CN116979245A - Radiating element, antenna and base station - Google Patents
Radiating element, antenna and base station Download PDFInfo
- Publication number
- CN116979245A CN116979245A CN202310980639.XA CN202310980639A CN116979245A CN 116979245 A CN116979245 A CN 116979245A CN 202310980639 A CN202310980639 A CN 202310980639A CN 116979245 A CN116979245 A CN 116979245A
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- radiating
- polarization
- radiating element
- string
- radiation
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- 230000005855 radiation Effects 0.000 claims abstract description 75
- 230000010287 polarization Effects 0.000 claims abstract description 38
- 241001272720 Medialuna californiensis Species 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims 1
- 238000005388 cross polarization Methods 0.000 abstract description 9
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 238000002955 isolation Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 5
- 238000010295 mobile communication Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/001—Crossed polarisation dual antennas
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention provides a radiation unit, an antenna and a base station, wherein the radiation unit comprises two pairs of radiation arms with orthogonal polarization, an inner string and an outer string are sequentially arranged in the polarization direction from a polarization center of the radiation arms, the inner string is connected with the outer string to form a closed structure, an arrow end line is arranged in the middle of the outer string, and the arrow end line extends from the middle of the outer string to a direction away from the polarization center. The radiating unit expands the bandwidth of the radiating unit by controlling the length of the arrow end line on the radiating arm, expands the application scene of the radiating unit, and can effectively improve the cross polarization of the radiating unit and improve the performance of the radiating unit by arranging the inner chord line and the outer chord line which are connected on the radiating arm.
Description
Technical Field
The invention belongs to the technical field of mobile communication, and particularly relates to a radiation unit, an antenna provided with the radiation unit and a base station provided with the antenna.
Background
The base station antenna is an important component of the mobile communication system, and the performance of the base station antenna has a decisive role for the mobile communication system. With the rapid popularization of mobile communication technology, mobile communication users have rapidly increased in recent years, and the width of the working bandwidth of the existing base station antenna has gradually failed to meet the requirements.
The radiation unit is used as an important component of the base station antenna, and the working bandwidth of the radiation unit is closely related to the working bandwidth of the base station antenna. The existing radiating unit is used for expanding the bandwidth, various auxiliary structures are often added for the radiating unit, so that the structure of the radiating unit is complicated, the production cost of the radiating unit is greatly improved, and the large-scale popularization is not facilitated. In addition, the existing radiation unit is generally a dual-polarized radiation unit, and strong orthogonal polarization coupling exists between two polarizations of the dual-polarized radiation unit, so that when one polarized radiation arm works, the cross polarization performance is poor, and the radiation performance of the radiation unit is affected.
Disclosure of Invention
The present invention is directed to a radiating element, an antenna and a base station, which solve at least one of the above problems.
The invention is suitable for various purposes, and adopts the following technical scheme:
the invention provides a radiation unit which comprises two pairs of radiation arms with orthogonal polarization, wherein an inner string and an outer string are sequentially arranged in the polarization direction from a polarization center of the radiation arms, the inner string is connected with the outer string to form a closed structure, an arrow end line is arranged in the middle of the outer string, and the arrow end line extends from the middle of the outer string to a direction away from the polarization center.
Further, the inner and outer strings arch out in the direction of the polarization center to form a half-moon structure.
Further, the closed structure is a closed groove, and the closed groove is half-moon-shaped.
Specifically, the arrow end line extends along a polarization axis of the polarization.
Further, the length of the arrow-end line is associated with the bandwidth of the radiating element.
Furthermore, the two ends of the inner string are respectively intersected with the two ends of the outer string, and a cantilever is vertically arranged at the intersection of the inner string and the outer string.
Specifically, the middle part of the inner string is provided with an auxiliary line, and the auxiliary line extends from the middle part of the inner string to a direction away from the polarization center.
Further, the arrow end line and the auxiliary line in the same radiation arm are coaxially arranged.
An antenna is provided adapted to one of the objects of the invention, said antenna comprising a radiating element as described in any of the previous objects.
A base station is provided adapted for one of the objects of the invention, said base station comprising an antenna as described in the previous object.
The present invention has many advantages over the prior art, including but not limited to:
on one hand, the radiating unit expands the bandwidth of the radiating unit by controlling the length of the arrow end line on the radiating arm, expands the application scene of the radiating unit, and can effectively improve the cross polarization of the radiating unit and improve the performance of the radiating unit by arranging the inner chord line and the outer chord line which are connected on the radiating arm.
