CN105990684B - Radiating element and dual polarized antenna - Google Patents
Radiating element and dual polarized antenna Download PDFInfo
- Publication number
- CN105990684B CN105990684B CN201510080402.1A CN201510080402A CN105990684B CN 105990684 B CN105990684 B CN 105990684B CN 201510080402 A CN201510080402 A CN 201510080402A CN 105990684 B CN105990684 B CN 105990684B
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- feed tab
- feed
- wavelength
- tab
- radiation patch
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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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- 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
-
- 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
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The present invention provides a kind of radiating elements.It include: square radiation patch；First feed tab and the second feed tab are suspended in the lower section of the square radiation patch, and first feed tab is configured as realizing+45 ° of polarization, and second feed tab is configured as realizing -45 ° of polarization；Reflecting plate is located at the lower section of first feed tab and second feed tab；And first cable and the second cable, the inner conductor of first cable pass through the reflecting plate and are connected to first feed tab, the inner conductor of second cable passes through the reflecting plate and is connected to second feed tab；Wherein, the distance of the square radiation patch to the reflecting plate is 0.115~0.133 wavelength, first feed tab and the distance of second feed tab to the reflecting plate are that the distance of 0.07~0.08 wavelength, first feed tab and second feed tab to the square radiation patch is 0.044~0.051 wavelength.The present invention also provides a kind of dual polarized antennas including above-mentioned radiation cell array.
Description
Technical field
The present invention is generally related to wireless communication field, more specifically, is related to a kind of radiating element and including should
The dual polarized antenna of radiating element.
Background technique
In mobile communication system, a necessary component of the antenna for base station as base station, realizes wireless signal
Transmission and determine the coverage area of network.Dual polarized antenna is a kind of new antenna technology ,+45 ° of a combination thereof and-
45 ° of two secondary mutually orthogonal antenna of polarization direction simultaneously works at the same time under transmission duplex mode, and therefore, dual polarized antenna can save
The antenna amount of province single directional base station.
Currently, dual polarized antenna generallys use balance balun feed mode, wherein as supporting element and balanced fed element
The height of balance balun generally require a quarter wavelength, in other words, the spoke being designed to using balance balun feed mode
The more difficult limitation for breaking through quarter-wave height of unit is penetrated, to limit the volume of antenna for base station to a certain extent.This
Outside, the radiating element designed using balance balun feed mode, required part is more, and installation is complex, and at
This is higher.
Therefore, it is necessary to provide a kind of improved radiating element and dual polarized antenna.
Summary of the invention
In view of the above problems, the invention proposes a kind of dual polarized antenna of novel couple feed and its radiation are single
Member.
According to an aspect of the present invention, it proposes a kind of radiating elements characterized by comprising square radiation patch
Piece；First feed tab and the second feed tab, are suspended in the lower section of the square radiation patch, and first feed tab is matched
+ 45 ° of polarization of realization are set to, second feed tab is configured as realizing -45 ° of polarization；Reflecting plate is located at first feed
The lower section of piece and second feed tab；And first cable and the second cable, the inner conductor of first cable passes through described
Reflecting plate and it is connected to first feed tab, the inner conductor of second cable passes through the reflecting plate and is connected to institute
State the second feed tab；Wherein, the distance of square radiation patch to the reflecting plate is 0.115~0.133 wavelength, described
The distance of first feed tab and second feed tab to the reflecting plate is 0.07~0.08 wavelength, first feed tab and
The distance of second feed tab to the square radiation patch is 0.044~0.051 wavelength.
In one embodiment, above-mentioned radiating element further include: third feed tab and the 4th feed tab are suspended in described
The lower section of square radiation patch, wherein first feed tab and the third feed tab are configured as realizing+45 ° of polarization,
Second feed tab and the 4th feed tab are configured as realizing -45 ° of polarization；And third cable and the 4th cable, institute
The inner conductor for stating third cable passes through the reflecting plate and is connected to the third feed tab, the inner conductor of the 4th cable
Across the reflecting plate and it is connected to the 4th feed tab；Wherein, the length of the square radiation patch be 0.33~
0.38 wavelength, first feed tab, second feed tab, the length of the third feed tab and the 4th feed tab are
0.111~0.128 wavelength, width are 0.055~0.064 wavelength.
