one side of a dielectric substrate, the second circuit being arranged on the other side of the dielectric substrate, and the first capacitor sheet being coupled and connected to the second capacitor sheet.
[0005] In one embodiment, the first circuit includes: two first conductor circuits which are symmetrically arranged, one ends of the two first conductor circuits are connected, and the other ends of the two first conductor circuits are connected to the first capacitor plate.
[0006] In one embodiment, the first conductor line includes: a first conductor segment, a second conductor segment, a third conductor segment, a first resonant line and a second resonant line, the first resonant line is respectively connected to the first conductor segment and the second conductor segment, the second resonant line is respectively connected to the second conductor segment and the third conductor segment, and the third conductor segment is connected to the first capacitor.
[0007] In one embodiment, the first conductor segment, the second conductor segment and the third conductor segment are configured as a hollow structure, and the first resonant line and the second resonant line are configured as a reciprocating bending structure.
[0008] In one embodiment, the second circuit includes: two second conductor circuits which are symmetrically arranged, one ends of the two second conductor circuits are connected, and the other ends of the two second conductor circuits are connected to the second capacitor plate.
[0009] In one embodiment, the second conductor line includes: a fourth conductor segment, a fifth conductor segment, a sixth conductor segment, a third resonant line and a fourth resonant line, the third resonant line is respectively connected to the fourth conductor segment and the fifth conductor segment, the fourth resonant line is respectively connected to the fifth conductor segment and the sixth conductor segment, and the sixth conductor segment is connected to the second capacitor.
[0010] In one of the embodiments, the radiation unit further includes: a third line, the third line is arranged on one side of the dielectric substrate, and one ends of the two second conductor lines are coupled and connected via the third line.
[0011] In one embodiment, the fourth conductor segment, the fifth conductor segment and the sixth conductor segment are configured as hollow structures, and the third resonant line and the fourth resonant line are configured as reciprocating bending structures.
[0012] In a second aspect, the present application further proposes an antenna, comprising: two orthogonally placed baluns, a feed board, and a radiation unit as described in the embodiment of the first aspect, wherein the two baluns are respectively connected to the feed board and the radiation unit.
[0013] In a third aspect, the present application further proposes a base station, comprising: an antenna as described in the embodiment of the second aspect.
[0014] The above-mentioned radiation unit, antenna and base station are configured by arranging two dipoles in the radiation unit in a polarization orthogonal manner, and each dipole includes two radiation arms arranged opposite to each other, and each radiation arm is arranged in a symmetrical manner. A first capacitor is arranged at both ends of a first line in the radiation arm, and a second capacitor is arranged at both ends of a second line, so that the first line and the second line are coupled and connected through the capacitor. When the radiation unit is applied to a low-frequency antenna, the intermediate frequency scattering generated on the low-frequency radiation unit can be significantly reduced, thereby reducing the distortion of the intermediate frequency radiation pattern of the multi-frequency common-aperture antenna. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0016] Figure 1 is a schematic diagram of a radiation unit in one embodiment;
[0017] Figure 2 is an exploded view of a radiation unit in one embodiment;
[0018] Figure 3 is a schematic diagram of a first circuit in an embodiment;
[0019] Figure 4 A schematic diagram of a hollow structure in one embodiment;
[0020] Figure 5 is a schematic diagram of a hollow structure in another embodiment;
[0021] Figure 6 is a schematic diagram of a hollow structure in yet another embodiment;
[0022] Figure 7 A schematic diagram of a hollow structure in yet another embodiment;
[0023] Figure 8 is a schematic diagram of a second circuit in one embodiment;
[0024] Fig. 9 is an exploded view of a radiation unit in another embodiment;
[0025] Fig.10 is a schematic diagram of a third circuit in one embodiment;
[0026] Fig.11 is a schematic diagram of a second circuit in another embodiment;
[0027] Fig.12 1 is a radiation pattern of a conventional radiation unit and a radiation pattern of the present application in one embodiment;
[0028] Fig.13 FIG. 4 is a schematic diagram of an antenna in one embodiment.
