CN114464990B - Low-profile high-isolation dual-polarized antenna radiation unit - Google Patents
Low-profile high-isolation dual-polarized antenna radiation unit Download PDFInfo
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- CN114464990B CN114464990B CN202210386685.2A CN202210386685A CN114464990B CN 114464990 B CN114464990 B CN 114464990B CN 202210386685 A CN202210386685 A CN 202210386685A CN 114464990 B CN114464990 B CN 114464990B
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- 238000002955 isolation Methods 0.000 title claims abstract description 32
- 230000005855 radiation Effects 0.000 title abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 148
- 229910052751 metal Inorganic materials 0.000 claims abstract description 148
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 7
- 230000010287 polarization Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- 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
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/104—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
Abstract
The invention relates to a low-profile high-isolation dual-polarized antenna radiation unit which is characterized by comprising a reflecting plate, a feed mechanism and a main metal ring; the main metal ring is positioned on the reflecting surface of the reflecting plate, and the distance D2 between the top surface of the main metal ring and the reflecting surface of the reflecting plate is in the range of (0.125 x lambda) ± 10%, lambda is the working wavelength; the feed mechanism comprises 4 feed pieces with the same structure, the 4 feed pieces are all surrounded by the main metal ring, the 4 feed pieces are distributed in a cross shape around the center of the main metal ring, the inner end of each feed piece is close to the center of the main metal ring, the outer end of each feed piece is in feed connection with the main metal ring, the point on the main metal ring, which is in feed connection with the feed piece, is a feed point, the main metal ring is divided into four sections of path sections through the feed point, the length of each section of path section is the same, and each feed piece is installed on the reflecting plate through a balun. The invention has the characteristics of simple structure, scientific design, high isolation, small volume and the like.
Description
Technical Field
The invention relates to the technical field of communication equipment, in particular to a low-profile high-isolation dual-polarized antenna radiation unit.
Background
In the existing antenna, in order to realize a low profile of the antenna, a microstrip patch structure is generally used, and when the dual-polarized patch antenna is realized by the structure, because of the feed asymmetry, the isolation of two polarized ports of a single dual-polarized oscillator is about 20dB generally, and the isolation is low; in addition, although the isolation of the symmetric dual-polarized dipole can generally reach 35-40 dB, the height of the symmetric dual-polarized dipole is about one quarter of the working wavelength, so that the volume of the antenna is large. Based on the disadvantages of the conventional antenna, it is urgently needed to design a low-profile, high-isolation and small-sized antenna radiation unit.
Disclosure of Invention
The invention aims to provide a low-profile high-isolation dual-polarized antenna radiation unit which has the advantages of simple structure, scientific design, high isolation, small size and the like.
The technical scheme of the invention is realized as follows: a low-profile high-isolation dual-polarized antenna radiation unit is characterized by comprising a reflecting plate, a feed mechanism and a main metal ring; the main metal ring is a sheet-like structure, the inner diameter D1 of the main metal ring is in the range of (0.25 x lambda) ± 10%, the main metal ring is positioned on the reflecting surface of the reflecting plate, the distance D2 between the top surface of the main metal ring and the reflecting surface of the reflecting plate is in the range of (0.125 x lambda) ± 10%, and lambda is the working wavelength; the feed mechanism comprises 4 feed pieces with the same structure, the 4 feed pieces are all surrounded by the main metal ring, the 4 feed pieces are distributed in a cross shape around the center of the main metal ring, the inner end of each feed piece is close to the center of the main metal ring, the outer end of each feed piece is in feed connection with the main metal ring, the point on the main metal ring, which is in feed connection with the feed piece, is a feed point, the main metal ring is divided into four sections of path sections through the feed point, the length of each section of path section is the same, and each feed piece is installed on the reflecting plate through a balun.
The working wavelength lambda is determined by the working frequency f, lambda = v/f, v is the propagation speed of electromagnetic waves, which is equivalent to the speed of light, and the working frequency can be 350-370 MHz, 617-960 MHz, 1710-2700 MHz, 3300-3800 MHz, or 4900-6000 MHz.
According to the technical scheme, the cross-shaped feed mechanism is connected with the main metal ring to form the feedback circuit, and through the design, in the use process, due to the formation of a common-mode signal, a differential-mode signal is eliminated, so that a differential-mode signal of a second polarization port is eliminated when a first polarization port is excited, a radio-frequency signal excited by the first polarization port cannot be connected into a radio-frequency port of a second polarization in series, the isolation degree between the polarization ports of the radiation unit is better than 80dB, the signal-to-noise ratio of the radiation unit can be greatly improved, the data transmission rate of mobile communication is greatly improved, and the design has important significance for improving a mobile communication network; in addition, due to the design that the main metal ring is fed through the cross-shaped feeding mechanism, the distance between the top surface of the main metal ring and the reflecting surface of the reflecting plate can be controlled within the range of (0.125 x lambda) ± 10%, so that the volume of the technical scheme is smaller.
