CN102916259B - Multiple-input and multiple-output antenna - Google Patents
Multiple-input and multiple-output antenna Download PDFInfo
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- CN102916259B CN102916259B CN201110221719.4A CN201110221719A CN102916259B CN 102916259 B CN102916259 B CN 102916259B CN 201110221719 A CN201110221719 A CN 201110221719A CN 102916259 B CN102916259 B CN 102916259B
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- antenna
- dual polarized
- antenna element
- mimo
- mimo antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—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
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention relates to a multiple-input and multiple-output (MIMO) antenna. The multiple-input and multiple-output antenna comprises at least two dual polarized antennae units which are separately vertically arranged up from top to bottom, all angles of inclination between the dual polarized antennae units and the ground normal are consistent, and each dual polarized antenna unit comprises a plurality of antenna arrays arranged vertically. By the MIMO antenna in vertical separation mode, the problem that an MIMO antenna in a horizontal separation mode occupies larger air space is solved, consistency for the angles of inclination of the dual polarized antennae units is easy to guarantee, and week-correlation of spatial channels of the MIMO antenna is realized by top-to-bottom vertical separation.
Description
Technical field
The present invention relates to mobile communication technology, particularly relate to a kind of multiple-input, multiple-output (MultipleInput and Multiple Output is called for short MIMO) antenna assembly.
Background technology
Current mobile communications network has developed into G mobile Communication network (The thirdGeneration Mobile Telecommunication is called for short 3G), and worldwide large scale deployment is also commercial for 3G network.Along with data service and the continuous of mobile Internet are popularized and promote, international communication standards is organized and is formulated mobile communication Long Term Evolution (Long TimeEvolution, be called for short LTE) and the technical standard such as 4G, to meet network technology and service ability ground development.Because MIMO technology can fully use separate space propagation path greatly to promote network service rate and link performance, become one of core technology of most critical in LTE and following 4G technology.
Current 2G and 3G network great majority use low-frequency range resource, such as global system for mobile communications (Global System for Mobile communications, be called for short GSM) use 900MHz and code division multiple access access (Code Division Multiple Access, be called for short CDMA) use 800MHz, and LTE and 4G following by the very large 2GHz that may use with super band, the signal propagation of such 2G and 3G network will be better than LTE and 4G system.
When current base station site is difficult to increase, operator generally can adopt the station construction scheme of multisystem cobasis to dispose LTE and 4G network, such LTE and 4G system just needs to be strengthened by MIMO multi-antenna technology to cover to reach with 2G/3G base station with covering level, and this promotes LTE and 4G system covering level by making the mimo antenna number of LTE and 4G system increase as much as possible.
For the application of MIMO technology, need between transmitter from receiver, there is multiple different spatial propagation path, the spatial channel correlation between multiple transmitter and receiver directly has influence on MIMO technical performance and service efficiency.For the service condition of MIMO, existing MIMO multiple antennas deployment scheme is generally adopt between many antennas to pull open certain horizontal range, the scheme of isolating to utilize level is to produce the weak dependence channel of MIMO, thus the final serviceability ensureing MIMO technology.But this scheme, for operator deployment network, can cause very large difficulty.Because people's showing great attention to for electromagnetic radiation now, a lot of base station site is difficult to increase antenna amount, a lot of base stations terrace is difficult to enough spaces to ensure the horizontal isolation distance of many antennas simultaneously, particularly when mimo antenna number requires the scene reaching more than 4 and 4.Therefore, the different mimo antenna implementation of design is needed to solve this problem, to ensure the smooth deployment of following LTE and 4G network.
Summary of the invention
The object of the invention is to propose a kind of mimo antennas device, only take less sky, base station space of planes and dispose.
For achieving the above object, the invention provides a kind of mimo antennas device, comprising:
At least two dual polarized antenna units that isolation is in vertical direction arranged, at least two dual polarized antenna units are all consistent with the inclination angle between the normal of ground, and described dual polarized antenna unit comprises the antenna element of multiple vertical arrangement.
