CN208157622U - A kind of 5G mimo antenna structure - Google Patents
A kind of 5G mimo antenna structure Download PDFInfo
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- CN208157622U CN208157622U CN201820484327.4U CN201820484327U CN208157622U CN 208157622 U CN208157622 U CN 208157622U CN 201820484327 U CN201820484327 U CN 201820484327U CN 208157622 U CN208157622 U CN 208157622U
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Abstract
The utility model discloses a kind of 5G mimo antenna structures, including pcb board and more than one first antenna component, more than one first antenna component to be arranged at intervals on the pcb board；The first antenna component includes feed branch and the first radiator being coupled respectively with feed branch and two the second radiators, and first radiator is inverted U-shaped structure, and two ends of first radiator are connected with the grounding point on pcb board；The feed branch is located in first radiator and corresponding with the position of the feeding point on pcb board；Two the second radiators are respectively positioned in first radiator and connect with the first radiator, and two the second radiators are located at the two sides of the feed branch.5G mimo antenna structure provided by the utility model not only has good radiation effect, can satisfy the requirement of 6GHz 5G system below, and isolation is good, and size can also greatly reduce, and meet the pursuit currently for small size.
Description
Technical field
The utility model relates to wireless communication technology field more particularly to a kind of 5G mimo antenna structures.
Background technique
With the fast development of wireless communication technique, the 5th generation (5G) wireless communication system will be gradually commercialized.5G is wireless
Communication system mainly uses following two frequency range：The millimeter wave frequency band of 6GHz low-frequency range below and 6GHz or more.And 3.5GHz
It will be as one of the main 5G frequency range of 6GHz or less and 6GHz or more millimeter wave with 28GHz.5G system below for 6GHz
System, MIMO (Multiple-Input Multiple-Output) antenna will be used, and increase transmission in 5G system to reach
The purpose of rate.
In order to reach the requirement of 5G transmission rate, the number of mimo antenna generally will be at 8 or so, due to handheld device ratio
Space such as mobile phone is limited, therefore the antenna for how designing small size will be to be faced in the design of mimo antenna system one
A matter of utmost importance.In addition, the mimo antenna system another question also to be faced is the isolation how reduced between antenna.
The problem of reducing the isolation between antenna, has been extensively studied and had discussed, such as by between two adjacent antennas
Be added isolating bar, gap of cracking on the pcb board of system, using isolation network, be added have in isolation effect between antennas
With line etc..No matter using which kind of above-mentioned design, it can all increase the complexity of antenna and the difficulty of design, while can also be the later period
Debugging increase difficulty.
Utility model content
Technical problem to be solved in the utility model is：A kind of 5G mimo antenna structure is provided, is not only simple in structure,
With lesser size, and can be good at solving the problems, such as isolation.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of 5G mimo antenna structure, including pcb board and more than one first antenna component, more than one first
Antenna module is arranged at intervals on the pcb board；The first antenna component include feed branch and respectively with feed branch
The first radiator being coupled and two the second radiators, first radiator are inverted U-shaped structure, first radiation
Two ends of body are connected with the grounding point on pcb board；The feed branch be located in first radiator and on pcb board
The position of feeding point is corresponding；Two the second radiators are respectively positioned in first radiator and connect with the first radiator,
Two the second radiators are located at the two sides of the feed branch.
Further, the top of the second radiator is connected to the first radiator, between the bottom end and pcb board of the second radiator
Equipped with spacing.
Further, the feed branch is T-type.
Further, the first antenna component is axially symmetric structure, and symmetry axis is the center line of the feed branch.
Further, the even number that the number of the first antenna component is four or more, more than four even numbers first day
Line component is symmetrically distributed in the opposite sides of the pcb board.
Further, the centre at the top of first radiator is equipped with gap, so that the U-shaped structure is divided into two points
From L-type structure.
It further, further include the second antenna module and third antenna component, second antenna module and third antenna
Component is respectively arranged at the opposite end of the pcb board, and the first antenna component is set to the centre of the pcb board.
