CN213026482U - 5G directional base station antenna - Google Patents
5G directional base station antenna Download PDFInfo
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- CN213026482U CN213026482U CN202021730644.3U CN202021730644U CN213026482U CN 213026482 U CN213026482 U CN 213026482U CN 202021730644 U CN202021730644 U CN 202021730644U CN 213026482 U CN213026482 U CN 213026482U
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Abstract
The utility model discloses a 5G directional base station antenna, including the antenna unit, the antenna unit includes the support, is equipped with the antenna element on the support, is equipped with first gap, second gap, third gap and fourth gap on the antenna element respectively, and the shape of first gap is "ten" style of calligraphy, and the first gap equally divide into four radiation portions with the antenna element, all is equipped with well kenozooecium on the radiation portion of each; the second gap is positioned on one side of the hollow part far away from the first gap, and one end of the second gap is communicated with the hollow part; the third gap is positioned on one side of the hollow part close to the center of the first gap, and one end of the third gap is communicated with the hollow part; the fourth gap is close to the edge of the antenna oscillator, each end of the first gap is provided with a corner cut portion, and the middle of the fourth gap is communicated with the first gap through the corner cut portions. The 5G directional base station antenna has the characteristics of simple structure, small overall size, low manufacturing cost, ultra-wide bandwidth, high cross polarization ratio and high isolation.
Description
Technical Field
The utility model relates to the technical field of antennas, especially, relate to a directional basic station antenna of 5G.
Background
Following the 4G communication era, 5G communication began to rise, and low latency, high rate and massive connectivity are the main features of 5G communication today. Time division multiplexing, frequency division multiplexing, spatial multiplexing, polarization multiplexing, and the like are common ways to increase network capacity. The communication frequency band of the 5G communication defined by 3GPP is divided into two frequency bands FR1 and FR2, FR2 mainly refers to millimeter waves, and FR1 mainly refers to a frequency band below 6GHz, namely Sub 6G. The part smaller than 3G is already used in the previous network. For the current 5G communication, 3.5G is the mainstream frequency band of communication, so a 5G directional base station antenna needs to be designed to meet the 5G communication requirement.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: A5G directional base station antenna is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: A5G directional base station antenna comprises an antenna unit, wherein the antenna unit comprises a support, an antenna oscillator is arranged on the support, a first gap, a second gap, a third gap and a fourth gap are respectively arranged on the antenna oscillator, the first gap is in a cross shape, the antenna oscillator is averagely divided into four radiation parts by the first gap, and a hollow part is arranged on each radiation part; the second gap is positioned on one side, away from the first gap, of the hollow part, and one end of the second gap is communicated with the hollow part; the third gap is positioned on one side of the hollow part close to the center of the first gap, and one end of the third gap is communicated with the hollow part; the fourth gap is close to the edge of the antenna oscillator, each end of the first gap is provided with a corner cut portion, and the middle of the fourth gap is communicated with the first gap through the corner cut portions.
Further, the hollow part is circular or polygonal in shape.
Furthermore, the shape of the antenna oscillator is square, the second gaps are arranged at four corners of the antenna oscillator, the third gaps and the second gaps are located on a group of diagonal angles of the radiation part, and the fourth gaps are arranged close to four sides of the antenna oscillator.
Furthermore, the side length of the antenna element is 0.56 times of the wavelength corresponding to 3.5 GHz.
Furthermore, the antenna also comprises a PCB board, and the antenna unit is arranged on the PCB board.
Further, the support includes horizontal support plate and vertical support plate, the antenna element set up in horizontal support plate is last, horizontal support plate passes through vertical support plate set up in on the PCB board, vertical support plate includes each other first backup pad and the second backup pad that sets up for 90.
Furthermore, a first feed branch is arranged on the first supporting plate, a second feed branch is arranged on the second supporting plate, a feed network is arranged on the PCB, and one end of each of the first feed branch and the second feed branch is connected with the feed network.
Furthermore, the first supporting plate and the second supporting plate are respectively provided with a balun which is positioned on the side surface of the first supporting plate far away from the first feeding branch and on the side surface of the second supporting plate far away from the second feeding branch, and the grounding plate is further included, and the balun is connected with the grounding plate.
