CN203871476U - Broadband dual polarization base station antenna - Google Patents
Broadband dual polarization base station antenna Download PDFInfo
- Publication number
- CN203871476U CN203871476U CN201420136217.0U CN201420136217U CN203871476U CN 203871476 U CN203871476 U CN 203871476U CN 201420136217 U CN201420136217 U CN 201420136217U CN 203871476 U CN203871476 U CN 203871476U
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- Prior art keywords
- oscillator unit
- base station
- station antenna
- dielectric
- slab
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Abstract
The utility model discloses a broadband dual polarization base station antenna comprising a first oscillator unit, a second oscillator unit and a reflection board; the first and second oscillator units are mutually orthogonally embedded and fixed on the reflection board. The first and second oscillator units respectively comprises an oscillator unit left arm, an oscillator unit right arm, a slot wire, a feed microstrip line and a medium plate. The two oscillator units with two plane structures are mutually orthogonally embedded to realize dual polarization; the antenna is simple in structure; microstrip-slit coupling feed is used to obtain width impedance bandwidth; a radiation directional diagram of the dual polarized antenna is stable, gain can reach 9dBi, so the antenna is suitable for mobile communication base station antennas.
Description
Technical field
The utility model relates to antenna of mobile communication base station field, particularly a kind of wideband dual polarized base station antenna.
Background technology
Antenna for base station is as the important component part of mobile communication system, and its performance has decisive role to mobile communication system.Dual polarized antenna adopts polarization diversity technique to be conducive to channeling, receives and dispatches same work, resists the capacity of multipath fading and raising communication system.Dual polarized antenna polarization diversity utilizes the irrelevance between the orthogonal antenna of 45 ° of two polarised directions of soil, and diversity gain is about 5dB, and compared with the conventional space diversity reception to communicate of single-polarized antenna, diversity gain is wanted high about 2dB.In addition, the effect of single-polarized antenna space diversity reception depends on the position of two secondary reception antennas, and the positive direction of antenna cover is best, slowly weakens to both sides, and therefore the actual coverage in community can dwindle.The space diversity reception to communicate that replaces single-polarized antenna by the polarization diversity technique of dual polarized antenna, aerial position affects diversity gain hardly, and the difference that covers principal direction and edge is very little, can substantially improve the reception of edge, and ensuring coverage scope is constant.Dual polarized antenna can receive or launch the electromagnetic wave of two polarization orthogonal, and therefore, in same bandwidth, dual polarized antenna can be launched two kinds of signals, the efficiency of work or channeling when this has improved transmitting-receiving.
The Bipolarization antenna for base station now having proposed has upright oscillator and paster antenna two classes.Paster antenna aperture-coupled, realize dual polarization and need adopt sandwich construction, and bandwidth is narrower to be difficult for obtaining high the isolation.The Bipolarization antenna for base station being formed by the upright oscillator of two couples of the orthogonal placement in center, upright oscillator need be used Ba Lun feed, and Ba Lun has the effect of support concurrently simultaneously, but the integrated of Ba Lun and oscillator acquires a certain degree of difficulty.
Utility model content
The shortcoming and deficiency that exist in order to overcome prior art, the utility model provides a kind of wideband dual polarized base station antenna.
The utility model adopts following technical scheme:
A kind of wideband dual polarized base station antenna, comprises first, second oscillator unit and reflecting plate, mutually orthogonal nested being fixed on reflecting plate in described the first oscillator unit and the second oscillator unit.
Described the first oscillator unit and the second oscillator unit include printing vibrator, feed microstrip line and dielectric-slab, described printing vibrator comprises oscillator unit left arm, oscillator unit right arm, the line of rabbet joint, described oscillator unit left arm, oscillator unit right arm and the line of rabbet joint are printed on the front of dielectric-slab, and described feed microstrip line is printed on the back side of dielectric-slab.
Described oscillator unit left arm and oscillator unit right arm are about dielectric-slab center line mirror image symmetry, and the described line of rabbet joint is positioned at dielectric-slab midline.
Described feed microstrip line comprises the first matching section, the second coupled section and the 3rd matching section, and described the first matching section and the 3rd matching section are respectively perpendicular to the second coupled section, and described the first coupling segment length is 0.1～0.3 λ
0, its characteristic impedance is 50 Ω, the 3rd coupling segment length is 0.5～0.15 λ
0, its characteristic impedance is 50 Ω, λ
0respective antenna centre frequency 830MHz is at the wavelength of free space.