Further, second antenna module and third antenna component are respectively arranged at a left side for the first antenna component
Side and right side, the structure of second antenna module is identical as the structure of right half part of the first antenna component, and described
The structure of triantennary component is identical as the structure of left-half of the first antenna component.
It further, further include plastic rubber bracket, the first antenna component, the second antenna module and third antenna component are equal
It is fixed on the plastic rubber bracket.
Further, described two L-type structures are symmetrical relative to the gap.
The beneficial effects of the utility model are：The first radiator of antenna and pcb board in the utility model surround an envelope
Close structure, first antenna radiator other than having the function of aerial radiation, while also act with adjacent antenna elements it
Between buffer action, so that antenna module is had the characteristics that self-isolation；The introducing of second radiator so that antenna module electric current road
The effective length of diameter obviously increases, and the effective length of antenna is longer, the size of antenna can do it is smaller, with traditional day
Cable architecture is compared, and the length of the antenna module of the utility model is obviously reduced.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the 5G mimo antenna structure of the utility model embodiment one；
Fig. 2 is the side view of the 5G mimo antenna structure of the utility model embodiment one；
Fig. 3 is the S- Parameter Map of the 5G mimo antenna structure of the utility model embodiment one；
The radiation efficiency and antenna total efficiency that Fig. 4 is the 5G mimo antenna structure of the utility model embodiment one are with frequency
The curve graph of variation
Fig. 5 is current distributing figure when two antenna first assemblies in the utility model embodiment one work respectively；
Fig. 6 is the structural schematic diagram of traditional antenna；
Fig. 7 is that the 5G mimo antenna structure of the utility model embodiment one and the return loss of traditional antenna compare figure；
Fig. 8 is the 5G mimo antenna structure of the utility model embodiment one and the current distribution comparison diagram of traditional antenna；
Fig. 9 is the 5G mimo antenna structural side view of the utility model embodiment two；
Figure 10 is the 5G mimo antenna structural side view of the utility model embodiment three；
Label declaration：
1, pcb board；2, first antenna component；21, feed branch；22, the first radiator；23, the second radiator；24, it stitches
Gap；3, the second antenna module；4, third antenna component.
Specific embodiment
For technology contents, the objects and the effects that the utility model is described in detail, below in conjunction with embodiment and match
Attached drawing is closed to be explained.
The design of the utility model most critical is:One inverted the first U-shaped radiator 22, the first radiator are set
22 two ends are connect with pcb board 1, are provided with feed branch 21 and two the second radiators 23 in the first radiator 22, and two
Second radiator 23 is located at the left and right sides of feed branch 21, and one end of the second radiator 23 and the first radiator 22 connect
It connects.
Please refer to Fig. 1 and Fig. 2, a kind of 5G mimo antenna structure, including pcb board 1 and more than one first antenna group
Part 2, more than one first antenna component 2 are arranged at intervals on the pcb board 1；The first antenna component 2 includes feed point
Branch 21 and the first radiator 22 and two the second radiators 23 being coupled respectively with feed branch 21, first radiator
22 be inverted U-shaped structure, and two ends of first radiator 22 are connected with the grounding point on pcb board 1；The feed branch
21 is in first radiator 22 and corresponding with the position of feeding point on pcb board 1；Two equal positions of the second radiator 23
It is connect in first radiator 22 and with the first radiator 22, two the second radiators 23 are located at the feed point
The two sides of branch 21.
As can be seen from the above description, the beneficial effects of the utility model are：The first radiator of antenna in the utility model
22 surround an enclosed construction with pcb board 1, and first antenna radiator also acts as simultaneously other than having the function of aerial radiation
Buffer action between adjacent antenna elements, makes antenna module have the characteristics that self-isolation；The introducing of second radiator 23
So that the effective length of the current path of antenna module obviously increases, and the effective length of antenna is longer, and the size of antenna can
Smaller with what is done, compared with traditional antenna structure, the length of the antenna module of the utility model is obviously reduced.
Further, the top of the second radiator 23 is connected to the first radiator 22, the bottom end of the second radiator 23 and PCB
Spacing is equipped between plate 1.
Seen from the above description, the second radiator 23 is combined with the first radiator 22, and the active path of electric current can be made to increase.
Further, the feed branch 21 is T-type.
Further, the first antenna component 2 is axially symmetric structure, and symmetry axis is the center of the feed branch 21
Line.
Seen from the above description, the electric current effective length of the left and right sides of first antenna component 2 is able to maintain unanimously.
Further, the even number that the number of the first antenna component 2 is four or more, four or more even number first antenna
Component 2 is symmetrically distributed in the opposite sides of the pcb board 1.
Seen from the above description, 5G 8x8MIMO antenna system is relatively specific for handheld device, the left and right sides of pcb board 1
Multiple first antenna components 2 are respectively set, the interval between multiple first day component can be uniformly or uneven.
Further, the centre at the top of first radiator 22 is equipped with gap 24, so that the U-shaped structure is divided into two
A isolated L-type structure.
Seen from the above description, a small gap 24 is opened in the centre of the first radiator of antenna 22, it can be to antenna
Resonance frequency be finely adjusted.
It further, further include the second antenna module 3 and third antenna component 4, second antenna module 3 and third day
Line component 4 is respectively arranged at the opposite end of the pcb board 1, and the first antenna component 2 is set in the pcb board 1
Between.
Seen from the above description, because of the small size of first antenna component 2 and self-isolation feature, by first antenna component 2
Setting can make entire antenna structure have small size, and each antenna between the second antenna module 3 and third antenna component 4
Component can be mutually isolated with adjacent antenna module.
Further, second antenna module 3 and third antenna component 4 are respectively arranged at the first antenna component 2
Left and right side, the structure of second antenna module 3 is identical as the structure of right half part of the first antenna component 2,
The structure of the third antenna component 4 is identical as the structure of left-half of the first antenna component 2.
Seen from the above description, in the antenna structure, the second antenna module 3 and third antenna component 4 only use respectively
The half of first antenna component 2, and the second antenna module 3 is adjacent with left one side of something of first antenna component 2, with first antenna component
It is back-to-back setting between 2 left one side of something, there is good isolation between the two；Similarly third antenna component 4 and first day
Right one side of something of line component 2 is adjacent, is back-to-back setting between right one side of something of first antenna component 2, also has between the two very
Good isolation；Identical radiation effect can not only be reached, and the overall dimensions of the antenna structure can be further decreased.
It further, further include plastic rubber bracket, the first antenna component 2, the second antenna module 3 and third antenna component
4 are both secured on the plastic rubber bracket.
Further, described two L-type structures are symmetrical relative to the gap.
Seen from the above description, have apertured first antenna component and still maintain bilateral symmetry.
Embodiment one
Referring to Fig.1 and 2, the embodiments of the present invention one are：A kind of 5G mimo antenna structure, is mainly used for hand
The 5G of the communication apparatus such as machine is communicated, and will be coexisted with 4G LTE communication system (and other antennas such as GPS etc.), existing 4G LTE
Antenna has been placed on two short sides of mobile phone, and therefore, the optimum position that 5G mimo antenna system is placed in mobile phone will be
Two long sides of mobile phone.
The 5G mimo antenna structure mainly includes pcb board 1 and more than one first antenna component 2, and more than one
One antenna module 2 is arranged at intervals on the pcb board 1.In the present embodiment, the size of the pcb board 1 is 150mm
X75mmx0.8mm, the number of the first antenna component 2 are eight, and eight first antenna components 2 are symmetrically distributed in the PCB
Two long edge positions of plate 1, it is every on one side on first antenna component 2 between interval it is uniform.
The feed branch 21 of the first antenna component 2 including T-type and be coupled respectively with feed branch 21 first
Radiator 22 and two the second radiators 23.The feed branch 21, the first radiator 22 and the second radiator 23 rely on
On plastic rubber bracket.First radiator 22 is inverted U-shaped structure, on two ends of first radiator 22 and pcb board 1
Grounding point be connected；The feed branch 21 is located in first radiator 22 and the position phase with the feeding point on pcb board 1
It is corresponding；Two the second radiators 23 are respectively positioned in first radiator 22 and connect with the first radiator 22, two second
Radiator 23 is located at the two sides of the feed branch 21.Second radiator 23 can be linear type, or non-
Linear type.Preferably, second radiator 23 is rectilinear structure, the two sides of the second radiator 23 and the first radiator 22
It is parallel；The top of second radiator 23 is connected to the first radiator 22, sets between the bottom end and pcb board 1 of the second radiator 23
There is spacing.The first antenna component 2 is axially symmetric structure, and symmetry axis is the center line of the feed branch 21.
The distance between the length of first antenna component 2 namely two grounding points of the first radiator of antenna 22, with L table
Show.By adjust antenna feed branch 21 and the first coupled radiator 22, the second radiator 23 size and it
The distance between, required resonance frequency in 5G mimo antenna system will be generated.In the case where L=17.5mm,
We emulate the 8x8MIMO antenna, and obtain following result：Fig. 3 is four first antenna groups on PCB single side
S- Parameter Map (the note of part 2：Since the 5G mimo antenna structure has the symmetry centered on pcb board 1, so in above-mentioned figure
Only give necessary antenna element as a result, similarly hereinafter).As can be seen from Figure 3 the working range of the antenna is in 3.4-3.6GHz
Between, while the isolation between antenna can meet the design requirement of mimo antenna system close to 20dB or so well.By
It is in Fig. 3 the result is that the distance between the feeding point of 4 antenna elements obtains when equidistant, therefore between antenna every
Can also further it be optimized by suitably adjusting the distance between antenna element from degree.
Fig. 4 is the radiation efficiency and antenna total efficiency curve graph varying with frequency of antenna.Figure 4, it is seen that day
When the frequency of line is in the range of 3.4-3.6GHz, antenna total efficiency is better than 60%.The antenna index provided in Fig. 3 and Fig. 4
It can satisfy requirement of the 6GHz 5G mimo antenna structure below in mobile phone completely.
By observing and analyzing the antenna electric when frequency is 3.5GHz of four first antenna components 2 in 1 a side of pcb board
The distribution map on different antennae unit is flowed, can intuitively find out the working principle of the antenna structure.To put it more simply, we will
The case where when only worked respectively the first two first antenna component 2, is analyzed and is discussed.Fig. 5 is the first two first antenna component
The current distributing figure of 2 antennas when working respectively, we can be clearly seen that the maximum intensity of current distribution will be concentrated from Fig. 5
In the inside of work antenna module, rather than as the bad mimo antenna system of isolation, there are very strong electric current or energy to seep
It arrives in the antenna element adjacent with working cell thoroughly.This is also exactly in the antenna system of this case proposition with the original being isolated well
Cause, particularly due to the first radiator 22 of the utility model first antenna component 2 is other than having the function of aerial radiation, together
When also act the effect being isolated between adjacent antenna elements.Based on reason above, we can claim this case to propose
Antenna structure has the characteristics that self-isolation.
The antenna structure of the utility model main cause with a smaller size be because the second radiator 23 introducing or
Use, in order to illustrate second radiator in the effect and effect for reducing antenna size, we are by the day knot of the utility model
Structure is compared and analyzes with traditional antenna (only the first radiator 22 is without the second radiator 23), and Fig. 6 is traditional antenna
Side structure schematic diagram, with the utility model proposes small-sized antenna structure it is roughly the same, which still has a T-type
Feed branch 21 and first radiator 22, and the both ends of the first radiator of antenna 22 are still connected with the ground of pcb board 1
It connects.The distance between the length of conventional antenna structures namely antenna 22 two grounding points of the first radiator, are indicated, simultaneously with L1
The height of antenna remains unchanged.Fig. 7 compares the antenna structure of the utility model and the return loss pair of traditional antenna structure
Than figure, as can be seen from Figure 7 the antenna structure of this case and traditional antenna structure work in the frequency range of 3.4-3.6GHz,
But this of the traditional antenna in Fig. 7 under conditions of L1 length is 25mm the result is that obtain.Therefore with traditional day knot
Structure is compared, and the antenna structure of the utility model can make the length of antenna reduce 30% or so.In order to further illustrate this case day
Cable architecture has the reason of small size, and Fig. 8 gives the first antenna component 2 of the utility model and traditional antenna component is working
Frequency is the current distributing figure of 3.5GHz.As can be seen from Figure 8, the either day of conventional antenna structures or the utility model
Cable architecture, since the symmetry of antenna causes the electric current at the central point M of antenna to be always 0.But for traditional antenna and
The current path of speech, antenna is ABM, and the intensity of electric current from A point to M point is gradually become smaller up to being 0.In contrast, originally
Current strength of the antenna structure of utility model at D point and the current strength at M point make a big difference：Electric current at M point
It is not zero for the electric current at 0 but D point and relatively strong.Therefore, in the antenna structure of the utility model, there are two roads for electric current
Diameter：ABCD and ABCM, and due to current strength, ABCD is the predominating path of electric current.This above-mentioned feature will be straight
Connecing leads to following result：Compared with traditional antenna structure, the effective length of the current path of the utility model antenna structure
Obviously increase (note：Here effective length refers to the superposition of the physical length and current strength of antenna), in the physics of radiator
In the case that length is fixed, the electric current passed through is stronger, and the effective length of antenna is longer；The effective length of antenna is longer, antenna
Size can be made smaller.Therefore, compared with traditional antenna structure, the length of the antenna structure of the utility model can be with
Significantly it is reduced.
Embodiment two
Referring to FIG. 9, the present embodiment is the improvement carried out on the basis of example 1：In the present embodiment, described
The centre at the top of the first radiator 22 of one antenna module 2 is equipped with gap 24, so that the U-shaped structure is divided into two separation
L-type structure, described two L-type structures are symmetrical relative to the gap.Be arranged the gap 24 can resonance frequency to antenna into
Row fine tuning, but there is still a need for retain for the symmetrical characteristic of antenna.
Embodiment three
Referring to FIG. 10, the present embodiment is the improvement carried out on the basis of example 2：In the present embodiment, described
The number of one antenna module 2 is four, and in addition the 5G mimo antenna structure further includes two the second antenna modules 3 and two the
Triantennary component 4, second antenna module 3 and third antenna component 4 are respectively arranged at the opposite end of the pcb board 1, institute
State the centre that first antenna component 2 is set to the pcb board 1.As shown in Figure 10, second antenna module 3 and third antenna
Component 4 is respectively arranged at the left and right side of the first antenna component 2, the structure of second antenna module 3 and described the
The structure of the right half part of one antenna module 2 is identical, the structure of the third antenna component 4 and the first antenna component 2
The structure of left-half is identical.It is this to be also applied in the first radiator 22 at mobile phone both ends using the design of antenna structure half
Between the case where not being provided with micro gap 24.The present embodiment can be further reduced the overall dimensions of 5G mimo antenna structure.
In conclusion 5G mimo antenna structure provided by the utility model not only has good radiation effect, Neng Gouman
The requirement of sufficient 6GHz 5G system below, and isolation is good, and size can also greatly reduce, and meet currently for small size
Pursuit.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalents made based on the specification and figures of the utility model are applied directly or indirectly in relevant technology neck
Domain is also included in the patent protection scope of the utility model.
Claims (10)
1. a kind of 5G mimo antenna structure, which is characterized in that including pcb board and more than one first antenna component, one with
On first antenna component be arranged at intervals on the pcb board；The first antenna component include feed branch and respectively with
The first radiator and two the second radiators that feed branch is coupled, first radiator is inverted U-shaped structure, described
Two ends of the first radiator are connected with the grounding point on pcb board；The feed branch be located in first radiator and with
The position of feeding point on pcb board is corresponding；Two the second radiators be respectively positioned in first radiator and with the first spoke
Beam connection, two the second radiators are located at the two sides of the feed branch.
2. 5G mimo antenna structure as described in claim 1, which is characterized in that the top of second radiator is connected to
First radiator is equipped with spacing between the bottom end of the second radiator and the pcb board.
3. 5G mimo antenna structure as described in claim 1, which is characterized in that the feed branch is T-type.
4. 5G mimo antenna structure as described in claim 1, which is characterized in that the first antenna component is axial symmetry knot
Structure, symmetry axis are the center line of the feed branch.
5. 5G mimo antenna structure as described in claim 1, which is characterized in that the number of the first antenna component is four
Above even number, and four or more even number first antenna component is symmetrically distributed in the opposite sides of the pcb board.
6. 5G mimo antenna structure as described in claim 1, which is characterized in that the centre at the top of first radiator
Equipped with gap, so that the U-shaped structure is divided into the L-type structure of two separation.
7. 5G mimo antenna structure as described in claim 1 or 6, which is characterized in that further include the second antenna module and third
Antenna module, second antenna module and third antenna component are respectively arranged at the opposite end of the pcb board, and described first
Antenna module is set to the centre of the pcb board.
8. 5G mimo antenna structure as claimed in claim 7, which is characterized in that second antenna module and third antenna
Component is respectively arranged at the left and right side of the first antenna component, the structure of second antenna module with described first day
The structure of the right half part of line component is identical, the left-half of the structure of the third antenna component and the first antenna component
Structure it is identical.
9. 5G mimo antenna structure as claimed in claim 7, which is characterized in that it further include plastic rubber bracket, the first antenna
Component, the second antenna module and third antenna component are both secured on the plastic rubber bracket.
10. 5G mimo antenna structure as claimed in claim 6, which is characterized in that described two L-type structures are relative to described
Gap is symmetrical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820484327.4U CN208157622U (en) | 2018-04-08 | 2018-04-08 | A kind of 5G mimo antenna structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820484327.4U CN208157622U (en) | 2018-04-08 | 2018-04-08 | A kind of 5G mimo antenna structure |
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| CN208157622U true CN208157622U (en) | 2018-11-27 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493600A (en) * | 2018-04-08 | 2018-09-04 | 深圳市信维通信股份有限公司 | A kind of 5G mimo antennas structure |
| CN110112559A (en) * | 2019-06-05 | 2019-08-09 | 西安电子科技大学 | A kind of eight unit MIMO terminal antenna of miniaturized dual-band suitable for 5G |
| CN110350312A (en) * | 2019-07-04 | 2019-10-18 | 北京理工大学 | A kind of 5G mobile terminal mimo antenna based on circuit decoupling |
| CN111490360A (en) * | 2019-01-29 | 2020-08-04 | 中兴通讯股份有限公司 | Terminal antenna and terminal |
| CN112117539A (en) * | 2020-08-13 | 2020-12-22 | 西北工业大学 | High-isolation 5G broadband MIMO antenna system |
| WO2020258199A1 (en) * | 2019-06-28 | 2020-12-30 | 瑞声声学科技(深圳)有限公司 | Pcb antenna |
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2018
- 2018-04-08 CN CN201820484327.4U patent/CN208157622U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493600A (en) * | 2018-04-08 | 2018-09-04 | 深圳市信维通信股份有限公司 | A kind of 5G mimo antennas structure |
| CN108493600B (en) * | 2018-04-08 | 2024-01-16 | 深圳市信维通信股份有限公司 | 5G MIMO antenna structure |
| CN111490360A (en) * | 2019-01-29 | 2020-08-04 | 中兴通讯股份有限公司 | Terminal antenna and terminal |
| CN110112559A (en) * | 2019-06-05 | 2019-08-09 | 西安电子科技大学 | A kind of eight unit MIMO terminal antenna of miniaturized dual-band suitable for 5G |
| WO2020258199A1 (en) * | 2019-06-28 | 2020-12-30 | 瑞声声学科技(深圳)有限公司 | Pcb antenna |
| CN110350312A (en) * | 2019-07-04 | 2019-10-18 | 北京理工大学 | A kind of 5G mobile terminal mimo antenna based on circuit decoupling |
| CN110350312B (en) * | 2019-07-04 | 2020-08-25 | 北京理工大学 | 5G mobile terminal MIMO antenna based on circuit decoupling |
| CN112117539A (en) * | 2020-08-13 | 2020-12-22 | 西北工业大学 | High-isolation 5G broadband MIMO antenna system |
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