Further, the feed network includes a feed port and a one-to-two power divider, and the feed port is connected to the first feed branch or the second feed branch through the one-to-two power divider.
Furthermore, the number of the antenna units is multiple, and the center distance between two antenna units connected to the same one-to-two power divider is 0.8 times of the wavelength corresponding to 3.5 GHz.
The beneficial effects of the utility model reside in that: the first gap, the second gap, the third gap, the fourth gap and the corner cutting part are arranged on the antenna oscillator, so that the antenna can work in a 3.5G frequency band (3300MHz-3800MHz), and has the characteristics of ultra-wide bandwidth, high cross polarization ratio and high isolation, and has good electrical performance; the utility model discloses a directional basic station antenna of 5G belongs to the small base station antenna of low section double polarization, and its simple structure is whole small, and the cost of manufacture is low, and easily engineering realizes, is applicable to mass production.
Drawings
Fig. 1 is a schematic structural diagram of a 5G directional base station antenna according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of another view angle of the 5G directional base station antenna according to the first embodiment of the present invention;
fig. 3 is a schematic structural diagram of an antenna unit in a 5G directional base station antenna according to a first embodiment of the present invention;
fig. 4 is a top view of an antenna unit in a 5G directional base station antenna according to a first embodiment of the present invention;
fig. 5 is a top view of a PCB board in a 5G directional base station antenna according to a first embodiment of the present invention;
fig. 6 is a graph of the standing-wave ratio simulation result of the 5G directional base station antenna according to the first embodiment of the present invention;
fig. 7 is a diagram of the isolation simulation result of the 5G directional base station antenna according to the first embodiment of the present invention;
fig. 8 is a simulation result diagram of lobe width of the 5G directional base station antenna on the H plane according to the first embodiment of the present invention;
fig. 9 is a simulation result diagram of lobe width of the 5G directional base station antenna on the E-plane according to the first embodiment of the present invention;
fig. 10 is a simulation result diagram of cross polarization ratio of the 5G directional base station antenna according to the first embodiment of the present invention;
fig. 11 is a graph of the maximum gain of the 5G directional base station antenna according to the first embodiment of the present invention varying with frequency.
Description of reference numerals:
1. an antenna unit;
2. a PCB board;
3. a support; 31. a horizontal support plate; 32. a vertical support plate; 33. a first feed branch; 34. a second feeding branch;
4. an antenna element; 41. a first slit; 42. a second slit; 43. a third gap; 44. a fourth gap; 45. a hollow part; 46. cutting corners;
5. a feed network; 51. a feed port; 52. a one-to-two power divider;
6. a ground plate;
7. the surface is pasted and connected.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The utility model discloses the most crucial design lies in: by arranging the first slot, the second slot, the third slot, the fourth slot and the corner cutting part on the antenna oscillator, the antenna can work in a 3.5G frequency band (3300MHz-3800MHz), and has the characteristics of ultra wide bandwidth, high cross polarization ratio and high isolation.
Referring to fig. 1 to 11, a 5G directional base station antenna includes an antenna unit 1, where the antenna unit 1 includes a support 3, an antenna element 4 is disposed on the support 3, the antenna element 4 is respectively disposed with a first slot 41, a second slot 42, a third slot 43, and a fourth slot 44, the first slot 41 is cross-shaped, the first slot 41 equally divides the antenna element 4 into four radiation portions, and each radiation portion is disposed with a hollow portion 45; the second gap 42 is positioned on one side of the hollow part 45 far away from the first gap 41, and one end of the second gap 42 is communicated with the hollow part 45; the third slit 43 is positioned on one side of the hollow part 45 close to the center of the first slit 41, and one end of the third slit 43 is communicated with the hollow part 45; the fourth slot 44 is disposed near the edge of the antenna element 4, each end of the first slot 41 is provided with a chamfered portion 46, and the middle of the fourth slot 44 is communicated with the first slot 41 through the chamfered portion 46.
From the above description, the beneficial effects of the present invention are:
by arranging the first slot 41, the second slot 42, the third slot 43, the fourth slot 44 and the corner cutting part 46 on the antenna element 4, the antenna can work in a 3.5G frequency band (3300MHz-3800MHz) by adjusting the lengths and the widths of the first slot 41, the second slot 42, the third slot 43, the fourth slot 44 and the corner cutting part 46, the first slot 41 can weaken cross polarization components and reduce the coupling between two polarization channels; the chamfered section 46 is provided so that the gain of the 5G directional base station antenna is within the bandwidth required for operation; the utility model discloses a directional basic station antenna of 5G belongs to the small base station antenna of low section double polarization, and its simple structure is whole small, and the cost of manufacture is low, and easily engineering realizes, is applicable to mass production.
Further, the hollow portion 45 has a circular or polygonal shape.
As can be seen from the above description, the shape of the hollow portion 45 can be set as required, and the size of the hollow portion 45 can also be adjusted as required.
Further, the antenna element 4 is square, the second slots 42 are disposed at four corners of the antenna element 4, the third slots 43 and the second slots 42 are located at a set of diagonal corners of the radiation portion, and the fourth slots 44 are disposed near four sides of the antenna element 4.
As can be seen from the above description, the narrow branch at the fourth slot 44 makes the combined current direction of the antenna element 4 along the narrow branch be +45 ° or-45 ° polarization direction, which can improve the cross polarization ratio of the 5G directional base station antenna; the second slit 42 makes the end current more concentrated on the two sides of the second slit 42, further enhancing the radiation effect and increasing the gain.
Further, the side length of the antenna element 4 is 0.56 times of the wavelength corresponding to 3.5 GHz.
Further, the antenna unit further comprises a PCB (printed circuit board) 2, and the antenna unit 1 is arranged on the PCB 2.
As can be seen from the above description, the PCB board 2 may be provided with corresponding card slots to facilitate the assembly of the antenna unit 1.
Further, support 3 includes horizontal support plate 31 and vertical support plate 32, antenna element 4 set up in horizontal support plate 31 is last, horizontal support plate 31 pass through vertical support plate 32 set up in on the PCB board 2, vertical support plate 32 includes first backup pad and the second backup pad that each other is 90 settings.
Further, a first feeding branch 33 is arranged on the first supporting plate, a second feeding branch 34 is arranged on the second supporting plate, a feeding network 5 is arranged on the PCB 2, and one end of each of the first feeding branch 33 and the second feeding branch 34 is connected with the feeding network 5.
As can be seen from the above description, the end of the first feeding branch 33 connected to the feeding network 5 can be disposed close to the end of the second feeding branch 34 connected to the feeding network 5, so that the coupling can be reduced and the isolation can be improved.
Furthermore, baluns are respectively arranged on the first supporting plate and the second supporting plate, the baluns are located on the side surface of the first supporting plate far away from the first feeding branch 33 and the side surface of the second supporting plate far away from the second feeding branch 34, and the ground plate 6 is further included, and the baluns are connected with the ground plate 6.
As can be seen from the above description, the height of the feed balun may be 0.82 times of the wavelength corresponding to 3.5GHz, so that the height of the 5G directional base station antenna may be lower than that of the conventional directional base station antenna, which is beneficial to implementing miniaturization of the antenna.
Further, the feeding network 5 includes a feeding port 51 and a two-in-one power divider 52, and the feeding port 51 is connected to the first feeding branch 33 or the second feeding branch 34 through the two-in-one power divider 52.
Further, the number of the antenna units 1 is multiple, and the center distance between two antenna units 1 connected to the same one-to-two power divider 52 is 0.8 times of the wavelength corresponding to 3.5 GHz.
As can be seen from the above description, the phases from the antenna ports to the two antenna units 1 are the same, and the two antenna units 1 are guaranteed to have the same amplitude and the same phase, so as to obtain good antenna radiation performance.
Example one
Referring to fig. 1 to 11, a first embodiment of the present invention is: A5G directional base station antenna is particularly suitable for a 3.5G frequency band (3300MHz-3800MHz), as shown in fig. 1, and comprises an antenna unit 1 and a PCB board 2, wherein the antenna unit 1 is arranged on the PCB board 2, the number of the antenna unit 1 can be set according to requirements, and in the embodiment, the number of the antenna unit 1 is two.
As shown in fig. 1 to 3, the antenna unit 1 includes a bracket 3, and an antenna element 4 is disposed on the bracket 3. As shown in fig. 4, the antenna element 4 is provided with a first slot 41, a second slot 42, a third slot 43, and a fourth slot 44, respectively, the first slot 41 is in a cross shape, the first slot 41 equally divides the antenna element 4 into four radiation portions, each radiation portion is provided with a hollow portion 45, and the hollow portion 45 is in a circular or polygonal shape, such as a hexagon. In this embodiment, the antenna element 4 is square, the side length of the antenna element 4 is 0.56 times of the wavelength corresponding to 3.5GHz, and the first slot 41 includes four slot branches, but each slot branch does not penetrate through the four sides of the antenna element 4. The second slot 42 is located on one side of the hollow portion 45 away from the first slot 41, and one end of the second slot 42 is communicated with the hollow portion 45, preferably, the second slot 42 is arranged at four corners of the antenna element 4, and the second slot 42 penetrates through the edge of the corner; the third slit 43 is located on one side of the hollow portion 45 close to the center of the first slit 41, and one end of the third slit 43 is communicated with the hollow portion 45, preferably, the radiating portion is square, the third slit 43 and the second slit 42 are located on a set of diagonal corners of the radiating portion, the third slit 43 is communicated with the first slit 41, in detail, the third slit 43 is rectangular, and the third slit 43 is respectively communicated with two slit branches; the fourth slot 44 is disposed near the edge of the antenna element 4, each end of the first slot 41 is provided with a corner cut portion 46, the middle of the fourth slot 44 is communicated with the first slot 41 through the corner cut portion 46, preferably, the fourth slot 44 is disposed near four sides of the antenna element 4, and the fourth slot 44 is disposed in the middle of the four sides of the antenna element 4.
Referring to fig. 1 and 3, in this embodiment, the bracket 3 includes a horizontal support plate 31 and a vertical support plate 32, the antenna element 4 is disposed on the horizontal support plate 31, the horizontal support plate 31 is disposed on the PCB 2 through the vertical support plate 32, the PCB 2 may be provided with corresponding card slots for fixing and assembling the vertical support plate 32, and the vertical support plate 32 includes a first support plate and a second support plate disposed at 90 ° to each other. Referring to fig. 1, fig. 3 and fig. 5, a first feeding branch 33 is disposed on the first supporting plate, a second feeding branch 34 is disposed on the second supporting plate, a feeding network 5 is disposed on the PCB 2, and one end of the first feeding branch 33 and one end of the second feeding branch 34 are respectively connected to the feeding network 5. The end of the first feeding branch 33 connected to the feeding network 5 is arranged close to the end of the second feeding branch 34 connected to the feeding network 5, so that the coupling can be reduced and the isolation can be improved. The feeding network 5 includes a feeding port 51 and a one-to-two power divider 52, the feeding port 51 is connected to the first feeding branch 33 or the second feeding branch 34 through the one-to-two power divider 52, and the routing of the feeding network 5 may adopt a cable line of 50 Ω. The first support plate and the second support plate are further respectively provided with a balun, the balun is located on a side surface of the first support plate away from the first feeding branch 33 and a side surface of the second support plate away from the second feeding branch 34, and preferably, the height of the feeding balun may be 0.82 times of the wavelength corresponding to 3.5 GHz. In this embodiment, the 5G directional base station antenna further includes a ground plate 6, where the ground plate 6 is disposed on a side of the PCB 2 away from the antenna element 4, and the balun is connected to the ground plate 6; and a surface-mounted connector 7 connected with the feed port 51 is further arranged on one side of the PCB 2, which is far away from the antenna element 4. In this embodiment, the center distance between the two antenna units 1 connected to the same one-to-two power divider 52 is 0.8 times of the wavelength corresponding to 3.5GHz, and the phases from the two antenna units 1 to the feed port 51 are the same, so that the two antenna units 1 are guaranteed to have the same amplitude and the same phase, and good antenna radiation performance is obtained.
Fig. 6 is a standing wave ratio of the 5G directional base station antenna of this embodiment, where VSWR (1) represents the standing wave ratio of one of the feeding ports, and VSWR (2) represents the standing wave ratio of the other feeding port, and it can be seen from the figure that the standing wave ratios of the two polarized ports are less than 1.5, and the matching is good in the frequency range of 3300MHz-3800 MHz.
Fig. 7 is a result of an isolation test of the 5G directional base station antenna of this embodiment, and it can be seen from the figure that the isolation between two ports is greater than 26 dB.
Fig. 8 shows the lobe width of the 5G directional base station antenna in the H plane.
Fig. 9 shows the lobe width of the 5G directional base station antenna in the E plane.
Fig. 10 shows cross polarization ratios of the 5G directional base station antenna of the present embodiment.
Fig. 11 is a curve of the maximum gain of the 5G directional base station antenna of this embodiment with frequency, and it can be seen from the graph that the gain interval is in the range of 11-11.6 dBi.
To sum up, the utility model provides a directional basic station antenna of 5G, its simple structure, whole small, the cost of manufacture is low, possesses the characteristics of ultra wide bandwidth, high cross polarization ratio and high isolation.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a directional basic station antenna of 5G, includes antenna element, antenna element includes the support, be equipped with antenna element on the support, its characterized in that: the antenna oscillator is provided with a first gap, a second gap, a third gap and a fourth gap respectively, the first gap is in a cross shape, the first gap divides the antenna oscillator into four radiation parts on average, and a hollow part is arranged on each radiation part; the second gap is positioned on one side, away from the first gap, of the hollow part, and one end of the second gap is communicated with the hollow part; the third gap is positioned on one side of the hollow part close to the center of the first gap, and one end of the third gap is communicated with the hollow part; the fourth gap is close to the edge of the antenna oscillator, each end of the first gap is provided with a corner cut portion, and the middle of the fourth gap is communicated with the first gap through the corner cut portions.
2. The 5G directional base station antenna of claim 1, wherein: the hollow part is circular or polygonal.
3. The 5G directional base station antenna of claim 1, wherein: the antenna oscillator is square, the second gaps are arranged at four corners of the antenna oscillator, the third gaps and the second gaps are located on a group of diagonal corners of the radiation portion, and the fourth gaps are close to four sides of the antenna oscillator.
4. The 5G directional base station antenna of claim 3, wherein: the side length of the antenna element is 0.56 times of the wavelength corresponding to 3.5 GHz.
5. The 5G directional base station antenna of claim 1, wherein: the antenna unit is arranged on the PCB.
6. The 5G directional base station antenna of claim 5, wherein: the support includes horizontal support plate and vertical support plate, the antenna element set up in on the horizontal support plate, the horizontal support plate passes through the vertical support plate set up in on the PCB board, vertical support plate is including each other for first backup pad and the second backup pad that 90 set up.
7. The 5G directional base station antenna of claim 6, wherein: the PCB board is provided with a feeding network, and one ends of the first feeding branch and the second feeding branch are respectively connected with the feeding network.
8. The 5G directional base station antenna of claim 7, wherein: the first supporting plate and the second supporting plate are respectively provided with a balun which is positioned on the side face of the first supporting plate far away from the first feeding branch and on the side face of the second supporting plate far away from the second feeding branch, the grounding plate is further included, and the balun is connected with the grounding plate.
9. The 5G directional base station antenna of claim 7, wherein: the feed network comprises a feed port and a one-to-two power divider, and the feed port is connected with the first feed branch or the second feed branch through the one-to-two power divider.
10. The 5G directional base station antenna of claim 9, wherein: the number of the antenna units is multiple, and the center distance between two antenna units connected with the same one-to-two power divider is 0.8 times of the wavelength corresponding to 3.5 GHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021730644.3U CN213026482U (en) | 2020-08-14 | 2020-08-14 | 5G directional base station antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021730644.3U CN213026482U (en) | 2020-08-14 | 2020-08-14 | 5G directional base station antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213026482U true CN213026482U (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021730644.3U Active CN213026482U (en) | 2020-08-14 | 2020-08-14 | 5G directional base station antenna |
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| Country | Link |
|---|---|
| CN (1) | CN213026482U (en) |
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2020
- 2020-08-14 CN CN202021730644.3U patent/CN213026482U/en active Active
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