Described oscillator unit left arm and oscillator unit right arm are located downward bending endways, and bending part is not 0.3～0.7 with the ratio of bending part.
First oscillator unit the second coupled section at distributing point place to recessed, second oscillator unit the second coupled section at distributing point place to fovea superior.
In the middle of the first oscillator unit dielectric-slab, have the first oscillator unit groove downwards, in the middle of the second oscillator unit dielectric-slab, upwards have the second oscillator unit groove.
Height 0.2 λ of described first, second oscillator unit
0～0.5 λ
0, λ
0respective antenna centre frequency 830MHz is at the wavelength of free space.
Described reflecting plate is the structure with side.
Described printing vibrator lower end and floor welded.
The beneficial effects of the utility model:
The utility model adopts the mutually orthogonal nested dual polarization that realizes in oscillator unit of two planar structures, simple in structure; Between two oscillators, only need to intert to nest together, be fixed on reflecting plate, four fixing points, auxiliary fixing without other.Feed structure is a printing wideband balun, and the beamwidth of antenna can cover 680-980MHz completely, can cover GSM900 and LTE700 frequency range completely.
Brief description of the drawings
Fig. 1 is the structure chart of a kind of wideband dual polarized base station antenna of the utility model;
Fig. 2 is the first oscillator unit of a kind of wideband dual polarized base station antenna of the utility model;
Fig. 3 is the second oscillator unit of a kind of wideband dual polarized base station antenna of the utility model;
Fig. 4 is the bandwidth figure of a kind of wideband dual polarized base station antenna of the utility model;
Fig. 5 is that a kind of wideband dual polarized base station antenna of the utility model is at 680MHz antenna pattern
Fig. 6 is that a kind of wideband dual polarized base station antenna of the utility model is at 830MHz antenna pattern;
Fig. 7 is that a kind of wideband dual polarized base station antenna of the utility model is at 980MHz antenna pattern;
Fig. 8 is the vertical view of Fig. 1;
Fig. 9 is the front view of Fig. 1.
Shown in figure:
1-the first oscillator unit; 2-the second oscillator unit; 3-reflecting plate; 4A-the first oscillator unit left arm; 4B-the first oscillator unit right arm; The 5-first oscillator unit line of rabbet joint; 6-the first oscillator unit fluting; 7-the first oscillator unit dielectric-slab; 8A-first oscillator unit the first matching section; 8B-first oscillator unit the second coupled section; 8C-the first oscillator unit the 3rd matching section; 9A-the second oscillator unit left arm; 9B-the second oscillator unit right arm; The 10-second oscillator unit line of rabbet joint; 11-the second oscillator unit fluting; 12-the second oscillator unit dielectric-slab; 13A-second oscillator unit the first matching section; 13B-second oscillator unit the second coupled section; 13C-the second oscillator unit the 3rd matching section.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment
As shown in Fig. 1, Fig. 8, Fig. 9, a kind of wideband dual polarized base station antenna, comprises the first oscillator unit 1, the second oscillator unit 2 and reflecting plate 3, and described the first oscillator unit 1 is mutually orthogonal nested with the second oscillator unit 2, and is fixed on reflecting plate center.The height of described first, second oscillator unit is 0.3 λ
0～0.5 λ
0, λ
0for 361.4mm.
As shown in Figure 2, described the first oscillator unit 1 comprises the first oscillator unit left arm 4A, the first oscillator unit right arm 4B, the first oscillator unit line of rabbet joint 5, the first oscillator unit dielectric-slab 7 and the first oscillator unit feed microstrip line, described the first oscillator unit left arm 4A, the first oscillator unit right arm 4B and the first oscillator unit line of rabbet joint 5 are printed on the front of the first oscillator unit dielectric-slab 7, and described the first oscillator unit feed microstrip line is printed on the back side of the first oscillator unit dielectric-slab 7.
As shown in Figure 3, described the second oscillator unit 2 comprises the second oscillator unit left arm 9A, the second oscillator unit right arm 9B, the second oscillator unit line of rabbet joint 10, the second oscillator unit dielectric-slab 12 and the second oscillator unit feed microstrip line, described the second oscillator unit left arm 9A, the second oscillator unit right arm 9B and the second oscillator unit line of rabbet joint 10 are printed on the front of the second oscillator unit dielectric-slab 12, and described the second oscillator unit feed microstrip line is printed on the back side of the second oscillator unit dielectric-slab 12.
Described the first oscillator unit feed microstrip line comprises that first oscillator unit the first matching section 8A, first oscillator unit the second coupled section 8B and the first oscillator unit the 3rd matching section 8C form.Described first oscillator unit the first matching section and the first oscillator unit the 3rd matching section are respectively perpendicular to first oscillator unit the second coupled section, and described the first matching section 8A length is 0.1～0.3 λ
0, its characteristic impedance is 50 Ω, the 3rd matching section 8C length is 0.5～0.15 λ
0, its characteristic impedance is 50 Ω.
Described the second oscillator unit feed microstrip line is made up of second oscillator unit the first matching section 13A, second oscillator unit the second coupled section 13B, the second oscillator unit the 3rd matching section 13C.Described second oscillator unit the first matching section 13A and the second oscillator unit the 3rd matching section 13C are respectively perpendicular to the second coupled section, and described second oscillator unit the first matching section 13A length is 0.1～0.3 λ
0, its characteristic impedance is 50 Ω, the second oscillator unit the 3rd matching section 13C length is 0.5～0.15 λ
0, its characteristic impedance is 50 Ω.
For slot milling is realized the mutually nested of two oscillator unit, in the middle of described the first oscillator unit dielectric-slab 7, have respectively the first oscillator unit fluting 6 that equals dielectric-slab thickness downwards.As shown in Figure 3, on described the second oscillator unit dielectric-slab, have the second oscillator unit fluting 11 that equals dielectric-slab thickness, the first oscillator unit fluting and the second oscillator unit fluting are all positioned at the midline of place dielectric-slab, first corresponding oscillator unit the second coupled section 8B is in Coupling point place to recessed, and second oscillator unit the second coupled section 13B is in Coupling point place to fovea superior.
Oscillator unit left arm, the oscillator unit right arm of described the first oscillator unit and the second oscillator unit are all located downward bending endways, and bending part is not 0.3～0.7 with the ratio of bending part.Oscillator unit left arm and oscillator unit right arm are about center line mirror image symmetry.
The line of rabbet joint of described first, second oscillator unit is positioned at the midline of dielectric-slab.
Oscillator unit left arm, oscillator unit right arm and the line of rabbet joint form printing vibrator.
In the present embodiment, the first oscillator unit dielectric-slab 7 and the second oscillator unit dielectric-slab 12 adopt high frequency sheet material RO4350B, thickness 1.52mm, relative dielectric constant 3.48.
The first oscillator unit 1 of the present embodiment and the height of the second oscillator unit 2 are 117mm, are about 0.32 λ
0, long for 170mm, be about 0.47 λ
0.
In the present embodiment, the length of the first matching section of first, second oscillator unit is 49mm, and width is 3.5mm, and the second coupled section length is 27mm, and width is 2.5mm, and the 3rd matching section length is 26mm, and width is 2.5mm.
Reflecting plate adopts the structure with side, and in the present embodiment, reflecting plate 3 length are 500mm, and overall width is 384mm.Reflecting plate 3 can adopt the sheet material such as aluminium sheet, copper coin.It is 280mm that the base plate of reflecting plate 3 retains dull and stereotyped width, and dual side-edge upwards bends secondary, and bending angle is 150 ° for the first time, and the length of bending part is 60mm, and bending angle is 120 ° for the second time, and the length of bending part is 10mm.
When Broadband circularly polarized antenna group battle array, unit interval can be used 300mm (0.98 λ
980MHz, λ
980MHzfor 306mm), there is not graing lobe at high frequency, elevation radiation patytern is stable.
As shown in Fig. 4, Fig. 5, Fig. 6, Fig. 7, the utility model adopts the mutually orthogonal nested dual polarization that realizes in oscillator unit of two planar structures, feed structure is a printing wideband balun, and the beamwidth of antenna can cover 680-980MHz completely, has truly realized broadband; Adopt with side reflecting plate, realized the horizontal plane half-power beam width of 65 ± 5 °, high-gain can reach 9dBi.In the time of composition base-station antenna array, the spacing between radiating element can reach 306mm (～λ
2, λ
2for the corresponding wavelength of free space frequency 980MHz), four cell array gains can reach 15dBi.
This Bipolarization antenna for base station has whole plane structure, and volume is little, making is simple, it is roomy to be with, antenna pattern is stablized, it is high to gain, very suitable for antenna of mobile communication base station.
