CN217134687U - Dual-polarization radiating element, antenna and antenna system - Google Patents
Dual-polarization radiating element, antenna and antenna system Download PDFInfo
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- CN217134687U CN217134687U CN202221177730.5U CN202221177730U CN217134687U CN 217134687 U CN217134687 U CN 217134687U CN 202221177730 U CN202221177730 U CN 202221177730U CN 217134687 U CN217134687 U CN 217134687U
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- 230000009977 dual effect Effects 0.000 claims abstract description 34
- 239000011159 matrix material Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 41
- 230000010287 polarization Effects 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000001808 coupling effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003031 feeding effect Effects 0.000 description 1
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- 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
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/20—Two collinear substantially straight active elements; Substantially straight single active elements
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Abstract
The utility model relates to a dual polarization radiating element, an antenna and an antenna system. Wherein the dual polarized radiation unit includes: two dipoles, wherein the radiating arms of the two dipoles are of a closed loop line structure and are symmetrical about two mutually perpendicular axes, wherein the two mutually perpendicular axes divide the radiating element equally into four regions. Furthermore, the present invention also relates to an antenna comprising such a dual polarized radiating element and an antenna system comprising such an antenna.
Description
Technical Field
The present invention relates to the field of antenna-related technology, and more particularly to a dual polarized radiating element, an antenna comprising the dual polarized radiating element, and an antenna system comprising the antenna.
Background
As is known, a base station antenna typically comprises more than one communication band. For example, the base station antenna of the present operator needs to cover at least such 2G, 3G, 4G and 5G networks, thereby supporting a better user experience.
On one hand, because of the limited space of the base station antenna, the communication frequency band of the antenna should meet the requirement of broadband communication, and the frequency band of the low-frequency antenna unit is generally a communication frequency band from 698MHz to 960MHz or a communication frequency band from 617MHz to 896MHz, but rarely includes the whole frequency band from 617MHz to 960 MHz. Under the application requirements of certain broadband, the number of the antennas used by the existing antennas is greatly increased, and the difficulty of antenna layout is increased.
On the other hand, due to the limited layout space of the base station antenna, antenna array units of different frequency bands are partially overlapped under some special conditions, so that the radiation pattern of the base station antenna is influenced, and the radiation performance of the antenna is seriously influenced.
Disclosure of Invention
In view of the deep understanding of the problems existing in the background art, that is, the communication frequency band of the existing antenna is not wide enough, and the different antennas can interfere with each other, the inventors of the present invention thought to design a dual-polarized radiating element with a wide frequency band. According to the utility model discloses a dual polarization radiating element's radiating arm adopts closed loop line structure to the antenna linewidth is narrower, can reduce the influence between the high low frequency unit. In addition, due to the coupling effect between the loop lines and the preferable chamfering process of the antenna elements, these factors work together to increase the width of the radiation band and reduce mutual interference between different antennas, for example, between high and low frequency antennas.
Particularly, the utility model discloses a first aspect provides a dual polarization radiating element, dual polarization radiating element includes:
two dipoles, wherein the four radiating arms of the two dipoles are of a closed loop line structure and are symmetrical about two mutually perpendicular axes, wherein the two mutually perpendicular axes divide the radiating element equally into four regions.
Here, according to the utility model discloses a dual polarization radiating element adopts closed loop line structure to form four radiation arms that are correlated with two dipoles to can reduce the mutual interference between the high low frequency antenna of difference with the help of the high impedance characteristic of closed loop line structure.
Preferably, in an embodiment according to the present invention, the closed loop line structure is subjected to an arc chamfering process at least one corner. More preferably, the closed loop line structure is arc-chamfered at three corners except for the corner at the center. In this way, can improve effectively and use the basis the utility model discloses a dual polarization radiating element's antenna is at the radiation efficiency of part frequency channel within range and can extend the bandwidth. Meanwhile, the processing and manufacturing of the PCB can be facilitated.
Preferably, in an embodiment according to the present invention, the dual-polarized radiation unit further includes: a dielectric matrix configured to provide support for the two dipoles. Further preferably, in an embodiment according to the present invention, the dielectric substrate is hollowed out at a portion not in contact with the closed loop line structure. In this way, the material of the dual-polarized radiating element can be reduced, and the manufacturing cost of the dual-polarized radiating element is reduced. Meanwhile, the weight of the dual-polarized radiation unit can be reduced.