On the other hand, compared with the traditional radiating element, the radiating element has the advantages that the radiating element has a simple structure, the performance of the radiating element can be effectively improved without increasing a complex structure, the radiating element is convenient to produce and manufacture, the production cost is reduced, and compared with the traditional radiating element, the radiating element has the advantages that the performance of the radiating element is remarkably improved, and the radiating element is convenient to popularize and use on a large scale.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural view of a radiation unit according to an exemplary embodiment of the present invention.
Fig. 2 is a schematic top view of a radiation unit according to an exemplary embodiment of the present invention.
Fig. 3 is a schematic diagram of vector currents of a radiating element when a second pair of radiating arms of the radiating element of the present invention is excited.
Fig. 4 is a graph showing the measured isolation when the test antenna uses the radiating element of the present invention.
Fig. 5 is a graph showing the actual measurement of the horizontal pattern when the test antenna uses the radiating element of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The invention provides a radiation unit, wherein an inner chord line and an outer chord line of a radiation arm of the radiation unit are connected to form a closed structure, so that the radiation arm counteracts energy coupled from two radiation arms of the other polarization, and the radiation performance is improved; and the bandwidth of the radiating unit is expanded by arranging the arrow end wire, so that the arrow end wire has a simple structure and is convenient to produce and manufacture.
In an exemplary embodiment of the present invention, in conjunction with fig. 1 and 2, the radiating element 100 includes two pairs of radiating arms 110, the two pairs of radiating arms 110 being disposed in a polarization-orthogonal manner.
The radiation arm 110 includes an inner string 111, an outer string 112, an arrow end line 113, and a cantilever 115, the inner string 111 and the outer string 112 are sequentially arranged from the polarization center of the radiation unit 100 along the polarization direction of the radiation arm 110, and the inner string 111 is closer to the polarization center than the outer string 112. Preferably, the inner chord 111 and the outer chord 112 are arranged in sequence along the polarization axis of the radiation arm 110.
Both ends of the inner string 111 and both ends of the outer string 112 are intersected respectively, so that the inner string 111 and the outer string 112 are connected to form a closed structure, which in this embodiment is a closed groove 151.
The arrow-end line 113 is disposed in the middle of the outer string 112, the arrow-end line 113 extends in a direction away from the polarization center, the length of the arrow-end line 113 is related to the bandwidth of the radiating element 100, and the bandwidth of the radiating element 100 is adjusted by adjusting the length of the arrow-end line 113. The arrow end line 113 has a simple structure, is simple to manufacture, does not increase the manufacturing difficulty of the radiating arm 110, and can effectively improve the bandwidth of the radiating unit 100 compared with a conventional radiating unit at the same cost, thereby being convenient for large-scale popularization and use.
In this embodiment, the extension axis of the arrow-end line 113 coincides with the polarization axis of the radiation arm 110 where the arrow-end line 113 is located. The arrow end line 113 and the radiation arm 110 are formed by sheet metal integrally. Preferably, the arrow end line 113 has a rectangular shape or an arrow shape.
In one embodiment, the radiation arm 110 is further provided with an auxiliary line 116, the auxiliary line 116 is disposed in the middle of the inner string 111, the auxiliary line 116 is disposed to extend in a direction away from the polarization center, and the auxiliary line 116 is used to further expand the bandwidth of the radiation unit 100. Preferably, the extension axis of the auxiliary line 116 coincides with the extension axis of the arrow end line 113.
The inner string 111 includes a first end and a second end, the outer string 112 includes a first end and a second end, the first end of the inner string 111 intersects the first end of the outer string 112 at a first intersection region 117, and the second end of the inner string 111 intersects the second end of the outer string 112 at a second intersection region 118.
The cantilever 115 is vertically disposed on each of the first intersection area 117 and the second intersection area 118, and the cantilever 115 is used for further expanding the bandwidth of the radiation unit 100, so that the radiation unit 100 has a wider bandwidth, and the application range of the radiation unit 100 is improved. Preferably, the cantilever 115 is columnar, the cantilever 115 is perpendicular to the radiation surface of the radiation arm 110, and the cantilever 115 extends away from the balun of the radiation arm 110. In another embodiment, the cantilever 115 is disposed vertically at both ends of the outer chord line 112.
In the exemplary embodiment of the present invention, the inner string 111 has a half-moon structure, the outer string 112 has a half-moon structure, and the inner string 111 and the two ends of the outer string 112, which are both in the half-moon structure, intersect to form a closed groove 151 in the half-moon structure. The outer chord line 112 and the inner chord line 111 are respectively in a half-moon structure, so that cross polarization signals can be reduced. Preferably, the inner chord line 111 arches toward the polarization center, and the outer chord line 112 also arches toward the polarization center, as does the correspondingly formed closed groove 151.