Above-described embodiment is preferably execution mode of the utility model; but execution mode of the present utility model is not limited by the examples; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection range of the present utility model.
Claims (9)
1. a wideband dual polarized base station antenna, is characterized in that, comprises first, second oscillator unit and reflecting plate, mutually orthogonal nested being fixed on reflecting plate in described the first oscillator unit and the second oscillator unit;
Described the first oscillator unit and the second oscillator unit include printing vibrator, feed microstrip line and dielectric-slab, described printing vibrator comprises oscillator unit left arm, oscillator unit right arm, the line of rabbet joint, described oscillator unit left arm, oscillator unit right arm and the line of rabbet joint are printed on the front of dielectric-slab, and described feed microstrip line is printed on the back side of dielectric-slab.
2. a kind of wideband dual polarized base station antenna according to claim 1, is characterized in that, described oscillator unit left arm and oscillator unit right arm are about dielectric-slab center line mirror image symmetry, and the described line of rabbet joint is positioned at dielectric-slab midline.
3. a kind of wideband dual polarized base station antenna according to claim 1, it is characterized in that, described feed microstrip line comprises the first matching section, the second coupled section and the 3rd matching section, described the first matching section and the 3rd matching section are respectively perpendicular to the second coupled section, and described the first coupling segment length is 0.1～0.3 λ
0, its characteristic impedance is 50 Ω, the 3rd coupling segment length is 0.5～0.15 λ
0, its characteristic impedance is 50 Ω, λ
0respective antenna centre frequency 830MHz is at the wavelength of free space.
4. a kind of wideband dual polarized base station antenna according to claim 2, is characterized in that, oscillator unit left arm and oscillator unit right arm are located downward bending endways, and bending part is not 0.3～0.7 with the ratio of bending part.
5. a kind of wideband dual polarized base station antenna according to claim 3, is characterized in that, first oscillator unit the second coupled section at distributing point place to recessed, second oscillator unit the second coupled section at distributing point place to fovea superior.
6. a kind of wideband dual polarized base station antenna according to claim 1, is characterized in that, in the middle of the first oscillator unit dielectric-slab, has the first oscillator unit groove downwards, in the middle of the second oscillator unit dielectric-slab, upwards has the second oscillator unit groove.
7. a kind of wideband dual polarized base station antenna according to claim 1, is characterized in that, height 0.2 λ of described first, second oscillator unit
0～0.5 λ
0, λ
0respective antenna centre frequency 830MHz is at the wavelength of free space.
8. a kind of wideband dual polarized base station antenna according to claim 1, is characterized in that, described reflecting plate is the structure with side.
9. a kind of wideband dual polarized base station antenna according to claim 1, is characterized in that, described printing vibrator lower end and floor welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420136217.0U CN203871476U (en) | 2014-03-24 | 2014-03-24 | Broadband dual polarization base station antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420136217.0U CN203871476U (en) | 2014-03-24 | 2014-03-24 | Broadband dual polarization base station antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203871476U true CN203871476U (en) | 2014-10-08 |
Family
ID=51652401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420136217.0U Expired - Fee Related CN203871476U (en) | 2014-03-24 | 2014-03-24 | Broadband dual polarization base station antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203871476U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017097164A1 (en) * | 2015-12-10 | 2017-06-15 | 上海贝尔股份有限公司 | Low-frequency oscillator and multi-frequency multi-port antenna apparatus |
| CN109742558A (en) * | 2018-12-29 | 2019-05-10 | 江苏省东方世纪网络信息有限公司 | Inhale antenna in dual polarization top |
-
2014
- 2014-03-24 CN CN201420136217.0U patent/CN203871476U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017097164A1 (en) * | 2015-12-10 | 2017-06-15 | 上海贝尔股份有限公司 | Low-frequency oscillator and multi-frequency multi-port antenna apparatus |
| CN106876885A (en) * | 2015-12-10 | 2017-06-20 | 上海贝尔股份有限公司 | A kind of low-frequency vibrator and a kind of multifrequency multi-port antenna device |
| US11848492B2 (en) | 2015-12-10 | 2023-12-19 | Rfs Technologies, Inc. | Low band dipole and multi-band multi-port antenna arrangement |
| CN109742558A (en) * | 2018-12-29 | 2019-05-10 | 江苏省东方世纪网络信息有限公司 | Inhale antenna in dual polarization top |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20180324 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |