CN202474227U - Dual-polarized tri-beam antenna for mobile communication base station - Google Patents

Dual-polarized tri-beam antenna for mobile communication base station Download PDF

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Publication number
CN202474227U
CN202474227U CN2012201154060U CN201220115406U CN202474227U CN 202474227 U CN202474227 U CN 202474227U CN 2012201154060 U CN2012201154060 U CN 2012201154060U CN 201220115406 U CN201220115406 U CN 201220115406U CN 202474227 U CN202474227 U CN 202474227U
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port
power
antenna
blender
output port
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吴壁群
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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Abstract

The utility model relates to a dual-polarized tri-beam antenna for a mobile communication base station. The dual-polarized tri-beam antenna comprises a metal floorboard, a linear antenna array with at least three parallel columns, at least three first power dividers, at least three second power dividers, a first Butler matrix feed network and a second Butler matrix feed network, wherein each column of the linear antenna array consists of at least two antenna radiation units which are the same. By the antenna structure, three dual-polarized beams in fixed directions can be formed in a horizontal direction, a single dual-polarized beam in a fixed direction can be formed in a perpendicular direction, and interference between the three beams in the horizontal direction is low. The tri-beam antenna manufactured according to the technical scheme has a good anti-interference effect, stable performance and high signal capacity, and is easy to mount, cost can be effectively lowered, and the requirements of a user can be well met.

Description

A kind of dual polarization three beam antennas that are used for the mobile communication base station
Technical field
The utility model relates to wireless communication field, particularly a kind of dual polarization three beam antennas that are used for the mobile communication base station.
Background technology
The rapid increase with the mobile communication business amount that develops rapidly along with mobile communication technology; The overlay area of mobile communications network is constantly enlarging and perfect, correspondingly becomes more and more important along with the construction of mobile communications network as the antenna for base station of one of GSM critical component.
Traditional antenna for base station is to communicate through produce a fixing broad beam in the overlay area, owing to being easy to generate to disturb message capacity is reduced like this.
The utility model content
In view of this, be necessary a kind of anti-interference effective dual polarization that is used for the mobile communication base station three beam antennas to be provided to the problems referred to above.
For achieving the above object, the utility model adopts following technical scheme:
A kind of dual polarization three beam antennas that are used for the mobile communication base station; It is characterized in that: comprise the collinear array that metal floor, at least 3 row are parallel to each other, at least 3 first power splitters, at least 3 second power splitters, the first butler matrix feeding network, the second butler matrix feeding network; The quantity of first power splitter equates with the columns of collinear array; The quantity of second power splitter equates with the columns of collinear array; Collinear array is arranged on the upper surface of metal floor, and first power splitter and second power splitter are arranged on the lower surface of metal floor;
Every row collinear array is made up of at least 2 identical antenna radiation units; Each antenna radiation unit is made up of the antenna element of antenna element and 1-45 degree polarization mode of 1+45 degree polarization modes, and+antenna element square crossing that the antenna element and-45 of 45 degree polarization modes is spent polarization modes combines;
Each input port of the first butler matrix feeding network is connected with signal input cable, and each output port of the first butler matrix feeding network electrically connects with the synthetic port of the power of each first power splitter respectively; Each input port of the second butler matrix feeding network is connected with signal input cable, and each output port of the second butler matrix feeding network electrically connects with the synthetic port of the power of each second power splitter respectively;
In the quantity of the power division port of each first power splitter and the every row collinear array+number of the antenna element of 45 degree polarization modes equates, the number that-45 in the quantity of the power division port of each second power splitter and the every row collinear array spent the antenna element of polarization modes equates;
Each power division port of each first power splitter respectively with same row collinear array in+antenna element of 45 degree polarization modes electrically connects; Each power division port of each second power splitter respectively with same row collinear array in the antenna element of-45 degree polarization modes electrically connect.
First power splitter is identical with the structure of second power splitter; The distribution power magnitude of each power division port of each power splitter is identical; Each adjacent power of each power splitter distributes the distribution power of port to have identical phase difference, makes the antenna height pattern that an identical inclination angle arranged.
Said inclination angle is top rade or angle of declination, the span of top rade be 0 spend to 40 the degree, the span of angle of declination be 0 spend to 40 the degree.
The distance of adjacent two row collinear arrays is 0.3 λ-1.5 λ, and the distance of adjacent antenna radiating element is 0.3 λ-1.5 λ in every row collinear array.
Each collinear array is parallel to each other, and aligns each other in the two ends of all collinear arrays.
Each collinear array is parallel to each other, and the two ends of all odd columns align each other, aligns each other in the two ends of all even columns.
The structure of the first butler matrix feeding network and the second butler matrix feeding network is identical; When the columns of collinear array equals 3; Each butler matrix feeding network is made up of 1 three road butler matrix; Isolate each other between each input port of three road butler matrixs, each input port of three road butler matrixs is as the input port of butler matrix feeding network, and each output port of three road butler matrixs is as the output port of butler matrix feeding network.
The structure of the first butler matrix feeding network and the second butler matrix feeding network is identical; When the columns of collinear array greater than 3 the time; Each butler matrix feeding network is made up of 1 three road butler matrix and 1 power divider network; Isolate each other between each input port of three road butler matrixs; Each output port of three road butler matrixs connects the input port of power divider network; The number of output ports of power divider network equates that with the columns of collinear array each input port of three road butler matrixs is as the input port of butler matrix feeding network, and each output port of power divider network is as the output port of butler matrix feeding network.
Three road butler matrixs are made up of first blender, second blender, the 3rd blender, first phase shifter, second phase shifter, the 3rd phase shifter;
Each blender comprises first input end mouth, second input port, first output port, second output port, and each phase shifter comprises an input port and an output port;
Two input ports of first blender, second input port of second blender are respectively as the input port of three road butler matrixs;
First output port of first blender is connected with the first input end mouth of the 3rd blender through first phase shifter; Second output port of first blender is connected with the first input end mouth of second blender, and first output port of second blender is connected with second input port of the 3rd blender;
The input port of second phase shifter is connected with first output port of the 3rd blender, and the input port of the 3rd phase shifter is connected with second output port of second blender;
Second output port of the output port of second phase shifter, the 3rd blender, the output port of the 3rd phase shifter are respectively as the output port of three road butler matrixs.
The antenna structure of the utility model can form the dual polarization wave beam of 3 fixed directional in the horizontal direction, forms the dual polarization wave beam of single fixed directional in vertical direction, and the interference between 3 wave beams of horizontal direction is little.According to three beam antennas that the technical scheme of the utility model is processed, anti-interference effective, stable performance, signal volume is big, is easy to install, and can effectively reduce cost, and meets consumers' demand well.
Description of drawings
Fig. 1 is the end view of the utility model general structure.
Fig. 2 is the vertical view of the utility model general structure.
Fig. 3 is the planar alignment sketch map of collinear array.
Fig. 4 is the sketch map of antenna radiation unit.
Fig. 5 is the sketch map of first power splitter.
Fig. 6 is the sketch map of second power splitter.
Fig. 7 and Fig. 8 are the sketch map of butler matrix feeding network.
Fig. 9 is the structural representation of three road butler matrixs.
Embodiment
See also Fig. 1 and Fig. 2; Dual polarization three beam antennas that the utility model is used for the mobile communication base station comprise collinear array 104 (Fig. 1 classifies example as with 5 to describe) that at least 3 row are parallel to each other, 103, at least 3 first power splitters 105 of metal floor (among Fig. 2 be that example describe with 5), at least 3 second power splitters 106 (among Fig. 2 be that example describe with 5), the first butler matrix feeding network 107, the second butler matrix feeding network 108; The quantity of first power splitter 105 equates with the columns of collinear array 104; The quantity of second power splitter 106 equates with the columns of collinear array 104; Collinear array 104 is arranged on the upper surface of metal floor 103, and first power splitter 105 and second power splitter 106 are arranged on the lower surface of metal floor 103.
See also Fig. 3, the distance of adjacent two row collinear arrays 104 is 0.3 λ-1.5 λ, and in the present embodiment, the distance of getting adjacent two row collinear arrays 104 is 0.5 λ.Every row collinear array 104 is made up of at least 2 (among Fig. 3 be that example describe with 6) identical antenna radiation units 203; And the distance of adjacent antenna radiating element 203 is 0.3 λ-1.5 λ in every row; The distance of in the present embodiment, getting adjacent antenna radiating element 203 in every row collinear array 104 is 0.8 λ.Wherein, λ representes the wavelength of centre frequency correspondence in air of antenna working frequency range.
The arrangement mode of each collinear array 104 has:
1, each collinear array is parallel to each other, and aligns each other in the two ends of all collinear arrays.
2, each collinear array is parallel to each other, and the two ends of all odd columns align each other, aligns each other in the two ends of all even columns.
See also Fig. 4; Each antenna radiation unit 203 is made up of with the antenna element 201 of 1-45 degree polarization mode the antenna element 202 of 1+45 degree polarization modes, and+antenna element 201 square crossings that the antenna element 202 and-45 of 45 degree polarization modes is spent polarization modes combine.
See also Fig. 5 and Fig. 6; Each first power splitter 105 has the synthetic port 402 of 1 power and several power division ports 403, in the quantity of the power division port 403 of each first power splitter 105 and the every row collinear array 104+45 spend the antenna element of polarization modes number equate (what adopt among Fig. 5 is one minute six power splitter); Each second power splitter 106 has the synthetic port 404 of 1 power and several power division ports 405, and the number that-45 in the quantity of the power division port 404 of each second power splitter 106 and the every row collinear array 104 spent the antenna element of polarization modes equates (what adopt among Fig. 6 is one minute six power splitter).The distribution power magnitude of each power division port 403 of each first power splitter 105 and each power division port 405 of second power splitter 106 and phase place can come to confirm according to the actual requirements.In the present embodiment, first power splitter 105 is identical with the structure of second power splitter 106.Particularly, the distribution power magnitude of each power division port of each power splitter is identical, and each adjacent power of each power splitter distributes the distribution power of port to have identical phase difference, makes the antenna height pattern that an identical inclination angle arranged.Said inclination angle is top rade or angle of declination; The span of top rade be 0 spend to 40 the degree, the span of angle of declination be 0 spend to 40 the degree.In the present embodiment, take off inclination angle 9 degree.
The structure of the first butler matrix feeding network 107 and the second butler matrix feeding network 108 is identical.When the columns of collinear array equaled 3, each butler matrix feeding network is made up of 1 three road butler matrix 602, and was as shown in Figure 7.Isolate each other between each input port of three road butler matrixs 602; Each input port of three road butler matrixs 602 is as the input port of butler matrix feeding network, and each output port of three road butler matrixs 602 is as the output port of butler matrix feeding network.
When the columns of collinear array greater than 3 the time, each butler matrix feeding network is made up of 1 three road butler matrix 602 and 1 power divider network 601, and is as shown in Figure 8.Isolate each other between the input port of three road butler matrixs 602, the output port of three road butler matrixs 602 connects the input port of power divider network 601, and the number of output ports of power divider network 601 is identical with the columns of collinear array 104.
Fig. 9 is the particular circuit configurations of three road butler matrixs 602.Three road butler matrixs 602 are made up of first blender 801, second blender 802, the 3rd blender 803, first phase shifter 804, second phase shifter 805, the 3rd phase shifter 806.Each blender comprises first input end mouth, second input port, first output port, second output port, and each phase shifter comprises an input port and an output port.
Two input ports of first blender 801, second input port of second blender 802 are respectively as the input port of three road butler matrixs.
First output port of first blender 801 is connected with the first input end mouth of the 3rd blender 803 through first phase shifter 804; Second output port of first blender 801 is connected with the first input end mouth of second blender 802, and first output port of second blender 802 is connected with second input port of the 3rd blender 803;
The input port of second phase shifter 805 is connected with first output port of the 3rd blender 803, and the input port of the 3rd phase shifter 806 is connected with second output port of second blender 802.
Second output port of the output port of second phase shifter 805, the 3rd blender 803, the output port of the 3rd phase shifter 806 are respectively as the output port of three road butler matrixs 602.
To sum up, the whole electrical connection of the utility model is following:
The first butler matrix feeding network 107 is connected with signal input cable with each input port of the second butler matrix feeding network 108, and each output port of the first butler matrix feeding network 107 electrically connects with the synthetic port 402 of the power of each first power splitter 105 respectively; Each output port of the second butler matrix feeding network 108 electrically connects with the synthetic port 404 of the power of each second power splitter 106 respectively.Each power division port 403 of each first power splitter 105 respectively with same row collinear array 104 in+antenna element 202 of 45 degree polarization modes electrically connects; Each power division port 405 of each second power splitter 106 respectively with same row collinear array 104 in the antenna element 201 of-45 degree polarization modes electrically connect.
During each input port feed of butler matrix feeding network, the signal phase of output port is different linear change.Therefore; During each input port feed of butler matrix feeding network, the radiation beam of antenna horizontal direction is pointed to different, wherein the wave beam that points to of input port 1 generation level 0 degree; The wave beam that input port 2 generation levels-40 degree points to, the wave beam that input port 3 generation levels+40 degree point to.
When 3 ports of the first butler matrix feeding network 107 simultaneously during feed, antenna generation level point to 0 degree, ± 40 degree, and at have a down dip 3+45 degree polarization wave beams of 9 degree of vertical direction; When 3 ports of the second butler matrix feeding network 108 simultaneously during feed, antenna generation level point to 0 degree, ± 40 degree, and at have a down dip 3-45 degree polarization wave beams of 9 degree of vertical direction.Therefore, when 6 ports of these two butler matrix feeding networks simultaneously during feed, antenna can produce 3 horizontal directivity patterns point to 0 degree, ± 40 degree and height pattern have that 9 degree have a down dip ± 45 spend dual-polarized 3 wave beams.
The antenna structure of the utility model can form the dual polarization wave beam of 3 fixed directional in the horizontal direction, forms the dual polarization wave beam of single fixed directional in vertical direction, and the interference between 3 wave beams of horizontal direction is little.According to three beam antennas that the technical scheme of the utility model is processed, stable performance, signal volume is big, is easy to install, and can effectively reduce cost, and meets consumers' demand well.
The above is the preferred embodiment of the utility model, and the scope of enforcement of the utility model and requirement protection is not limited to the scope of the foregoing description.All within the spirit and principle of the utility model, institute changes, is equal to replacement, improvement etc., all is included within the protection range of the utility model.The sensing and the beamwidth that it is emphasized that the wave beam of the utility model especially can adjust according to different demands; Through the columns of adjustment this programme cathetus antenna array, the distance between the adjacent two row collinear arrays, the radiating element number of every row collinear array, the distance between the adjacent radiation unit, the distribution power magnitude and the phase place of power splitter power division port, thereby the change of adjusting beam position and width is also within the utility model protection range.In addition, the quantity through the adjustment feed port change horizontal beam the change of quantity also within the utility model protection range.

Claims (9)

1. dual polarization three beam antennas that are used for the mobile communication base station; It is characterized in that: comprise the collinear array that metal floor, at least 3 row are parallel to each other, at least 3 first power splitters, at least 3 second power splitters, the first butler matrix feeding network, the second butler matrix feeding network; The quantity of first power splitter equates with the columns of collinear array; The quantity of second power splitter equates with the columns of collinear array; Collinear array is arranged on the upper surface of metal floor, and first power splitter and second power splitter are arranged on the lower surface of metal floor;
Every row collinear array is made up of at least 2 identical antenna radiation units; Each antenna radiation unit is made up of the antenna element of antenna element and 1-45 degree polarization mode of 1+45 degree polarization modes, and+antenna element square crossing that the antenna element and-45 of 45 degree polarization modes is spent polarization modes combines;
Each input port of the first butler matrix feeding network is connected with signal input cable, and each output port of the first butler matrix feeding network electrically connects with the synthetic port of the power of each first power splitter respectively; Each input port of the second butler matrix feeding network is connected with signal input cable, and each output port of the second butler matrix feeding network electrically connects with the synthetic port of the power of each second power splitter respectively;
In the quantity of the power division port of each first power splitter and the every row collinear array+number of the antenna element of 45 degree polarization modes equates, the number that-45 in the quantity of the power division port of each second power splitter and the every row collinear array spent the antenna element of polarization modes equates;
Each power division port of each first power splitter respectively with same row collinear array in+antenna element of 45 degree polarization modes electrically connects; Each power division port of each second power splitter respectively with same row collinear array in the antenna element of-45 degree polarization modes electrically connect.