Further, the contour of the main metal ring may be a circular or regular polygonal structure; when the outline of the main metal ring is in a regular polygon structure, the number M of the edges of the outline of the main metal ring is more than 3, and M is a multiple of 2.
Further, each feeding sheet and the main metal ring can be connected through physical feeding connection or coupling feeding connection.
Furthermore, the invention also comprises an auxiliary metal ring, the shape of the auxiliary metal ring is the same as that of the main metal ring, and the auxiliary metal ring and the main metal ring are relatively fixed; the orthographic projection of the main metal ring and the orthographic projection of the auxiliary metal ring on the reflecting surface of the reflecting plate are arranged concentrically, the main metal ring is surrounded by the auxiliary metal ring, and the outer edge of the main metal ring is in feed connection with the inner edge of the auxiliary metal ring.
Further, the number of secondary metal rings is at least 2; the orthographic projection of the auxiliary metal rings on the reflecting surface of the reflecting plate is arranged in a surrounding mode layer by layer, and between 2 adjacent auxiliary metal rings: the outer edge of the inner secondary metal ring is in feed connection with the inner edge of the outer secondary metal ring; the outer diameter D3 of the outermost secondary metal ring is in the range of (0.5 x λ) ± 10%. By adopting the structural design of combining the main metal ring and the auxiliary metal ring, signals with various different frequencies can be radiated in the using process of the technical scheme, the isolation between polarization ports of the radiation units is better than 80dB when the signals with different frequencies are radiated, and the main metal ring and each auxiliary metal ring respectively correspond to the radiation requirement of the signals with one frequency.
Further, the top surface of the secondary metal ring is coplanar with the top surface of the primary metal ring. On the premise that the main metal ring and the auxiliary metal ring can be coupled for feeding, the distance between the top surface of the auxiliary metal ring and the reflecting surface of the reflecting plate can be smaller than the distance between the top surface of the main metal ring and the reflecting surface of the reflecting plate.
Further, orthographic projections of the main metal ring and the auxiliary metal ring on the reflecting surface of the reflecting plate are as follows: the gap width D4 between the main metal ring and the innermost secondary metal ring and the gap width D5 between the adjacent 2 secondary metal rings are both in the range of 0.1 mm-7 mm.
Further, the main metal ring and the auxiliary metal ring can be mounted on the reflecting plate through the insulating columns.
Further, the main metal ring and the auxiliary metal ring can be fixed on the plastic bracket through a PCB covering copper foil or a metal ring.
The invention has the beneficial effects that: the device has the advantages of simple structure, scientific design, high isolation, small size and the like.
Drawings
Fig. 1 is a schematic perspective view of embodiment 1.
Fig. 2 is a schematic front view of the structure of embodiment 1.
Fig. 3 is a schematic top view of the structure of embodiment 1.
Fig. 4 is a graph of the isolation test between the first polarization port and the second polarization port in the simulation of embodiment 1.
Fig. 5 is a graph of the isolation test between the second polarization port and the first polarization port in the simulation of embodiment 1.
Fig. 6 is a schematic structural view of embodiment 2.
Description of reference numerals: 1-a reflector plate; 2-a feed mechanism; 21-a feed tab; 22-balun; 3-a main metal ring; 4-secondary metal ring; 5-an insulating column;
6-a feed tab; 7-main metal ring.