In an embodiment according to the present invention, the width of the closed loop line structure of the dual polarized radiating element is between 0.4 mm and 1.2 mm. In this way, because the width of the radiation arm is small, the coupling current of the high-frequency signal in the radiation unit can be effectively reduced, and the interference of the radiation unit on the high-frequency radiation unit can be effectively reduced.
In an embodiment according to the present invention, the dual-polarized radiation unit further includes: a feed network comprising two relatively perpendicular feed plates, wherein each feed plate is configured to feed a corresponding dipole. In this way, the manufacturing process and the assembly process of the dual polarized radiating element according to the present disclosure can be facilitated.
In an embodiment according to the present invention, the feeding board is configured with a metalized via hole, the feeding board is configured with a ground layer on both sides, and the ground layers on both sides are connected through the metalized via hole. In this way, the isolation between the two feeding board input ports of the dual-polarized radiating unit and the balance of the current distribution of each feeding board can be improved.
In an embodiment according to the present invention, the feeding board is further configured with a signal layer, the signal layer is configured in the middle of the Ground layer on one side to feed the two dipoles, that is, the feeding network feeds the two dipoles by using a Ground Coplanar Waveguide (CPWG) feeding manner. In this way, the feed effect of the dual-polarized radiating element according to the present invention can be improved.
Furthermore, a second aspect of the present invention provides an antenna, including: at least one dual polarized radiating element as proposed according to the first aspect of the present invention; and a radiating element matching circuit.
Furthermore, a third aspect of the present invention provides an antenna system, including: according to the present invention, there is provided an antenna; and at least one second antenna, wherein the operating frequency of the at least one second antenna is higher than the operating frequency of the antenna.
In summary, according to the utility model discloses a dual polarization radiating element adopts closed loop line structure to form the radiating arm of two dipoles to can reduce the mutual interference between the high low frequency antenna of difference with the help of the high impedance characteristic of closed loop line structure.
Drawings
Embodiments are shown and described with reference to the drawings. These drawings are provided to illustrate the basic principles and thus only show the aspects necessary for understanding the basic principles. The figures are not to scale. In the drawings, like reference numerals designate similar features.
Fig. 1 shows a schematic structural diagram of a dual polarized radiating element 100 according to an embodiment of the present invention;
fig. 2A shows a front view of a feed panel 140 of a feed network according to an embodiment of the invention;
fig. 2B shows a reverse side view of a feed panel 140 of a feed network in accordance with one embodiment of the present invention;
fig. 3A illustrates a perspective view of a perspective of an antenna 300 in accordance with an embodiment of the present invention;
fig. 3B illustrates a perspective view of another perspective of the antenna 300 of the embodiment of fig. 3A in accordance with the present invention; and
fig. 3C shows a side view of the antenna 300 in accordance with the fig. 3A embodiment of the present invention.
Other features, characteristics, advantages and benefits of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
Detailed Description
In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings which form a part hereof. The accompanying drawings illustrate, by way of example, specific embodiments in which the invention may be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments according to the invention. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.
The present invention relates to a dual-polarized antenna, and more particularly, to a dual-polarized antenna having a wide frequency band, which is provided with a plurality of antenna elements, and a dual-polarized antenna element. The foundation the utility model discloses a dual polarization radiating element's radiation arm adopts closed loop line structure to can improve the width of radiation frequency channel, can reduce the mutual interference between the different antennas moreover.
In view of the above technical problem, the present invention provides the basis for the present invention, the low frequency antenna bandwidth formed by the dual-polarized radiating elements covers the frequency band of 617MHz to 960MHz, the bandwidth is wide and the size is small, and at the same time, the number of antenna elements used under specific conditions can be effectively reduced, thereby reducing the difficulty of antenna layout. Furthermore, including the basis the utility model discloses a dual polarization radiating element's low frequency antenna can reduce its influence to high frequency antenna element radiation performance effectively.
