CN105356062A - Broadband array antenna - Google Patents

Broadband array antenna Download PDF

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Publication number
CN105356062A
CN105356062A CN201510705631.8A CN201510705631A CN105356062A CN 105356062 A CN105356062 A CN 105356062A CN 201510705631 A CN201510705631 A CN 201510705631A CN 105356062 A CN105356062 A CN 105356062A
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CN
China
Prior art keywords
horizontal
array antenna
subarray
network
subsystem
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Granted
Application number
CN201510705631.8A
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Chinese (zh)
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CN105356062B (en
Inventor
吴泽海
吴壁群
苏振华
叶亮华
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Guangdong Broadradio Communication Technology Co Ltd
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Guangdong Broadradio Communication Technology Co Ltd
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Priority to CN201510705631.8A priority Critical patent/CN105356062B/en
Publication of CN105356062A publication Critical patent/CN105356062A/en
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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/24Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/50Structural association of antennas with earthing switches, lead-in devices or lightning protectors

Abstract

The invention relates to a broadband array antenna, comprising a metal reflector plate, a radiating element array and a feed network mounted on the metal reflector plate, wherein the radiating element array comprises subsystems at different frequency bands, and five vibrators of each subsystem in the horizontal direction are connected with a horizontal power network distribution network. The broadband array antenna has high-speed beam convergence capability in the horizontal direction, has the angle of power drop from 3dB to 20dB being less than 25 degrees, and further has sidelobe level suppression superior to 20dB. The broadband array antenna is flexible in structure and can configure parameters such as spacing, amplitude and phase according to the actual application requirement. With adoption of the structure disclosed by the invention, interference of adjacent cells in hot spot regions such as stadiums can be suppressed, frequency complex of adjacent cells can be achieved and network capacity can be improved. The broadband array antenna is compatible with multiple mobile communication systems such as 2G, 3G and 4G LTE, thereby reducing the number of antennae used in base stations, lowering cost of station distribution, and further reducing the cost of operation maintenance.

Description

A kind of wideband array antenna
Technical field
The present invention relates to the communications field, be specifically related to a kind of wideband array antenna.
Background technology
After the commercialization of forth generation mobile communication technology 4G/LTE scale, mobile Internet is fast-developing, smart mobile phone and panel computer more and more universal, the data traffic of mobile communication presents explosive growth.The hot spot region that mobile communication subscriber is intensive, comprise large-scale stadium, performing art centre, conference and exhibition center, high ferro station, terminal and Citizen Square etc., existing mobile communications network has been difficult to meet the real-time network traffic demand of high speed, and the technical schemes such as traditional increase carrier wave are also difficult to the network capacity issues solving high data traffic region.
Open venue people current density is large, and telephone traffic is high, and operational frequency resource is quite limited again, therefore needs to adopt a large amount of channelings to reach optimum capacity.In order to meet network capacity requirements, the more community of the Communication Highlights regional plannings such as large stadium covers.
Traditional solution uses the antenna that overlay area is circle to carry out multiple cell covering, and as shown in Figure 1,3dB to 20dB power drop angle is greater than 60 degree to directional diagram, declines slowly.Adopt the system of this antenna, overlapping region, neighbor cell is comparatively large, and interference is large, has a strong impact on the transmission rate of communication system, and the message capacity for system promotes limited.Thus be necessary, for above problem, to develop a kind of wide frequency antenna, under the prerequisite in ensuring coverage region, by the interference of the neighbor cell of beam converges reduction fast, improve the message capacity of the hot spot regions such as venue.
Summary of the invention
The object of the invention is to, overcome the defect existed in prior art, a kind of wideband array antenna is provided, its horizontal directivity pattern is rectangle figuration, with the adjacent area reducing the hot spot regions such as large stadium, overlapping and interference, realizes adjacent cell frequencies multiplexing, improves network capacity.
For achieving the above object, the present invention is by the following technical solutions:
A kind of wideband array antenna, comprises metallic reflection plate, is arranged on the feeding network on metallic reflection plate and radiation cell array;
Described radiation cell array comprises the subarray of at least one horizontal direction, and each subarray comprises multiple oscillator, arranges in the horizontal direction;
The horizontal radiation pattern of described wideband array antenna is rectangle, amplitude stabilization within the scope of main beam direction 3dB and have the crest of at least 2, and main beam scope declines fast with external power, and 3dB to 20dB power drop angle is less than 25 degree.
Further, the subarray of described horizontal direction arrangement is made up of 5 oscillators.
Further, multiple oscillators of described every a line subarray arrange along a horizontal reference line; Not overlapping between the reference line that each subarray described is corresponding.
Further, described horizontal direction subarray element spacing is equal.
Further, described multiple horizontal subarray vertically arranges, and the vertical interval of subarray is equal.
Further, described feeding network comprises horizontal power distribution network and divides with vertical merit and shift to network; Described subarray is connected with the output port of horizontal power distribution network, and the input port of horizontal power distribution network and vertical merit divide phase-shift network output port to be connected.
Further, oscillator horizontal-direction pitch is equal, is array level interval; The spacing of the vertical direction of oscillator is equal, is array vertical interval; Described array vertical interval is more than or equal to array level interval.
Further, described oscillator comprises the match circuit between radiation arm and connection radiation arm; Described match circuit is installed vertically on horizontal power distribution network; Described horizontal power distribution network is fixed on metallic reflection plate.
Further, described radiation cell array comprises 25 oscillators, and horizontal power distribution network and vertical merit divide phase-shift network to form a subsystem.
Further, the number of described subsystem is multiple, described subsystem work in low-frequency range, Mid Frequency and high band three kinds; Described low-frequency sub-system works in 698-960MHz band limits, and described Mid Frequency subsystem work is at 1710-2200MHz band limits, and described high band subsystem work is in 2300-2700MHz band limits.The subsystem of different frequency range carries out signal by mixer and closes road, with shared output port.
