CN203910978U - Multi-frequency dual polarization electrically-regulated antenna - Google Patents

Multi-frequency dual polarization electrically-regulated antenna Download PDF

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Publication number
CN203910978U
CN203910978U CN201420301500.4U CN201420301500U CN203910978U CN 203910978 U CN203910978 U CN 203910978U CN 201420301500 U CN201420301500 U CN 201420301500U CN 203910978 U CN203910978 U CN 203910978U
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frequency radiation
isolator
cell array
radiation cell
reflecting plate
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CN201420301500.4U
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Chinese (zh)
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曾骏
蔡娟
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Mobi Antenna Technology Shenzhen Co Ltd
Mobi Technology Xian Co Ltd
Mobi Antenna Technologies Jian Co Ltd
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Mobi Antenna Technology Shenzhen Co Ltd
Mobi Technology Xian Co Ltd
Mobi Antenna Technologies Jian Co Ltd
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Priority to CN201420301500.4U priority Critical patent/CN203910978U/en
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Abstract

The utility model is applicable to a mobile base station antenna, and provides a multi-frequency dual polarization electrically-regulated antenna. The multi-frequency dual polarization electrically-regulated antenna comprises a reflection plate, radiation units, decoupling devices, feed networks, transmission devices and an outer cover, wherein the obverse side of the reflection plate is provided with the radiation units and the decoupling devices, the reverse side is provided with the feed networks and the transmission devices, and the transmission devices are movably connected with the feed networks respectively; the obverse side of the reflection plate is longitudinally provided with at least two columns of radiation units and comprises high-frequency radiation unit arrays and low-frequency radiation unit arrays, an intersection point of an axis of the low-frequency radiation unit array and a center line of the high-frequency radiation unit array is provided with a first decoupling device and a second decoupling device, and a third decoupling device is arranged between the high-frequency radiation unit array and the low-frequency radiation unit array. The multi-frequency dual polarization electrically-regulated antenna realizes an effect of improving the isolation, the cross-polarization ratio and the beam convergence of the antenna.

