CN206225538U - A kind of wideband dual polarized plane antenna for base station of differential feed - Google Patents
A kind of wideband dual polarized plane antenna for base station of differential feed Download PDFInfo
- Publication number
- CN206225538U CN206225538U CN201621089593.4U CN201621089593U CN206225538U CN 206225538 U CN206225538 U CN 206225538U CN 201621089593 U CN201621089593 U CN 201621089593U CN 206225538 U CN206225538 U CN 206225538U
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- Prior art keywords
- feed
- medium substrate
- differential feed
- base station
- polarization oscillator
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Abstract
The utility model discloses a kind of wideband dual polarized plane antenna for base station of differential feed, including antenna radiation unit, reflecting plate and four port feeding networks, the antenna radiation unit is fixed on the top of reflecting plate by support column, the antenna radiation unit is planar structure, including medium substrate, first polarization oscillator, second polarization oscillator and coupling unit, the first polarization oscillator is etched in the lower surface of medium substrate, the second polarization oscillator is etched in the upper surface of medium substrate, the coupling unit is etched in the upper and lower surface of medium substrate, four port feeding networks are located at the center of medium substrate.This antenna has with roomy, and isolation is high, high gain, antenna pattern stabilization, the advantages of simple and compact for structure, it is adaptable to antenna of mobile communication base station and easily integrated with difference channel.
Description
Technical field
The utility model is related to antenna of mobile communication base station field, and in particular to a kind of wideband dual polarized plane of differential feed
Antenna for base station.
Background technology
The high speed development of GSM, promotes Mobile Communications Market to compete Yu and adds fierceness so that communication channel is crowded,
Requirement to communication system is improved constantly.Antenna for base station is the important component of GSM, its performance it is good and bad right
Communication system plays important or even conclusive effect.The development trend of now antenna for base station, has no longer been that single antenna is only
Vertical work, but more and more integrated with other communication units, treatment and the dissemination of signal are completed jointly.
Because balancing circuitry can greatly reduce crosstalk, radio-frequency front-end generally using difference channel come transmission signal, it is and existing
Antenna technology in, most of Antenna Designs be single port feed.Single port antenna and the connection of radio-frequency front-end differential system, lead to
Differential signal is converted into feed-in single port antenna after single-ended signal frequently with balun.But before the use of balun can cause radio frequency
Damaged on end consumes, system effectiveness reduction, and integrated level is relatively low.Differential antennae changes traditional single port feed, using duplex feeding port,
Differential signal is directly inputted to two feed ports, avoids using balun, reduce loss of the signal in input port, improve day
The efficiency of line.And the use of difference base station antenna can make radio-frequency front-end possess integrated level higher, therefore difference base station day
Line is significant to GSM.
Utility model content
For the shortcoming and deficiency that overcome prior art to exist, it is wideband dual polarized that the utility model provides a kind of differential feed
Plane antenna for base station.
This antenna is big a impedance bandwidth, and isolation is high, high gain, the differential feed dual polarization plane of directional diagram stabilization
Antenna.
The utility model is adopted the following technical scheme that：
A kind of wideband dual polarized plane antenna for base station of differential feed, including the feedback of antenna radiation unit, reflecting plate and four ports
Electric network, the antenna radiation unit is fixed on the top of reflecting plate by support column, and the antenna radiation unit is planar junction
Structure, including medium substrate, the first polarization oscillator, the second polarization oscillator and coupling unit, the first polarization oscillator are etched in Jie
The lower surface of matter substrate, the second polarization oscillator is etched in the upper surface of medium substrate, and the coupling unit is etched in medium
The upper and lower surface of substrate, four port feeding network is located at the center of medium substrate.
The first polarization oscillator includes two pairs the first half wave polarization oscillator and the first coplanar microstrip lines, described two pairs first
Half wave polarization oscillator is connected by the first coplanar microstrip line, and described two pairs the first half wave polarization oscillators are on medium substrate center pair
Claim；
The second polarization oscillator includes two pairs the second half wave polarization oscillator and the second coplanar microstrip lines, described two pairs second
Half wave polarization oscillator is connected by the second coplanar microstrip line, and described two pairs the second half wave polarization oscillators are on medium substrate center pair
Claim；
Described first and second coplanar microstrip line is mutually orthogonal in medium substrate center, first and second adjacent half-wave pole
The angle for changing oscillator is 90 degree.