Adopt structure of the present invention, wide-band array antenna can be kept in ultra wide band range to have beam converges ability faster, reduce the adjacent area interference of the hot spot regions such as venue, realize the channeling of neighbor cell, improve network capacity.2G in array antenna compatible mobile communication of the present invention, 3G and 4GLTE multiple types, not only can reduce base station number of antennas used, reduces cloth station cost, also can reduce operation maintenance expense.Meanwhile, structure of the present invention also can be used on the boundary line of exigent countries and regions, boundary line, overlay area, and high degree reduces the signal disturbing outside boundary line.
Accompanying drawing explanation
Fig. 1 is a kind of broad-band antenna array horizontal radiation pattern of the prior art;
Fig. 2 is the rectangle figuration horizontal plane radiation pattern of the broad-band antenna array that the present invention realizes;
The structural representation of a kind of one-segment array antenna that Fig. 3 provides for the embodiment of the present invention one;
Fig. 4 is the antenna pattern in the embodiment of the present invention one;
The structural representation of a kind of dual-band array antenna that Fig. 5 provides for the embodiment of the present invention two;
The structural representation of a kind of three frequency range array antennas that Fig. 6 provides for the embodiment of the present invention three;
The antenna pattern of a kind of array antenna that Fig. 7 provides for the embodiment of the present invention four.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, technical scheme of the present invention is described in detail.
Embodiment one
As shown in Figures 2 and 3, a kind of wide-band array antenna that the embodiment of the present invention provides, comprises metallic reflection plate, and is arranged on the horizontal power distribution network on metallic reflection plate, be fixed on the oscillator on horizontal power distribution network, and vertical merit divides phase-shift network.
Described radiation cell array comprises the subarray of at least one horizontal direction, and each subarray comprises multiple oscillator, arranges in the horizontal direction;
The horizontal radiation pattern of described wideband array antenna is rectangle, amplitude stabilization within the scope of main beam direction 3dB and have the crest of at least 2, and main beam scope declines fast with external power, and 3dB to 20dB power drop angle is less than 25 degree.
Preferably, described radiation cell array is made up of 25 dual polarization vibrators 101, and described 25 oscillators are divided into 5 subarrays, and each subarray comprises the oscillator that 5 are positioned at horizontal direction; 5 oscillators of described subarray arrange along a horizontal reference line, and oscillator level interval is d1; The center of described multiple subarray arranges along a vertical reference line, and vertical interval is d2.
5 oscillators of described subarray are connected with horizontal power distribution network 102, and form a sub antenna, each sub antenna and vertical merit divide phase-shift network 103 to be connected, and form a dual-polarized array antenna; Vertical power distribution network uses continuous phase regulating networks, can regulate the beam position of vertical direction.
Preferably, oscillator level interval is equal with vertical interval, i.e. d1=d2, and numerical value is the half wavelength of operating frequency; Preferably, vertical merit divides the distribution of the amplitude-phase of phase-shift network consistent with horizontal direction.The directional diagram of array antenna as shown in Figure 4.Namely vertical direction and horizontal direction antenna pattern close, in middle slight depression, both sides protuberance rectangle figuration shape.Described rectangle Oriented Graphics with Assigned Form has the crest of continuous 2 at main lobe direction, and direction amplitude declines very fast beyond main lobe.The centre frequency 3dB beamwidth of described subsystem is 50 degree, and 20dB beamwidth is 85 degree, and in whole band limits, the angle of 3dB to 20dB power drop is less than 25 degree, and Sidelobe Suppression is better than 20dB.
Embodiment two
As shown in Figure 5, the embodiment of the present invention changes on the basis of embodiment one.
The embodiment of the present invention provides a two-band rectangle shaped aerial being operated in 1710-2200 and 2300-2700MHz.111,112 and 113 be operated in 2300-2700MHz frequency range ± 45 dual polarization vibrator unit respectively, horizontal power distribution network, and vertical merit divides phase-shift network, composition 2300-2700MHz frequency range subsystem; Described oscillator is identical with embodiment one with the connection of feeding network; Described oscillator level interval is D1H, and vertical interval is D1V.211,212 and 213 be operated in 1710-2200MHz frequency range ± 45 dual polarization vibrator unit respectively, horizontal power distribution network, and vertical merit divides phase-shift network, composition 1710-2200MHz frequency range subsystem; Described oscillator is identical with embodiment one with the connection of feeding network; Described oscillator level interval is D2H, and vertical interval is D2V.
+ 45 polarized signal E1 of described 2300-2700MHz subsystem and+45 polarized signal E3 of 1710-2200MHz subsystem are connected to mixer 115, form the output port F1 shared; Similar ,-45 polarized signal E2 of described 2300-2700MHz subsystem and-45 polarized signal E4 of 1710-2200MHz subsystem are connected to another block mixer 115, form the output port F2 shared; Described mixer working frequency range is 1710-2200 and 2300-2700MHz.
Preferably, the level interval D1H of subsystem 2300-2700MHz equals vertical interval D1V, and the level interval D2H of subsystem 1710-2200MHz equals vertical interval D2V.
Preferably, D1H and D1V is two point of one wavelength of 2300-2700MHz frequency range centre frequency 2500MHz, D2H and D2V is two point of one wavelength of 1710-2200MHz frequency range centre frequency 1950MHz.Preferably, described 2300-2700MHz subsystem horizontal power distribution network and vertical merit divide the Phase amplitude-matched of phase-shift network; Described 1710-2200MHz subsystem horizontal power distribution network and vertical merit divide the Phase amplitude-matched of phase-shift network.Directional diagram and Fig. 4 of the whole frequency range of 2300-2700 and 1710-2200MHz of subsystem are similar, and the 3dB ripple of the centre frequency of each subsystem wide is 50 degree, and 20dB beamwidth is 85 degree.3dB to 20dB power drop angle in described each subsystem frequency range is less than 25 degree, and Sidelobe Suppression is better than 20dB.
Other features in the embodiment of the present invention are identical with embodiment one, therefore do not repeat them here.
Embodiment three
As shown in Figure 6, a kind of three frequency range array antennas are embodiments provided.
116 dual-band antennas being embodiment two in figure, working frequency range is respectively 1710-2200 and 2300-2700MHz.311,312 and 313 are operated in 698-960MHz frequency range ± 45 dual polarization vibrator, and horizontal power distribution network and vertical merit divide phase shifter network.Described dual polarization vibrator is identical with embodiment one with the connection of feeding network; Described oscillator level interval is D3H, and vertical interval is D3V.+ 45 polarized signal F3 of described 698-960MHz subsystem and+45 polarized signal F1 of 1710-2200/2300-2700MHz two-band system are connected to mixer 107, form the output port G1 shared; Similar ,-45 polarized signal F4 of described 698-960MHz subsystem and-45 polarized signal F2 of 1710-2200/2300-2700MHz two-band system are connected to another block mixer 107, form the output port G2 shared; Described mixer 107 working frequency range is 698-960 and 1700-2700MHz.
Preferably, D3H and D3V is two point of one wavelength of the centre frequency 790MHz of 698-960MHz frequency range.
Preferably, described 698-960MHz subsystem horizontal power distribution network and vertical merit divide the Phase amplitude-matched of phase-shift network.Three subsystem 698-960 of the present embodiment, directional diagram and Fig. 4 of the whole frequency range of 1710-2200 and 2300-2700MHz are similar, and the 3dB ripple of the centre frequency of each subsystem wide is 50 degree, and 20dB beamwidth is 85 degree.3dB to 20dB power drop angle in described each subsystem frequency range is less than 25 degree, and Sidelobe Suppression is better than 20dB.
Other features in the embodiment of the present invention are identical with embodiment one, therefore do not repeat them here.
Embodiment four
The present embodiment realizes directional diagram as shown in Figure 7, and horizontal plane is rectangular orientation figure figuration, and vertical plane is the wave beam forming of conventional aerial.The connection of the present embodiment is identical with embodiment one; Adopt the amplitude-phase distribution power division network with rectangle figuration unlike, horizontal plane with embodiment one, the merit of vertical plane divides the width Entropy density deviation of phase-shift network then similar with conventional basestation antennas, and main beam direction only has a crest.This embodiment is applicable to the extra high macro base station of cell boarder requirement, and the movable signal on the boundary line such as between country covers.Similar with embodiment three, different frequency range subsystem subregion arrangement can be adopted, to realize the quorum sensing inhibitor to 4G/3G/2G different communication standard.
Preferably, the subsystem of the different frequency range of the present embodiment does not use mixer to carry out signal and closes road.
It is emphasized that in above 4 embodiments, in each subsystem array, the spacing between adjacent two oscillators of horizontal direction is fixing, and namely oscillator unit is equidistantly arrangement.But in practical engineering application, oscillator unit also can be unequal-interval arrangement.Same, the spacing between two oscillators in vertical direction also can be unequal-interval arrangement.In an embodiment, the center of every a line oscillator is along a vertical line arrangement, and in actual applications, often the center of row oscillator also can be left and right skew.Same, in an embodiment, the center of each row oscillator is that in actual applications, often the center of row oscillator also can be downward shift along a horizontal linear arrangement.The spacing of this oscillator changes staggered situation, also can realize the optimization with rectangle Oriented Graphics with Assigned Form, owing to not departing from design of the present invention, also within protection scope of the present invention.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively 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 the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.

Claims (10)

1. a wideband array antenna, is characterized in that: comprise metallic reflection plate, is arranged on the feeding network on metallic reflection plate and radiation cell array;
Described radiation cell array comprises the subarray of at least one horizontal direction, and each subarray comprises multiple oscillator, arranges in the horizontal direction;
The horizontal radiation pattern of described wideband array antenna is rectangle, amplitude stabilization within the scope of main beam direction 3dB and have the crest of at least 2, and main beam scope declines fast with external power, and 3dB to 20dB power drop angle is less than 25 degree.
2. wideband array antenna according to claim 1, is characterized in that: the subarray of described horizontal direction arrangement is made up of 5 oscillators.
3. wideband array antenna according to claim 1, is characterized in that: multiple oscillators of described every a line subarray arrange along a horizontal reference line; Not overlapping between the reference line that each subarray described is corresponding.
4. wideband array antenna according to claim 1, is characterized in that: described horizontal direction subarray element spacing is equal.
5. wideband array antenna according to claim 1, is characterized in that: described multiple horizontal subarray vertically arranges, and the vertical interval of subarray is equal.
6. wideband array antenna according to claim 1, is characterized in that: described feeding network comprises horizontal power distribution network and divides with vertical merit and shift to network; Described subarray is connected with the output port of horizontal power distribution network, and the input port of horizontal power distribution network and vertical merit divide phase-shift network output port to be connected.
7. wideband array antenna according to claim 1, is characterized in that: oscillator horizontal-direction pitch is equal, is array level interval; The spacing of the vertical direction of oscillator is equal, is array vertical interval; Described array vertical interval is more than or equal to array level interval.
8. wideband array antenna according to claim 2, is characterized in that: the match circuit that described oscillator comprises radiation arm and connects between radiation arm; Described match circuit is installed vertically on horizontal power distribution network; Described horizontal power distribution network is fixed on metallic reflection plate.
9. wideband array antenna according to claim 6, is characterized in that: described radiation cell array comprises 25 oscillators, and horizontal power distribution network and vertical merit divide phase-shift network to form a subsystem.
10. wideband array antenna according to claim 9, is characterized in that: the number of described subsystem is multiple, described subsystem work in low-frequency range, Mid Frequency and high band three kinds; Described low-frequency sub-system works in 698 ~ 960MHz band limits, described Mid Frequency subsystem work is at 1710-2200MHz band limits, described high band subsystem work is in 2300 ~ 2700MHz band limits, the subsystem of different frequency range carries out signal by mixer and closes road, with shared output port.
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CN106848603A (en) * 2017-01-23 2017-06-13 武汉虹信通信技术有限责任公司 A kind of multifrequency antenna array of low-and high-frequency combination
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CN107508606A (en) * 2017-07-25 2017-12-22 广东欧珀移动通信有限公司 Radio circuit, antenna assembly and electronic equipment
CN108712749A (en) * 2018-05-18 2018-10-26 清华大学 A kind of straits mobile broadband covering method and system
CN108832956A (en) * 2018-06-29 2018-11-16 华为技术有限公司 A kind of signal receiving/transmission device and antenna equipment
CN110165380A (en) * 2019-06-05 2019-08-23 中天宽带技术有限公司 A kind of antenna for base station that multifrequency is shared

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Publication number Priority date Publication date Assignee Title
CN106159465A (en) * 2016-09-05 2016-11-23 广东博纬通信科技有限公司 Wideband five beam array antenna
CN106159465B (en) * 2016-09-05 2019-08-02 广东博纬通信科技有限公司 Five beam array antenna of wideband
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CN106848603A (en) * 2017-01-23 2017-06-13 武汉虹信通信技术有限责任公司 A kind of multifrequency antenna array of low-and high-frequency combination
CN107332573A (en) * 2017-07-25 2017-11-07 广东欧珀移动通信有限公司 A kind of radio circuit, antenna assembly and electronic equipment
CN107508606A (en) * 2017-07-25 2017-12-22 广东欧珀移动通信有限公司 Radio circuit, antenna assembly and electronic equipment
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CN108712749A (en) * 2018-05-18 2018-10-26 清华大学 A kind of straits mobile broadband covering method and system
CN108712749B (en) * 2018-05-18 2020-10-02 清华大学 Method and system for covering strait mobile broadband
CN108832956A (en) * 2018-06-29 2018-11-16 华为技术有限公司 A kind of signal receiving/transmission device and antenna equipment
CN110165380A (en) * 2019-06-05 2019-08-23 中天宽带技术有限公司 A kind of antenna for base station that multifrequency is shared

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