CN103531880A - Antenna device for multi-input multi-output system - Google Patents
Antenna device for multi-input multi-output system Download PDFInfo
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- CN103531880A CN103531880A CN201210231634.9A CN201210231634A CN103531880A CN 103531880 A CN103531880 A CN 103531880A CN 201210231634 A CN201210231634 A CN 201210231634A CN 103531880 A CN103531880 A CN 103531880A
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Abstract
The invention discloses an antenna device for a multi-input multi-output system. The device comprises a first substrate and a second substrate, dual-polarized antennas and ports, wherein an included angle is formed between the plane of the first substrate and the plane of the second substrate, each of the substrates is provided with two columns of dual-polarized antennas, each column of dual-polarized antennas is composed of a positively-polarized antenna and a negatively-polarized antenna, and the ports are used for transmitting a signal to the dual-polarized antennas. The multiple antenna substrates of the antenna device are symmetrical about a folding line. The antenna device is compatible with a three-sector mode and a six-sector mode. When the system is upgraded to a six-sector mode, the antenna device of the system does not need to be replaced so that the network upgrade investment of operators can be effectively reduced.
Description
Technical field
The present invention relates to antenna assembly, particularly a kind of antenna assembly for mimo systems.
Background technology
In the 4G communication technology, Multiple Input Multiple Output (Multiple-Input Multiple-Out-put, MIMO) can fully be suitable for separate space propagation path, can effectively promote network service speed and link performance, become one of core technology of most critical in Long Term Evolution (Long Term Evolution, LTE) and following 4G technology.
For LTE system, distinct issues are that the needed frequency bandwidth of system is larger.For example, the frequency bandwidth of LTE Frequency Division Duplexing (FDD) (Frequency Division Duplexing, FDD) system General Requirements 10MHZ or 20MHZ.
For above-mentioned large bandwidth system, operator is difficult to application to a plurality of frequency resources.An existing solution adopts sector cracking method exactly, to make full use of acquired frequency resource.For example, original three sector base stations can be split into six sector base stations.Adopt in this way, the power system capacity after lifting can reach 1.2 times～1.7 times of original system capacity.
Applicant, to adopt the LTE system of sector cracking technology and MIMO technology to conduct in-depth analysis simultaneously, finds that the improvement cost of system is larger.
Specifically, for the LTE system that adopts MIMO technology, set number of antennas is originally more; Adopt sector cracking technology (for example, three sector base stations being split into six sector base stations), improved antenna amount will reach the twice of original antenna amount again.This can bring larger burden to construction and the transformation of antenna-feedback system.
Summary of the invention
The present inventor finds to have problems in above-mentioned prior art, and therefore at least one problem in described problem, has proposed a kind of new technical scheme.
An object of the present invention is to provide a kind of antenna assembly for mimo systems.Utilize this antenna assembly, for the LTE system that adopts MIMO technology and sector cracking technology, can effectively reduce the improvement cost of antenna-feedback system.
According to a first aspect of the invention, provide a kind of antenna assembly for mimo systems.This device comprises first substrate and second substrate, and first substrate and second substrate place plane form angle; Dual polarized antenna, first substrate and second substrate are equipped with two row dual polarized antennas, and every row dual polarized antenna consists of a positive polarization antenna and a negative polarization antenna; And to a plurality of ports of dual polarized antenna signal transmission.Wherein, by adjusting the annexation of the plurality of port, this antenna assembly has six sector mode of operations and three sector mode of operations.
Preferably, first substrate and the second substrate place formed angle of plane are 120 °.
Preferably, the dual polarized antenna on first substrate and the dual polarized antenna on second substrate distribute along the plane symmetry of dividing angle equally.
Preferably, the spacing that is positioned at two row dual polarized antennas in same substrate is (0.7 ~ 1) λ, and wherein, λ is the center frequency point wavelength of dual polarized antenna frequency range used.
Preferably, on identical substrate, two positive polarization antennas produce 33 degree horizontal width wave beams of positive polarization direction; Two negative polarization antennas produce 33 degree horizontal width wave beams of negative polarization direction; And the overlay area of 33 degree horizontal width wave beams of 33 degree horizontal width wave beams of positive polarization direction and negative polarization direction is identical.