Advantageously, the distance of square radiation patch to the reflecting plate is 0.124 wavelength, first feed tab
Distance with second feed tab to the reflecting plate is 0.075 wavelength, first feed tab and second feed tab
Distance to the square radiation patch is 0.048 wavelength.
Advantageously, the length of the square radiation patch is 0.355 wavelength, first feed tab, second feedback
The length of electric piece, the third feed tab and the 4th feed tab is 0.12 wavelength, and width is 0.06 wavelength.
In order to realize+45 ° and -45 ° polarization, advantageously, first feed tab, second feed tab, the third
Feed tab and the 4th feed tab are in the same plane, and first feed tab and the third feed tab are along the pros
One diagonal line of shape radiation patch is symmetrical arranged, and second feed tab and the 4th feed tab are along the square radiation
Another diagonal line of patch is symmetrical arranged.
In one example, first cable, second cable, the third cable and the 4th cable is interior
Conductor is respectively connected to first feed tab, second feed tab, the third feed tab and the 4th feed tab
Diagonal line intersection point.
The square radiation patch can be such as sheet metal or cover copper pcb board.Similarly, first feed tab,
Second feed tab, any feed tab in the third feed tab and the 4th feed tab can for such as sheet metal or
Cover copper pcb board.
According to an aspect of the present invention, it proposes a kind of dual polarized antennas comprising the spoke in any of the above embodiment
Penetrate cellular array.
The radiating element and dual polarized antenna of various embodiments of the present invention can be effectively reduced radiation patch to reflecting plate
Between section distance, and required part is less, installs also relatively easy.
Detailed description of the invention
After description by reference to a specific embodiment of the invention given by following drawings, it is better understood with this
Invention, and other objects of the present invention, details, features and advantages will become apparent.In the accompanying drawings:
Fig. 1 is the perspective view according to the radiating element of one embodiment of the present of invention；
Fig. 2 is the side view according to the radiating element of one embodiment of the present of invention；And
Fig. 3 is the top view according to the radiating element of one embodiment of the present of invention.
Specific embodiment
The preferred embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Preferred embodiment, however, it is to be appreciated that may be realized in various forms the disclosure without the embodiment party that should be illustrated here
Formula is limited.On the contrary, these embodiments are provided so that this disclosure will be more thorough and complete, and can be by the disclosure
Range is fully disclosed to those skilled in the art.
Fig. 1 shows the schematic diagram of radiating element according to an embodiment of the invention.Referring to Fig.1, illustrative spoke
Penetrating unit 10 includes square radiation patch 11, the first feed tab 12a, the second feed tab 12b, third feed tab 12c, the 4th feedback
Electric piece 12d, reflecting plate 13, the first cable 14a, the second cable 14b, third cable 14c and the 4th cable 14d.
First feed tab 12a, the second feed tab 12b, third feed tab 12c and the 4th feed tab 12d is suspended in square
11 lower section of radiation patch.Wherein, the first feed tab 12a and third feed tab 12c polarizes for realizing+45 °, the second feed tab
12b and the 4th feed tab 12d polarizes for realizing -45 °.Reflecting plate 13 is located at the first feed tab 12a, the second feed tab 12b, the
Below three feed tab 12c and the 4th feed tab 12d.Square radiation patch 11 and the first, second, third and fourth feed tab
12a, 12b, 12c and 12d can be fixed to reflecting plate 13 by supporting element, which can be by the non-conductive material such as such as plastics
Material is made.
