CN103531880B - For the antenna installation of mimo systems - Google Patents
For the antenna installation of mimo systems Download PDFInfo
- Publication number
- CN103531880B CN103531880B CN201210231634.9A CN201210231634A CN103531880B CN 103531880 B CN103531880 B CN 103531880B CN 201210231634 A CN201210231634 A CN 201210231634A CN 103531880 B CN103531880 B CN 103531880B
- Authority
- CN
- China
- Prior art keywords
- substrate
- port
- antenna
- sector
- polarization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention discloses a kind of antenna installation for mimo systems. This device comprises: first substrate and second substrate, and first substrate and second substrate place plane form angle; Dual polarization antenna, first substrate and second substrate are equipped with two row dual polarization antennas, and often row dual polarization antenna is made up of a positive polarization antenna and a negative polarization antenna; And the port to dual polarization antenna transmission signal. Many groups antenna substrate of the present invention is broken line symmetrical structure. Connect by adjusting the signal of port, compatible three sectors of this antenna installation and two kinds, six sectors pattern. For system upgrade to six sectors in the case of, it is not necessary to change the antenna equipment of system, it is possible to effectively reduce the network upgrading investment of operator.
Description
Technical field
The present invention relates to antenna installation, in particular to a kind of antenna installation for mimo systems.
Background technology
In the 4G communication technology, Multiple Input Multiple Output (Multiple-InputMultiple-Out-put, MIMO) separate space travel path can be fully suitable for, can effectively promote network service rate and link performance, become one of core technology of most critical in Long Term Evolution (LongTermEvolution, LTE) and following 4G technology.
For LTE system, an outstanding problem be system required for frequency bandwidth bigger. Such as, the frequency bandwidth of LTE FDD (FrequencyDivisionDuplexing, FDD) system general requirement 10MHZ or 20MHZ.
For above-mentioned large bandwidth system, operator is difficult to application to multiple frequency resource. An existing terms of settlement adopts sector cracking method exactly, to make full use of the frequency resource obtained. Such as, original three sector base stations can be split into six sector base stations. Adopting in this way, the system capacity after lifting can reach 1.2 times��1.7 times of original system capacity.
The LTE system simultaneously adopting sector cracking technology and MIMO technology is conducted in-depth analysis by applicant, it has been found that the improvement cost of system is bigger.
Specifically, for the LTE system adopting MIMO technology, set number of antennas is originally more; Adopting sector cracking technology (such as, three sector base stations are split into six sector base stations) again, improved antenna amount will reach the twice of original antenna amount. This can bring bigger 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 proposes a kind of new technical scheme at least one problem in described problem.
It is an object of the present invention to provide a kind of antenna installation for mimo systems. Utilize this antenna installation, for the LTE system adopting MIMO technology and sector cracking technology, it is possible to effectively reduce the improvement cost of antenna-feedback system.
According to the first aspect of the invention, it provides a kind of antenna installation for mimo systems. This device comprises first substrate and second substrate, and first substrate and second substrate place plane form angle; Dual polarization antenna, first substrate and second substrate are equipped with two row dual polarization antennas, and often row dual polarization antenna is made up of a positive polarization antenna and a negative polarization antenna; And the multiple ports to dual polarization antenna transmission signal. Wherein, by adjusting the connection relation of the plurality of port, this antenna installation has six sector operating mode and three sector operating mode.
Preferably, the angle that first substrate and second substrate place plane are formed is 120 ��.
Preferably, the dual polarization antenna on first substrate and the dual polarization antenna on second substrate are along the plane symmetry distribution dividing angle equally.
Preferably, the spacing of the two row dual polarization antennas being positioned in same substrate is (0.7 ~ 1) ��, and wherein, �� is the center frequency point wavelength of dual polarization antenna frequency range used.
Preferably, on the same substrate, 33 degree of horizontal clearance wave beams in two positive polarization antenna generation positive polarization directions; Two negative polarization antennas produce 33 degree of horizontal clearance wave beams in negative polarization direction; Further, 33 degree of horizontal clearance wave beams in positive polarization direction are identical with the covering region of 33 degree of horizontal clearance wave beams in negative polarization direction.
Preferably, first substrate is provided with the first port and Two-port netwerk, second substrate is provided with the 3rd port and the 4th port, wherein, first port is to two positive polarization antenna transmission signals on first substrate, Two-port netwerk 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.