Preferably, first substrate is provided with the first port and the second port, second substrate is provided with the 3rd port and the 4th port, wherein, the first port is to two positive polarization antenna transmission signals on first substrate, the second port is to two negative polarization antenna transmission signals on first substrate, and the 3rd port is to two positive polarization antenna transmission signals on second substrate, and the 4th port is to two negative polarization antenna transmission signals on second substrate.
Alternatively, in six sector mode of operations, the first port is for receiving and dispatching the positive polarization signal of the first sector of six sector cells; The second port is for receiving and dispatching the negative polarization signal of the first sector; The 3rd port is for receiving and dispatching the positive polarization signal of the second sector of six sector cells; The 4th port is for receiving and dispatching the negative polarization signal of the second sector; And the first sector is adjacent with the second sector.
Alternatively, in three sector mode of operations, the first port and the 3rd port connect and compose five-port, the second port and the 4th port connect and compose the 6th port, so that whole positive polarization antennas of antenna assembly produce 65 degree horizontal width wave beams of positive polarization direction, whole negative polarization antennas of antenna assembly produce 65 degree horizontal width wave beams of negative polarization direction, and the overlay area of 65 degree horizontal width wave beams of 65 degree horizontal width wave beams of this positive polarization direction and this negative polarization direction is identical.
Preferably, five-port is for receiving and dispatching the positive polarization signal of a sector of three sector cells; The 6th port is for receiving and dispatching the negative polarization signal of this sector.
An advantage of the present invention is, compatible three sectors of this antenna assembly and two kinds of six sectors pattern.Situation for system upgrade to six sectors, needn't change the antenna equipment of system, effectively reduces the network upgrade investment of operator.
By the detailed description to exemplary embodiment of the present invention referring to accompanying drawing, it is clear that further feature of the present invention and advantage thereof will become.
Accompanying drawing explanation
The accompanying drawing that forms a part for specification has been described embodiments of the invention, and together with the description for explaining principle of the present invention.
With reference to accompanying drawing, according to detailed description below, can more be expressly understood the present invention, wherein:
Fig. 1 is the diagram illustrating according to the antenna assembly for mimo systems of the present invention embodiment.
Fig. 2 is the vertical view of antenna assembly in Fig. 1.
Fig. 3 illustrates the beam pattern that the antenna assembly in six sector mode of operations produces.
Fig. 4 is the schematic diagram of six sector cells.
Fig. 5 illustrates the beam pattern that the antenna assembly in three sector mode of operations produces.
Fig. 6 is the schematic diagram of three sector cells.
Embodiment
Now with reference to accompanying drawing, describe various exemplary embodiment of the present invention in detail.It should be noted that: unless illustrate in addition, the parts of setting forth in these embodiments and positioned opposite, numeral expression formula and the numerical value of step do not limit the scope of the invention.
, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not to draw according to actual proportionate relationship meanwhile.
To the description only actually of at least one exemplary embodiment, be illustrative below, never as any restriction to the present invention and application or use.
For the known technology of person of ordinary skill in the relevant, method and apparatus, may not discuss in detail, but in suitable situation, described technology, method and apparatus should be regarded as authorizing a part for specification.
In all examples with discussing shown here, it is exemplary that any occurrence should be construed as merely, rather than as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: in similar label and letter accompanying drawing below, represent similar terms, therefore, once be defined in an a certain Xiang Yi accompanying drawing, in accompanying drawing subsequently, do not need it to be further discussed.
Fig. 1 shows according to the structural representation of the antenna assembly for mimo systems of the present invention embodiment.
This antenna assembly can be provided with substrate 11 and substrate 12.Substrate 11 and substrate 12 place planes can form the angle of certain angle.Like this, overlook this antenna assembly from above, two substrates forms broken line structure.
And traditional antenna device adopts Patcho antenna, i.e. the maximum gain direction in all antenna a period of time of antenna inside directional antenna normal direction all.
Therefore, the antenna of the application's broken line structure is different from existing Patcho antenna structure.
Preferably, plane formed angle in two substrates place can be 120 degree.
On substrate 11, can be provided with dual polarized antenna 13 and dual polarized antenna 14; On substrate 12, can be provided with dual polarized antenna 15 and dual polarized antenna 16.Every row dual polarized antenna can consist of a positive polarization antenna and a negative polarization antenna.
Every positive polarization antenna can comprise 4 ~ 10 positive polarization antenna a period of time, and every negative polarization antenna can comprise 4 ~ 10 negative polarization antenna a period of time.The number that it will be understood by those of skill in the art that concrete antenna a period of time can require specifically to set for antenna gain according to network, at this, does not limit.In the present embodiment, the positive polarization antenna in dual polarized antenna 13 consisted of 4 positive polarization antenna a period of time 131, and negative polarization antenna consisted of 4 negative polarization antenna a period of time 132.
Dual polarized antenna 13, dual polarized antenna 14, dual polarized antenna 15 and dual polarized antenna 16 can distribute along the plane symmetry of dividing the angle of substrate 11 and substrate 12 equally.
Gap between the antenna of the equipolarization direction on preferably, can same substrate is set to 0.7 times ~ 1 times of center frequency point wavelength of antenna frequency range used.By this set, can form 33 degree horizontal width wave beams.Wherein, two positive polarization antennas on substrate 11 will form 33 degree horizontal width wave beams of a positive polarization direction jointly; Two negative polarization antennas on substrate 11 will form 33 degree horizontal width wave beams of a negative polarization direction jointly.And the azimuth of the 33 degree horizontal width wave beams that these two polarised directions are contrary is consistent, and the region covering is identical.
Similarly, the antenna on substrate 12 also can form two 33 degree horizontal width wave beams that polarised direction is contrary, and overlay area is identical.
It will be understood by those of skill in the art that can be according to specific needs, adjusts flexibly set antenna system, number of antennas and antenna distance in the angle, substrate of two substrates.For example, can adjust the spacing of the antenna of two equipolarization directions on same substrate, thereby form the horizontal beam of other width, and be not limited to 33 degree horizontal width wave beams.
This antenna assembly also can comprise for the port to antenna transmission signal.Wherein, port one 7 can be connected with two positive polarization antennas on substrate 11; Port one 8 can be connected with two negative polarization antennas on substrate 11; Port one 9 can be connected with two positive polarization antennas on substrate 12; Port 20 can be connected with two negative polarization antennas on substrate.
Below in conjunction with Fig. 2, the angle of two substrates is set and described.Fig. 2 is the vertical view of antenna assembly in Fig. 1.
By the angle of two substrates is set, can adjust the angle of formed two wave beams of antenna of two substrates.
In the present embodiment, as shown in Figure 2, arrow 21 represents the greatest irradiation direction of the formed 33 degree horizontal width wave beams of the dual polarized antenna of substrate 11; Arrow 22 represents the greatest irradiation direction of the formed 33 degree horizontal width wave beams of the dual polarized antenna of substrate 12.
Because substrate 11 and the formed angle of substrate 12 are 120 degree, the greatest irradiation direction of two wave beams can form the angle of 60 degree.
This symmetrical broken line structure will make needed six sector beams can be perpendicular to antenna substrate surface, beam direction is antenna plane normal direction, more be conducive to improve 33 degree horizontal width beam qualities, suppress beam side lobe, improve the gain of antenna main lobe direction.
Below in conjunction with Fig. 1, Fig. 3 and Fig. 4, six sector mode of operations of this antenna assembly are described.Fig. 3 is the beam pattern that the antenna assembly in six sector mode of operations produces.Fig. 4 is the subregion schematic diagram of six sector cells.
In six sector mode of operations, port one 7 can be connected with the positive polarization MIMO signal of sector A, for receiving and dispatching the positive polarization signal of sector A.Port one 8 can be connected with the negative polarization MIMO signal of sector A, for receiving and dispatching the negative polarization signal of sector B.Similarly, port one 9 can be connected with the positive polarization MIMO signal of sector B; Port 20 can be connected with the negative polarization MIMO signal of sector B.
As shown in Figure 3, two positive polarization antennas on substrate 11 can produce positive polarization wave beam, and two negative polarization antennas on substrate 11 can produce negative polarization wave beam.Two wave beams include wave beam main lobe 301, beam side lobe 302 and beam side lobe 303.This positive polarization wave beam is identical with the azimuth of negative polarization wave beam, and overlay area is identical.That is, the sector A shown in equal coverage diagram 4.
Similarly, the antenna of substrate 12 also can form two wave beams that polarised direction is contrary, and this wave beam also comprises wave beam main lobe 311, beam side lobe 312 and beam side lobe 313.Two wave beams are all for the sector B shown in coverage diagram 4.
Angle between the formed wave beam of antenna on two substrates is 60 degree, meets in six sector overlay networks the requirement with antenna pattern.
The formed wave beam of antenna on substrate 11 can with substrate 12 on the formed wave-packet portion of antenna overlapping.When mobile terminal moves in this overlapping region, can there is sector switch.
Because the same polarised direction of two antennas on each substrate has been carried out synthetic figuration, after two equipolarization antenna figurations, will be used as an antenna.Therefore, the whole antennas on each substrate can be supported 2 * 2MIMO mode of operation.
Below in conjunction with Fig. 1, Fig. 5 and Fig. 6, three sector mode of operations of antenna assembly of the present invention are described.Fig. 5 illustrates the beam pattern that the antenna assembly in three sector mode of operations produces.Fig. 6 is the schematic diagram of three sector cells.
In three sector mode of operations, port one 7 can be merged and is connected with port one 9, port one 8 is merged and is connected with port 20.Like this, 4 antenna ports are transformed into 2 antenna ports, and the antenna port after these 2 transformations is for receiving and dispatching positive polarization signal and the negative polarization signal of three same sectors, sector cell.
As shown in Figure 5, due to port is combined, and the port after merging is for receiving and dispatching the signal of same sector, and therefore, two 33 degree horizontal width wave beams can superpose and form one 65 degree horizontal width wave beam 501.This 65 degree horizontal width wave beam 501 is for the sector C shown in coverage diagram 6.
When move the antenna formed wave beam overlapping area of mobile terminal on two substrates, will can there is not the switching of sector.
Antenna assembly under this mode of operation is also supported 2 * 2 MIMO mode of operation.
Adopt above-mentioned disclosed antenna assembly, by adopting broken line symmetrical structure, can, in the situation that keeping antenna hardware constant, support three sector configuration and six sector configuration of LTE mimo system.
Situation for system upgrade to six sectors, network needn't be changed antenna equipment, can effectively reduce the network upgrade investment of operator, facilitates the dilatation of LTE network.
In addition, adopt the antenna assembly of the disclosure, owing to can avoiding needing to increase the installation processes such as antenna and associated supports in six sector dilatations, therefore can effectively reduce the difficulty that operator and property are coordinated.
So far, described in detail according to the antenna assembly for mimo systems of the present invention.For fear of covering design of the present invention, details more known in the field are not described.Those skilled in the art, according to description above, can understand how to implement technical scheme disclosed herein completely.
Although specific embodiments more of the present invention are had been described in detail by example, it should be appreciated by those skilled in the art, above example is only in order to describe, rather than in order to limit the scope of the invention.It should be appreciated by those skilled in the art, can without departing from the scope and spirit of the present invention, above embodiment be modified.Scope of the present invention is limited by claims.
Claims (9)
1. for an antenna assembly for mimo systems, it is characterized in that, this device comprises:
First substrate and second substrate, described first substrate and described second substrate place plane form angle;
Dual polarized antenna, described first substrate and described second substrate are equipped with two row dual polarized antennas, and the described dual polarized antenna of every row consists of a positive polarization antenna and a negative polarization antenna; And
To a plurality of ports of described dual polarized antenna signal transmission, wherein, by adjusting the annexation of described a plurality of ports, described antenna assembly has six sector mode of operations and three sector mode of operations.
2. device as claimed in claim 1, is characterized in that,
Described first substrate and the formed angle of described second substrate place plane are 120 °.