Further, in described at least two dual polarized antenna units, spacing d > 0.5 λ of the neighboring edge antenna element of adjacent bipolar antenna element, λ are antenna band support center frequency point wavelength.
Preferably, described spacing d is 0.7 λ ~ 1 λ.
Preferably, the pattern of described dual polarized antenna unit adopts+45 degree and-45 degree polarization modes.
Further, also comprise the antenna cover of unified for described at least two dual polarized antenna units encapsulation.
Further, the number of the antenna element that described dual polarized antenna unit comprises is determined by antenna gain, and the total length of the mimo antennas device that described at least two dual polarized antenna units are formed is determined by the number of described antenna element.
Optionally, described dual-polarized antenna unit is two, is respectively the upper antenna element and lower antenna element of isolating up and down in the vertical direction.
Further, described upper antenna element and lower antenna element and different frequency range network antenna unit are encapsulated in same antenna outer cover side by side.
Based on technique scheme, the mimo antenna of vertical isolation pattern of the present invention can solve the problem taking sky, more base station space of planes that mimo antenna under horizontal isolation mode exists, and be also easy to the inclination angle consistency ensureing multiple dual polarized antenna unit, and realize the space channel weak dependence of mimo antenna by the mode of upper and lower vertical isolation.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of an embodiment of mimo antennas device of the present invention.
Fig. 2 is the structural representation of another embodiment of mimo antennas device of the present invention.
Fig. 3 is the structural representation of the another embodiment of mimo antennas device of the present invention.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
As shown in Figure 1, be the structural representation of an embodiment of mimo antennas device of the present invention.In the present embodiment, have employed the mode that different vertical isolation is in the past arranged, be about to the vertical arrangement that at least two dual polarized antenna units carry out as shown in Figure 1, shown in Fig. 1 is the example of the MIMO antenna device of two dual polarized antenna units composition, in this example embodiment, antenna element 10 is called for short at dual polarized antenna unit by the top, dual-polarization cells is on the lower called lower antenna element 20 for short, upper antenna element 10 and lower antenna element 20 form by the antenna element 30 of multiple vertical arrangement, upper antenna element 10 and lower antenna element 20 form vertical isolation in vertical direction, because each antenna element includes the polarization mode of two different angles, because which form the MIMO antenna device of 4 weak spatial coherences, thus be applicable to the mimo antenna design of current various main flow, such as 4 × 2, 4 × 4MIMO antenna design etc.
In order to realize good MIMO performance, also to ensure that the inclination angle between at least two dual polarized antenna units with ground normal is all consistent, thus improve the overlapping covered of at least two dual polarized antenna units.And the pattern optimum selection of each dual polarized antenna unit adopts+45 degree and-45 degree polarization modes.Here angle refers to the polarised direction of antenna, namely represent that the signal wave of antenna will send with positive and negative 45 degree of polarised directions, produce two mutually orthogonal signal waves, due to the difference of the polarised direction of two signal waves, just reduce the correlation of two paths of signals, thus produce weak correlated channels.
The present embodiment have employed vertical isolation mode, just increases to some extent on antenna length, and can not propose space requirement as the mimo antenna of existing horizontal isolation mode to base station terrace, also more easily ensures the inclination angle consistency of at least two dual polarized antenna units.For more multiple antennas 8 × 2,8 × 4MIMO antenna etc., only level isolation and vertical isolation need be combined, on the terrace of base station, the antenna of vertical isolation is overlapped in level isolation deployment two, and in level, level need not isolate deployment 4 antennas, thus reduce the requirement for sky, base station space of planes under more mimo antenna configuration modes.
In embodiments of the present invention, in at least two dual polarized antenna units, spacing d > 0.5 λ of the neighboring edge antenna element (d as shown in Figure 1) of adjacent bipolar antenna element, λ are antenna band support center frequency point wavelength.In other words, the distance between the nethermost antenna element of the upper antenna element 10 in Fig. 1 embodiment that spacing here refers to and the uppermost antenna element of lower antenna element 20, this spacing should the antenna band support center frequency point wavelength of at least 0.5 times.This spacing is preferably 0.7 λ ~ 1 λ, thus can not only meet weak spatial coherence, nor as the problem causing because forming long antenna being difficult to dispose.If spacing is too small, then cannot reach the antenna port insulated degree requirement that industry standard specifies, and if spacing is excessive, then cause antenna length long, impact dispose.