Can selection of land, in six sector operating mode, the positive polarization signal of first sector of the first port for receiving and dispatching in six sector cells; Two-port netwerk is for receiving and dispatching the negative polarization signal of the first sector; The positive polarization signal of two sector of 3rd port for receiving and dispatching in six sector cells; 4th port is for receiving and dispatching the negative polarization signal of the 2nd sector; Further, the first sector is adjacent with the 2nd sector.
Can selection of land, in three sector operating mode, first port and the 3rd port connect and compose five-port, Two-port netwerk and the 4th port connect and compose the 6th port, so that whole positive polarization antenna of antenna installation produces 65 degree of horizontal clearance wave beams in positive polarization direction, whole negative polarization antenna of antenna installation produces 65 degree of horizontal clearance wave beams in negative polarization direction, and the 65 of this positive polarization direction degree of horizontal clearance wave beams are identical with the covering region of 65 degree of horizontal clearance wave beams in this negative polarization direction.
Preferably, the positive polarization signal of a sector of five-port for receiving and dispatching in three sector cells; 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 installation and two kinds, six sectors pattern. For system upgrade to six sectors in the case of, it is not necessary to change system antenna equipment, effectively reduce operator network upgrading investment.
By the detailed description of the exemplary embodiment of the present invention, the further feature of the present invention and advantage thereof being become clear referring to accompanying drawing.
Accompanying drawing explanation
Form specification sheets a part drawings describe embodiments of the invention, and together with the description for explaining the principle of the present invention.
With reference to accompanying drawing, according to detailed description below, it is possible to clearly understand the present invention, wherein:
Fig. 1 is the diagram of the embodiment illustrating the antenna installation for mimo systems according to the present invention.
Fig. 2 is the vertical view of antenna installation in Fig. 1.
Fig. 3 is the wave beam directional pattern that the antenna installation illustrated in six sector operating mode produces.
Fig. 4 is the schematic diagram of six sector cells.
Fig. 5 is the wave beam directional pattern that the antenna installation illustrated in three sector operating mode produces.
Fig. 6 is the schematic diagram of three sector cells.
Embodiment
The various exemplary embodiment of the present invention is described in detail now with reference to accompanying drawing. It should be noted that: unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts set forth in these embodiments and step and numerical value do not limit the scope of the invention.
Simultaneously, it should be appreciated that for convenience of description, the size of each part shown in accompanying drawing is not draw according to the proportionlity of reality.
It is explanation property to the description only actually of at least one exemplary embodiment below, never as to any restriction of the present invention and application or use.
Detailed discussion may not be done, but in the appropriate case, described technology, method and equipment should be regarded as authorizing a part for specification sheets for the known technology of person of ordinary skill in the relevant, method and equipment.
In all examples with discussing shown here, any concrete value should be interpreted as being only exemplary, instead of as restriction. Therefore, other example of exemplary embodiment can have different values.
It should be noted that: similar label and letter accompanying drawing below represents similar item, therefore, once a certain Xiang Yi accompanying drawing is defined, then does not need it to be further discussed in accompanying drawing subsequently.
Fig. 1 shows the structural representation of an embodiment of the antenna installation for mimo systems according to the present invention.
This antenna installation can be provided with substrate 11 and substrate 12. Substrate 11 and substrate 12 place plane can form the angle of certain angle. Like this, from this antenna installation of above, two substrates forms meander line structure.
And traditional antenna device adopts Patcho antenna, namely the maximum gain direction of all antenna element of inner antenna all points to antenna normal direction.
Therefore, the antenna of the meander line structure of the application is different from existing Patcho antenna structure.
Preferably, the angle that two substrates place plane is formed can be 120 degree.
Substrate 11 can be provided with dual polarization antenna 13 and dual polarization antenna 14; Substrate 12 can be provided with dual polarization antenna 15 and dual polarization antenna 16. Often row dual polarization antenna can be made up of a positive polarization antenna and a negative polarization antenna.
Every root positive polarization antenna can comprise 4 ~ 10 positive polarization antenna element, and every root negative polarization antenna can comprise 4 ~ 10 negative polarization antenna element. It will be understood by one skilled in the art that the number of concrete antenna element can require specifically to set for gain of antenna according to network, do not limit at this. In the present embodiment, the positive polarization antenna in dual polarization antenna 13 is made up of 4 positive polarization antenna element 131, and negative polarization antenna is made up of 4 negative polarization antenna element 132.
Dual polarization antenna 13, dual polarization antenna 14, dual polarization antenna 15 and dual polarization antenna 16 can along the plane symmetry distributions of the angle dividing substrate 11 and substrate 12 equally.