Description

Multifrequency dual polarization electrical tilt antenna
Technical field
The utility model relates to mobile base station antenna field, relates in particular to a kind of multifrequency dual polarization electrical tilt antenna.
Background technology
Along with the arriving in 4G epoch, the market demand of multifrequency antenna is more and more, and the requirement of performance is also being improved day by day.Often there is following problem in the multifrequency dual polarization electrical tilt antenna that prior art provides: 1, the mutual coupling between each port is very strong, and isolation is difficult to be adjusted, and often has the phenomenon that mixes up other index variation after isolation.2, the cross polarization ratio of each frequency range, optimization space is physically very limited.3, the horizontal plane beamwidth of high band is too dispersed, and minimum value approaches 50 °, and optimization space is physically equally very limited.4, batch production consistency is poor, and qualification rate is lower.
In summary, obviously there is inconvenience and defect in prior art in actual use, so be necessary to be improved.
Summary of the invention
For above-mentioned defect, the purpose of this utility model is to provide a kind of multifrequency dual polarization electrical tilt antenna, object is effectively to reduce the mutual coupling between each port, play and improve isolation between antennas, cross polarization ratio and the constringent effect of wave beam, avoid the CURRENT DISTRIBUTION of radiating element in the horizontal direction or in vertical direction asymmetric, improve antenna directivity.
To achieve these goals, the utility model provides a kind of multifrequency dual polarization electrical tilt antenna, comprising:
Reflecting plate, radiating element, isolator, feeding network, transmission device and outer cover, described reflecting plate front is provided with described radiating element and described isolator, be provided with overleaf described feeding network, described transmission device, described transmission device is flexibly connected with described feeding network; The front of described reflecting plate is vertically arranged with at least two row radiating elements, and comprise high frequency radiation cell array, low frequency radiation cell array, intersection point place at the axis of described low frequency radiation cell array and the center line of described high frequency radiation unit is provided with the first isolator, the second isolator, and the 3rd isolator is arranged between described high frequency radiation cell array and described low frequency radiation cell array.
According to multifrequency dual polarization electrical tilt antenna described in the utility model, the two bottom sides that is positioned at described reflecting plate is provided with described high frequency radiation cell array, and described low frequency radiation cell array is fixed on the longitudinal central axis line in front, bottom of described reflecting plate;
Described the first isolator comprises bonding jumper, support, and the vertical sectional shape of described bonding jumper comprises arch, opening rectangle, and described bonding jumper length is 0.2~1 times of described reflecting plate width; And/or
Described the second isolator is sheet metal, and described sheet metal shape comprises that chamfering is trapezoidal, rectangle; And/or
Described the 3rd isolator is arranged at the both sides of described low frequency radiation cell array.
According to multifrequency dual polarization electrical tilt antenna described in the utility model, described the second isolator is arranged at the axis of described low frequency radiation cell array, and described the first isolator is positioned at the midline of described high frequency radiation unit.
According to multifrequency dual polarization electrical tilt antenna described in the utility model, the described bonding jumper of described the first isolator is positioned in described support, and described support card is connected on the bottom of described reflecting plate.
According to multifrequency dual polarization electrical tilt antenna described in the utility model, the height of described the second isolator is 0.5~1.5 times of described high frequency radiation cell height.
According to multifrequency dual polarization electrical tilt antenna described in the utility model, the shape of cross section of described the 3rd isolator is that doubling is an angle of 90 degrees, and be highly 0.25~0.75 times of described low frequency radiation cell height, and length is identical with the length of described high frequency radiation cell array.
According to multifrequency dual polarization electrical tilt antenna described in the utility model, described radiating element connects described feeding network by coaxial cable respectively, described feeding network connection for transmission device, and described transmission device drives described feeding network along described reflecting plate longitudinal sliding motion.
The utility model is by arranging reflecting plate size, the relative position of radiation cell array, the form of isolator, arrangement mode and position, can change radiated wave and reflection wave trajectory, the final superimposed field that changes, effectively reduce the mutual coupling between each port, play and improve isolation between antennas, cross polarization ratio and the constringent effect of wave beam.In addition, because this isolator is axisymmetric about radiation cell array center, therefore can not cause the CURRENT DISTRIBUTION of radiating element in the horizontal direction or in vertical direction asymmetric, cause antenna directivity to reduce.Described feeding network and transmission device are positioned over the reflecting plate back side, facilitate cable coiling, and integral layout is succinct, attractive in appearance.Described reflecting plate and isolator can effectively improve isolation between antennas, cross polarization than and horizontal plane beamwidth convergence, so the design has the electric property being equal to conventional antenna, has advantages of that simple for structure, stable performance, cost are low simultaneously.
Accompanying drawing explanation
Fig. 1 is the utility model multifrequency dual polarization electrical tilt antenna vertical view;
Fig. 2 is the utility model multifrequency dual polarization electrical tilt antenna upward view;
Fig. 3 is the utility model multifrequency dual polarization electrical tilt antenna the first isolator schematic diagram;
Fig. 4 is the utility model multifrequency dual polarization electrical tilt antenna the second isolator schematic diagram;
Fig. 5 is the utility model multifrequency dual polarization electrical tilt antenna the 3rd isolator schematic diagram.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The purpose of this utility model is to provide a kind of multifrequency dual polarization electrical tilt antenna, object is effectively to reduce the mutual coupling between each port, play and improve isolation between antennas, cross polarization ratio and the constringent effect of wave beam, avoid the CURRENT DISTRIBUTION of radiating element in the horizontal direction or in vertical direction asymmetric, improve antenna directivity.
In multifrequency antenna, the radiating element of each frequency range distance is very near, and mutual coupling is serious to each other, causes the isolation between different port poor, and cross polarization ratio and horizontal plane beamwidth are also poor because of spatial limitation.Once conceptual design is unreasonable, debug so isolation and probably can make directional diagram index variation, especially cross polarization is compared and horizontal plane beamwidth, so the isolation between different port, cross polarization ratio and horizontal plane beamwidth are the key problems that needs solution in multifrequency dual polarized antenna conceptual design.
In conjunction with diagram 1~5 explanation, the purpose of this utility model is to provide a kind of multifrequency dual polarization electrical tilt antenna, comprising:
Reflecting plate 1, radiating element, isolator, feeding network 41,42,43, transmission device 51,52,53 and outer cover (not shown), reflecting plate 1 front is provided with described radiating element and described isolator, be provided with overleaf described feeding network, described transmission device, described transmission device is flexibly connected with described feeding network; The front of reflecting plate 1 is vertically arranged with at least two row radiating elements, and comprise high frequency radiation cell array, low frequency radiation cell array, at the intersection point place of the axis of described low frequency radiation cell array 21 and the center line of high frequency radiation cell array 22, be provided with the first isolator 31, the second isolator 32, the three isolators 33 are arranged between described high frequency radiation cell array and described low frequency radiation cell array.The first isolator 31, the second isolator 32 set gradually described high frequency radiation cell array are separated.
As depicted in figs. 1 and 2, be a kind of preferred embodiment of described multifrequency dual polarization electrical tilt antenna.The two bottom sides that is positioned at reflecting plate 1 is provided with described high frequency radiation cell array 22,23, and low frequency radiation cell array 21 is by the hole of bottom, is screwed on the longitudinal central axis line in 11 fronts, bottom of reflecting plate 1.High frequency radiation cell array 22,23 is respectively by the hole of bottom, be screwed in 11 fronts, bottom of reflecting plate 1 longitudinally, two arrays are symmetrical about the longitudinal central axis line of the bottom 11 of reflecting plate 1.
The first decoupling 31 devices comprise bonding jumper 311, support 312, and the vertical sectional shape of bonding jumper 311 comprises arch, opening rectangle, and bonding jumper 311 length are 0.2~1 times of reflecting plate 1 width; The second isolator 32 is sheet metal, and described sheet metal shape comprises that chamfering is trapezoidal, rectangle.Particularly, in the front of reflecting plate 1, between high frequency radiation cell array 22, be provided with the first isolator 31, the second isolator 32.The first isolator 31 is comprised of the support 312 of bonding jumper 311 and plastics, and bonding jumper 311 cross sections can be the shapes such as circle, square, rhombus, are more preferably sectional dimension 1~6mm; Longitudinal section can be the shapes such as arch, opening rectangle, and length is 0.2~1 times of reflecting plate 1 width.Further, the 3rd isolator 33 is arranged at the both sides of low frequency radiation cell array 21.
The second isolator 32 is arranged at the axis of low frequency radiation cell array array 21, and the first isolator 31 is positioned at the midline of high frequency radiation cell array 22.The bonding jumper 311 of the first isolator 31 is positioned over and supports on 312, and support 312 is buckled in the bottom of reflecting plate 1.The second isolator 32 is sheet metal, and the height of described the second isolator 32 is 0.5~1.5 times of described high frequency radiation cell array 22 height.
Be more preferably, the shape of cross section of described the 3rd isolator 33 is that doubling is an angle of 90 degrees, and is highly 0.25~0.75 times of described low frequency radiation unit 21 height, and length is identical with the length of described high frequency radiation cell array 22.
Further, low frequency radiation cell array 21 connects described feeding network 41,42,43 by coaxial cable respectively, described feeding network 41,42,43 connection for transmission devices 51,52,53, described transmission device 51,52,53 drives described feeding network 41,42,43 along described reflecting plate 1 longitudinal sliding motion.
Figure 4 shows that a kind of preferred embodiment of the second isolator 32.The height of the second isolator 32 is chosen the suitable isolation of high frequency radiation cell array 22, high frequency radiation cell array 23 that can make and is significantly improved, and very little on the impact of low frequency radiation cell array 21 arrays.The second isolator 32 is sheet metal, and it is trapezoidal that its shape can be chamfering, rectangle etc.; It is highly 0.5~1.5 times of low frequency radiation cell array height.The isolator of these two kinds of forms is spaced, and arranging of the described isolator between the setting of the described isolator between high frequency radiation cell array 23 and high frequency radiation cell array 22 is identical.
Front at reflecting plate 1, the both sides of low frequency radiation cell array 21 are respectively arranged with the 3rd isolator 33, it is 90 degree that its sheet metal is shaped as doubling, is highly 0.25~0.75 times of high frequency radiation cell array 22 height, and length is identical with the length of high frequency radiation cell array 22.
Low frequency radiation cell array 21, high frequency radiation cell array 22, high frequency radiation cell array 23 are connected with feeding network 41,42,43 separately by coaxial cable respectively, feeding network 41,42,43 is connected with transmission device 51,52,53 respectively, the longitudinal sliding motion being driven along reflecting plate 1 by transmission device 51,52,53, thus realize phase shift.Feeding network 41,42,43 and transmission device 51,52,53 are all arranged at the back side of reflecting plate 1, and complete machine layout is succinct, attractive in appearance.
Figure 3 shows that a kind of preferred embodiment of the first isolator 31.The bonding jumper 311 of arch is positioned over and supports on 312, and support 312 is buckled in the bottom of reflecting plate 1.The position of bonding jumper 311 is different, also different on the impact of antenna performance.When the bonding jumper 311 of arch is in low frequency radiation cell array 21 center, in the time of on center line between high frequency radiation unit 22 or 23, in conjunction with supporting 312, not only can play the effect that improves isolation, also can, by affecting electromagnetic phase place and the amplitude of two polarization, the main shaft of antenna pattern and ± 60 ° of cross-polarization performance be all improved.
Figure 5 shows that a kind of preferred embodiment of the 3rd isolator 33.The height of the 3rd isolator 33 directly affects main shaft cross polarization ratio, the high frequency radiation cell array 22 of described low frequency radiation cell array 21, the horizontal plane beamwidth of high frequency radiation cell array 23, when the height of the 3rd isolator 33, choose suitable time, can also play the effect of the gain that improves high frequency radiation cell array.
In sum, the utility model is by arranging reflecting plate size, the relative position of radiation cell array, the form of isolator, arrangement mode and position, can change radiated wave and reflection wave trajectory, the final superimposed field that changes, effectively reduce the mutual coupling between each port, play and improve isolation between antennas, cross polarization ratio and the constringent effect of wave beam.In addition, because this isolator is axisymmetric about radiation cell array center, therefore can not cause the CURRENT DISTRIBUTION of radiating element in the horizontal direction or in vertical direction asymmetric, cause antenna directivity to reduce.Described feeding network and transmission device are positioned over the reflecting plate back side, facilitate cable coiling, and integral layout is succinct, attractive in appearance.Described reflecting plate and isolator can effectively improve isolation between antennas, cross polarization than and horizontal plane beamwidth convergence, so the design has the electric property being equal to conventional antenna, has advantages of that simple for structure, stable performance, cost are low simultaneously.
Certainly; the utility model also can have other various embodiments; in the situation that not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.

Claims (7)

1. a multifrequency dual polarization electrical tilt antenna, is characterized in that, comprising:
Reflecting plate, radiating element, isolator, feeding network, transmission device and outer cover, described reflecting plate front is provided with described radiating element and described isolator, be provided with overleaf described feeding network, described transmission device, described transmission device is flexibly connected with described feeding network; The front of described reflecting plate is vertically arranged with at least two row radiating elements, and comprise high frequency radiation cell array, low frequency radiation cell array, intersection point place at the axis of described low frequency radiation cell array and the center line of described high frequency radiation unit is provided with the first isolator, the second isolator, and the 3rd isolator is arranged between described high frequency radiation cell array and described low frequency radiation cell array.
2. multifrequency dual polarization electrical tilt antenna according to claim 1, is characterized in that,
The two bottom sides that is positioned at described reflecting plate is provided with described high frequency radiation cell array, and described low frequency radiation cell array is fixed on the longitudinal central axis line in front, bottom of described reflecting plate;
Described the first isolator comprises bonding jumper, support, and the vertical sectional shape of described bonding jumper comprises arch, opening rectangle, and described bonding jumper length is 0.2~1 times of described reflecting plate width; And/or
Described the second isolator is sheet metal, and described sheet metal shape comprises that chamfering is trapezoidal, rectangle; And/or
Described the 3rd isolator is arranged at the both sides of described low frequency radiation cell array.
3. multifrequency dual polarization electrical tilt antenna according to claim 2, is characterized in that, described the second isolator is arranged at the axis of described low frequency radiation cell array, and described the first isolator is positioned at the midline of described high frequency radiation unit.
4. multifrequency dual polarization electrical tilt antenna according to claim 2, is characterized in that, the described bonding jumper of described the first isolator is positioned in described support, and described support card is connected on the bottom of described reflecting plate.
5. multifrequency dual polarization electrical tilt antenna according to claim 2, is characterized in that, the height of described the second isolator is 0.5~1.5 times of described high frequency radiation cell height.
6. multifrequency dual polarization electrical tilt antenna according to claim 2, it is characterized in that, the shape of cross section of described the 3rd isolator is that doubling is an angle of 90 degrees, and is highly 0.25~0.75 times of described low frequency radiation cell height, and length is identical with the length of described high frequency radiation cell array.
7. multifrequency dual polarization electrical tilt antenna according to claim 1, it is characterized in that, described radiating element connects described feeding network by coaxial cable respectively, described feeding network connection for transmission device, and described transmission device drives described feeding network along described reflecting plate longitudinal sliding motion.
CN201420301500.4U 2014-06-06 2014-06-06 Multi-frequency dual polarization electrically-regulated antenna Active CN203910978U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106207456A (en) * 2016-08-22 2016-12-07 广东通宇通讯股份有限公司 A kind of multifrequency antenna
CN107834177A (en) * 2017-11-20 2018-03-23 北京航空航天大学 A kind of extensive MIMO base station antenna of high-isolation with coupling unit
CN108028462A (en) * 2015-11-25 2018-05-11 康普技术有限责任公司 Phased-array antenna with decoupling unit
CN111063995A (en) * 2019-12-31 2020-04-24 京信通信技术(广州)有限公司 Antenna applied to tunnel
CN111129767A (en) * 2018-10-31 2020-05-08 南宁富桂精密工业有限公司 Dual-frequency antenna structure
CN111668605A (en) * 2020-07-02 2020-09-15 武汉虹信通信技术有限责任公司 Electrically-controlled antenna used along high-speed rail
CN112736470A (en) * 2020-12-01 2021-04-30 武汉虹信科技发展有限责任公司 Multi-frequency array antenna and base station
CN112909583A (en) * 2021-02-05 2021-06-04 武汉虹信科技发展有限责任公司 Multi-system integrated antenna

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108028462A (en) * 2015-11-25 2018-05-11 康普技术有限责任公司 Phased-array antenna with decoupling unit
CN106207456A (en) * 2016-08-22 2016-12-07 广东通宇通讯股份有限公司 A kind of multifrequency antenna
CN107834177A (en) * 2017-11-20 2018-03-23 北京航空航天大学 A kind of extensive MIMO base station antenna of high-isolation with coupling unit
CN111129767A (en) * 2018-10-31 2020-05-08 南宁富桂精密工业有限公司 Dual-frequency antenna structure
CN111129767B (en) * 2018-10-31 2021-08-31 南宁富桂精密工业有限公司 Dual-frequency antenna structure
US11189916B2 (en) 2018-10-31 2021-11-30 Nanning Fugui Precision Industrial Co., Ltd. Double-frequency antenna structure with high isolation
CN111063995A (en) * 2019-12-31 2020-04-24 京信通信技术(广州)有限公司 Antenna applied to tunnel
CN111668605A (en) * 2020-07-02 2020-09-15 武汉虹信通信技术有限责任公司 Electrically-controlled antenna used along high-speed rail
CN111668605B (en) * 2020-07-02 2021-07-09 中信科移动通信技术股份有限公司 Electrically-controlled antenna used along high-speed rail
CN112736470A (en) * 2020-12-01 2021-04-30 武汉虹信科技发展有限责任公司 Multi-frequency array antenna and base station
CN112909583A (en) * 2021-02-05 2021-06-04 武汉虹信科技发展有限责任公司 Multi-system integrated antenna

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