CN207217747U - A kind of base station array antenna and base station radio-frequency equipment - Google Patents
A kind of base station array antenna and base station radio-frequency equipment Download PDFInfo
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- CN207217747U CN207217747U CN201721075432.4U CN201721075432U CN207217747U CN 207217747 U CN207217747 U CN 207217747U CN 201721075432 U CN201721075432 U CN 201721075432U CN 207217747 U CN207217747 U CN 207217747U
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- array antenna
- base station
- power splitter
- electric dipole
- station array
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Abstract
The utility model provides a kind of antenna for base station and base station radio-frequency equipment, including multiple array antennas, and the feeding network being connected with each array antenna, the feeding network include：Input port, for being connected with external circuit；Power splitter unit, input are connected with the input port, and the power splitter unit is used to carry out power distribution to transmission signal to widen frequency range；Multiple reconfigurable cells, each output end of the input of each reconfigurable cell respectively with the power splitter unit are connected, and for carrying out phase reconstruction to transmission signal, the output end of each reconfigurable cell is connected with an array antenna respectively.The above-mentioned base station array antenna of the utility model and base station radio-frequency equipment carry out power distribution by power splitter to transmission signal, increase impedance bandwidth, and frequency range is widened in realization；Fed again after carrying out phase reconstruction to transmission signal by reconfigurable cell.
Description
Technical field
The utility model belongs to antenna technical field, more particularly to a kind of lobe that can be applied to the 5th generation communication system
The base station array antenna and base station radio-frequency equipment of restructural.
Background technology
It is more and more to the demand of wide lobe and the antenna for base station of wide-band with the fast development of GSM.
In order to meet the requirement in practical application to lobe and frequency range, such as increasingly wider coverage, in recent years, people grind
Study carefully different types of linear polarized antenna.
At present, there is the unidirectional multi-polarization antenna for the wide-band for having stable wide lobe in H faces, but in whole application frequency
Only 63.3 ° of the lobe width in its H face of section.And it is another can realize be up to 41% frequency bandwidth, and the electricity of the wide lobe in H faces
Magnetic-dipole antenna then only has about 6.3dBi gain.It would therefore be desirable to a kind of more wide-band and the base station day of wider lobe
Line, it is provided simultaneously with dual polarization multiple antennas miniaturization effect.
Utility model content
The utility model provides a kind of base station array antenna, to solve frequency range existing for antenna for base station of the prior art
The problem of narrow.
A kind of base station array antenna that the utility model embodiment provides, including multiple array antennas, and with each institute
The feeding network of array antenna connection is stated, the feeding network includes：
Input port, for being connected with external circuit；
Power splitter unit, input are connected with the input port, and the power splitter unit is used to carry out transmission signal
Power distribution is to widen frequency range；
Multiple reconfigurable cells, the input of each reconfigurable cell are each defeated with the power splitter unit respectively
Go out end connection, for carrying out phase reconstruction to transmission signal, the output end of each reconfigurable cell respectively with described in one
Array antenna connects.
Further, the power splitter unit includes：
One road power splitter of three-level two being connected with the input port；With
One single-stage M roads power splitter being connected with the two road power splitter of three-level, two output ends, wherein M are more than 2
Integer.
Further, the reconfigurable cell is phase shifter.
Further, there is at least one reconfigurable cell changeable synchronous transfer passage and asynchronous transmission to lead to
Road.
Further, the array antenna is 3, and the reconfigurable cell is 3, and the single-stage M roads power splitter is tool
There is the road power splitter of single-stage two of three output ends.
Further, described base station array antenna also includes lacking the reflective box of cover, the array antenna and described
Feeding network is arranged in the reflective box.
Further, each array antenna includes electric dipole, the magnetic being arranged in a mutually vertical manner with the electric dipole
Dipole and coupled with the electric dipole and relatively described electric dipole is positioned at current feed department with the magnetic dipole homonymy.
Further, the electric dipole includes N number of centrosymmetric radiation fin, wherein the N is more than 4 even number；
The magnetic dipole includes short-circuit part that is for ground connection and being located at the side of plane first where the electric dipole.
Further, the short-circuit part includes N number of short-circuit post, N number of short-circuit post respectively with N number of radiation fin one
One is correspondingly oppositely arranged.