The two pairs of radiation arms 110 of the radiation unit 100 are respectively disposed along a first polarization and a second polarization, wherein the first pair of radiation arms 110 is disposed at the first polarization, and the second pair of radiation arms 110 is disposed at the second polarization. The first pair of radiating arms 110 includes a first radiating arm 121 and a second radiating arm 122, and the second pair of radiating arms 110 includes a third radiating arm 123 and a fourth radiating arm 124.
The principle of the radiation unit 100 for improving cross polarization will be described below by taking the first radiation arm 121 as an example, with the first pair of radiation arms 110 operating at-45 ° and the second pair of radiation arms 110 operating at +45°. When the second pair of radiating arms 110 is excited, the radiating signal of the second pair of radiating arms 110 to radiate is +45°, the two radiating arms 110 of the first pair of radiating arms 110 respectively couple currents from the second pair of radiating arms 110, for example, the current coupled from the second pair of radiating arms 110 by the first radiating arm 121 forms a loop on the first radiating arm 121, as shown in fig. 3, fig. 3 is a schematic diagram of vector currents of the radiating element when the second pair of radiating arms 110 of the radiating element 100 is excited, and the current I1, the current I2, the current I3 and the current I4 are coupled on the first radiating arm 121.
Because the first radiating arm 121 has the inner chord line 111 and the outer chord line 112 which are connected with each other, and the inner chord line 111 and the outer chord line 112 are both in a half-moon shape, the directions of the current I1 and the current I2 on the first radiating arm 121 are opposite, so that the current I1 and the current I2 cancel each other; the directions of the current I3 and the current I4 are also opposite, so that the current I3 and the current I4 cancel each other, so as to reduce the magnitude of the radiation signal on the first radiation arm 121 when the second pair of radiation arms 110 is excited, that is, reduce the signal of-45 ° polarization radiated by the first pair of radiation arms 110 to the outside due to the coupling of the current of the second pair of radiation arms 110 when the second pair of radiation arms 110 is excited, thereby reducing the cross polarization of the radiation unit 100, improving the radiation beam convergence of the second pair of radiation arms 110, and improving the isolation between the first pair of radiation arms 110 and the second pair of radiation arms 110, and improving the radiation performance of the radiation arms 110. The current flow direction of the second radiating arm 122 is the same as the current flow direction of the first radiating arm 121, and is not described in detail herein for the sake of brevity.
When the first pair of radiating arms 110 is excited, the current flows in the third radiating arm 123 and the fourth radiating arm 124 of the second pair of radiating arms 110 are the same as the current flows in the first radiating arm 121 described above, and therefore, the description is omitted for brevity.
In an exemplary embodiment of the present invention, the radiation unit 100 further includes a balun base 131, and the balun base 131 is used to support the two pairs of radiation arms 110. The upper ends of the balun bases 131 are connected to opposite sides of the two pairs of radiating arms 110 such that the balun bases 131 support the two pairs of radiating arms 110. The lower end of the balun base 131 is disposed on the bottom plate 133. Preferably, the balun base 131 is made of an insulating material. The radiating element 100 is a sheet metal or a die-cast vibrator.
The radiating element 100 also includes a pair of feed cores 134 and a pair of coaxial cables (not shown). The pair of feed cores 134 respectively feed the first pair of radiating arms 110 and the second pair of radiating arms 110, and the feed cores 134 respectively couple and feed the two radiating arms 110 of the same polarization. The feed core 134 is provided with a first coupling portion 1341 corresponding to the radiation arm 110, the radiation arm 110 is provided with a second coupling portion 119 corresponding to the first coupling portion 1341, and the first coupling portion 1341 and the second coupling portion 119 are coupled to each other, so that the feed core 134 feeds the radiation arm 110. Preferably, the first coupling portion 1341 has a sheet structure, and the second coupling portion 119 has a groove structure.
The pair of coaxial cables feed the pair of feed cores 134, respectively. Specifically, the inner conductor of the coaxial cable is electrically connected to the corresponding feed core 134, the outer conductor of the coaxial cable is connected to the balun base 131, for example, the inner conductor of the coaxial cable is soldered to the corresponding feed core 134, and the outer conductor of the coaxial cable is soldered to the outer conductor of the balun base 131. The balun base 131 is provided with balun holes corresponding to the coaxial cables so that the coaxial cables can be connected with the corresponding feed cores 134 through the balun holes.
In one embodiment, the first pair of radiating arms 110 forms a first dipole, the second pair of radiating arms 110 forms a second dipole, and the radiating element 100 forms a dipole radiating element 100.
Simulated testing when the test antenna used a radiating element in an exemplary embodiment of the present invention, obtained the following data:
fig. 4 is a graph showing the measured isolation when the test antenna uses the radiating element of the present invention. As can be seen from FIG. 4, the radiating element has better isolation, the isolation is below-30 dB, and the circuit performance is good.