Preferably, gap between the antenna of the identical direction of polarization on same substrate can be set to 0.7 times ~ 1 times of center frequency point wavelength of antenna frequency range used. Arranged by this kind, it is possible to form 33 degree of horizontal clearance wave beams. Wherein, two positive polarization antennas on substrate 11 will form 33 degree of horizontal clearance wave beams in a positive polarization direction jointly; Two negative polarization antennas on substrate 11 will form 33 degree of horizontal clearance wave beams in a negative polarization direction jointly. And, the position angle of 33 degree of horizontal clearance wave beams that these two direction of polarization are contrary is consistent, and the region covered is identical.
Similarly, the antenna on substrate 12 also can form 33 degree of contrary horizontal clearance wave beams of two direction of polarization, and it is identical to cover region.
It will be understood by one skilled in the art that can according to specific needs, the flexibly angle of adjustment two substrates, antenna kind set on substrate, number of antennas and sky distance between centers of tracks. Such as, it is possible to the spacing of the antenna of two identical direction of polarization on same substrate adjusted, thus form the horizontal wave beam of other width, and it is not limited to 33 degree of horizontal clearance wave beams.
This antenna installation also can comprise for the port to antenna transmission signal. Wherein, port 17 can be connected with two positive polarization antennas on substrate 11; Port 18 can be connected with two negative polarization antennas on substrate 11; Port 19 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 setting of two substrates is described. Fig. 2 is the vertical view of antenna installation in Fig. 1.
By arranging the angle of two substrates, it is possible to the angle of two wave beams that the antenna of adjustment two substrates is formed.
In the present embodiment, as shown in Figure 2, arrow 21 represents the greatest irradiation direction of 33 degree of horizontal clearance wave beams that the dual polarization antenna of substrate 11 is formed; Arrow 22 represents the greatest irradiation direction of 33 degree of horizontal clearance wave beams that the dual polarization antenna of substrate 12 is formed.
The angle formed due to substrate 11 and substrate 12 is 120 degree, and the greatest irradiation direction of two wave beams can form the angle of 60 degree.
By making, six required sector beams can be perpendicular to antenna substrate surface to this kind of symmetrical meander line structure, wave beam direction is antenna plane normal direction, more be conducive to improving 33 degree of horizontal clearance beam qualities, suppress beam side lobe, it is to increase the gain in antenna major lobe direction.
Below in conjunction with Fig. 1, Fig. 3 and Fig. 4, six sector operating mode of this antenna installation are described. Fig. 3 is the wave beam directional pattern that the antenna installation in six sector operating mode produces. Fig. 4 is the subregion schematic diagram of six sector cells.
In six sector operating mode, port 17 can be connected with the positive polarization MIMO signal of sector A, for receiving and dispatching the positive polarization signal of sector A. Port 18 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 19 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 position angle of negative polarization wave beam, and it is identical to cover region. That is, the sector A shown in equal coverage diagram 4.
Equally, the antenna of substrate 12 also can form two contrary wave beams of direction of polarization, 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 wave beam that antenna on two substrates is formed is 60 degree, meets six sectors and covers in network the requirement with antenna pattern.
The wave beam that antenna on substrate 11 is formed can be overlapping with the wave-packet portion that the antenna on substrate 12 is formed. When mobile terminal moves in this overlapping region, sector switch can be there is.
Owing to the same direction of polarization of two antennas on each substrate has carried out synthesis figuration, after two identical polarization antenna figurations, an antenna will be used as. Therefore, the whole antennas on each substrate can support 2 �� 2MIMO operating mode.
Below in conjunction with Fig. 1, Fig. 5 and Fig. 6, three sector operating mode of antenna installation of the present invention are described. Fig. 5 is the wave beam directional pattern that the antenna installation illustrated in three sector operating mode produces. Fig. 6 is the schematic diagram of three sector cells.
In three sector operating mode, port 17 can be merged with port 19 and be connected, port 18 and port 20 are merged connection. 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 same sector in three sector cells.
As shown in Figure 5, owing to being combined by port, and the port after merging is for receiving and dispatching the signal of same sector, and therefore, two 33 degree of horizontal clearance wave beams superposition can form 65 degree of horizontal clearance wave beams 501. These 65 degree of horizontal clearance wave beams 501 are for the sector C shown in coverage diagram 6.
When the wave cover overlap that the antenna of mobile terminal on two substrates is formed is moved, the switching of sector can not be there is.
The MIMO operating mode of 2 �� 2 also supported by antenna installation under this operating mode.
Adopt above-mentioned disclosed antenna installation, by adopting broken line symmetrical structure, it is possible to when keeping sky line hard ware constant, support three sector configuration and six sector configuration of LTEMIMO system.
