CN101635391A - Antenna array supporting MIMO and intelligent antenna technology - Google Patents
Antenna array supporting MIMO and intelligent antenna technology Download PDFInfo
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- CN101635391A CN101635391A CN200810129920A CN200810129920A CN101635391A CN 101635391 A CN101635391 A CN 101635391A CN 200810129920 A CN200810129920 A CN 200810129920A CN 200810129920 A CN200810129920 A CN 200810129920A CN 101635391 A CN101635391 A CN 101635391A
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Abstract
The invention discloses an antenna array supporting MIMO and intelligent antenna technology. The antenna array comprises two antenna array element groups with the same structure; the distance between the array element groups is more than or equal to twice of the signal wavelength, antenna array elements in the array element groups adopt a bipolarization mode for polarization, wherein the distance between the same polarized antenna array elements is about half of the signal wavelength; each radiofrequency signal coupling port of a correction coupling network is connected with a radiofrequency unit through a directional coupling unit to form a complete correction network, and the correction network is shown as a correction radiofrequency signal port at an antenna external interface; and when the overall wind resistance of the antenna is too large, an antenna cover can adopt the 'hollow' technology or the 'U' type encapsulation technology. The antenna array is simple in structure, can ensure the data signal quality of a communication system, and improves the data quantity throughput of the system at the same time.
Description
Technical field
The present invention relates to many array-element antenna device, relate in particular to the aerial array of a kind of support multiple-input and multiple-output (MIMO, Multiple Input Multiple Output) and intelligent antenna technology.
Background technology
Intelligent antenna technology has become in the mobile communication one of the most attractive technology.The smart antenna array antenna of challenging an opponent to a fight when two armies meet again, it adopts space division multiple access technique, utilizes the difference of signal in transmission direction, with same frequency or same time slot, come with the signal distinguishing of code channel, maximally utilises limited channel resource.Compare with non-directional antenna, the antenna gain of its uplink and downlink link improves greatly, has reduced transmitted power level, has improved signal to noise ratio, has overcome the influence of Channel Transmission decline effectively.Intelligent antenna technology utilizes the spatial character and the Digital Signal Processing of signal transmission, can realize up received signal high specific merging, the estimation of figuration weight vector and downlink signal beam figuration, thereby reach the purpose that reduces interference, increase capacity, expansion covering, improves communication quality, reduction transmitting power and raising wireless data transmission rate.
Existing intelligent antenna array mainly is divided into omnidirectional intelligent aerial array and directional intelligent antenna battle array.Advantages such as directional intelligent antenna is bigger because of its single array element gain, and business beam is more sharp-pointed, sector networking in easier minute and being applied even more extensively.In order to obtain better figuration effect, guarantee the correlation of signal between the bay simultaneously, the spacing between the bay generally is controlled at 1/2 and transmits about wavelength as far as possible.
And the MIMO technology is Long Term Evolution (LTE) and back key technology to system, by using independently space channel, improves the capacity of system most possibly.Because do not have correlation between each bay signal of MIMO specification requirement, therefore, the spacing between the bay should be big as much as possible, guarantees the independence of each bay signal.
The signal processing when core of MIMO technology is sky is just utilized a plurality of time-domains that distribute in the space and spatial domain to combine and is carried out signal processing.Therefore, the MIMO technology can be regarded as the expansion of smart antenna.Smart antenna also is known as adaptive antenna usually, is mainly used in to finish space filtering and location.From in essence, smart antenna using the relation of the position between each unit in the aerial array, promptly utilized the phase relation of signal, this is the essential distinction of it and traditional diversity technique.
Based on above analysis, relatively the similarities and differences of these two kinds of technology as can be seen, the major obstacle of MIMO and intelligent antenna technology coexistence is an antenna structure: smart antenna requires antenna distance to get 1/2 signal wavelength; And MIMO requirement antenna distance is several wavelength, and only is used for mimo system.And the MIMO technology is the direction of future communications system development, should consider the evolution issues of antenna system to this technology, and antenna belongs to the part of communication system, and antenna technology must be obeyed the direction of system evolved and development.The MIMO technology can increase the capacity of wireless communication system greatly, and effectively improves the performance of wireless communication system, is fit to very much in the future mobile communication system requirement to high-rate service.
Summary of the invention
In view of this, main purpose of the present invention is to provide the aerial array of a kind of MIMO of support and intelligent antenna technology, can support MIMO technology and intelligent antenna technology simultaneously, improves data transmission efficiency and power system capacity.
In order to realize the foregoing invention purpose, main technical schemes of the present invention is:
A kind of aerial array of supporting MIMO and intelligent antenna technology comprises two identical in structure antenna array tuples, and the distance between the two antenna array tuples is more than or equal to two times signal wavelength; Bay in the array element group adopts the dual polarization mode to polarize, and the distance between the wherein like-polarized bay is 1/3rd to three/binary signal wavelength.
Preferably, described bay dual polarization mode is specially: horizontal polarization mode, perpendicular polarization mode.
Preferably, described bay dual polarization mode is specially: positive 45 ° of polarization modes, negative 45 ° of polarization modes.
Preferably, the distance between the described like-polarized bay is 1/2nd signal wavelengths.
Preferably, also comprise and proofread and correct coupling network, radio frequency unit and directional couple unit, each radiofrequency signal coupling port of described correction coupling network is connected with radio frequency unit by the directional couple unit, form complete correcting network, described correcting network shows as one at the antenna external interface and proofreaies and correct the radiofrequency signal port.
Preferably, also comprise antenna cover, described antenna cover is engraved structure or is " ∪ " type structure.
The present invention carries out layout cleverly by the bay to aerial array, and bay is divided into two groups, makes distance between the two antenna array tuples greater than two times signal wavelength, like this, can use array element in the two antenna array tuples to realize the transmitting-receiving of MIMO data; Simultaneously, each bay in each antenna array tuple adopts different polarization modes, distance between the like-polarized bay remains on about 1/2nd signal wavelengths, when realizing data transmit-receive, still adopt the wave beam forming technology between the like-polarized bay, guarantee the high gain characteristics of each bay data-signal.The present invention is simple in structure, can guarantee the data signal quality of communication system, has improved the data volume throughput of system simultaneously again.
Description of drawings
Fig. 1 is that the structure of 4 array-element antenna arrays of the embodiment of the invention is formed schematic diagram;
Fig. 2 is that the structure of 8 array-element antenna arrays of the embodiment of the invention is formed schematic diagram;
Fig. 3 is the concrete application schematic diagram of the aerial array of the embodiment of the invention.
Embodiment
Describe the present invention below in conjunction with accompanying drawing.
Fig. 1 is that the structure of 4 array-element antenna arrays of the embodiment of the invention is formed schematic diagram, and as shown in Figure 1,4 array-element antenna arrays of the embodiment of the invention comprise 4 bays, are divided into 2 antenna array tuples, the separation delta d between two antenna array tuples
1＞2 λ, this mainly is to consider due to the MIMO technology, owing to do not have correlation between each bay signal of MIMO specification requirement, therefore, must guarantee the distance between the 2 antenna array tuples, could guarantee that 2 antenna array tuples send or receive when signal transmitting and receiving wireless signal can interference, thereby not have any correlation.For 2 bays in the antenna array tuple, they must be that polarization mode is different, for the separation delta d between the like-polarized bay
2≈ 0.5 λ, this is in order to satisfy the requirement of intelligent antenna technology for bay strong correlation in the aerial array, to have identical phase place and amplitude to guarantee the signal that like-polarized bay is launched, thereby realizes the wave beam forming of signal emission.The scope of the spacing between the like-polarized bay need be decided according to concrete aerial array situation 1/3rd between three/binary signal wavelength, and the bay spacing is excessive, can reduce the degree of correlation between the signal; The bay spacing is too small, will cause unnecessary lobe at directional diagram, and therefore, bay half-wavelength spacing is normally preferred, can finely tune to some extent according to concrete Test Application.
Among Fig. 1, adopt positive 45 ° of polarization modes, negative 45 ° of polarization modes between 2 bays in the every day linear array tuple respectively, also can adopt horizontal polarization mode, perpendicular polarization mode to realize.Wherein, positive and negative 45 ° of polarization modes can effectively reduce the size of aerial array, and this is beneficial to the cost savings of antenna, the convenient installation.Bay is the space radiation electromagnetic wave towards periphery, and electromagnetic wave is made of electric field and magnetic field, and wherein, the direction of electric field is exactly the antenna polarization direction.
Below introduce the course of work of the aerial array of the embodiment of the invention.
For the user data in the time slot, be broken down into the data flow of the number of antenna array tuple, each data flow all sends by an antenna array tuple.According to the bay number in each antenna array tuple data flow is decomposed once more again, data flow for each bay, by the adjustment of directional coupler to amplitude of transmitting and phase place, thus realize transmitting relevant, form the effect of wave beam forming.Thereby make aerial array of the present invention support MIMO technology and intelligent antenna technology simultaneously.
Fig. 2 is that the structure of 8 array-element antenna arrays of the embodiment of the invention is formed schematic diagram, as shown in Figure 2,8 array-element antenna arrays of the embodiment of the invention comprise 8 bays, it realizes that principle and aerial array shown in Figure 1 are identical, different is, the embodiment of the invention realizes by 8 bays, bay number in each antenna array tuple has become 4, such structure can improve the throughput of data, but needed data processing amount is also bigger, need the processor of high handling property to support its operation principle, the polarization modes of bay etc. are identical with aerial array shown in Figure 1.Need to prove, in the aerial array shown in Figure 2, bay number in each antenna array tuple is 4,2 bay polarization modes wherein can be different with other polarization mode of 2 bays, for example wherein 2 adopt positive and negative 45 ° of polarization modes, in addition 2 can the employing level, the perpendicular polarization mode realizes.Certainly, for 2 antenna array tuples of aerial array, their structure is identical forever.
Need to prove that the bay number in Fig. 1, the antenna array structure shown in Figure 2 is not limited, when antenna array unit number more for a long time, the computing capability of required aerial signal processor is enough powerful to get final product.
Fig. 3 is the concrete application schematic diagram of the aerial array of the embodiment of the invention, as shown in Figure 3, the aerial array of the embodiment of the invention can be applicable in the base station of communication system, there is shown the geometry schematic diagram of 3 sectors, according to this arrangement mode, three aerial arrays according to Fig. 1, the described structural design of Fig. 2 are applied in the base station, form the covering of three sectors and get final product.Because the structure of aerial array describes in detail in preamble, repeats no more here.
For reducing windage, the aerial array outer cover of the embodiment of the invention is adopted as fretwork technology or " ∪ " type encapsulation technology.
Need to prove that along with the continuous development of technology, the structure of Fig. 1, the described aerial array of Fig. 2 also can be applicable in the user terminal.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (6)
1, a kind of aerial array of supporting MIMO and intelligent antenna technology is characterized in that, comprises two identical in structure antenna array tuples, and the distance between the two antenna array tuples is more than or equal to two times signal wavelength; Bay in the array element group adopts the dual polarization mode to polarize, and the distance between the wherein like-polarized bay is 1/3rd to three/binary signal wavelength.
2, aerial array according to claim 1 is characterized in that, described bay dual polarization mode is specially: horizontal polarization mode, perpendicular polarization mode.
3, aerial array according to claim 1 is characterized in that, described bay dual polarization mode is specially: positive 45 ° of polarization modes, negative 45 ° of polarization modes.
4, aerial array according to claim 1 is characterized in that, the distance between the described like-polarized bay is 1/2nd signal wavelengths.
5, aerial array according to claim 1, it is characterized in that, also comprise and proofread and correct coupling network, radio frequency unit and directional couple unit, each radiofrequency signal coupling port of described correction coupling network is connected with radio frequency unit by the directional couple unit, form complete correcting network, described correcting network shows as one at the antenna external interface and proofreaies and correct the radiofrequency signal port.
6, aerial array according to claim 1 is characterized in that, also comprises antenna cover, and described antenna cover is engraved structure or is " ∪ " type structure.
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| CN200810129920A CN101635391A (en) | 2008-07-24 | 2008-07-24 | Antenna array supporting MIMO and intelligent antenna technology |
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| CN102308438A (en) * | 2011-05-16 | 2012-01-04 | 华为技术有限公司 | Array antenna and method for controlling beam width of array antenna |
| CN102655261A (en) * | 2011-03-02 | 2012-09-05 | 华为技术有限公司 | Antenna system and wireless communication system |
| CN102780522A (en) * | 2011-05-12 | 2012-11-14 | 中国移动通信集团设计院有限公司 | Antenna array as well as communication system and communication method based on antenna array |