Referring now still to Fig. 1, the inner conductor of the first cable 14a passes through reflecting plate 13 and is connected to the first feed tab 12a, is used for
Realize feed.Similarly, the inner conductor of the second cable 14b passes through reflecting plate 13 and is connected to the second feed tab 12b, third electricity
The inner conductor of cable 14c passes through reflecting plate 13 and is connected to third feed tab 12c, and the inner conductor of the 4th cable 14d passes through reflection
Plate 13 and it is connected to the 4th feed tab 12d.First, second, third and fourth cable 14a, 14b, 14c and 14d can be
Such as coaxial cable, specifically, as shown in Figure 2, the dielectric layer 122 of coaxial cable passes through reflecting plate 13, and outer conductor 123 is located at
13 lower section of reflecting plate, inner conductor 121, which upwardly extends, is connected to feed tab.First, second, third and fourth cable 14a, 14b,
The inner conductor of 14c and 14d can be connected to the first, second, third and fourth feed tab 12a for example, by the mode of welding,
12b, 12c and 12d.It is understood that the inner conductor of first, second, third and fourth cable 14a, 14b, 14c and 14d
The first, second, third and fourth feed tab 12a, 12b, 12c and 12d can also be connected to by other any modes appropriate.
In order to realize+45 ° and -45 ° of polarization directions, advantageously, first, second, third and fourth feed tab 12a,
12b, 12c and 12d are in the same plane, wherein the first feed tab 12a and third feed tab 12c is along square radiation patch
One diagonal line of piece 11 is symmetrical arranged, and the second feed tab 12b and the 4th feed tab 12d are along the another of square radiation patch 11
One diagonal line is symmetrical arranged, as shown in Figure 3.
Square radiation patch 11 to reflecting plate 13 distance d1It is determined based on bandwidth requirements, for example, distance d1For
0.115~0.133 wavelength, advantageously, distance d1For 0.124 wavelength.First, second, third and fourth feed tab 12a, 12b,
12c and 12d to reflecting plate 13 distance d2For example, 0.07~0.08 wavelength, advantageously, distance d2For 0.075 wavelength.The first,
The distance d of second, third and the 4th feed tab 12a, 12b, 12c and 12d to square radiation patch 113For example, 0.044~
0.051 wavelength, advantageously, distance d3For 0.048 wavelength.
The side length of square radiation patch 11 is such as 0.33~0.38 wavelength, and advantageously, side length is 0.355 wavelength.The
One, second, third and the 4th feed tab 12a, 12b, 12c and 12d can be such as rectangle, the length is such as 0.111~
0.128 wavelength, width are such as 0.055~0.064 wavelength, and advantageously, length is 0.12 wavelength, and width is 0.06 wavelength.
Normally, the inner conductor of the first, second, third and fourth cable 14a, 14b, 14c and 14d and first, second,
The tie point (that is, feeding point) of three and the 4th feed tab 12a, 12b, 12c and 12d is the cornerwise intersection point of rectangle feed tab.
It is understood that in order to which port Impedance matching is better achieved, feeding point also be can be set near diagonal line intersection point.
Square radiation patch 11 can be sheet metal, for example, copper, aluminium, aluminium are tin plating etc., or be also possible to cover copper
Pcb board.Similarly, the first, second, third and fourth feed tab 12a, 12b, 12c and 12d can be sheet metal, for example, copper,
Aluminium, aluminium are tin plating etc., or are also possible to cover the pcb board of copper.
It should be noted that above embodiment is the description carried out so that radiating element includes four feed tabs as an example, it can
With understanding, in other embodiments, radiating element can also only include two feed tabs, and one of feed tab is for real
Existing+45 ° of polarization, another feed tab polarize for realizing -45 °.
Multiple radiating elements in the above embodiment of the present invention are arranged with array manner, may be constructed dual-polarized array day
Line.
It will be appreciated to those of skill in the art that above-mentioned state is used only for example, it is not intended to limit the present invention
Application range.Those skilled in the art can be directed to every kind of specific application, realize described function in a manner of flexible, but
It is that this realization decision should not be interpreted as causing a departure from the scope of this disclosure.
Claims (8)
1. a kind of radiating element characterized by comprising
Square radiation patch；
First feed tab and the second feed tab are suspended in the lower section of the square radiation patch, the first feed tab quilt
+ 45 ° of polarization are arranged for carrying out, second feed tab is configured as realizing -45 ° of polarization；
Third feed tab and the 4th feed tab are suspended in the lower section of the square radiation patch, wherein first feed
Piece and the third feed tab are configured as realizing+45 ° of polarization, and second feed tab is configured as with the 4th feed tab
Realize -45 ° of polarization；
Reflecting plate is located at the lower section of first feed tab and second feed tab；
First cable and the second cable, the inner conductor of first cable pass through the reflecting plate and are connected to first feedback
Electric piece, the inner conductor of second cable pass through the reflecting plate and are connected to second feed tab；
Third cable and the 4th cable, the inner conductor of the third cable pass through the reflecting plate and are connected to the third feedback
Electric piece, the inner conductor of the 4th cable pass through the reflecting plate and are connected to the 4th feed tab；Wherein, the pros
The distance of shape radiation patch to the reflecting plate is 0.115~0.133 wavelength, first feed tab and second feed tab
Distance to the reflecting plate is 0.07~0.08 wavelength, first feed tab and second feed tab to the square
The distance of radiation patch is 0.044~0.051 wavelength；
Wherein, the length of the square radiation patch is 0.33~0.38 wavelength, first feed tab, second feed
The length of piece, the third feed tab and the 4th feed tab is 0.111~0.128 wavelength, and width is 0.055~0.064
Wavelength.
2. radiating element according to claim 1, which is characterized in that the square radiation patch to the reflecting plate
Distance is that the distance of 0.124 wavelength, first feed tab and second feed tab to the reflecting plate is 0.075 wavelength,
The distance of first feed tab and second feed tab to the square radiation patch is 0.048 wavelength.
3. radiating element according to claim 1, which is characterized in that the length of the square radiation patch is 0.355
Wavelength, first feed tab, second feed tab, the length of the third feed tab and the 4th feed tab are 0.12
Wavelength, width are 0.06 wavelength.
4. radiating element according to claim 1, which is characterized in that first feed tab, second feed tab, institute
It states third feed tab and the 4th feed tab is in the same plane, first feed tab and the third feed tab are along institute
A diagonal line for stating square radiation patch is symmetrical arranged, and second feed tab and the 4th feed tab are along the pros
Another diagonal line of shape radiation patch is symmetrical arranged.
5. radiating element according to claim 1, which is characterized in that first cable, second cable, described
The inner conductor of three cables and the 4th cable is respectively connected to first feed tab, second feed tab, the third
The diagonal line intersection point of feed tab and the 4th feed tab.
6. radiating element according to claim 1, which is characterized in that the square radiation patch is sheet metal or covers copper
Pcb board.
7. radiating element according to claim 1, which is characterized in that first feed tab, second feed tab, institute
Any feed tab in third feed tab and the 4th feed tab is stated as sheet metal or covers copper pcb board.
8. a kind of dual polarized antenna, which is characterized in that the battle array including radiating element such as of any of claims 1-7
Column.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510080402.1A CN105990684B (en) | 2015-02-13 | 2015-02-13 | Radiating element and dual polarized antenna |
| PCT/CN2016/073346 WO2016127893A1 (en) | 2015-02-13 | 2016-02-03 | Radiation unit and bipolar antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510080402.1A CN105990684B (en) | 2015-02-13 | 2015-02-13 | Radiating element and dual polarized antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105990684A CN105990684A (en) | 2016-10-05 |
| CN105990684B true CN105990684B (en) | 2019-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510080402.1A Active CN105990684B (en) | 2015-02-13 | 2015-02-13 | Radiating element and dual polarized antenna |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105990684B (en) |
| WO (1) | WO2016127893A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959110A (en) * | 2017-11-15 | 2018-04-24 | 南京濠暻通讯科技有限公司 | A kind of GSM dual polarized panel antennas |
| CN109037906A (en) * | 2018-06-04 | 2018-12-18 | 深圳市飞荣达科技股份有限公司 | A kind of dual polarized antenna based on plastic cement electroplating technology |
| US10931014B2 (en) | 2018-08-29 | 2021-02-23 | Samsung Electronics Co., Ltd. | High gain and large bandwidth antenna incorporating a built-in differential feeding scheme |
| WO2020133321A1 (en) * | 2018-12-29 | 2020-07-02 | 瑞声精密制造科技(常州)有限公司 | Antenna unit and array antenna |
| CN109728421A (en) * | 2019-01-10 | 2019-05-07 | 维沃移动通信有限公司 | A kind of antenna structure and communication terminal |
| CN110649376B (en) * | 2019-09-06 | 2023-06-09 | 维沃移动通信有限公司 | Antenna and electronic equipment |
| CN110649366B (en) * | 2019-09-20 | 2021-04-20 | 维沃移动通信有限公司 | Antenna and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2916958Y (en) * | 2005-12-10 | 2007-06-27 | 烟台高盈科技有限公司 | 90 degree dual polarized plate-shaped base station antenna |
| CN101944654A (en) * | 2009-05-26 | 2011-01-12 | 香港城市大学 | Isolation enhancement technique for dual-polarized probe-fed patch antenna |
| CN104009299A (en) * | 2014-05-14 | 2014-08-27 | 上海交通大学 | Dual-polarization base station antenna |
| CN204441474U (en) * | 2015-02-13 | 2015-07-01 | 安弗施无线射频系统（上海）有限公司 | Radiating element and dual polarized antenna |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004008770U1 (en) * | 2004-06-03 | 2004-08-12 | Kathrein-Werke Kg | Mobile radio base station antenna element has conducting main reflector, dual polarized radiator and cross shaped passive subreflector |
| US7616168B2 (en) * | 2005-08-26 | 2009-11-10 | Andrew Llc | Method and system for increasing the isolation characteristic of a crossed dipole pair dual polarized antenna |
| CN201946738U (en) * | 2010-12-03 | 2011-08-24 | 广东通宇通讯股份有限公司 | Broad band dual-polarization antenna unit |
| CN102176536A (en) * | 2011-01-28 | 2011-09-07 | 京信通信技术(广州)有限公司 | Dual-polarization radiating element and broadband base station antenna |
| CN103401062A (en) * | 2013-08-13 | 2013-11-20 | 南京澳博阳射频技术有限公司 | Dual-polarized broadband radiating element used on TD-LTE intelligent antenna |
| CN103474757A (en) * | 2013-09-11 | 2013-12-25 | 华为技术有限公司 | Antenna system |
| CN204130706U (en) * | 2014-07-16 | 2015-01-28 | 深圳市维力谷无线技术有限公司 | A kind of dual polarization wideband high-gain wall hanging built-in aerial |
-
2015
- 2015-02-13 CN CN201510080402.1A patent/CN105990684B/en active Active
-
2016
- 2016-02-03 WO PCT/CN2016/073346 patent/WO2016127893A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2916958Y (en) * | 2005-12-10 | 2007-06-27 | 烟台高盈科技有限公司 | 90 degree dual polarized plate-shaped base station antenna |
| CN101944654A (en) * | 2009-05-26 | 2011-01-12 | 香港城市大学 | Isolation enhancement technique for dual-polarized probe-fed patch antenna |
| CN104009299A (en) * | 2014-05-14 | 2014-08-27 | 上海交通大学 | Dual-polarization base station antenna |
| CN204441474U (en) * | 2015-02-13 | 2015-07-01 | 安弗施无线射频系统（上海）有限公司 | Radiating element and dual polarized antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105990684A (en) | 2016-10-05 |
| WO2016127893A1 (en) | 2016-08-18 |
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