For system upgrade to six sectors in the case of, network need not change antenna equipment, it is possible to effectively reduces the network upgrading investment of operator, facilitates the dilatation of LTE network.
In addition, adopt the antenna installation of the disclosure, owing to can avoid six sector dilatations needing increase the installation process such as antenna and associated supports, therefore can effectively reduce operator and the difficulty of property coordination.
So far, described the antenna installation for mimo systems according to the present invention in detail. In order to avoid the design covering the present invention, it does not have describe details more known in the field. Those skilled in the art, according to description above, can understand how to implement technical scheme disclosed herein completely.
Although being described in detail by some specific embodiments of the present invention by example, but the technician of this area is it is to be understood that above example is only to be described, instead of in order to limit the scope of the invention. The technician of this area is it is to be understood that can without departing from the scope and spirit of the present invention, modify to above embodiment. The scope of the present invention is limited by claims.
Claims (8)
1. the antenna installation for mimo systems, it is characterised in that, this device comprises:
First substrate and second substrate, described first substrate and described second substrate place plane form angle, to make first substrate and second substrate form meander line structure;
Dual polarization antenna, described first substrate and described second substrate are equipped with two row dual polarization antennas, often arrange described dual polarization antenna and are made up of a positive polarization antenna and a negative polarization antenna; And
To multiple ports of described dual polarization antenna transmission signal, wherein, by adjusting the connection relation of described multiple port, described antenna installation has six sector operating mode and three sector operating mode;
Wherein, described first substrate is provided with the first port and Two-port netwerk, described second substrate is provided with the 3rd port and the 4th port, described first port is to two positive polarization antenna transmission signals on described first substrate, described Two-port netwerk is to two negative polarization antenna transmission signals on described first substrate, described 3rd port is to two positive polarization antenna transmission signals on described second substrate, and described 4th port is to two negative polarization antenna transmission signals on described second substrate.
2. device as claimed in claim 1, it is characterised in that,
The angle that described first substrate and described second substrate place plane are formed is 120 ��.
3. device as claimed in claim 2, it is characterised in that,
Dual polarization antenna on described first substrate and the dual polarization antenna on described second substrate are along the plane symmetry distribution dividing described angle equally.
4. device as claimed in claim 3, it is characterised in that, the spacing of the described two row dual polarization antennas being positioned in same substrate is (0.7��1) ��, and wherein �� is the center frequency point wavelength of described dual polarization antenna frequency range used.
5. device as claimed in claim 4, it is characterised in that,
On the same substrate, 33 degree of horizontal clearance wave beams in two described positive polarization antenna generation positive polarization directions;
Two described negative polarization antennas produce 33 degree of horizontal clearance wave beams in negative polarization direction; Further, 33 degree of horizontal clearance wave beams in described positive polarization direction are identical with the covering region of 33 degree of horizontal clearance wave beams in described negative polarization direction.
6. device as claimed in claim 1, it is characterised in that, in six sector operating mode,
The positive polarization signal of first sector of described first port for receiving and dispatching in six sector cells;
Described Two-port netwerk is for receiving and dispatching the negative polarization signal of described first sector;
The positive polarization signal of two sector of described 3rd port for receiving and dispatching in described six sector cells;
Described 4th port is for receiving and dispatching the negative polarization signal of described 2nd sector; Further,
Described first sector is adjacent with described 2nd sector.
7. device as claimed in claim 1, it is characterised in that, in three sector operating mode,
Described first port and described 3rd port connect and compose five-port, described Two-port netwerk and described 4th port connect and compose the 6th port, so that whole positive polarization antenna of described device produces 65 degree of horizontal clearance wave beams in positive polarization direction, whole negative polarization antenna of described device produces 65 degree of horizontal clearance wave beams in negative polarization direction, and 65 degree of horizontal clearance wave beams in described positive polarization direction are identical with the covering region of 65 degree of horizontal clearance wave beams in described negative polarization direction.