2. dual polarization three beam antennas that are used for the mobile communication base station according to claim 1; It is characterized in that: first power splitter is identical with the structure of second power splitter; The distribution power magnitude of each power division port of each power splitter is identical; Each adjacent power of each power splitter distributes the distribution power of port to have identical phase difference, makes the antenna height pattern that an identical inclination angle arranged.
3. dual polarization three beam antennas that are used for the mobile communication base station according to claim 1, it is characterized in that: said inclination angle is top rade or angle of declination, the span of top rade be 0 spend to 40 the degree, the span of angle of declination be 0 spend to 40 the degree.
4. dual polarization three beam antennas that are used for the mobile communication base station according to claim 1 is characterized in that: the distance of adjacent two row collinear arrays is 0.3 λ-1.5 λ, and the distance of adjacent antenna radiating element is 0.3 λ-1.5 λ in every row collinear array.
5. dual polarization three beam antennas that are used for the mobile communication base station according to claim 1, it is characterized in that: each collinear array is parallel to each other, and aligns each other in the two ends of all collinear arrays.
6. dual polarization three beam antennas that are used for the mobile communication base station according to claim 1, it is characterized in that: each collinear array is parallel to each other, and the two ends of all odd columns align each other, and align each other in the two ends of all even columns.
7. dual polarization three beam antennas that are used for the mobile communication base station according to claim 1; It is characterized in that: the structure of the first butler matrix feeding network and the second butler matrix feeding network is identical; When the columns of collinear array equals 3; Each butler matrix feeding network is made up of 1 three road butler matrix; Isolate each other between each input port of three road butler matrixs, each input port of three road butler matrixs is as the input port of butler matrix feeding network, and each output port of three road butler matrixs is as the output port of butler matrix feeding network.
8. dual polarization three beam antennas that are used for the mobile communication base station according to claim 1; It is characterized in that: the structure of the first butler matrix feeding network and the second butler matrix feeding network is identical; When the columns of collinear array greater than 3 the time; Each butler matrix feeding network is made up of 1 three road butler matrix and 1 power divider network; Isolate each other between each input port of three road butler matrixs, each output port of three road butler matrixs connects the input port of power divider network, and the number of output ports of power divider network equates with the columns of collinear array; Each input port of three road butler matrixs is as the input port of butler matrix feeding network, and each output port of power divider network is as the output port of butler matrix feeding network.
9. according to claim 7 or 8 described dual polarization three beam antennas that are used for the mobile communication base station, it is characterized in that: three road butler matrixs are made up of first blender, second blender, the 3rd blender, first phase shifter, second phase shifter, the 3rd phase shifter;
Each blender comprises first input end mouth, second input port, first output port, second output port, and each phase shifter comprises an input port and an output port;
Two input ports of first blender, second input port of second blender are respectively as the input port of three road butler matrixs;
First output port of first blender is connected with the first input end mouth of the 3rd blender through first phase shifter; Second output port of first blender is connected with the first input end mouth of second blender, and first output port of second blender is connected with second input port of the 3rd blender;
The input port of second phase shifter is connected with first output port of the 3rd blender, and the input port of the 3rd phase shifter is connected with second output port of second blender;
Second output port of the output port of second phase shifter, the 3rd blender, the output port of the 3rd phase shifter are respectively as the output port of three road butler matrixs.
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CN102544763A (en) * 2011-12-27 2012-07-04 广东博纬通信科技有限公司 Dual-polarization three-beam antenna for mobile communication base station

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