3. device as claimed in claim 2, is characterized in that,
Dual polarized antenna on dual polarized antenna on described first substrate and described second substrate distributes along the plane symmetry of dividing described angle equally.
4. device as claimed in claim 3, is characterized in that, the spacing that is positioned at the described two row dual polarized antennas in same substrate is (0.7 ~ 1) λ, and wherein λ is the center frequency point wavelength of described dual polarized antenna frequency range used.
5. device as claimed in claim 4, is characterized in that,
On identical substrate, two described positive polarization antennas produce 33 degree horizontal width wave beams of positive polarization direction;
Two described negative polarization antennas produce 33 degree horizontal width wave beams of negative polarization direction; And the overlay area of 33 degree horizontal width wave beams of 33 degree horizontal width wave beams of described positive polarization direction and described negative polarization direction is identical.
6. device as claimed in claim 4, is characterized in that, described first substrate is provided with the first port and the second port, and described second substrate is provided with the 3rd port and the 4th port, wherein,
Described the first port is to two positive polarization antenna transmission signals on described first substrate, described the second port is to two negative polarization antenna transmission signals on described first substrate, described the 3rd port is to two positive polarization antenna transmission signals on described second substrate, and described the 4th port is to two negative polarization antenna transmission signals on described second substrate.
7. device as claimed in claim 6, is characterized in that, in six sector mode of operations,
Described the first port is for receiving and dispatching the positive polarization signal of the first sector of six sector cells;
Described the second port is for receiving and dispatching the negative polarization signal of described the first sector;
Described the 3rd port is for receiving and dispatching the positive polarization signal of the second sector of described six sector cells;
Described the 4th port is for receiving and dispatching the negative polarization signal of described the second sector; And,
Described the first sector is adjacent with described the second sector.
8. device as claimed in claim 6, is characterized in that, in three sector mode of operations,
Described the first port and described the 3rd port connect and compose five-port, described the second port and described the 4th port connect and compose the 6th port, so that whole positive polarization antennas of described device produce 65 degree horizontal width wave beams of positive polarization direction, whole negative polarization antennas of described device produce 65 degree horizontal width wave beams of negative polarization direction, and the overlay area of 65 degree horizontal width wave beams of 65 degree horizontal width wave beams of described positive polarization direction and described negative polarization direction is identical.
9. device as claimed in claim 8, is characterized in that,
Described five-port is for receiving and dispatching the positive polarization signal of a sector of three sector cells;
Described the 6th port is for receiving and dispatching the negative polarization signal of this sector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210231634.9A CN103531880B (en) | 2012-07-05 | 2012-07-05 | For the antenna installation of mimo systems |
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| CN201210231634.9A CN103531880B (en) | 2012-07-05 | 2012-07-05 | For the antenna installation of mimo systems |
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| CN105375098A (en) * | 2014-08-18 | 2016-03-02 | 智邦科技股份有限公司 | Antenna apparatus and the mimo communication device using the same |
| CN105811105A (en) * | 2014-12-29 | 2016-07-27 | 中国电信股份有限公司 | Active array antenna, base station and transmission system |
| CN106549231A (en) * | 2015-09-22 | 2017-03-29 | 启碁科技股份有限公司 | Combined antenna |
| CN108023626A (en) * | 2016-11-02 | 2018-05-11 | 中兴通讯股份有限公司 | A kind of array antenna combination, the method and device of beam switchover |
| CN109541551A (en) * | 2018-12-21 | 2019-03-29 | 深圳迈睿智能科技有限公司 | Multi-beam is the same as frequency microwave sounding antenna and its manufacturing method and detection method |
| CN110391505A (en) * | 2019-07-22 | 2019-10-29 | 中国电子科技集团公司第三十八研究所 | A kind of omnidirectional's scanning end-fire array antenna of horizontal beam |
| CN113823891A (en) * | 2021-09-28 | 2021-12-21 | 深圳市道通智能汽车有限公司 | Antenna module, millimeter wave radar and vehicle |
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| CN113823891A (en) * | 2021-09-28 | 2021-12-21 | 深圳市道通智能汽车有限公司 | Antenna module, millimeter wave radar and vehicle |
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