Detailed Description
Example 1
As shown in fig. 1, fig. 2 and fig. 3, the low-profile high-isolation dual-polarized antenna radiation unit of the present embodiment includes a reflection plate 1, a feeding mechanism 2 and a main metal ring 3; the main metal ring 3 is of a sheet-like structure, the contour of the main metal ring 3 is circular, the inner diameter D1 of the main metal ring 3 is within the range of (0.25 x λ) ± 10%, the main metal ring 3 is positioned on the reflecting surface of the reflecting plate 1, the distance D2 between the top surface of the main metal ring 3 and the reflecting surface of the reflecting plate 1 is within the range of (0.125 x λ) ± 10%, λ is a working wavelength, the working frequency of the embodiment is 350-370 MHz, the working wavelength λ is determined by the working frequency f, λ = v/f, v is the propagation speed of electromagnetic waves, and is equivalent to the speed of light; the feed mechanism 2 comprises 4 feed pieces 21 with the same structure, the 4 feed pieces 21 are all surrounded by the main metal ring 3, the 4 feed pieces 21 are arranged in a cross shape around the center of the main metal ring 3, the center of the main metal ring 3 refers to the center of the outline shape, the inner end of each feed piece 21 is close to the center of the main metal ring 3, the outer end of each feed piece 21 is coupled and fed with the main metal ring 3, the point on the main metal ring 3, which is connected with the feed pieces 21 in a feed mode, is a feed point, the main metal ring 3 is divided into four path sections A through the feed point, the length of each path section A is the same, and each feed piece 21 is installed on the reflecting plate 1 through a balun 22. As shown in fig. 4 and 5, the isolation of the low-profile high-isolation dual-polarized antenna radiation unit is better than 80dB in the simulation process; in addition, the inner ends of the feed plates 21 are all in a trapezoidal sheet structure, and by adopting the structural design, the isolation between the first polarization port and the second polarization port of the low-profile high-isolation dual-polarization antenna radiation unit can be further improved, generally by about 3%, so that the anti-interference capability of the low-profile high-isolation dual-polarization antenna radiation unit is further improved.
In order to make the structure of the low-profile high-isolation dual-polarized antenna radiation unit more reasonable and the application range wider, as shown in fig. 1, fig. 2 and fig. 3, the low-profile high-isolation dual-polarized antenna radiation unit further comprises an auxiliary metal ring 4, the shape of the auxiliary metal ring 4 is the same as that of the main metal ring 3, and the auxiliary metal ring 4 is relatively fixed with the main metal ring 3; the main metal ring 3 and the auxiliary metal ring 4 are both arranged on the reflecting plate 1 through the insulating column 5; orthographic projections of the main metal ring 3 and the auxiliary metal ring 4 on the reflecting surface of the reflecting plate 1 are concentrically arranged, the main metal ring 3 is surrounded by the auxiliary metal ring 4, and the outer edge of the main metal ring 3 is in feed connection with the inner edge of the auxiliary metal ring 4. The number of secondary metal rings 4 is at least 2; the orthographic projection of the auxiliary metal rings 4 on the reflecting surface of the reflecting plate 1 is arranged in a layer-by-layer surrounding manner, and between 2 adjacent auxiliary metal rings 4: the outer edge of the inner secondary metal ring 4 is in feed connection with the inner edge of the outer secondary metal ring 4; the outer diameter D3 of the outermost secondary metal ring 4 is in the range of (0.5 x λ) ± 10%; the top surface of each secondary metal ring 4 is coplanar with the top surface of the primary metal ring 3. Orthographic projections of the main metal ring 3 and the auxiliary metal ring 4 on the reflecting surface of the reflecting plate 1: the gap width D4 between the main metal ring 3 and the innermost sub-metal ring 4 and the gap width D5 between the adjacent 2 sub-metal rings 4 are both in the range of 0.1mm to 7 mm.
Example 2
The present embodiment is different from embodiment 1 in that: as shown in fig. 6, the feeding pieces 6 and the main metal ring 7 are connected by physical feeding, and the physical feeding connection is welding. Such a structure is simpler than that of embodiment 1, and is more convenient to produce.
Claims (7)
1. The utility model provides a dual polarized antenna radiating element of high isolation of low section which characterized in that: the device comprises a reflecting plate, a feed mechanism and a main metal ring; the main metal ring is a sheet-like structure, the inner diameter D1 of the main metal ring is in the range of (0.25 x lambda) ± 10%, the main metal ring is positioned on the reflecting surface of the reflecting plate, the distance D2 between the top surface of the main metal ring and the reflecting surface of the reflecting plate is in the range of (0.125 x lambda) ± 10%, and lambda is the working wavelength; the feeding mechanism comprises 4 feeding pieces with the same structure, the 4 feeding pieces are all surrounded by a main metal ring, the 4 feeding pieces are distributed in a cross shape around the center of the main metal ring, the inner end of each feeding piece is close to the center of the main metal ring, the outer end of each feeding piece is in feeding connection with the main metal ring, the point on the main metal ring, which is in feeding connection with the feeding piece, is a feeding point, the main metal ring is divided into four sections of path sections through the feeding point, the length of each section of path section is the same, and each feeding piece is installed on the reflecting plate through a balun; the auxiliary metal ring is the same as the main metal ring in shape and is relatively fixed with the main metal ring; orthographic projections of the main metal ring and the auxiliary metal ring on the reflecting surface of the reflecting plate are concentrically arranged, the main metal ring is surrounded by the auxiliary metal ring, and the outer edge of the main metal ring is in feed connection with the inner edge of the auxiliary metal ring; the number of the secondary metal rings is at least 2; the orthographic projection of the auxiliary metal rings on the reflecting surface of the reflecting plate is arranged in a surrounding mode layer by layer, and between 2 adjacent auxiliary metal rings: the outer edge of the inner secondary metal ring is in feed connection with the inner edge of the outer secondary metal ring; the outer diameter D3 of the outermost secondary metal ring is in the range of (0.5 x λ) ± 10%.