The dual-polarized radiation unit proposed by the present invention will be explained in detail with reference to the accompanying drawings, that is, a schematic structural diagram of the dual-polarized radiation unit 100 according to an embodiment of the present invention is described below with reference to fig. 1. As can be seen from fig. 1, the dual-polarized radiating element 100 proposed according to the first aspect of the present invention includes two dipoles having four radiating arms 125, 126, 127 and 128, which are identical in structure, i.e. are axisymmetric about two mutually perpendicular bobbins 111 and 112, specifically, are axisymmetric about the bobbin 111 two by two, and are axisymmetric about the bobbin 112 two by two. Here, the lower left radiating arm and the upper right radiating arm form one dipole, and the upper left radiating arm and the lower right radiating arm form the other dipole. In addition, as can also be seen from fig. 1, the four radiating arms of the two dipoles are in a closed loop line structure, wherein the two mutually perpendicular axes divide the radiating element 100 into four areas. Here, optionally, the closed loop line structure forms a hollow area 123 at each of the four areas to reduce the weight of the dual polarized radiation unit 100 according to an embodiment of the present invention. Since the four radiating arms are all identical in structure, only the radiating arm at the upper right corner is illustrated as an example. Here, according to the present invention, the dual-polarized radiation unit 100 adopts a closed loop line structure to form four radiation arms of two dipoles, so that mutual interference between different antennas can be reduced by means of the high impedance characteristic of the closed loop line structure.
Furthermore, as can be seen from fig. 1, in an embodiment according to the present invention, the closed loop line structure has the following advantages: that is, when, for example, a positive 45 ° polarized dipole (for example, a pair of radiation arms at the upper right and lower left) of the dual-polarized radiation element is excited or fed, a loop current (which is a schematic diagram of current directions at a certain moment) as shown in fig. 1 is generated in a loop line structure (for example, a pair of radiation arms at the lower right and upper left) of another polarization due to the coupling effect of the current. At this time, currents are generated on the parallel lines in opposite directions, that is, the currents on the parallel lines adjacent to the lower left and upper left radiation arms are in opposite directions. Similarly, the directions of currents on the parallel lines adjacent to the upper left and upper right radiating arms are opposite, the directions of currents on the parallel lines adjacent to the upper right and lower right radiating arms are opposite, and the directions of currents on the parallel lines adjacent to the lower right and lower left radiating arms are also opposite. Further, as shown in fig. 1, the two arrows on the upper side indicate that the current direction flows from left to right, and the two arrows on the lower side indicate that the current direction flows from left to right, and at this time, the current on the upper side and the current on the lower side are in the same direction; similarly, the two arrows on the left side indicate that the current flows from bottom to top, and the two arrows on the right side indicate that the current flows from bottom to top, and at this time, the current on the left side and the current on the right side are in the same direction, and the currents in the same direction are superimposed on each other at the far field strength, and an electromagnetic wave polarized at positive 45 ° is generated. Similarly, the generation principle of the negative 45 ° polarized wave is similar. On the other hand, the line width of the closed loop line is narrow, the characteristic impedance is large, and when the high-frequency antenna unit radiates, the coupling current on the closed loop line is small, so that the influence of the dual-polarized radiation unit of the low-frequency antenna unit on the radiation characteristic of the high-frequency unit is greatly reduced, and the flexibility of the layout of the antenna units with different working frequencies in a narrow space is improved.
Furthermore, as can be seen from fig. 1, the closed loop line structure is arc-chamfered at the corner 124, and more preferably, the closed loop line structure is arc-chamfered at three corners except the corner at the center. The processing can effectively improve the radiation efficiency of the antenna in partial frequency band range and can expand the bandwidth, and meanwhile, the processing and the manufacturing of the PCB are facilitated.
The dual-polarized radiation unit of the low-frequency oscillator unit is in a closed loop line form. Preferably, in an embodiment according to the present invention, the dual-polarized radiating element 100 further includes: a dielectric matrix 130, the dielectric matrix 130 configured to provide support for the two dipoles. Further preferably, in an embodiment according to the present invention, the dielectric substrate 130 is hollowed out at a portion not in contact with the closed loop line structure. In this way, the material consumption of the dual-polarized radiation unit 100 can be reduced, and the manufacturing cost of the dual-polarized radiation unit 100 can be reduced. Meanwhile, the weight of the dual-polarized radiation unit can be reduced. In summary, in the embodiment shown in fig. 1 according to the present invention, the closed loop line structure is arc chamfered at least one corner 124. In this way, the radiation efficiency of the antenna using the dual-polarized radiation element 100 according to the present invention in a partial frequency band range can be effectively improved. Meanwhile, the processing and manufacturing of the PCB can be facilitated.
In an embodiment according to the present invention, the width of the closed loop of the dual-polarized radiating element 100 is between 0.4 mm and 1.2 mm. In this way, since the widths of the radiation arms 125, 126, 127 and 128 are all small, the coupling current of the high-frequency signal in the radiation unit 100 can be effectively reduced, and the interference of the radiation unit 100 to the high-frequency radiation unit can be effectively reduced. Here, it should be understood by those skilled in the art that closed loop lines of other widths are within the scope of the present invention as long as the characteristics of high characteristic impedance and wide frequency band according to the present invention can be realized.
Furthermore, in an embodiment according to the present invention, the dual-polarized radiating element 100 further includes: a feeding network 140, said feeding network 140 comprising two relatively perpendicular feeding boards 141 and another feeding board not shown, wherein each feeding board 141 is configured for feeding a corresponding one of the dipoles (e.g. one dipole formed by the upper left and lower right radiating arms, or one dipole formed by the lower left and upper right radiating arms). In this way, the manufacturing process as well as the assembly process of the dual polarized radiating element 100 according to the present disclosure can be facilitated.
A front view of the feeding board 141 of the feeding network according to an embodiment of the present invention will be described below with reference to fig. 2A, and a back view of the feeding board 141 of the feeding network according to an embodiment of the present invention will be described below with reference to fig. 2B. As can be seen from fig. 2A and 2B, a signal line 1412 is disposed on the front surface of the feeding board 141, so that the dual-polarized radiation unit 100 matched with the signal line 1412 can be fed by means of CPWG. Specifically, ground layers 1413, which are shown in gray as front faces in fig. 2A, on both sides of the signal line 1412, the ground layers 1413 in fig. 2A and the ground layers 1414, which are also shown in gray in fig. 2B, are connected by metallized vias 1411, and the two ground layers are distributed on both sides of the dielectric board and are connected by the metallized vias 1411. In other words, the feeding network of the dual-polarized radiating element 100 adopts a Ground Coplanar Waveguide (CPWG) mode, that is, the feeding network 140 adopts a CPWG feeding mode to feed the two dipoles. In this way, the feeding effect of the dual-polarized radiation element 100 according to the present invention can be improved.
In addition, as shown in fig. 2A and 2B, two output ports generate currents of ± 180 ° and are respectively coupled and connected with two radiating arms formed of a closed loop structure of the same polarization, and two feeding boards are placed perpendicular to each other, for example, are plugged together. A metalized through hole 1411 is added on each feed board to improve the isolation between the input ports of the two feed boards and improve the current distribution balance of each feed board. In summary, the feeding board 141 and another feeding board, not shown, are configured with a metalized via 1411. In this way, the isolation between the two feeding board input ports of the dual-polarized radiating element 100 according to the present invention can be improved and the balance of the current distribution of each feeding board can be improved.
Fig. 3A shows a perspective view of one perspective of an antenna 300 according to an embodiment of the present invention, fig. 3B shows a perspective view of another perspective of the antenna 300 according to the embodiment of fig. 3A of the present invention, and fig. 3C shows a side view of the antenna 300 according to the embodiment of fig. 3A of the present invention. As shown in fig. 3A, 3B and 3C, according to a second aspect of the present invention, there is provided an antenna including: at least one dual polarized radiating element 100 as proposed according to the first aspect of the present invention, a feeding network 140 and a radiating element matching circuit 150. By means of this radiating element matching circuit 150, a radiation signal can be provided for the dual polarized radiating element 100 proposed according to the first aspect of the present invention, thereby making the antenna comprising the dual polarized radiating element 100 proposed according to the first aspect of the present invention work normally.
Furthermore, a third aspect of the present invention provides an antenna system, including: according to the present invention, there is provided an antenna; and at least one second antenna, wherein the operating frequency of the at least one second antenna is higher than the operating frequency of the antenna.
In summary, according to the utility model discloses a dual polarization radiating element adopts closed loop line structure to form the radiating arm of two dipoles to can reduce the mutual interference between the high low frequency antenna of difference with the help of the high impedance characteristic of closed loop line structure.
While various exemplary embodiments of the invention have been described, it will be apparent to those skilled in the art that various changes and modifications can be made which will achieve one or more of the advantages of the invention without departing from the spirit and scope of the invention. Other components performing the same function may be substituted as appropriate by those skilled in the art. It should be understood that features explained herein with reference to a particular figure may be combined with features of other figures, even in those cases where this is not explicitly mentioned. Furthermore, the methods of the present invention can be implemented in either all software implementations using appropriate processor instructions or in hybrid implementations using a combination of hardware logic and software logic to achieve the same result. Such modifications to the solution according to the invention are intended to be covered by the appended claims.