Fig. 5 is a graph showing a measured horizontal pattern of a radiating element of the present invention when the test antenna is used. As can be seen from fig. 5, the radiation unit beam converges, the 60 ° cross polarization index is better, and the radiation performance is good.
From the data obtained by the above simulation test, it is known that the radiation unit of the present invention can effectively improve the isolation of the radiation unit, improve the cross polarization, and other radiation performance.
The invention also provides an antenna comprising the radiating element 100 described above.
The invention also provides a base station, which comprises the antenna.
In summary, the radiating element of the invention further expands the bandwidth of the radiating element by arranging the arrow end line on the radiating arm and the arrow end line, so that the radiating element has better bandwidth, the application scene of the radiating element is enlarged, and the cross polarization of the radiating arm is optimized by arranging the inner chord line and the outer chord line on the radiating arm, so that the radiation performance of the radiating element is improved.
The above description is only illustrative of the preferred embodiments of the present invention and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the invention referred to in the present invention is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept described above. Such as the above-mentioned features and the features having similar functions (but not limited to) of the invention.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are example forms of implementing the claims.
Claims (10)
1. The utility model provides a radiating element, includes two pairs of radiation arms that polarization quadrature set up, its characterized in that, the radiation arm is equipped with interior string and outer string in proper order along polarization direction from the polarization center, and interior string is connected with outer string and is formed enclosed construction, the middle part of outer string is equipped with the arrow end line, the arrow end line is followed the middle part of outer string is to keeping away from the direction extension setting of polarization center.
2. The radiating element of claim 1, wherein the inner and outer chords arch in a direction toward the polarization center to form a half-moon structure.
3. The radiating element of claim 1, wherein the enclosed structure is an enclosed trough, the enclosed trough being half-moon shaped.
4. The radiating element of claim 1, wherein the arrow end line extends along a polarization axis of the polarization.
5. The radiating element of claim 1, wherein a length of the arrow-end line is associated with a bandwidth of the radiating element.
6. The radiating element of claim 1, wherein the ends of the inner chord line intersect the ends of the outer chord line, respectively, and a cantilever is vertically provided at the intersection of the inner chord line and the outer chord line.
7. A radiation element according to claim 1, characterized in that the middle of the inner string is provided with an auxiliary line extending from the middle of the inner string in a direction away from the polarization center.
8. A radiating element as claimed in claim 7, characterized in that the arrow end line in the same radiating arm is arranged coaxially with the auxiliary line.
9. An antenna, characterized in that it comprises a radiating element according to any one of claims 1 to 8.
10. A base station comprising the antenna of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310980639.XA CN116979245B (en) | 2023-08-04 | 2023-08-04 | Radiating element, antenna and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310980639.XA CN116979245B (en) | 2023-08-04 | 2023-08-04 | Radiating element, antenna and base station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116979245A true CN116979245A (en) | 2023-10-31 |
| CN116979245B CN116979245B (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310980639.XA Active CN116979245B (en) | 2023-08-04 | 2023-08-04 | Radiating element, antenna and base station |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572347A (en) * | 2009-05-27 | 2009-11-04 | 广东盛路通信科技股份有限公司 | Integral type antenna element |
| CN102074781A (en) * | 2011-01-07 | 2011-05-25 | 江苏捷士通科技股份有限公司 | TD-LTE dual-polarization radiation unit |
| CN205944414U (en) * | 2016-08-23 | 2017-02-08 | 安谱络(苏州)通讯技术有限公司 | Ultra wide band radiating element |
| CN109509970A (en) * | 2018-12-19 | 2019-03-22 | 广州司南天线设计研究所有限公司 | Dual polarized antenna |
| CN208723084U (en) * | 2018-10-17 | 2019-04-09 | 深圳国人通信股份有限公司 | Broadband dual-polarization antenna radiation unit |
-
2023
- 2023-08-04 CN CN202310980639.XA patent/CN116979245B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572347A (en) * | 2009-05-27 | 2009-11-04 | 广东盛路通信科技股份有限公司 | Integral type antenna element |
| CN102074781A (en) * | 2011-01-07 | 2011-05-25 | 江苏捷士通科技股份有限公司 | TD-LTE dual-polarization radiation unit |
| CN205944414U (en) * | 2016-08-23 | 2017-02-08 | 安谱络(苏州)通讯技术有限公司 | Ultra wide band radiating element |
| CN208723084U (en) * | 2018-10-17 | 2019-04-09 | 深圳国人通信股份有限公司 | Broadband dual-polarization antenna radiation unit |
| CN109509970A (en) * | 2018-12-19 | 2019-03-22 | 广州司南天线设计研究所有限公司 | Dual polarized antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116979245B (en) | 2024-04-16 |
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