2. A low-profile high-isolation dual polarized antenna radiating element according to claim 1, wherein: the outline of the main metal ring is in a circular or regular polygon structure; when the outline of the main metal ring is in a regular polygon structure, the number M of the edges of the outline of the main metal ring is more than 3, and M is a multiple of 2.
3. A low-profile high-isolation dual polarized antenna radiating element according to claim 1, wherein: and each feed sheet is connected with the main metal ring through physical feed connection or coupling feed connection.
4. A low-profile high-isolation dual polarized antenna radiating element according to claim 1, wherein: the top surface of the secondary metal ring is coplanar with the top surface of the primary metal ring.
5. A low-profile high-isolation dual polarized antenna radiating element according to claim 1, wherein: the distance between the top surface of the secondary metal ring and the reflecting surface of the reflecting plate is smaller than the distance between the top surface of the primary metal ring and the reflecting surface of the reflecting plate.
6. A low-profile high-isolation dual polarized antenna radiating element according to claim 1, wherein: orthographic projections of the main metal ring and the auxiliary metal ring on the reflecting surface of the reflecting plate: the gap width D4 between the main metal ring and the innermost secondary metal ring and the gap width D5 between the adjacent 2 secondary metal rings are both in the range of 0.1 mm-7 mm.
7. A low-profile high-isolation dual polarized antenna radiating element according to claim 6, wherein: the main metal ring and the auxiliary metal ring are both installed on the reflecting plate through the insulating columns.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210386685.2A CN114464990B (en) | 2022-04-14 | 2022-04-14 | Low-profile high-isolation dual-polarized antenna radiation unit |
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|---|---|---|---|
| CN202210386685.2A CN114464990B (en) | 2022-04-14 | 2022-04-14 | Low-profile high-isolation dual-polarized antenna radiation unit |
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| CN114464990A CN114464990A (en) | 2022-05-10 |
| CN114464990B true CN114464990B (en) | 2022-07-08 |
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| CN114976597B (en) * | 2022-05-26 | 2024-03-01 | 福耀玻璃工业集团股份有限公司 | Vehicle-mounted glass integrated with antenna, manufacturing method and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682611A (en) * | 2013-12-16 | 2014-03-26 | 广州杰赛科技股份有限公司 | Broadband dual-polarized antenna |
| CN104733844A (en) * | 2015-03-21 | 2015-06-24 | 西安电子科技大学 | Planar-broadband dual-polarization base station antenna |
| WO2017177927A1 (en) * | 2016-04-12 | 2017-10-19 | Huawei Technologies Co., Ltd. | Ultra broad band dual polarized radiating element for a base station antenna |
| CN108767452A (en) * | 2018-04-24 | 2018-11-06 | 昆山恩电开通信设备有限公司 | A kind of high-performance dual-polarization radiation unit and isolation adjusting method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882004B (en) * | 2012-06-29 | 2016-08-03 | 华为技术有限公司 | A kind of electromagnetic dipole antenna |
| CN205335424U (en) * | 2016-01-27 | 2016-06-22 | 上海安费诺永亿通讯电子有限公司 | Low section dual polarized antenna |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682611A (en) * | 2013-12-16 | 2014-03-26 | 广州杰赛科技股份有限公司 | Broadband dual-polarized antenna |
| CN104733844A (en) * | 2015-03-21 | 2015-06-24 | 西安电子科技大学 | Planar-broadband dual-polarization base station antenna |
| WO2017177927A1 (en) * | 2016-04-12 | 2017-10-19 | Huawei Technologies Co., Ltd. | Ultra broad band dual polarized radiating element for a base station antenna |
| CN108767452A (en) * | 2018-04-24 | 2018-11-06 | 昆山恩电开通信设备有限公司 | A kind of high-performance dual-polarization radiation unit and isolation adjusting method |
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