As shown in Figure 2, be the structural representation of another embodiment of mimo antennas device of the present invention.Compared with a upper embodiment, at least two dual polarized antenna units unifications based on vertical isolation pattern are encapsulated in an antenna cover by the present embodiment, be encapsulated in antenna cover 40 by upper antenna element 10 and the unification of lower antenna element 20, and upper antenna element 10 and lower antenna element 20 adopt respective feeding network, thus realize the integrated of mimo antenna, profile, this MIMO antenna device can regard an antenna as, therefore only a pole can be used when setting up and installing, and build without the need to more pole, in addition being encapsulated into same antenna cover then more easily keeps all dual polarized antenna units to have identical angle of declination and azimuth, each parameter consistency is better, thus improve MIMO performance.
Two antennas of existing horizontal isolated antennas need to be separately fixed on two poles, are easy to the error between introducing two poles, cause the inconsistent of Downtilt.And the present embodiment can overcome the defect of this prior art well.
For MIMO antenna device, the number of the antenna element that dual polarized antenna unit comprises is determined by antenna gain, and the total length of the mimo antennas device of at least two dual polarized antenna unit formations is determined by the number of antenna element.In general, 15dBi antenna is made up of 4 ~ 6 antenna element, 18dBi is made up of 8 ~ 12 antenna element, often increase 3dBi, the antenna element that will double number, according to present Antenna Design technique, general antenna element spacing can be taken as 0.7 λ ~ 1 λ, i.e. the antenna band support center frequency point wavelength of 0.7 ~ 1 times.
The spacing of each antenna element adds the spacing etc. between the frame length of antenna cover and dual polarized antenna unit, then can calculate the total length of total MIMO antenna device.For existing 2G/3G network, because the frequency used is low-frequency range, therefore overall antenna length degree can be longer, and for LTE and 4G network, because frequency raises, then antenna size can be made to diminish, just can avoid the problem that antenna is long, that is, the present invention applies being more adapted at using in the network of more than 2GHz frequency.
As shown in Figure 3, be the structural representation of the another embodiment of mimo antennas device of the present invention.Compared with each embodiment before, upper antenna element 10 and lower antenna element 20 are encapsulated in same antenna outer cover 40 with different frequency range network antenna unit (the 2G/3G antenna element 50 as in Fig. 3) by the present embodiment side by side, thus form integrated antenna assembly, the length optional of antenna cover 40 rounds the larger value of body length, and the level interval between the vertical isolation arrangement that upper antenna element 10 and lower antenna element 20 are formed and 2G/3G antenna element only need ensure the independence of two system receiving and transmitting signals.From the appearance, this integrated antenna assembly is counted as an antenna, convenient when arranging installation.
In addition, if what mimo antenna adopted is the higher-frequency point that LTE/4G network etc. uses, the length of each antenna element is all shorter, therefore the whole MIMO antenna structure adopting the mode of isolating layout up and down to be formed does not have larger gap with the antenna length of the lower frequency adopting 2G/3G network etc. to use, thus effectively make use of antenna length and distinguish little feature, both are integrated, and significantly can not increase the antenna length of this shared antenna structure.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (6)
1. a mimo antennas device, it is characterized in that, comprise: upper and lower at least two dual polarized antenna units putting of isolation cloth in the vertical direction, at least two dual polarized antenna units are all consistent with the inclination angle between the normal of ground, and described dual polarized antenna unit comprises the antenna element of multiple vertical arrangement; In described at least two dual polarized antenna units, the spacing d of the neighboring edge antenna element of adjacent bipolar antenna element is 0.5 λ ~ 1 λ, λ is antenna band support center frequency point wavelength.
2. mimo antennas device according to claim 1, is characterized in that, the pattern of described dual polarized antenna unit adopts+45 degree and-45 degree polarization modes.
3. mimo antennas device according to claim 1, is characterized in that, also comprises the antenna cover of unified for described at least two dual polarized antenna units encapsulation.
4. mimo antennas device according to claim 1, it is characterized in that, the number of the antenna element that described dual polarized antenna unit comprises is determined by antenna gain, and the total length of the mimo antennas device that described at least two dual polarized antenna units are formed is determined by the number of described antenna element.
5., according to the arbitrary described mimo antennas device of Claims 1 to 4, it is characterized in that, described dual-polarized antenna unit is two, is respectively the upper antenna element and lower antenna element of isolating up and down in the vertical direction.
6. mimo antennas device according to claim 5, is characterized in that, described upper antenna element and lower antenna element and different frequency range network antenna unit are encapsulated in same antenna outer cover side by side.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110221719.4A CN102916259B (en) | 2011-08-04 | 2011-08-04 | Multiple-input and multiple-output antenna |
| PCT/CN2012/079661 WO2013017102A1 (en) | 2011-08-04 | 2012-08-03 | A multiple input multiple output antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110221719.4A CN102916259B (en) | 2011-08-04 | 2011-08-04 | Multiple-input and multiple-output antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102916259A CN102916259A (en) | 2013-02-06 |
| CN102916259B true CN102916259B (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110221719.4A Active CN102916259B (en) | 2011-08-04 | 2011-08-04 | Multiple-input and multiple-output antenna |
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| Country | Link |
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| CN (1) | CN102916259B (en) |
| WO (1) | WO2013017102A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393422B (en) * | 2014-11-17 | 2018-05-01 | 京信通信***（中国）有限公司 | Multi-frequency array antenna |
| CN106848606B (en) * | 2016-12-29 | 2021-01-05 | 上海华为技术有限公司 | Antenna system |
| CN110121841A (en) * | 2017-01-25 | 2019-08-13 | 华为技术有限公司 | A kind of wave beam generation method and base station |
| CN107946780B (en) * | 2017-12-18 | 2024-05-28 | 普罗斯通信技术（苏州）有限公司 | Integrated base station antenna |
| WO2022139844A1 (en) | 2020-12-24 | 2022-06-30 | Intel Corporation | Radar apparatus, system, and method |
| CN117545072A (en) * | 2022-07-29 | 2024-02-09 | 华为技术有限公司 | Method and communication device for calculating uplink transmission power |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6211841B1 (en) * | 1999-12-28 | 2001-04-03 | Nortel Networks Limited | Multi-band cellular basestation antenna |
| CN101789548A (en) * | 2008-11-26 | 2010-07-28 | 日立电线株式会社 | Mobile communication base station antenna |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090322621A1 (en) * | 2008-06-30 | 2009-12-31 | Qualcomm Incorporated | Antenna array configurations for high throughput mimo wlan systems |
| CN101635391A (en) * | 2008-07-24 | 2010-01-27 | 中兴通讯股份有限公司 | Antenna array supporting MIMO and intelligent antenna technology |
| US7973718B2 (en) * | 2008-08-28 | 2011-07-05 | Hong Kong Applied Science And Technology Research Institute Co., Ltd. | Systems and methods employing coupling elements to increase antenna isolation |
| CN201877564U (en) * | 2010-07-31 | 2011-06-22 | 广东通宇通讯股份有限公司 | Multiple-input multiple-output antenna with adjustable space |
-
2011
- 2011-08-04 CN CN201110221719.4A patent/CN102916259B/en active Active
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2012
- 2012-08-03 WO PCT/CN2012/079661 patent/WO2013017102A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6211841B1 (en) * | 1999-12-28 | 2001-04-03 | Nortel Networks Limited | Multi-band cellular basestation antenna |
| CN101789548A (en) * | 2008-11-26 | 2010-07-28 | 日立电线株式会社 | Mobile communication base station antenna |
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| Publication number | Publication date |
|---|---|
| WO2013017102A1 (en) | 2013-02-07 |
| CN102916259A (en) | 2013-02-06 |
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