CN103647138B - Broadband dual polarized antenna - Google Patents
Broadband dual polarized antenna Download PDFInfo
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- CN103647138B CN103647138B CN201310582939.9A CN201310582939A CN103647138B CN 103647138 B CN103647138 B CN 103647138B CN 201310582939 A CN201310582939 A CN 201310582939A CN 103647138 B CN103647138 B CN 103647138B
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- reflecting plate
- main body
- dual polarization
- vibrator main
- polarized antenna
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Abstract
The invention discloses a kind of broadband dual polarized antenna, on reflecting plate, each dual polarization vibrator body peripheral edge arranges 2 or 4 parasitic radiation gaps, ratio before and after aerial array can be improved 2dB～6dB, and improve isolation index to a certain extent.In addition, the use of barrier assembly not only significantly improves the convergence of radiating element S parameter, improve impedance and the isolation index of aerial array, and index is compared in the cross polarization improving antenna array pattern horizontal plane by a relatively large margin, meet current antenna for base station demand in terms of wide-band high-performance, have a good application prospect in the communications field.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of broadband dual polarized antenna.
Background technology
Along with developing rapidly of mobile communication technology, the demand of wideband height radiance antenna for base station gradually manifests,
Wideband is i.e. respectively provided with excellent impedance and isolation index, high spoke in multiple mobile communication operating frequency ranges
Penetrate performance and i.e. there is excellent radiation index, particularly horizontal plane radiation index, to realize good covering effect
Really.
The performance of antenna for base station depends primarily on the performance of unit in aerial array.Present stage is mainly by excellent
Change the design form of radiating doublet itself and size improves standing-wave ratio and isolation index, but this mode
The limitation improved, it is difficult to meet the application scenario of broadband multi-standard.Cross polarization than with ratio is front and back
Two indices important in horizontal plane radiation characteristic, for ultra-wideband antenna, high band cross-pole
Than being two key factors restricting horizontal plane radiation performance before and after change ratio and low-frequency range, present stage is mainly leads to
Cross the size optimizing radiating doublet itself with the simple sectional dimension of reflecting plate that changes to improve These parameters, but
Owing to improving limitation, thus it is easily caused low-frequency range and gets over district's interference and high band diversity reception effect variation,
Additionally, due to high band cross polarization is deteriorated than index when as a rule having a down dip, the most just reduce antenna
Tilt angled down scope, thus limit the use occasion of antenna for base station.
Summary of the invention
Based on above-mentioned situation, the present invention proposes a kind of broadband dual polarized antenna, with optimize antenna impedance and
Isolation index.
A kind of broadband dual polarized antenna, including at least one dual polarization vibrator main body, at least two barrier assembly,
And a reflecting plate；
Described dual polarization vibrator main body is installed on described reflecting plate successively, forms an array, the two of array
End, and it is respectively mounted a described barrier assembly between adjacent two described dual polarization vibrator main bodys, described
Reflecting plate arranges two or four rectangular channel, often near each described dual polarization vibrator main body position
Individual rectangular channel becomes a parasitic radiation gap,
Described dual polarization vibrator main body includes oscillator radiation arm and supports balun.
Broadband dual polarized antenna of the present invention each dual polarization vibrator body peripheral edge on reflecting plate arranges 2 or 4
Individual parasitic radiation gap, can improve 2dB～6dB by comparing before and after aerial array, and to a certain extent
Improve isolation index.Additionally, the use of barrier assembly not only significantly improves radiating element S parameter
Convergence, improves impedance and the isolation index of aerial array, and by a relatively large margin improve antenna array
The cross polarization of column direction figure horizontal plane, than index, meets current antenna for base station in terms of money frequency range high-performance
Demand, have a good application prospect in the communications field.
Accompanying drawing explanation
Fig. 1 is the perspective view of radiating element in broadband dual polarized antenna of the present invention；
Fig. 2 is the perspective view of broadband dual polarized antenna first embodiment of the present invention；
Fig. 3 is the perspective view of broadband dual polarized antenna the second embodiment of the present invention；
Fig. 4 is the perspective view of broadband dual polarized antenna the 3rd embodiment of the present invention；
Fig. 5 is the perspective view of broadband dual polarized antenna the 4th embodiment of the present invention；
Fig. 6 is the perspective view of broadband dual polarized antenna the 5th embodiment of the present invention；
Fig. 7 is the side view of radiating element in broadband dual polarized antenna of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is described in further detail.Should be appreciated that specific embodiment party described herein
Formula, only in order to explain the present invention, does not limit protection scope of the present invention.
The broadband dual polarized antenna of the present invention is the broadband dual polarized antenna of a kind of wideband height radiance, its bag
Include at least one dual polarization vibrator main body, at least two barrier assembly, and a reflecting plate.
Described dual polarization vibrator main body includes oscillator radiation arm and supports balun, and each dual polarization vibrator main body depends on
Secondary be installed on described reflecting plate, form an array, the two ends of array, and adjacent two described bipolar
Changing and be respectively mounted a described barrier assembly between vibrator body, described reflecting plate shakes in each described dual polarization
Arranging two or four rectangular channel near sub-main body position, each rectangular channel becomes a parasitic radiation
Gap.
As it is shown in figure 1, a dual polarization vibrator main body 5, and the parasitic radiation gap 4 of periphery and isolation group
(barrier assemblies of 1,2,3 compositions) part forms a radiating element, and radiating element lateral cross section is as shown in Figure 7.
Dual polarization vibrator main body can be for marking the form shown in 5 in Fig. 1, it is also possible to for marking 7 in Fig. 6
Shown form, or other type of equivalent symmetrical oscillator form, by technique systems such as panel beating or die casting
Forming, vibrator body is positioned at the transverse center position of reflecting plate 6, is highly approximately 1/4 central task ripple
Long, transmitting and the reception of electromagnetic signal is carried out as principal radiating section.Described center operating wavelength is this
The center operating wavelength of broadband dual polarized antenna.
Parasitic radiation gap is the rectangular channel opened on reflecting plate, as Fig. 1 marks the form shown in 4,
Gap length is 0.2～0.5 center operating wavelength, and width is 0.01～0.04 center operating wavelength.
In first embodiment of this broadband dual polarized antenna, as shown in Figure 1, 2, each radiating element bag
Include two parasitic radiation gaps, the longitudinally asymmetric both sides being distributed in dual polarization vibrator main body 5, each gap with
The vertical centre distance of dual polarization vibrator main body 5 is 0.1～0.3 center operating wavelength.By optimizing parasitic spoke
Penetrate size and the particular location in gap, ratio before and after whole radiating element can be improved 2dB～6dB, and
Improve the isolation index of radiating element to a certain extent.Described longitudinal direction is the length institute along reflecting plate
Direction, in other words along radiating element arrangement direction, the direction appeared below is all as benchmark.
In second embodiment of this broadband dual polarized antenna, parasitic radiation gap can also lateral symmetry point
Be distributed in the both sides of dual polarization vibrator main body, the form that implements for as Fig. 3 marks shown in 8, its size and
Particular location is consistent with embodiment one.
In the 3rd embodiment of this broadband dual polarized antenna, each radiating element can also include that 4 are posted
Raw radiating slot, every a pair respectively vertical and horizontal be symmetrically distributed in the both sides of dual polarization vibrator main body, specifically
Way of realization is as marked shown in 9 in Fig. 4, and its size is consistent with embodiment one with particular location.
In the 4th embodiment of this broadband dual polarized antenna, each radiating element can also include that 4 are posted
Raw radiating slot, is symmetrically distributed in the two of dual polarization vibrator main body at+45 ° and-45 ° of directions every a pair respectively
Side, the form that implements is as marked shown in 10 in Fig. 5, and its size is consistent with embodiment one with particular location.
In broadband dual polarized antenna shown in Fig. 6, dual polarization vibrator main body therein and other several embodiments
All different, can be as the 5th embodiment.
Two barrier assemblies are symmetrically distributed in the both sides of dual polarization vibrator main body, it is preferable that each isolation group
Vertical centre distance between part and vibrator body is 0.35～0.45 center operating wavelength, concrete such as Fig. 1 institute
Show.In an antenna array, the vertical centre distance between each barrier assembly with adjacent vibration generators main body is phase
The 1/2 of adjacent vibrator body spacing, as shown in Figure 2.
As a preferred embodiment, as shown in Figure 7, each isolates the lateral cross section of barrier assembly
Assembly is moulded by the sheet metal (preferably aluminium flake) of " several " font bending, two plastics studs 2 and four
Material screw 3 is formed；Wherein aluminium flake includes 1, two tilting sections 12 of an epimere and two hypomeres 13, its
A length of 0.1～0.25 center operating wavelength of middle epimere 1, width is 3mm～10mm, parallel be placed in anti-
Penetrate on plate, be 0.25～0.5 center operating wavelength with the vertical centre distance of reflecting plate.Tilting section 12 is with upper
Included angle A between section 1 is between 10 °～50 °, and width is identical with epimere 1.The length of hypomere 13 and width
Degree scope is 5mm～15mm, and it is closely joined together with plastics stud 2 by plastic screw 3.Whole
Aluminium flake is formed by panel beating, and thickness range is 1～3mm.Plastics stud 2 altitude range is 10mm～30mm,
Distance between two plastics studs is 0.45～0.7 center operating wavelength.Between plastics stud and expelling plate
Linked together by plastic screw.
The use of barrier assembly not only significantly improves the convergence of radiating element S parameter, improves radiation single
Unit and the impedance of aerial array and isolation index, and by a relatively large margin improve radiating element and battle array thereof
Index is compared in the cross polarization of column direction figure horizontal plane.Insulated contact is used, also between barrier assembly and reflecting plate
Ensure that intermodulation index.Additionally, due to bending aluminium flake uses " several " character form structure, such that it is able to effectively keep away
Exempt from malformation.
Radiating element is positioned on reflecting plate 6, can be optimized by the size of regulation reflecting plate width and side 14
Directional diagram.The array of radiating element composition as shown in figures 2-6, can obtain satisfied making by reasonably optimizing size
By the base-station antenna array required.
The relative bandwidth of the aerial array of above-mentioned radiating element and formation thereof more than 40%, horizontal radiation pattern
In axially cross polarization is than index more than 25dB, ± 60 ° of cross polarization ratios are more than 15dB, and front and back ratio is more than
27dB, the high performance demand of wide-band needed for current antenna for base station can being met completely.Compared to existing
Base station radiating element and aerial array, not only have more excellent impedance and isolation index, and be obviously improved
The cross polarization in radiation level face than and front and back ratio index, ensure that structural stability and intermodulation index simultaneously.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is as the criterion.
Claims (4)
1. a broadband dual polarized antenna, it is characterised in that
Including at least one dual polarization vibrator main body, at least two barrier assembly, and a reflecting plate；
Described dual polarization vibrator main body is installed on described reflecting plate successively, forms an array, the two of array
End, and it is respectively mounted a described barrier assembly between adjacent two described dual polarization vibrator main bodys, described
Reflecting plate arranges two or four rectangular channel, often near each described dual polarization vibrator main body position
Individual rectangular channel becomes a parasitic radiation gap,
Described dual polarization vibrator main body includes oscillator radiation arm and supports balun；
Each described barrier assembly includes that the sheet metal of a few font bendings, two plastics studs and four mould
Material screw, described sheet metal is fixed on described reflecting plate by described plastics stud and described plastic screw；
Described sheet metal includes an epimere (1), two tilting sections (12) and two hypomeres (13), described epimere (1)
A length of 0.1～0.25 center operating wavelength, width is 3mm～10mm, parallel is placed in described reflecting plate
On, it is 0.25～0.5 center operating wavelength with the vertical centre distance of described reflecting plate, tilting section (12) is with upper
Angle between section (1) is between 10 °～50 °, and width is identical with epimere (1), the length of hypomere (13) and width
Degree scope is 5mm～15mm, and it is closely joined together with plastics stud (2) by plastic screw (3), described
Sheet thicknesses scope is 1～3mm, and described plastics stud (2) altitude range is 10mm～30mm, two institutes
Stating the distance between plastics stud is 0.45～0.7 center operating wavelength, described plastics stud and described reflection
Linked together by described plastic screw between plate.
Broadband dual polarized antenna the most according to claim 1, it is characterised in that described sheet metal is aluminium
Sheet.
Broadband dual polarized antenna the most according to claim 1, it is characterised in that
A length of 0.2～0.5 center operating wavelength in each described parasitic radiation gap on described reflecting plate,
Width is 0.01～0.04 center operating wavelength, and lateral symmetry, longitudinally asymmetric or become 45 degree of angle symmetries divide
It is distributed in the periphery of each described dual polarization vibrator main body, to the vertical centre distance of described dual polarization vibrator main body
It it is 0.1～0.3 center operating wavelength.
Broadband dual polarized antenna the most according to claim 1, it is characterised in that
Described dual polarization vibrator main body is symmetrical dipole form, is made by panel beating or extrusion process, position
In the transverse center position of described reflecting plate, height is 1/4 center operating wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310582939.9A CN103647138B (en) | 2013-11-19 | 2013-11-19 | Broadband dual polarized antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310582939.9A CN103647138B (en) | 2013-11-19 | 2013-11-19 | Broadband dual polarized antenna |
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| CN103647138A CN103647138A (en) | 2014-03-19 |
| CN103647138B true CN103647138B (en) | 2016-08-17 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943970A (en) * | 2014-04-21 | 2014-07-23 | 广州博纬通信科技有限公司 | Dual-polarization broadband array antenna |
| CN105261829B (en) * | 2015-11-09 | 2018-06-12 | 中天宽带技术有限公司 | It is a kind of high front and rear to compare Bipolarization antenna for base station |
| CN106992361A (en) * | 2017-01-12 | 2017-07-28 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Isolation optimization method between bay |
| CN106785376A (en) * | 2017-01-13 | 2017-05-31 | 嘉兴市安信通讯技术有限公司 | A kind of dual polarization broadband base station antenna radiation unit |
| CN106921027A (en) * | 2017-03-02 | 2017-07-04 | 京信通信技术(广州)有限公司 | Bipolar radiator and antenna, base station |
| CN110622352B (en) | 2017-05-16 | 2021-05-07 | 日本电业工作株式会社 | Array antenna |
| CN107579355B (en) * | 2017-08-15 | 2024-07-05 | 佛山市波谱达通信科技有限公司 | Medium-sized dual-frenquency perpendicular big opening angle shot-light antenna |
| CN107819195B (en) * | 2017-11-23 | 2023-10-13 | 广东通宇通讯股份有限公司 | Base station antenna and isolation board thereof |
| KR102412521B1 (en) * | 2018-01-12 | 2022-06-23 | 주식회사 케이엠더블유 | Antenna Apparatus |
| CN111129677B (en) * | 2018-10-31 | 2022-10-28 | 康普技术有限责任公司 | Isolator for antenna system and related antenna system |
| CN109599665B (en) * | 2019-01-08 | 2024-04-19 | 广州司南技术有限公司 | Dual-polarized array antenna and application thereof |
| CN112151959A (en) * | 2019-06-26 | 2020-12-29 | 江苏嘉华通讯科技有限公司 | Base station antenna and cover |
| CN111262030A (en) * | 2020-01-20 | 2020-06-09 | 西安交通大学 | Method for improving linear polarization compact MIMO antenna array channel capacity |
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| CN202523848U (en) * | 2012-02-10 | 2012-11-07 | 摩比天线技术（深圳）有限公司 | Ultrawide-band dual-polarized electrically-tunable antenna |
| CN203760677U (en) * | 2013-11-19 | 2014-08-06 | 广州杰赛科技股份有限公司 | Dual-polarized antenna array |
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| CN201054387Y (en) * | 2007-07-13 | 2008-04-30 | 京信通信系统（中国）有限公司 | High front/rear ratio low sidelobe antenna |
| EP2471142A4 (en) * | 2009-08-26 | 2017-08-23 | Amphenol Corporation | Device and method for controlling azimuth beamwidth across a wide frequency range |
| KR20120008283A (en) * | 2010-07-16 | 2012-01-30 | 한국항공대학교산학협력단 | PCB Substrate Directional Dipole Antenna |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202523848U (en) * | 2012-02-10 | 2012-11-07 | 摩比天线技术（深圳）有限公司 | Ultrawide-band dual-polarized electrically-tunable antenna |
| CN203760677U (en) * | 2013-11-19 | 2014-08-06 | 广州杰赛科技股份有限公司 | Dual-polarized antenna array |
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| CN103647138A (en) | 2014-03-19 |
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