Further, the current feed department includes the N/2 feed probes in " ㄇ " font, and the N/2 feed probes exist
Overlapped where the symmetrical centre of the radiation fin at axis, each feed probes couple with the electric dipole, and each
The both ends of the feed probes extend from plane where the electric dipole to its first side direction.
Further, the feed probes of " ㄇ " font include：
Transport part, one end and the output end of the reconfigurable cell couple；
Coupling part, one end and the transport part other end vertical connection, the coupling part couple with the electric dipole, and
The center of the coupling part overlaps with axis where the symmetrical centre of the radiation fin；
Freedom portion, with the coupling part other end vertical connection.
Further, each radiation fin is separated by with gap, and each feed probes are relative with the gap.
Further, during N=4, each radiation fin is the rectangle with two corner cuts, and two corner cuts are close to phase
The both sides of the adjacent radiation fin.
In addition, a kind of base station radio-frequency equipment is additionally provided, including base station array antenna described above.
Above-mentioned base station array antenna and base station radio-frequency equipment carries out power distribution, increase resistance to transmission signal by power splitter
Frequency range is widened in anti-bandwidth, realization；Fed again after carrying out phase reconstruction to transmission signal by reconfigurable cell.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of base station array antenna in the utility model preferred embodiment；
Fig. 2 is the structural representation of the feeding network in base station array antenna shown in Fig. 1；
Fig. 3 is the dimensional structure diagram of the array antenna of base station array antenna shown in Fig. 1；
Fig. 4 is the structural representation of the electric dipole in array antenna shown in Fig. 3；
Fig. 5 is the perspective structure schematic diagram of the feed probes in array antenna shown in Fig. 3；
The SWR and gain results of an array antenna analog simulation in the base station array antenna that Fig. 6 is Fig. 1；
The front and rear ratio and isolation result of an antenna element analog simulation in the base station array antenna that Fig. 7 is Fig. 1；
Fig. 8 A and Fig. 8 B are the SWR and gain results that Fig. 1 base station array antenna both of which Imitating emulates；
Fig. 9 is the radiation mode under Fig. 1 base station array antenna E faces and H faces different working modes.
Embodiment
In order that the technical problems to be solved in the utility model, technical scheme and beneficial effect are more clearly understood, below
With reference to drawings and Examples, the utility model is further elaborated.It should be appreciated that specific implementation described herein
Example only to explain the utility model, is not used to limit the utility model.
Fig. 1 and Fig. 2 are referred to, the base station array that can be applied to base station radio-frequency equipment in the utility model preferred embodiment
Antenna, including multiple array antennas 100 and the feeding network 200 that is connected with each array antenna 100, feeding network 200 wrap
Include input port 210, power splitter unit 220 and multiple reconfigurable cells 230.Said in embodiment with 3 array antennas 100
It is bright.I.e. reconfigurable cell 230 is 3.
Input port 210 is used to be connected with external circuit (not shown)；The input and input port of power splitter unit 220
210 connections, power splitter unit 220 are used to carry out power distribution to transmission signal to widen frequency range；Multiple reconfigurable cells 230
Input is connected with each output end of power splitter unit 220 respectively, each to weigh for carrying out phase reconstruction to transmission signal
The output end of structure unit 230 is connected with an array antenna 100 respectively.
In present embodiment, power splitter unit 220 includes：One road power splitter of three-level two being connected with input port 210
221；With a power splitter of single-stage M roads 222 being connected with three-level two road power splitters, 221 two output ends, wherein M is more than 2
Integer.The road power splitter 221 of three-level two is 3-dB Wilkinson power divider, is used for increase impedance bandwidth, frequency range is widened in realization
Function.As shown, M 2, the road power splitter of single-stage two have three output ends, are 3-dB Wilkinson power divider, by 1:2:1
Power proportions fed to three array antennas 100, realize power splitter and phase reconfigurable function.
Specifically, reconfigurable cell 230 is phase shifter.Wherein, at least one reconfigurable cell 230 (231) has and can cut
The synchronous transfer passage 230A and asynchronous transmission passage 230B changed.Can be by controlling the switch of corresponding feeding network 200 to select
Work is in both modes：Synchronous mode (0 ° of difference) and asynchronous mode (110 ° lag behind two other array antenna 100)
In one embodiment, by 0.787mm Rogers's dielectric material, (relative dielectric constant is feeding network 200
2.33) build, power splitter and phase reconfigurable function can be realized simultaneously.
Base station array antenna 100 also includes the reflective box 300 for lacking cover, and array antenna 100 and feeding network 200 are set
In reflective box 300.In this way, reflecting surface is added around array antenna 100, so that the gain of array antenna 100 obtains
Improve, tend towards stability to effective.
In one embodiment, referring to Fig. 3, each array antenna 100 includes electric dipole 110 and electric dipole
110 magnetic dipoles 120 being arranged in a mutually vertical manner and coupled with electric dipole 110 and relative electric dipole 110 is located at and magnetic couple
The current feed department 130 of extremely sub 120 homonymies.
In present embodiment, Fig. 3 and Fig. 4 are referred to, electric dipole 110 includes N number of centrosymmetric radiation fin 111, its
Middle N is more than 4 even number.Using N as 4 explanation related embodiments.Preferably, each radiation fin 111 is separated by with gap 50, gap
50 run through its surface as the axis in length and breadth of electric dipole 110.It can be not provided with cracking in other embodiments, or crack
Not through the surface of electric dipole 110.
In addition, each radiation fin 111 is the rectangle with two corner cuts, two corner cuts are close to adjacent radiation fin 111
Both sides.Therefore the corner cut of two radiation fins 111 adjacent on electric dipole 110 formation 4 is centrosymmetric " C " shapes groove 112, " C "
Shape groove 112 is formed between two adjacent radiation fins 111, and each " C " shape groove 112 opening is located at the side of electric dipole 110
Edge；During provided with gap 50, " bottom of C " shapes groove 112 communicates with gap 50.Electromagnetic dipole possesses lifting antenna gain in itself
Characteristic, while can reduce effective electrical length here by shearing corner cut, so as to widen frequency range and reduce section.With feed
Network 200 realizes the effect of wide-band together.
Fig. 3 and Fig. 5 are referred to, magnetic dipole 120 includes for ground connection and is located at the place plane first of electric dipole 110
The short-circuit part of side (bottom side shown in diagram 3).121,4 short-circuit posts 121 of short-circuit post that short-circuit part includes 4 metals are distinguished
Correspond and be oppositely arranged with 4 radiation fins 111.
Current feed department 130 includes pair of 2 131,2 feed probes 131 of feed probes in " ㄇ " font in radiation fin 111
Overlapped where title center at axis, each feed probes 131 couple with electric dipole 110, and the both ends of each feed probes 131
Portion extends from the place plane of electric dipole 110 to its first side direction.Each short-circuit post 121 be located at each feed probes 131 it
Between, each feed probes 131 form the relative breach 132 in two bottoms at overlapping place.
Array antenna 100 sets centrosymmetric multiple radiation fins 131, realizes the radiation bandwidth of 2G-5G multifrequency, passes through
The feed probes 131 of " ㄇ " font are set and set in the side of probe short-circuit post 121 and and resonant panel so that antenna band
Integral translation, and then cause the height reduction of antenna, the volume of antenna is greatly reduced, while reduce being fabricated to for antenna
This.Referring to Fig. 9, in antenna pattern, the lobe of the antenna of electromagnetic dipole 120 of H faces restructural lobe in E faces stabilizes to
55 °, have benefited from this design, stable wide lobe and wide impedance bandwidth can be realized in whole application band.Therefore, in future
The 5th Generation Mobile Communication System in, this is a kind of good antenna for base station of development prospect.
The feed probes 131 of " ㄇ " font include transport part 131a, coupling part 131b and freedom portion 131c.Transport part 131a
The output end of one end and reconfigurable cell 230 couple；Coupling part 131b one end and transport part 131a other end vertical connections,
Coupling part 131b couples with electric dipole 110, and coupling part 131b center and axis weight where the symmetrical centre of radiation fin 111
Close；Freedom portion 131c with coupling part 131b other end vertical connections.Each feed probes 131 are relative with gap 50, Ge Gekui
Plane and the place plane of electric dipole 110 where the coupling part 131b of electric probe 131 be not overlapping.
Placed in this way, two feed probes 131 are cross types, so that the dual polarization of array antenna 100 obtains
Good isolation characteristic.In addition, feed structure realize be sequence feed so that array antenna 100 have respectively 0 °, 90 °, 180 °,
270 ° of phase difference, this causes antenna unit array to generate a circular polarisation so that antenna element efficiency of transmission is improved.