| CN102800996A (en) * | 2012-08-03 | 2012-11-28 | 武汉虹信通信技术有限责任公司 | MIMO (Multiple Input Multiple Output) array antenna of multi-polarization manner |
| CN102916260A (en) * | 2011-08-04 | 2013-02-06 | 中国电信股份有限公司 | Antenna and base station |
| WO2013017102A1 (en) * | 2011-08-04 | 2013-02-07 | 中国电信股份有限公司 | A multiple input multiple output antenna device |
| CN103700952A (en) * | 2012-09-28 | 2014-04-02 | 中国电信股份有限公司 | Array antenna and base station |
| WO2014047858A1 (en) * | 2012-09-28 | 2014-04-03 | 中国电信股份有限公司 | Array antenna and base station |
| CN104143692A (en) * | 2013-05-10 | 2014-11-12 | 中国电信股份有限公司 | Multi-antenna array and base station |
| CN106207493A (en) * | 2016-06-29 | 2016-12-07 | 赵瑞华 | Mimo antenna array |
| WO2017063132A1 (en) * | 2015-10-13 | 2017-04-20 | 华为技术有限公司 | Multi-sector mimo active antenna system and communication device |
| CN106911365A (en) * | 2015-12-21 | 2017-06-30 | 中国移动通信集团公司 | A kind of method and device of polarized antenna arrays channel correcting |
| WO2018094660A1 (en) * | 2016-11-24 | 2018-05-31 | 深圳市大疆创新科技有限公司 | Antenna assembly and unmanned aerial vehicle |
| CN110048242A (en) * | 2019-04-26 | 2019-07-23 | 嘉兴思睿通信科技有限公司 | A kind of multi-antenna technology improving 5G network reliability |
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| CN102655261A (en) * | 2011-03-02 | 2012-09-05 | 华为技术有限公司 | Antenna system and wireless communication system |
| CN102780522A (en) * | 2011-05-12 | 2012-11-14 | 中国移动通信集团设计院有限公司 | Antenna array as well as communication system and communication method based on antenna array |
| CN102780522B (en) * | 2011-05-12 | 2015-11-04 | 中国移动通信集团设计院有限公司 | A kind of aerial array, based on the communication system of this aerial array and communication means |
| CN102308438A (en) * | 2011-05-16 | 2012-01-04 | 华为技术有限公司 | Array antenna and method for controlling beam width of array antenna |
| CN102308438B (en) * | 2011-05-16 | 2014-09-03 | 华为技术有限公司 | Array antenna and method for controlling beam width of array antenna |
| CN102916260B (en) * | 2011-08-04 | 2015-05-13 | 中国电信股份有限公司 | Antenna and base station |
| CN102916260A (en) * | 2011-08-04 | 2013-02-06 | 中国电信股份有限公司 | Antenna and base station |
| WO2013017102A1 (en) * | 2011-08-04 | 2013-02-07 | 中国电信股份有限公司 | A multiple input multiple output antenna device |
| CN102800996A (en) * | 2012-08-03 | 2012-11-28 | 武汉虹信通信技术有限责任公司 | MIMO (Multiple Input Multiple Output) array antenna of multi-polarization manner |
| CN102800996B (en) * | 2012-08-03 | 2015-09-02 | 武汉虹信通信技术有限责任公司 | A kind of MIMO array antenna of multipolarization mode |
| CN103700952A (en) * | 2012-09-28 | 2014-04-02 | 中国电信股份有限公司 | Array antenna and base station |
| WO2014047858A1 (en) * | 2012-09-28 | 2014-04-03 | 中国电信股份有限公司 | Array antenna and base station |
| CN103700952B (en) * | 2012-09-28 | 2016-08-31 | 中国电信股份有限公司 | Array antenna and base station |
| US9653817B2 (en) | 2012-09-28 | 2017-05-16 | China Telecom Corporation Limited | Array antenna and base station |
| CN104143692A (en) * | 2013-05-10 | 2014-11-12 | 中国电信股份有限公司 | Multi-antenna array and base station |
| KR102016000B1 (en) * | 2015-10-13 | 2019-08-29 | 후아웨이 테크놀러지 컴퍼니 리미티드 | Multi-sector MIMO Active Antenna System and Communication Device |
| WO2017063132A1 (en) * | 2015-10-13 | 2017-04-20 | 华为技术有限公司 | Multi-sector mimo active antenna system and communication device |
| CN107078399A (en) * | 2015-10-13 | 2017-08-18 | 华为技术有限公司 | Many sector MIMO active antenna systems and communication equipment |
| KR20180056781A (en) * | 2015-10-13 | 2018-05-29 | 후아웨이 테크놀러지 컴퍼니 리미티드 | Multi-sector MIMO active antenna system and communication device |
| JP2018536337A (en) * | 2015-10-13 | 2018-12-06 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Multi-sector MIMO active antenna system and communication device |
| CN106911365A (en) * | 2015-12-21 | 2017-06-30 | 中国移动通信集团公司 | A kind of method and device of polarized antenna arrays channel correcting |
| CN106911365B (en) * | 2015-12-21 | 2020-08-28 | 中国移动通信集团公司 | Method and device for correcting polarized antenna array channel |
| CN106207493A (en) * | 2016-06-29 | 2016-12-07 | 赵瑞华 | Mimo antenna array |
| CN106207493B (en) * | 2016-06-29 | 2019-10-29 | 赵瑞华 | Mimo antenna array |
| WO2018094660A1 (en) * | 2016-11-24 | 2018-05-31 | 深圳市大疆创新科技有限公司 | Antenna assembly and unmanned aerial vehicle |
| CN110048242A (en) * | 2019-04-26 | 2019-07-23 | 嘉兴思睿通信科技有限公司 | A kind of multi-antenna technology improving 5G network reliability |
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Application publication date: 20100127 |