[0029] Description of reference numerals:
[0030] The first radiating arm 101, the second radiating arm 102, the third radiating arm 103, the fourth radiating arm 104, the first line 100, the second line 200, the first capacitor 300, the second capacitor 400, the dielectric substrate 500, the hollow area 600, the third line 700, the balun 810, the feeding board 820, the radiation unit 830, the first conductor line 110, the first conductor segment 111, the second conductor segment 112, the third conductor segment 113, the first resonant line 114, the second resonant line 115, the second conductor line 210, the fourth conductor segment 211, the fifth conductor segment 212, the sixth conductor segment 213, the third resonant line 214, and the fourth resonant line 215. DETAILED DESCRIPTION
[0031] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0033] It can be understood that the terms "first", "second", etc. used in the present application can be used in this article to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.
[0034] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. In addition, the "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if there is transmission of electrical signals or data between the connected objects.
[0035] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.
[0036] In one embodiment, Figure 1 and Figure 2 As shown, a radiation unit is provided, including: two dipoles arranged with polarization orthogonal, each dipole including two radiation arms arranged opposite to each other, and each radiation arm is arranged in a symmetrical manner; the radiation arm includes: a first line 100 and a second line 200, a first capacitor sheet 300 is respectively arranged at both ends of the first line 100, and a second capacitor sheet 400 is respectively arranged at both ends of the second line 200, the first line 100 is arranged on one side of a dielectric substrate 500, and the second line 200 is arranged on the other side of the dielectric substrate 500, and the first capacitor sheet 300 is coupled to the second capacitor sheet 400.
[0037] Specifically, the radiation unit of the embodiment of the present application is used to transmit and receive electromagnetic waves, and it can be in the form of a patch, a slot line, etc. The radiation unit is composed of two dipoles with orthogonal polarizations, that is, the radiation directions of the two dipoles are perpendicular to each other, and it can be arranged in a cross shape or an L shape. Each dipole includes two radiation arms arranged opposite to each other, and each radiation arm is arranged symmetrically around. For example, Figure 1 The first radiation arm 101 and the second radiation arm 102 constitute a first dipole, the third radiation arm 103 and the fourth radiation arm 104 constitute a second dipole, and the radiation directions of the first dipole and the second dipole are perpendicular to each other. It can be understood that the structures of the radiation arms in the radiation unit are the same, so the specific structure of one of the radiation arms is taken as an example for detailed description.
[0038] like Figure 2 As shown, the radiation single arm includes: a first line 100 and a second line 200, a first capacitor sheet 300 is respectively arranged at both ends of the first line 100, and a second capacitor sheet 400 is respectively arranged at both ends of the second line 200. The capacitor sheet can be set as a metal sheet structure, which can be set as a rectangle, a circle or other irregular shapes. The first line 100 is set on one side of the dielectric substrate 500, and the second line 200 is set on the other side of the dielectric substrate 500. The first capacitor sheet 300 and the second capacitor sheet 400 at the corresponding position are coupled and connected, so that the first line 100 and the second line 200 are connected.
[0039] When the electromagnetic wave reaches the radiation unit, it will stimulate current on the first line 100 and the second line 200 respectively. Since the two lines are located on different sides of the dielectric substrate 500, there is a certain electromagnetic coupling between them. By adjusting the shape and size of the two lines, the strength and characteristics of this coupling can be controlled. At the same time, the capacitors set at both ends of the line can further adjust this coupling effect of different frequencies. The size and shape of the capacitor can be adjusted to achieve selective response to electromagnetic waves in different frequency bands. By reasonably designing the size and shape of the capacitor, a strong capacitive coupling can be formed in a specific frequency band, while a weaker coupling is shown in other frequency bands. This frequency selectivity helps to reduce interference between different frequency bands while maintaining the good performance of the antenna in the target frequency band. At the same time, by setting the first capacitor 300 and the second capacitor 400, when the radiation unit is applied to a low-frequency antenna, the intermediate frequency scattering generated on the low-frequency radiation unit can be significantly reduced, thereby reducing the distortion of the intermediate frequency pattern of the multi-frequency common aperture antenna.
[0040] In one embodiment, Figure 3 As shown, the first circuit 100 includes: two first conductor circuits 110 which are symmetrically arranged, one ends of the two first conductor circuits 110 are connected, and the other ends of the two first conductor circuits 110 are connected to the first capacitor plate 300 .
[0041] Specifically, the first line 100 includes two symmetrically arranged first conductor lines 110, one end of the two conductor lines is connected to form a closed loop, and the other end is connected to the first capacitor sheet 300. The main axes of the two first conductor lines 110 can be arranged perpendicular to each other. When one end of the two first conductor lines 110 is connected, it can be directly electrically connected or coupled. When the other end of the two first conductor lines 110 is connected to the first capacitor sheet 300, it can be directly electrically connected, connected through a microstrip line, or connected through a transition structure. The two first conductor lines 110 are set to the same length and width. For example, the length can be one-quarter of the working wavelength, the width can be adjusted according to the required impedance characteristics, and the size and shape of the first capacitor sheet 300 can also be optimized as needed to achieve the best coupling effect. The symmetrical structure of the first line 100 of this embodiment ensures the balance of radiation performance and reduces the distortion of the radiation pattern. At the same time, the two symmetrically arranged first conductor lines 110 increase the current path, and the increased current path can improve the radiation efficiency and help improve the overall performance of the antenna.
[0042] In one embodiment, Figure 3As shown, the first conductor line 110 includes: a first conductor segment 111, a second conductor segment 112, a third conductor segment 113, a first resonant line 114 and a second resonant line 115, the first resonant line 114 is respectively connected to the first conductor segment 111 and the second conductor segment 112, the second resonant line 115 is respectively connected to the second conductor segment 112 and the third conductor segment 113, and the third conductor segment 113 is connected to the first capacitor plate 300.
[0043] Specifically, in this embodiment, the first conductor line 110 is composed of a structure composed of a plurality of conductor segments and a resonant line. The first conductor segment 111, the second conductor segment 112 and the third conductor segment 113 can be set to different lengths and widths to adjust the current distribution. For example, the first conductor segment 111 can be designed to be longer to increase the radiation efficiency; the second conductor segment 112 can be designed to be shorter to adjust the impedance; the third conductor segment 113 can be designed according to the connection requirements with the first capacitor sheet 300. The first resonant line 114 and the second resonant line 115 can also adopt a serpentine structure or a spiral structure, etc., which can achieve a longer electrical length in a limited space, thereby adjusting the resonant frequency. The first resonant line 114 and the second resonant line 115 can be equivalent to a parallel LC circuit. The connection method between the conductor segment and the resonant line can also be adjusted. For example, the first resonant line 114 can vertically connect the first conductor segment 111 and the second conductor segment 112, or the first resonant line 114 can obliquely connect the first conductor segment 111 and the second conductor segment 112. Different connection methods can affect the flow path of the current, thereby affecting the radiation characteristics. The design of multiple conductor segments in this embodiment can control current distribution more flexibly, and can provide additional frequency adjustment capabilities by setting a resonant line. At the same time, when the radiating unit is applied to a low-frequency antenna, the intermediate frequency scattering generated on the low-frequency radiating unit can be significantly reduced, thereby reducing the distortion of the intermediate frequency radiation pattern of the multi-frequency common aperture antenna.
[0044] In one embodiment, the first conductor segment 111, the second conductor segment 112, and the third conductor segment 113 are configured as a hollow structure. Specifically, configuring the first conductor segment 111, the second conductor segment 112, and the third conductor segment 113 as a hollow structure can reduce the use of metal materials and reduce the weight of the antenna. At the same time, it can also improve the electromagnetic performance of the antenna, such as reducing the Q value of the antenna and widening the working bandwidth of the antenna. The hollow structure can be implemented in a variety of ways, such as using a grid, honeycomb, or other regular or irregular open structure. The hollow structures of different conductor segments can be the same or different, and the hollow structure can be selected according to specific application requirements and electromagnetic performance requirements. For example, Figure 4 As shown, the hollow structure is formed by a hollow area 600 in a conductor segment which is arranged in a rectangular shape; Figure 5 As shown, the hollow structure is formed by a hollow area 600 arranged in a T-shape in the conductor segment; Figure 6 As shown, the hollow structure is formed by two symmetrical L-shaped hollow areas 600 in the conductor segment; Figure 7 As shown, the hollow structure is formed by a hollow area 600 arranged in an I-shape in the conductor segment.
[0045] In one embodiment, the first resonant line 114 and the second resonant line 115 are configured as a reciprocating bending structure. Specifically, after the first resonant line 114 and the second resonant line 115 are configured as a reciprocating bending structure, the line length can be increased within a limited space, thereby achieving a lower resonant frequency. This structural design can adjust the inductance and capacitance of the antenna, thereby optimizing the impedance matching of the antenna. The reciprocating bending structure can take a variety of forms, such as S-shaped, Z-shaped or other zigzag shapes, to adapt to different space limitations and electrical performance requirements.
[0046] In one embodiment, Figure 8 As shown, the second circuit 200 includes: two second conductor circuits 210 which are symmetrically arranged, one ends of the two second conductor circuits 210 are connected, and the other ends of the two second conductor circuits 210 are connected to the second capacitor plate 400 .
[0047] Specifically, the second line 200 includes two symmetrically arranged second conductor lines 210, one end of the two conductor lines is connected to form a closed loop, and the other end is connected to the second capacitor plate 400. The main axes of the two second conductor lines 210 can be arranged perpendicular to each other. When one end of the two second conductor lines 210 is connected, it can be directly electrically connected or coupled. When the other end of the two second conductor lines 210 is connected to the second capacitor plate 400, it can be directly electrically connected, connected through a microstrip line, or connected through a transition structure. The two second conductor lines 210 are set to the same length and width. For example, the length can be one-quarter of the working wavelength, the width can be adjusted according to the required impedance characteristics, and the size and shape of the second capacitor plate 400 can also be optimized as needed to achieve the best coupling effect. The symmetrical structure of the second line 200 of this embodiment ensures the balance of radiation performance and reduces the distortion of the radiation pattern. At the same time, the two symmetrically arranged second conductor lines 210 increase the current path, and the increased current path can improve the radiation efficiency and help improve the overall performance of the antenna.
[0048] In one embodiment, Figure 8 As shown, the second conductor line 210 includes: a fourth conductor segment 211, a fifth conductor segment 212, a sixth conductor segment 213, a third resonant line 214 and a fourth resonant line 215, the third resonant line 214 is respectively connected to the fourth conductor segment 211 and the fifth conductor segment 212, the fourth resonant line 215 is respectively connected to the fifth conductor segment 212 and the sixth conductor segment 213, and the sixth conductor segment 213 is connected to the second capacitor plate 400.
[0049] Specifically, in this embodiment, the second conductor line 210 is composed of a structure composed of a plurality of conductor segments and a resonant line. The fourth conductor segment 211, the fifth conductor segment 212 and the sixth conductor segment 213 can be set to different lengths and widths to adjust the current distribution. For example, the fourth conductor segment 211 can be designed to be longer to increase the radiation efficiency; the fifth conductor segment 212 can be designed to be shorter to adjust the impedance; the sixth conductor segment 213 can be designed according to the connection requirements with the second capacitor plate 400. The third resonant line 214 and the fourth resonant line 215 can also adopt a serpentine structure or a spiral structure, etc., which can achieve a longer electrical length in a limited space, thereby adjusting the resonant frequency. The third resonant line 214 and the fourth resonant line 215 can be equivalent to a parallel LC circuit. The connection method between the conductor segments and the resonant lines can also be adjusted. For example, the third resonant line 214 can vertically connect the fourth conductor segment 211 and the fifth conductor segment 212, or the third resonant line 214 can obliquely connect the fourth conductor segment 211 and the fifth conductor segment 212. Different connection methods can affect the flow path of the current, thereby affecting the radiation characteristics. The design of the multi-segment conductor segment of this embodiment can control the current distribution more flexibly, and can provide additional frequency adjustment capabilities by setting the resonant line. At the same time, when the radiating unit is applied to a low-frequency antenna, the intermediate frequency scattering generated on the low-frequency radiating unit can be significantly reduced, thereby reducing the distortion of the intermediate frequency radiation pattern of the multi-frequency common aperture antenna.
[0050] In one embodiment, Fig. 9 As shown, the radiation unit further includes: a third line 700 , which is disposed on one side of the dielectric substrate 500 , and one end of the two second conductor lines 210 is coupled and connected via the third line 700 .
[0051] Specifically, one end of the two second conductor lines 210 in this embodiment is coupled and connected via a third line 700. In this configuration, Fig.10 As shown, the first circuit 100 and the third circuit 700 are both arranged on one side of the dielectric substrate 500. Fig.11As shown, there is an interruption between two second conductor lines 210 in the second line 200 on the other side of the dielectric substrate 500, which are coupled and connected by a third line 700. The shape and structure of the third line 700 can be set according to the shape and structure of the interruption area between the two second conductor lines 210. In some embodiments, the third line 700 is set to an isosceles right triangle. By setting the third line 700, the present embodiment can realize a flexible connection between the two second conductor lines 210. By adjusting the position, shape and connection method of the third line 700, the electromagnetic relationship between the two second conductor lines 210 can be more flexibly controlled, thereby optimizing the performance of the radiation unit. At the same time, the coupling connection method can improve the electrical characteristics of the radiation unit, such as bandwidth, efficiency and directivity.
[0052] In one embodiment, the fourth conductor segment 211, the fifth conductor segment 212 and the sixth conductor segment 213 are set as a hollow structure, and the third resonant line 214 and the fourth resonant line 215 are set as a reciprocating bending structure. Specifically, setting the fourth conductor segment 211, the fifth conductor segment 212 and the sixth conductor segment 213 as a hollow structure can reduce the use of metal materials and reduce the weight of the antenna. At the same time, it can also improve the electromagnetic performance of the antenna, such as reducing the Q value of the antenna and widening the working bandwidth of the antenna. The hollow structure can be implemented in many ways, such as using a grid-like, honeycomb-like or other regular or irregular open hole structure. The hollow structures of different conductor segments can be the same or different, and the hollow structure can be selected according to specific application requirements and electromagnetic performance requirements.
[0053] In one embodiment, the third resonant line 214 and the fourth resonant line 215 are configured as a reciprocating bending structure. Specifically, after the third resonant line 214 and the fourth resonant line 215 are configured as a reciprocating bending structure, the line length can be increased within a limited space, thereby achieving a lower resonant frequency. This structural design can adjust the inductance and capacitance of the antenna, thereby optimizing the impedance matching of the antenna. The reciprocating bending structure can take a variety of forms, such as S-shaped, Z-shaped or other zigzag shapes, to adapt to different space limitations and electrical performance requirements.
[0054] The advantages of the radiation unit of the present application are described in detail below with a specific embodiment. Fig. 9 Taking the radiation unit shown in FIG. 1 as an example, the radiation unit is provided with a first line 100, a second line 200 and a third line 700. Fig.12 As shown, Fig. 9 When the radiating unit shown is applied to a low-frequency radiating arm, the directional pattern of the intermediate-frequency scattering generated is significantly suppressed compared to the traditional radiating unit, and has stronger directivity, reducing the impact on other (high-frequency) radiating units.
[0055] In one embodiment, Fig.13 As shown, the present application also provides an antenna, including: two orthogonally placed baluns 810, a feed plate 820 and the radiation unit 830 in the above embodiment, and the two baluns 810 are respectively connected to the feed plate 820 and the radiation unit 830. Specifically, in the antenna proposed in the present application, the two orthogonally placed baluns 810 can be implemented in a variety of ways. For example, a microstrip balun, a slot balun or a coaxial balun can be used, and the orthogonal placement can be vertical crossing or parallel staggered. The feed plate 820 can be made of a printed circuit board, on which an appropriate feeding network can be designed to achieve signal distribution and phase adjustment. The antenna of this embodiment arranges two dipoles in a polarization orthogonal manner in the radiation unit 830, and each dipole includes two radiation arms arranged opposite to each other, and each radiation arm is arranged in a symmetrical manner. By arranging a first capacitor plate 300 at both ends of the first line 100 in the radiation arm, and arranging a second capacitor plate 400 at both ends of the second line 200, the first line 100 and the second line 200 are coupled and connected through the capacitor plate. When the radiation unit 830 is applied to a low-frequency antenna, the intermediate frequency scattering generated on the low-frequency radiation unit 830 can be significantly reduced, thereby reducing the distortion of the intermediate frequency radiation pattern of the multi-frequency common-aperture antenna.
[0056] In one embodiment, the present application further provides a base station, comprising the antenna in the above embodiment.
[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.
[0058] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0059] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A radiation unit, characterized in that: include: Two dipoles arranged with orthogonal polarization, each of the dipoles comprising two radiating arms arranged opposite to each other, each of the radiating arms being arranged in a circumferentially symmetrical manner; The radiation single arm includes: a first circuit and a second circuit, wherein a first capacitor sheet is respectively arranged at both ends of the first circuit, and a second capacitor sheet is respectively arranged at both ends of the second circuit, the first circuit is arranged on one side of a dielectric substrate, and the second circuit is arranged on the other side of the dielectric substrate, and the first capacitor sheet is coupled and connected with the second capacitor sheet.
2. The radiation unit according to claim 1, characterized in that: The first circuit includes: two first conductor circuits which are symmetrically arranged, one ends of the two first conductor circuits are connected, and the other ends of the two first conductor circuits are connected to the first capacitor plate.
3. The radiation unit according to claim 2, characterized in that: The first conductor line includes: a first conductor segment, a second conductor segment, a third conductor segment, a first resonant line and a second resonant line, the first resonant line is respectively connected to the first conductor segment and the second conductor segment, the second resonant line is respectively connected to the second conductor segment and the third conductor segment, and the third conductor segment is connected to the first capacitor.
4. The radiation unit according to claim 3, characterized in that: The first conductor segment, the second conductor segment and the third conductor segment are configured as hollow structures, and the first resonant line and the second resonant line are configured as reciprocating bending structures.
5. The radiation unit according to claim 1, characterized in that: The second circuit includes: two second conductor circuits which are symmetrically arranged, one ends of the two second conductor circuits are connected, and the other ends of the two second conductor circuits are connected to the second capacitor plate.
6. The radiation unit according to claim 5, characterized in that: The second conductor line includes: a fourth conductor segment, a fifth conductor segment, a sixth conductor segment, a third resonant line and a fourth resonant line, the third resonant line is respectively connected to the fourth conductor segment and the fifth conductor segment, the fourth resonant line is respectively connected to the fifth conductor segment and the sixth conductor segment, and the sixth conductor segment is connected to the second capacitor.
7. The radiation unit according to claim 5, characterized in that: Also includes: A third circuit is provided on one side of the dielectric substrate, and one end of two second conductor circuits are coupled and connected via the third circuit.
8. The radiation unit according to claim 6, characterized in that: The fourth conductor segment, the fifth conductor segment and the sixth conductor segment are configured as hollow structures, and the third resonant line and the fourth resonant line are configured as reciprocating bending structures.
9. An antenna, characterized in that: include: Two orthogonally placed baluns, a feeding board and a radiation unit as claimed in any one of claims 1 to 8, wherein the two baluns are respectively connected to the feeding board and the radiation unit.
10. A base station, characterized in that: Comprising the antenna as claimed in claim 9.