The first polarization oscillator and the second polarization oscillator structure size all same, the first polarization oscillator and the second polarization are shaken
Sub- size is 0.42 λ0,λ0It is the center resonant frequency wavelength in free space of the antenna.
The coupling unit includes eight coupling circular arcs, and upper and lower surface respectively prints four, and four coupling circular arcs are located at medium
Four angles of substrate, are particularly located at the periphery of first and second half wave polarization oscillator angle.
Four port network is included for the first differential feed network to the first polarization oscillator feed and for the
Second differential feed network of two polarization oscillator feeds, the first differential feed network includes two the first differential feed ports
And the first feed stub, the first feed stub is etched in the upper surface of medium substrate, the second differential feed net
Network includes two the second differential feed ports and the second feed stub, and the second feed stub is etched in medium substrate
Lower surface, described first and second feed stub is mutually perpendicular to.
The first, second differential feed port is coaxial line, and two the first differential feed ports are located at the first feed
The two ends of stub, its inner wire is connected with the first feed stub, and its outer conductor is connected with the first coplanar microstrip line；
Two the second differential feed ports are located at the two ends of the second feed stub, its inner wire and the second feed stub
Connection, its outer conductor is connected with the second coplanar microstrip line.
The reflecting plate and medium substrate are square.
The support column is made up of insulating materials.
The physical dimension of the first feed stub and the second feed stub is identical.
The beneficial effects of the utility model：
(1) antenna is polarized using two Duis, and oscillator is orthogonal to be printed on medium substrate two sides, and antenna structure is simple；
(2) the utility model uses four port feeding networks, and wherein feeding network is only with two feeds stub and four
Port, feeding network is simple.
(3) coplanar microstrip line of the feeding network of the antenna directly with polarization oscillator connects and realizes differential feed, structure letter
It is single novel.
(4) beamwidth of antenna can cover 1710-2690MHz, and polarization isolation reaches 60dB, directional diagram stabilization.
Brief description of the drawings
Fig. 1 is the tomograph of the wideband dual polarized plane antenna for base station of differential feed of utility model；
Fig. 2 is the top view of the wideband dual polarized plane antenna for base station of differential feed of the present utility model；
Fig. 3 is the amplification of four port feeding networks of the wideband dual polarized plane antenna for base station of differential feed of the present utility model
Figure；
Fig. 4 is the profile of the wideband dual polarized plane antenna for base station of differential feed of the present utility model；
Fig. 5 is the impedance bandwidth of the wideband dual polarized plane antenna for base station of differential feed of the present utility model；
Fig. 6 is the gain of the wideband dual polarized plane antenna for base station of differential feed of the present utility model；
Fig. 7 is the horizontal radiation pattern of the wideband dual polarized plane antenna for base station of differential feed of the present utility model.
Specific embodiment
With reference to embodiment and accompanying drawing, the utility model is described in further detail, but reality of the present utility model
Apply mode not limited to this.
Embodiment
As shown in Fig. 1 and Fig. 4, a kind of wideband dual polarized plane antenna for base station of differential feed, including antenna radiation unit 1,
The port feeding network 4 of reflecting plate 2 and four, the antenna radiation unit 1 is fixed on the top of reflecting plate 2 by four support columns 3,
Distance is 40mm.
As shown in Fig. 2 antenna radiation unit 1 is planar structure, including the polarization of medium substrate 5, first oscillator 7, the second pole
Change oscillator 10 and coupling unit 6, the first polarization oscillator 7 is specially+45 degree polarization oscillators, and the second polarization oscillator is -45 degree
Polarization oscillator, the first polarization oscillator 7 is etched in the lower surface of medium substrate 5, and the second polarization oscillator 10 is etched in Jie
The upper surface of matter substrate 5, the coupling unit 6 is etched in the upper and lower surface of medium substrate 5, four port transmission network
Network 4 is located at the center of medium substrate 5.
The first polarization oscillator 7 is made up of two couples of the first half wave polarization oscillator 8A and the first coplanar microstrip line 9A, and first
Half wave polarization oscillator 8A is+45 degree half-wave dipoles, and described two couples the first half wave polarization oscillator 8A pass through the first coplanar microstrip line 9A
Connection, described two couples the first half wave polarization oscillator 8A on the Central Symmetry of medium substrate 5, two couples of the first half wave polarization oscillator 8A and
First coplanar microstrip line 9A is etched in the lower surface of medium substrate 5.
The second polarization oscillator 10 includes two couples the second half wave polarization oscillator 8B and the second coplanar microstrip line 9B, described two
The second half wave polarization oscillator 8B are connected by the second coplanar microstrip line 9B, the second half wave polarization oscillator 8B is specially -45
Degree half-wave dipole, described two couples the second half wave polarization oscillator 8B and the second coplanar microstrip line 9B are etched in the upper table of medium substrate 5
Face.
Described two couples the second half wave polarization oscillator 8B are on the Central Symmetry of medium substrate 5；
Described first and second coplanar microstrip line 9A, 9B are mutually orthogonal in the center of medium substrate 5, adjacent first and second
The angle of half wave polarization oscillator 8A, 8B is 90 degree.
The first polarization oscillator 7 and second polarization physical dimension all same of oscillator 10, the first polarization oscillator 7 and second pole
It is 0.42 λ to change the size of oscillator 100,λ0It is the center resonant frequency wavelength in free space of the antenna, the chi in the present embodiment
It is very little to be specially length dimension.
The coupling unit 6 is etched in the upper and lower surface of medium substrate, per four coupling circular arcs of one side printing, described four
Individual coupling circular arc is located at four angles of medium substrate 5, is particularly located at the outer of first and second half wave polarization oscillator 8A, 8B angle
Enclose.
As shown in figure 3, four port feeding network 4, the first differential feed network includes the first differential feed port
12A, 12B and the first feed stub 11A, the first differential feed network are the first polarization oscillator feed.Second differential feed net
Network includes the feed stub 11B of the second differential feed port 13A, 13B and second, and the second differential feed network is that the second polarization is shaken
Son feed.First feed stub 11A is etched in the upper surface of medium substrate 5, and the second feed stub 11B is etched in medium base
The lower surface of plate 5.
As shown in figure 3, two feed ports of the first differential feed network are realized by two coaxial lines, coaxial line it is upper
Hold through after reflecting plate 2, microstrip line 9A coplanar with first is connected the outer conductor of upper end respectively, and inner wire is each passed through medium substrate
5, it is connected with the first feed stub 11A；Two feed ports of the second differential feed network are same to be realized by two coaxial lines,
After the upper end of coaxial line passes through reflecting plate 2, through medium substrate 5, microstrip line 9B coplanar with second connects the outer conductor of upper end respectively
Connect, inner wire is each passed through medium substrate 5, be connected with the second feed stub 11B.
The physical dimension of the first feed stub and the second feed stub is identical, first and second feed stub
Characteristic impedance be 50 ohm.
The reflecting plate and medium substrate be it is square, medium substrate 5 be Ro4350B, thickness 0.76mm.
As shown in figure 5, the wideband dual polarized plane antenna for base station bandwidth of this differential feed obtained by the present embodiment, echo damage
Consumption reaches -15dB in 1.69-2.73GHz, can cover 2G, 3G, the 1710-2690MHz needed for 4G, and polarization isolation reaches
More than 60dB.
As shown in fig. 6, what two kinds of the wideband dual polarized plane antenna for base station of this differential feed obtained by the present embodiment polarized
Gain, the gain of two kinds of polarization reaches 9dBi or so in 1.7-2.7GHz.
As shown in fig. 7, the horizontal plane of this wideband dual polarized differential feed flat plane antenna 2.2GHz obtained by the present embodiment
Directional diagram.Thus figure it could be assumed that, the wideband dual polarized plane antenna for base station of the utility model differential feed have stabilization side
Xiang Tu.
Above-described embodiment is the utility model preferably implementation method, but implementation method of the present utility model is not by described
The limitation of embodiment, it is other it is any without departing from the change made under Spirit Essence of the present utility model and principle, modify, replace
Generation, combination, simplification, should be equivalent substitute mode, be included within protection domain of the present utility model.
Claims (9)
1. the wideband dual polarized plane antenna for base station of a kind of differential feed, it is characterised in that including antenna radiation unit, reflecting plate and
Four port feeding networks, the antenna radiation unit is fixed on the top of reflecting plate, the antenna radiation unit by support column
It is planar structure, including medium substrate, the first polarization oscillator, the second polarization oscillator and coupling unit, the first polarization oscillator
The lower surface of medium substrate is etched in, the second polarization oscillator is etched in the upper surface of medium substrate, the coupling unit erosion
The upper and lower surface of medium substrate is engraved on, four port feeding network is located at the center of medium substrate.
2. the wideband dual polarized plane antenna for base station of a kind of differential feed according to claim 1, it is characterised in that described
One polarization oscillator includes two pairs the first half wave polarization oscillators and the first coplanar microstrip lines, and described two pairs the first half wave polarization oscillators lead to
Cross the first coplanar microstrip line connection, described two pairs the first half wave polarization oscillators are on medium substrate Central Symmetry；
The second polarization oscillator includes two pairs the second half wave polarization oscillator and the second coplanar microstrip lines, two pairs of second half-waves
Polarization oscillator is connected by the second coplanar microstrip line, and described two pairs the second half wave polarization oscillators are on medium substrate Central Symmetry；
Described first and second coplanar microstrip line is mutually orthogonal in medium substrate center, and first and second adjacent half wave polarization shakes
The angle of son is 90 degree.
3. the wideband dual polarized plane antenna for base station of a kind of differential feed according to claim 2, it is characterised in that described
One polarization oscillator and the second polarization oscillator structure size all same, the first polarization oscillator and the second polarization oscillator size are 0.42
λ0,λ0It is the center resonant frequency wavelength in free space of the antenna.
4. a kind of wideband dual polarized plane antenna for base station of differential feed according to claim 1, it is characterised in that the coupling
Closing unit includes eight coupling circular arcs, and upper and lower surface respectively prints four, and four coupling circular arcs are located at four angles of medium substrate, tool
Body is located at the periphery of first and second half wave polarization oscillator angle.
5. the wideband dual polarized plane antenna for base station of a kind of differential feed according to claim 1, it is characterised in that described four
Port network is included for the first differential feed network to the first polarization oscillator feed and for the second polarization oscillator feed
The second differential feed network, the first differential feed network include two the first differential feed ports and first feed cutting back
Line, the first feed stub is etched in the upper surface of medium substrate, and the second differential feed network includes two second
Differential feed port and the second feed stub, the second feed stub are etched in the lower surface of medium substrate, and described the
One and second feed stub be mutually perpendicular to.
6. the wideband dual polarized plane antenna for base station of a kind of differential feed according to claim 5, it is characterised in that described
First, the second differential feed port is coaxial line, and two the first differential feed ports are located at the two ends of the first feed stub, its
Inner wire is connected with the first feed stub, and its outer conductor is connected with the first coplanar microstrip line；
Two the second differential feed ports are located at the two ends of the second feed stub, and its inner wire and the second feed stub connect
Connect, its outer conductor is connected with the second coplanar microstrip line.
7. the wideband dual polarized plane antenna for base station of a kind of differential feed according to claim 1, it is characterised in that described anti-
Penetrate plate and medium substrate be it is square.
8. a kind of wideband dual polarized plane antenna for base station of differential feed according to claim 1, it is characterised in that the branch
Dagger is made up of insulating materials.
9. the wideband dual polarized plane antenna for base station of a kind of differential feed according to claim 5, it is characterised in that described
The physical dimension of one feed stub and the second feed stub is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621089593.4U CN206225538U (en) | 2016-09-27 | 2016-09-27 | A kind of wideband dual polarized plane antenna for base station of differential feed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621089593.4U CN206225538U (en) | 2016-09-27 | 2016-09-27 | A kind of wideband dual polarized plane antenna for base station of differential feed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206225538U true CN206225538U (en) | 2017-06-06 |
Family
ID=58783053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621089593.4U Expired - Fee Related CN206225538U (en) | 2016-09-27 | 2016-09-27 | A kind of wideband dual polarized plane antenna for base station of differential feed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206225538U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509376A (en) * | 2019-12-20 | 2020-08-07 | 瑞声科技(新加坡)有限公司 | Antenna unit, encapsulation module and electronic equipment |
| WO2023206005A1 (en) * | 2022-04-25 | 2023-11-02 | 京东方科技集团股份有限公司 | Dual-polarized antenna and electronic device |
-
2016
- 2016-09-27 CN CN201621089593.4U patent/CN206225538U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509376A (en) * | 2019-12-20 | 2020-08-07 | 瑞声科技(新加坡)有限公司 | Antenna unit, encapsulation module and electronic equipment |
| WO2023206005A1 (en) * | 2022-04-25 | 2023-11-02 | 京东方科技集团股份有限公司 | Dual-polarized antenna and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170606 Termination date: 20190927 |