Further, transport part 131a length is more than freedom portion 131c length.Positioned at two short circuit metal posts 121 it
Between perpendicular " ㄇ " the font feed probes 131 of two different heights can realize ultra wide band function, cover 2G, 3G,
4G and 5G frequency ranges, while the isolation of antenna can also be improved.
The feed probes 131 of " ㄇ " font reduce effective electrical length, are used to lower day with the collective effect of electromagnetic dipole 120
The section of line.The utility model possesses good by selecting suitable unit spacing, the spacing of the paster of electromagnetic dipole 120
Isolation and front and rear compare performance.
In one embodiment, each radiation fin 11129.7mm*29.7mm corner cut is square.The short-circuit height of post 121 is
29.6mm；Two short-circuit spacing of post 121 are 6.5mm.
The array antenna of lobe restructural, the bandwidth of 80% SWR≤2 is achieved over by shearing four radiation fins,
The equipment that can be applied to 1.56-3.78GHz 2G/3G/LTE frequency ranges and 3.5GHz C frequency ranges (3400-3600MHz), gain is about
For 11.2dBi, a kind of classification feeding network knot for realizing and widening frequency range, power distribution and phase reconfigurable function is provided simultaneously with
Structure.
Fig. 2, Fig. 5 and Fig. 6 are referred to, the simulated impedance bandwidth that can be easily observed port 1 and port 2 is respectively
83.5% and 83.4% (SWR≤2).The operating frequency range of port 1 and port 2 is slightly different.This is probably by two feeds
Caused by the fine difference of probe size and position.The common frequency bandwidth in two ports is 80% (SWR≤2), coverage
3.77GHz is arrived for 1.56.Port 1, the gain ranging of the analogue simulation of port 2 are respectively 10.1 to be arrived to 12.3dBi and 9.8
12.2dBi.As shown in fig. 7, the isolation of two ports is better than 30dB in working frequency range, meet the design of business antenna for base station
It is required that.The front and rear of analogue simulation is more than 20dB than (FBRs).
One double polarization array antenna achieves over the bandwidth of 80% SWR≤2 by shearing four radiation fins, can answer
For 1.56-3.78GHz 2G/3G/LTE frequency ranges and 3.5GHz C frequency ranges (3400-3600MHz) equipment.
The dual-polarized antenna array of the lobe restructural of this Unit three can realize a wide impedance bandwidth to meet
The requirement of following 5G applications.As shown in figs. 8 a and 8b, pattern 1 and the common impedance bandwidth of pattern 2 for 1.92 to 2.8GHz and
3.1-3.65GHz, wherein pattern 2 are little wider, and 3.9GHz is arrived for 1.9.As shown in table 1, the lobe width in H faces can be at two
Switch between mode of operation.Meanwhile no matter which kind of mode of operation, lobe width are less than 20 ° in the fluctuation of whole working frequency range.Cause
This, for antenna for base station, this is a kind of antenna for having good development prospect under following 5th generation communication system.
Table 1：The different working modes of aerial array
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (14)
1. a kind of base station array antenna, it is characterised in that be connected including multiple array antennas, and with each array antenna
Feeding network, the feeding network includes：
Input port, for being connected with external circuit；
Power splitter unit, input are connected with the input port, and the power splitter unit is used to carry out power to transmission signal
Distribute to widen frequency range；
Multiple reconfigurable cells, the input of each reconfigurable cell each output end with the power splitter unit respectively
Connection, for carrying out phase reconstruction to transmission signal, the output end of each reconfigurable cell respectively with an array
Antenna connects.
2. base station array antenna as claimed in claim 1, it is characterised in that the power splitter unit includes：
One road power splitter of three-level two being connected with the input port；With
One single-stage M roads power splitter being connected with the two road power splitter of three-level, two output ends, wherein M are more than 2 integer.
3. base station array antenna as claimed in claim 2, it is characterised in that the reconfigurable cell is phase shifter.
4. base station array antenna as claimed in claim 3, it is characterised in that at least one reconfigurable cell has and can cut
The synchronous transfer passage and asynchronous transmission passage changed.
5. base station array antenna as claimed in claim 2, it is characterised in that the array antenna is 3, the restructural list
Member is 3, and the single-stage M roads power splitter is the road power splitter of single-stage two with three output ends.
6. base station array antenna as claimed in claim 2, it is characterised in that also include the reflective box for lacking cover, the battle array
Array antenna and the feeding network are arranged in the reflective box.
7. the base station array antenna as described in any one of claim 1 to 6, each array antenna include electric dipole, with
Magnetic dipole that the electric dipole is arranged in a mutually vertical manner and coupled with the electric dipole and relatively described electric dipole position
In the current feed department with the magnetic dipole homonymy.
8. base station array antenna as claimed in claim 7, it is characterised in that it is individual centrosymmetric that the electric dipole includes N
Radiation fin, wherein the N is more than 4 even number；The magnetic dipole includes for ground connection and is located at the electric dipole institute
Short-circuit part in the side of plane first.
9. base station array antenna as claimed in claim 8, it is characterised in that the short-circuit part includes N number of short-circuit post, N number of
The short-circuit post corresponds with N number of radiation fin be oppositely arranged respectively.
10. base station array antenna as claimed in claim 8, it is characterised in that it is in " ㄇ " font that the current feed department, which includes N/2,
Feed probes, N/2 feed probes are overlapping where the symmetrical centre of the radiation fin at axis, each feed
Probe couples with the electric dipole, and the both ends of each feed probes where the electric dipole plane to its
One side direction extends.
11. base station array antenna as claimed in claim 10, it is characterised in that the feed probes of " ㄇ " font include：
Transport part, one end and the output end of the reconfigurable cell couple；
Coupling part, one end and the transport part other end vertical connection, the coupling part couple with the electric dipole, and described
The center of coupling part overlaps with axis where the symmetrical centre of the radiation fin；
Freedom portion, with the coupling part other end vertical connection.
12. base station array antenna as claimed in claim 10, it is characterised in that each radiation fin is separated by with gap, respectively
The individual feed probes are relative with the gap.
13. base station array antenna as claimed in claim 8, it is characterised in that during N=4, each radiation fin is with two
The rectangle of individual corner cut, two corner cuts are close to the both sides of the adjacent radiation fin.
14. a kind of base station radio-frequency equipment, it is characterised in that including the base station array antenna described in any one of claim 1 to 13.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721075432.4U CN207217747U (en) | 2017-08-25 | 2017-08-25 | A kind of base station array antenna and base station radio-frequency equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721075432.4U CN207217747U (en) | 2017-08-25 | 2017-08-25 | A kind of base station array antenna and base station radio-frequency equipment |
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| CN207217747U true CN207217747U (en) | 2018-04-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611570A (en) * | 2017-08-25 | 2018-01-19 | 深圳日海通讯技术股份有限公司 | A kind of base station array antenna and base station radio-frequency equipment |
| CN113258281A (en) * | 2021-05-31 | 2021-08-13 | 成都天锐星通科技有限公司 | Magnetoelectric dipole antenna structure and antenna array |
-
2017
- 2017-08-25 CN CN201721075432.4U patent/CN207217747U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611570A (en) * | 2017-08-25 | 2018-01-19 | 深圳日海通讯技术股份有限公司 | A kind of base station array antenna and base station radio-frequency equipment |
| CN107611570B (en) * | 2017-08-25 | 2024-02-20 | 日海智能科技股份有限公司 | Base station array antenna and base station radio frequency equipment |
| CN113258281A (en) * | 2021-05-31 | 2021-08-13 | 成都天锐星通科技有限公司 | Magnetoelectric dipole antenna structure and antenna array |
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Address after: 518000 Ma Jialong 17, 1701, Daxin Road, Nanshan District, Shenzhen, Guangdong, 17 Patentee after: SUNSEA AIOT TECHNOLOGY Co.,Ltd. Patentee after: Shenzhen Chuanhong Technology Co.,Ltd. Address before: 518000 Ma Jialong 17, 1701, Daxin Road, Nanshan District, Shenzhen, Guangdong, 17 Patentee before: SUNSEA TELECOMMUNICATIONS Co.,Ltd. Patentee before: SHENZHEN RIHAI ANTENNA TECHNOLOGY CO.,LTD. |
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Effective date of registration: 20231225 Address after: 518000 Ma Jialong 17, 1701, Daxin Road, Nanshan District, Shenzhen, Guangdong, 17 Patentee after: SUNSEA AIOT TECHNOLOGY Co.,Ltd. Address before: 518000 Ma Jialong 17, 1701, Daxin Road, Nanshan District, Shenzhen, Guangdong, 17 Patentee before: SUNSEA AIOT TECHNOLOGY Co.,Ltd. Patentee before: Shenzhen Chuanhong Technology Co.,Ltd. |
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