Claims (11)
1. A dual polarized radiating element, comprising:
two dipoles, wherein the four radiating arms of the two dipoles are of a closed loop line structure and are symmetrical about two mutually perpendicular axes, wherein the two mutually perpendicular axes divide the radiating element equally into four regions.
2. The dual polarized radiating element of claim 1, wherein the closed loop line structure is arc chamfered at least one corner.
3. The dual polarized radiating element of claim 2, wherein the closed loop line structure is arc chamfered at all three corners except the corner at the center.
4. The dual polarized radiating element of claim 1, further comprising:
a dielectric matrix configured to provide support for the two dipoles.
5. The dual polarized radiating element of claim 4, wherein the dielectric substrate is hollowed out at portions not in contact with the closed loop line structure.
6. A dual polarized radiating element according to claim 2, wherein the width of the closed loop line structure of the dual polarized radiating element is between 0.4 mm and 1.2 mm.
7. The dual polarized radiating element of claim 1, further comprising:
a feed network comprising two relatively perpendicular feed plates, wherein each feed plate is configured to feed a corresponding dipole.
8. The dual polarized radiating element according to claim 7, wherein the feeding board is configured with a metalized via, two sides of the feeding board are respectively configured with a ground layer, and the ground layers on the two sides are connected through the metalized via.
9. The dual polarized radiating element according to claim 7, wherein a signal layer is further constructed on the feeding board, the signal layer being constructed in the middle of the ground layer on one side to feed the two dipoles.
10. An antenna, characterized in that the antenna comprises:
at least one dual polarized radiating element according to any one of claims 1 to 9; and
a radiating element matching circuit.
11. An antenna system, characterized in that the antenna system comprises:
the antenna of claim 10; and
at least one second antenna, wherein an operating frequency of the at least one second antenna is higher than an operating frequency of the antenna.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221177730.5U CN217134687U (en) | 2022-05-16 | 2022-05-16 | Dual-polarization radiating element, antenna and antenna system |
| PCT/CN2023/083984 WO2023221651A1 (en) | 2022-05-16 | 2023-03-27 | Dual-polarized radiation unit, antenna, and antenna system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221177730.5U CN217134687U (en) | 2022-05-16 | 2022-05-16 | Dual-polarization radiating element, antenna and antenna system |
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| Publication Number | Publication Date |
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| CN217134687U true CN217134687U (en) | 2022-08-05 |
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| CN202221177730.5U Active CN217134687U (en) | 2022-05-16 | 2022-05-16 | Dual-polarization radiating element, antenna and antenna system |
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| Country | Link |
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| CN (1) | CN217134687U (en) |
| WO (1) | WO2023221651A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221651A1 (en) * | 2022-05-16 | 2023-11-23 | 普罗斯通信技术（苏州）有限公司 | Dual-polarized radiation unit, antenna, and antenna system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760976B (en) * | 2012-05-23 | 2014-08-20 | 深圳市华一通信技术有限公司 | Radiating unit of dual-polarization antenna and dual-polarization antenna |
| CN106340711B (en) * | 2016-08-23 | 2022-08-12 | 江苏省东方世纪网络信息有限公司 | Dual-polarized antenna |
| CN106532249B (en) * | 2016-12-28 | 2023-11-17 | 华南理工大学 | Compact elliptical annular dual-polarized base station antenna |
| CN111864367A (en) * | 2020-07-27 | 2020-10-30 | 摩比天线技术（深圳）有限公司 | Low-frequency radiation unit and base station antenna |
| CN217134687U (en) * | 2022-05-16 | 2022-08-05 | 罗森伯格技术有限公司 | Dual-polarization radiating element, antenna and antenna system |
-
2022
- 2022-05-16 CN CN202221177730.5U patent/CN217134687U/en active Active
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2023
- 2023-03-27 WO PCT/CN2023/083984 patent/WO2023221651A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221651A1 (en) * | 2022-05-16 | 2023-11-23 | 普罗斯通信技术（苏州）有限公司 | Dual-polarized radiation unit, antenna, and antenna system |
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| WO2023221651A1 (en) | 2023-11-23 |
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Address after: 215300 No.6 Shen'an Road, Dianshanhu Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: ProLogis Communication Technology (Suzhou) Co.,Ltd. Address before: 215345 No. 6 Shen'an Road, Dianshan Lake Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: Rosenberg Technology Co.,Ltd. |