8. device as claimed in claim 7, it is characterised in that,
The positive polarization signal of a sector of described five-port for receiving and dispatching in three sector cells;
Described 6th port is for receiving and dispatching the negative polarization signal of this sector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210231634.9A CN103531880B (en) | 2012-07-05 | 2012-07-05 | For the antenna installation of mimo systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210231634.9A CN103531880B (en) | 2012-07-05 | 2012-07-05 | For the antenna installation of mimo systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103531880A CN103531880A (en) | 2014-01-22 |
| CN103531880B true CN103531880B (en) | 2016-06-01 |
Family
ID=49933702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210231634.9A Active CN103531880B (en) | 2012-07-05 | 2012-07-05 | For the antenna installation of mimo systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103531880B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9735476B2 (en) * | 2014-08-18 | 2017-08-15 | Accton Technology Corporation | Antenna apparatus and the MIMO communication device using the same |
| CN105811105B (en) * | 2014-12-29 | 2019-02-26 | 中国电信股份有限公司 | Active Arrays, 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 |
| CN110391505B (en) * | 2019-07-22 | 2021-08-06 | 中国电子科技集团公司第三十八研究所 | Omnidirectional scanning end-fire array antenna of horizontal wave beam |
| CN113823891B (en) * | 2021-09-28 | 2024-05-10 | 深圳市塞防科技有限公司 | Antenna module, millimeter wave radar and vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2727987Y (en) * | 2004-07-28 | 2005-09-21 | 西安海天天线科技股份有限公司 | A four-polarized array omnidirectional antenna |
| CN2729936Y (en) * | 2004-09-23 | 2005-09-28 | 西安海天天线科技股份有限公司 | Multi-polarization fan region array antenna |
| JP2009049982A (en) * | 2007-07-25 | 2009-03-05 | Buffalo Inc | Multiple input/output communication device, antenna device used in the same, and communications system using the device |
| CN101507143A (en) * | 2006-08-18 | 2009-08-12 | 昆特尔科技有限公司 | Diversity antenna system with electrical tilt |
| CN102150451A (en) * | 2008-10-10 | 2011-08-10 | 阿瓦雅公司 | Coverage optimisation for wireless networks |
| CN102362390A (en) * | 2009-03-23 | 2012-02-22 | 瑞典爱立信有限公司 | Antenna arrangements |
-
2012
- 2012-07-05 CN CN201210231634.9A patent/CN103531880B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2727987Y (en) * | 2004-07-28 | 2005-09-21 | 西安海天天线科技股份有限公司 | A four-polarized array omnidirectional antenna |
| CN2729936Y (en) * | 2004-09-23 | 2005-09-28 | 西安海天天线科技股份有限公司 | Multi-polarization fan region array antenna |
| CN101507143A (en) * | 2006-08-18 | 2009-08-12 | 昆特尔科技有限公司 | Diversity antenna system with electrical tilt |
| JP2009049982A (en) * | 2007-07-25 | 2009-03-05 | Buffalo Inc | Multiple input/output communication device, antenna device used in the same, and communications system using the device |
| CN102150451A (en) * | 2008-10-10 | 2011-08-10 | 阿瓦雅公司 | Coverage optimisation for wireless networks |
| CN102362390A (en) * | 2009-03-23 | 2012-02-22 | 瑞典爱立信有限公司 | Antenna arrangements |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103531880A (en) | 2014-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103531880B (en) | For the antenna installation of mimo systems | |
| EP2539960B1 (en) | A communication system node comprising a re-configuration network | |
| CN102859789B (en) | Aerial array, antenna assembly and base station | |
| US10424839B2 (en) | Phase shifter assembly | |
| CN102570057B (en) | A kind of dual polarization five beam antenna for mobile communication base station | |
| CN105874646A (en) | Array antenna | |
| CN205319307U (en) | Planar array antenna and communication equipment | |
| CN202474227U (en) | Dual-polarized tri-beam antenna for mobile communication base station | |
| CN103765940B (en) | Sector configuration method and device, system | |
| CN106711622A (en) | Antenna array and antenna | |
| CN103367932A (en) | Dual-beam antenna | |
| CN103840261B (en) | Antenna assembly and method for adjusting antenna beams | |
| WO2018040140A1 (en) | Broadband five-beam array antenna | |
| CN106716714A (en) | Stadium antenna | |
| SG182518A1 (en) | A communication system node comprising a transformation matrix | |
| EP3472942B1 (en) | Flexible analog architecture for sectorization | |
| CN104577356B (en) | Antenna system and base station | |
| CN109560391B (en) | MIMO antenna array and antenna reflecting plate thereof | |
| CN101222088B (en) | Compact intelligent antenna | |
| CN107968253A (en) | Mimo antenna system, aerial array and its low frequency radiating element | |
| CN101442751B (en) | Method, apparatus and system for disposing antenna | |
| CN104051864B (en) | Multiple-input and multiple-output eight antenna and base station | |
| CN206628602U (en) | A kind of ultra-wideband dualbeam electrical tilt antenna | |
| CN108093657B (en) | Two-dimensional antenna and network equipment | |
| CN211088520U (en) | Three-dimensional multi-beam antenna and network access system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |