CN2560107Y - Double-polarization shaped wave beam base station antenna - Google Patents
Double-polarization shaped wave beam base station antenna Download PDFInfo
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- CN2560107Y CN2560107Y CN 02262021 CN02262021U CN2560107Y CN 2560107 Y CN2560107 Y CN 2560107Y CN 02262021 CN02262021 CN 02262021 CN 02262021 U CN02262021 U CN 02262021U CN 2560107 Y CN2560107 Y CN 2560107Y
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- radiating element
- antenna
- base station
- spacing
- wave beam
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Abstract
The utility model relates to a dual polarization beam forming base station antenna comprising a plurality of radiating elements (1), (2), (3), (4), (5) and (6), a reflecting plate (8) and two independent coaxial feeding networks (10). Each radiating element is axially fixed on the reflecting plate (8) with different spacing distances and the amplitude of excitation of each radiating element are the same. The phases of excitation are set with three different groups. The two feed networks respectively divide the two input coaxial lines into three branches, and then each branch is divided into two paths, at last each path is divided into two branch paths to be respectively connected with the corresponding parallel oscillators a, b and c, d in each radiating element. In each frequency point within the working frequencies from 890 MHz to 960 MHz, the first zero point filling of the working area of the radiation direction of the antenna can reach above minus 15 dB and the side lobe in the interference area can be decreased below minus 18 dB, thus effectively reducing the co-channel interference of blind areas and adjacent subdistricts in the working area, and the antenna can be used in cellular mobile networks.
Description
Technical field:
The utility model relates to communication antenna, a kind of specifically dual polarization wave beam forming antenna for base station.Be mainly used in cellular communication system, be particularly suited for using in densely populated urban area.
Background technology:
Current, in mobile communication system, owing to increasing rapidly of customer volume, the deficiency of communication channel has become the serious problems of densely inhabited district, therefore requires consumingly to use effective channeling technology to become current urgent need.Though cellular system is a kind of technology that helps channeling,, in order to carry out frequency reuse effectively, must cut apart again cell.And this usefulness of cutting apart again mainly depends on the radiation direction diagram shape of base station antenna.For the base station antenna, it should have the ratio of bigger useful signal to unwanted signal, and it is more important to have a higher gain than it.In order to guarantee the signal gain in the service area, the general vertical linear array antenna that has reflecting plate that adopts, realize near the secondary lobe compression main beam is disturbed adjacent cell to effectively reduce by synthetic suitable array antenna directional diagram, reduce the frequency reuse distance.At present, the solution of improving the channeling purpose by radiation pattern mainly contains main beam inclination and wave beam forming technology, this technology is in order to realize the target of channeling, require the base station antenna alap level will be arranged to another honeycomb radiation of using same frequency, and high as far as possible level to be arranged to its service area radiation, promptly require the antenna pattern of figuration vertical plane.For realizing this requirement, dual polarization beam array antenna of the prior art is to adopt reciprocity pitch arrays, the antenna pattern that excitation amplitude and the phase place by the pre-built array unit realizes its figuration vertical plane, as shown in Figure 7.Wherein φ 1～φ 6 is the current feed phase of each unit, and A1～A6 is the feed amplitude of each unit, gets first unit as the reference unit, and then each unit interval d equates.
This scheme needs multiport accurate power distributor owing to adopt different excitation amplitude between six radiating elements, thereby not only is difficult to realize, and cost is very high; Because each radiating element is provided with different phase places, the phase control parameter is many, so antenna figuration result's frequency range poor performance simultaneously.
The utility model content:
The purpose of this utility model is to avoid the deficiency of above-mentioned prior art, provides a kind of easy realization, cost low, the dual polarization wave beam forming antenna for base station that figuration is effective.So that directional diagram in vertical is carried out wave beam forming, make it realize the cosecant wave beam as far as possible, improve speech quality, minimizing blind area and co-channel interference in cellular communication.
The key problem in technology of realizing the utility model purpose is to adopt preset unit spacing and excitation phase to realize wave beam forming.Entire antenna comprises a plurality of radiating elements, reflecting plate and coaxial line, each radiating element is axially fixed on the reflecting plate, and by two independently coaxial feeding network connections, wherein adopt unequal-interval to arrange between each radiating element, each radiating element adopts constant power and grouping phase excitation.
Spacing between above-mentioned each radiating element of dual polarization wave beam forming antenna for base station is respectively d
1, d
2,
d
3, d
4, d
5, the Rankine-Hugoniot relations of each spacing is d
2＞d
1＞d
5＞d
4＞d
3
Above-mentioned dual polarization wave beam forming antenna for base station phase place grouping excitation is that radiating element is divided into three groups, and every group of phase place is identical, and middle groups is as reference phase place Φ
0=0, both sides group phase place respectively is Φ
1And Φ
2, and Φ
1＞Φ
2
The constant power of above-mentioned dual polarization wave beam forming antenna for base station and phase place grouping excitation are respectively two input coaxial lines respectively to be divided into three by two feeding networks, again each branch is divided into two-way, at last every road is divided into two branch roads and is connected respectively in each radiating element on corresponding parallel oscillator ab and the cd and realizes.
The utility model can be realized dual polarization figuration antenna for base station wave beam forming by the axial spacing between each radiating element and the excitation phase of each unit on two tabular radiant bodies of adjustment.Compare with existing Bipolarization antenna for base station shown in Figure 8, have following advantage:
1. all radiating elements are provided with the grouping phase excitation, need the parameter of control few, help
The bandwidth of broadening antenna utilizes transmission line to be easy to realize;
2. all radiating elements are adopted identical excitation amplitude, saved arm and a leg power branch
Orchestration has reduced the cost of antenna;
3. it is fixing to adopt unequal-interval to arrange to each radiating element, and its adjustment can realize when antenna is made easily.
Actual measurement shows, the utlity model has with good band characteristic figuration effect, as Fig. 3～shown in Figure 7.From illustrated each Frequency point as can be seen, the first zero of this radiation pattern service area is filled and can be reached-15dB on whole very wide frequency range, and can be pressed into-18dB at the secondary lobe of interference range.Solved " tower is black down " (blind area) problem that general antenna occurs; Simultaneously can reduce the neighbor cell co-channel interference, improve power system capacity, improve communication efficiency.
Description of drawings:
Fig. 1 is overall structure figure of the present utility model
Fig. 2 is a radiating element schematic diagram of the present utility model
Fig. 3 is that the utility model sets up the schematic diagram with working condition
Fig. 4 is the antenna service behaviour figure of the utility model at the 890MHz Frequency point
Fig. 5 is the antenna service behaviour figure of the utility model at the 920MHz Frequency point
Fig. 6 is the antenna service behaviour figure of the utility model at the 960MHz Frequency point
Fig. 7 is the radiating element schematic diagram of prior art
Embodiment:
Fig. 1 and Fig. 2 have provided most preferred embodiment of the present utility model.See figures.1.and.2,8 is trough shaped reflecting plate base plate, and 7 is the side plate of trough shaped reflecting plate, is provided with angle 9 between this side plate 7 and the base plate 8, and this angle can be spent between 180 degree 90 and regulate. Radiating element 1,2,3,4,5,6 is the diamond structure of four symmetrical dipole a, b, c, d composition, in each rhombus radiating element oscillator a, the b of two kinds of different directions and c, d adopt two independently coaxial line be connected network (10) feed, these two latticed forms are identical, and for the connected mode of equidirectional oscillator in each radiating element also identical (only having drawn among the figure one).Six radiating elements are unequal-interval to be arranged, and is axially fixed on the reflecting plate base plate 8, and the excitation amplitude of each radiating element equates, the excitation phase difference, and adopt grouping setting.Wherein the spacing between radiating element 2 and the radiating element 1 is d1; Spacing between radiating element 3 and the radiating element 2 is d2; Spacing between radiating element 4 and the radiating element 3 is d3; Spacing between radiating element 5 and the radiating element 4 is d4; Spacing between radiating element 6 and the radiating element 5 is d5; The Rankine-Hugoniot relations of each spacing is d
2＞d
1＞d
5＞d
4＞d
3The excitation phase of radiating element 1,2 is identical, is Φ
1The excitation phase of radiating element 3,4 is identical, and gets it for fixed phase, i.e. Φ
0=0; The excitation phase of radiating element 5,6 is identical, is Φ
2The radiating element 1 and 2,3 and 4,5 and 6 of identical excitation phase respectively is made as one group, and every group excitation phase closes and is Φ
0=0, Φ
1＞Φ
2This antenna is to finish by the coaxial line branched structure and the length of two feeding networks to the realization of its constant power and grouping excitation phase.Promptly two feeding networks respectively are divided into three with two input coaxial lines respectively, are connected on every group the node, again each branch are divided into two-way, every road is divided into two branch roads again is connected respectively on parallel oscillator a, the b and c, d corresponding in each radiating element.
Referring to Fig. 3, the utility model sets up the certain angle of declination of Shi Yaoyou in real work, to cooperate the figuration effect.Can find out that from the actual conditions of Fig. 3 antenna work elevation radiation patytern is spent between 120 degree 90, obtains very dark zero point originally filling, and represents the blind spot in the antenna for base station working region these zero points.By filling to these zero points, reduced the appearance of blind area, improved communication quality greatly.Elevation radiation patytern 60 spend to the lobe between 90 degree be on secondary lobe, by can reducing the interference of adjacent area, and more energy is concentrated in the working region to the compacting of these regional lobes, improved the service behaviour of antenna.
Fig. 4 shows, when the same day, line was operated in the frequency of 890MHz, it was filled zero point (among the figure about 100 degree corresponding value) and can reach-14.94dB, and secondary lobe in the compacting (among the figure 60 spend spend to 90 between) is all less than-17.56dB;
Fig. 5 shows, when the same day, line was operated in the frequency of 920MHz, it was filled and can arrive-14.74dB zero point, and secondary lobe is all less than-19.13dB in the compacting;
Fig. 6 shows, when the same day, line was operated in the frequency of 960MHz, it was filled zero point and is-15.75dB, and secondary lobe is less than-18.79dB in the compacting.
From each frequency performance of above-mentioned Fig. 4～Fig. 6 as can be seen, this antenna is on whole very wide frequency range, and the first zero of antenna pattern service area is filled and can be reached-15dB, has reduced the blind area; Can hang down-18dB towards suppressing at the interference range antenna with the secondary lobe of distinguishing frequently.This result proves that this antenna truly has extraordinary service behaviour, and these performances now only need preset unit spacing and excitation phase just can realize.
The utility model provides a dual polarization wave beam forming antenna for base station embodiment who comprises six radiating elements, obviously, described those skilled in the art can be without any creative work, and utilize technical conceive of the present utility model, make the similar figuration antenna for base station that is not limited only to these six radiating elements.
Claims (4)
1, a kind of dual polarization wave beam forming antenna for base station, comprise a plurality of radiating elements, reflecting plate and coaxial line, each radiating element is axially fixed on the reflecting plate (8), and by two independently coaxial feeding network (10) connections, it is characterized in that adopting between each radiating element unequal-interval to arrange, each radiating element adopts constant power and grouping phase excitation.
2, dual polarization wave beam forming antenna for base station according to claim 1 is characterized in that the radiating element (1) and the spacing of (2) are d
1, radiating element (2) is d with the spacing of (3)
2, radiating element (3) is d with the spacing of (4)
3, radiating element (4) is d with the spacing of (5)
4, radiating element (5) is d with the spacing of (6)
5, the Rankine-Hugoniot relations of each spacing is d
2＞d
1＞d
5＞d
4＞d
3
3, dual polarization wave beam forming antenna for base station according to claim 1, the phase excitation that it is characterized in that dividing into groups is the phase place Φ that radiating element (1), (2) are set
1Identical; The phase place Φ of radiating element (5), (6)
2Identical; The phase place of radiating element (3), (4) is identical, and conduct is with reference to phase place Φ
0Three groups phase relation is Φ
0=0, Φ
1＞Φ
2
4, according to claim 1 or 3 described dual polarization wave beam forming antenna for base station, it is characterized in that constant power and phase place grouping excitation is respectively two input coaxial lines respectively to be divided into three by two feeding networks, again each branch is divided into two-way, at last every road is divided into two branch roads and is connected respectively on parallel oscillator a, the b and c, d corresponding in each radiating element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262021 CN2560107Y (en) | 2002-08-02 | 2002-08-02 | Double-polarization shaped wave beam base station antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262021 CN2560107Y (en) | 2002-08-02 | 2002-08-02 | Double-polarization shaped wave beam base station antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2560107Y true CN2560107Y (en) | 2003-07-09 |
Family
ID=33728673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02262021 Expired - Fee Related CN2560107Y (en) | 2002-08-02 | 2002-08-02 | Double-polarization shaped wave beam base station antenna |
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|---|---|
| CN (1) | CN2560107Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916903A (en) * | 2010-07-20 | 2010-12-15 | 江苏捷士通科技股份有限公司 | Double-polarized base station antenna die-casting radiation unit |
| CN101960666A (en) * | 2008-03-07 | 2011-01-26 | 日本电气株式会社 | Antenna device, power supply circuit, and radio transmission/reception method |
| CN102195143A (en) * | 2011-03-10 | 2011-09-21 | 东南大学 | Broadband shunt-feed omnidirectional antenna array with inclination angle |
| CN101189757B (en) * | 2005-06-29 | 2012-07-04 | 卡施卡拉夫特公司 | System and method for providing antenna radiation pattern control |
| CN102760974A (en) * | 2012-07-13 | 2012-10-31 | 华为技术有限公司 | Antenna and active antenna system |
| CN103050788A (en) * | 2012-12-31 | 2013-04-17 | 华为技术有限公司 | Antenna array unit, array antenna, multi-frequency antenna unit and multi-frequency array antenna |
| CN103177272A (en) * | 2011-12-23 | 2013-06-26 | 广州安的电子科技有限公司 | Radio frequency identification (RFID) three-dimensional access door |
| CN103367932A (en) * | 2013-06-28 | 2013-10-23 | 武汉虹信通信技术有限责任公司 | Dual-beam antenna |
| CN108767498A (en) * | 2018-04-28 | 2018-11-06 | 广东博纬通信科技有限公司 | A kind of multisystem antenna for base station of controllable beam angle |
-
2002
- 2002-08-02 CN CN 02262021 patent/CN2560107Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189757B (en) * | 2005-06-29 | 2012-07-04 | 卡施卡拉夫特公司 | System and method for providing antenna radiation pattern control |
| CN101960666A (en) * | 2008-03-07 | 2011-01-26 | 日本电气株式会社 | Antenna device, power supply circuit, and radio transmission/reception method |
| CN101960666B (en) * | 2008-03-07 | 2014-11-19 | 日本电气株式会社 | Antenna device, power supply circuit, and radio transmission/reception method |
| CN101916903A (en) * | 2010-07-20 | 2010-12-15 | 江苏捷士通科技股份有限公司 | Double-polarized base station antenna die-casting radiation unit |
| CN102195143A (en) * | 2011-03-10 | 2011-09-21 | 东南大学 | Broadband shunt-feed omnidirectional antenna array with inclination angle |
| CN103177272A (en) * | 2011-12-23 | 2013-06-26 | 广州安的电子科技有限公司 | Radio frequency identification (RFID) three-dimensional access door |
| CN102760974A (en) * | 2012-07-13 | 2012-10-31 | 华为技术有限公司 | Antenna and active antenna system |
| CN102760974B (en) * | 2012-07-13 | 2015-05-13 | 华为技术有限公司 | Antenna and active antenna system |
| CN103050788A (en) * | 2012-12-31 | 2013-04-17 | 华为技术有限公司 | Antenna array unit, array antenna, multi-frequency antenna unit and multi-frequency array antenna |
| CN103367932A (en) * | 2013-06-28 | 2013-10-23 | 武汉虹信通信技术有限责任公司 | Dual-beam antenna |
| CN103367932B (en) * | 2013-06-28 | 2016-06-08 | 武汉虹信通信技术有限责任公司 | A kind of two-beam antenna |
| CN108767498A (en) * | 2018-04-28 | 2018-11-06 | 广东博纬通信科技有限公司 | A kind of multisystem antenna for base station of controllable beam angle |
| CN108767498B (en) * | 2018-04-28 | 2024-01-30 | 广东博纬通信科技有限公司 | Multisystem base station antenna capable of controlling wave beam width |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |