CN206301944U - Multi-input multi-output antenna system and mobile terminal - Google Patents
Multi-input multi-output antenna system and mobile terminal Download PDFInfo
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- CN206301944U CN206301944U CN201621465988.XU CN201621465988U CN206301944U CN 206301944 U CN206301944 U CN 206301944U CN 201621465988 U CN201621465988 U CN 201621465988U CN 206301944 U CN206301944 U CN 206301944U
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Abstract
The application is related to antenna technical field, more particularly to a kind of multi-input multi-output antenna system and mobile terminal.The multi-input multi-output antenna system includes substrate and at least two antenna structures, substrate has feed and earth point, antenna structure includes the first Rotating fields and the second Rotating fields being disposed between the first Rotating fields and substrate, first Rotating fields include the first metal patch and the first short-circuit component, first metal patch has the distributing point and the first ground feed point being connected with feed, the two ends of the first short-circuit component are connected with the first ground feed point and earth point respectively, second Rotating fields include the second metal patch and the second short-circuit component that are coupled with the first metal patch, second metal patch has the second ground feed point, the two ends of the second short-circuit component are connected with the second ground feed point and earth point respectively.Coupled with the first metal patch by the second metal patch, the coupling between each antenna structure can be reduced, so as to increased the isolation between each antenna structure.
Description
Technical field
The application is related to antenna technical field, more particularly to a kind of multi-input multi-output antenna system and mobile terminal.
Background technology
MIMO technique is the key technology in forth generation and future mobile communications field, and it can not increase
Increase the transmission rate of system in the case of the frequency spectrum of power output.Minimized further however as mobile device, and to work(
The requirement of energy module is improved further, and leaving the space of antenna in mobile device for just becomes more to come smaller, while also requiring that antenna has
There is the characteristic of multiple-frequency operation.
Because PIFA antennas (Planar Inverted F Antenna, planar inverted-F antenna) have small volume, multiband
The features such as work, radiation omnidirectional and low human absorptivity, it is set to turn into relatively broad application in the mobile terminals such as mobile phone
A kind of antenna type.But for highly integrated antenna for mobile phone, quarter-wave PIFA antennas are still larger.Remove
Outside this, during PIFA Antenna Operations, stronger electric current can be produced on substrate, when using many multi-input/output antennas
When spacing is nearer between system, and antenna, electric current will flow into the port of another antenna from the port of an antenna, from
And larger coupling is caused, greatly reduce isolation.
Utility model content
This application provides a kind of multi-input multi-output antenna system and mobile terminal, above-mentioned technical problem is can solve the problem that.
The first aspect of the application provides a kind of multi-input multi-output antenna system, and it includes：Substrate and at least two
Antenna structure, the substrate has feed and earth point, and the antenna structure includes the first Rotating fields and the second Rotating fields, described
Second layer spacing structure is arranged between first Rotating fields and the substrate,
First Rotating fields include the first metal patch and the first short-circuit component, and first metal patch has feed
Point and the first ground feed point, the distributing point is connected with the feed, and the two ends of first short-circuit component are respectively with described first
Ground feed point and earth point connection,
Second Rotating fields include the second metal patch and the second short-circuit component, second metal patch and described the
One metal patch is coupled, and second metal patch has the second ground feed point, the two ends of second short-circuit component respectively with
Second ground feed point and the earth point are connected.
Preferably, first metal patch includes multiple metal wires, and multiple metal wires are in turn connected to form spiral
Shape metal patch.
Preferably, multiple metal wires include the metal contact wires with first ground feed point and except the metal connects
Other metal wires beyond wiring, the diameter with diameter greater than other metal wires of the metal contact wires.
Preferably, the distributing point is arranged on the metal contact wires, and the distributing point and first ground feed point
Interval setting.
Preferably, there are at least two distance values between first ground feed point and the distributing point.
Preferably, second ground feed point is arranged on second metal patch away from first ground feed point and the feedback
On the position of electricity point.
Preferably, first metal patch be arranged in parallel with second metal patch.
Preferably, first Rotating fields also include feed probes, the two ends of the feed probes respectively with the feed
Connected with the distributing point.
Preferably, the radiation mode between antenna structure described at least two is orthogonal.
The second aspect of the application provides a kind of mobile terminal, including the multiple-input and multiple-output as described in above-mentioned any one
Antenna system.
The technical scheme that the application is provided can reach following beneficial effect：
Multi-input multi-output antenna system provided herein, its antenna structure includes the first Rotating fields and second layer knot
Structure, the second layer structure setting between the first Rotating fields and substrate, and second Rotating fields the second metal patch and first
The metal patch coupling of Rotating fields, by setting the second Rotating fields and ground floor structure Coupling, on the one hand, realize adding for electric capacity
Carry so that antenna structure realizes good impedance matching at resonant frequency, on the other hand, by the current limit on substrate at this
Around antenna structure, it is to avoid the port of the current direction of the antenna structure other antenna structures, reduce each antenna structure it
Between coupling, so as to increased the isolation between each antenna structure, greatly improve the data transmission rate of communication system.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary, this can not be limited
Application.
Brief description of the drawings
The structural representation of the multi-input multi-output antenna system that Fig. 1 is provided by the embodiment of the present application；
Fig. 2 is the size Expressing figure of the multi-input multi-output antenna system shown in Fig. 1；
In the multi-input multi-output antenna system that Fig. 3 is provided by the embodiment of the present application, the first Rotating fields of antenna structure
The structural representation staggered relatively with the second Rotating fields；
Fig. 4 be Fig. 3 shown in the first Rotating fields, the second Rotating fields and its between size Expressing figure；
Fig. 5 is the overlooking the structure diagram of the antenna structure shown in Fig. 3；
Fig. 6 is the size Expressing figure of the multi-input multi-output antenna system shown in Fig. 5；
The spectrogram of the antenna structure in the multi-input multi-output antenna system that Fig. 7 is provided by the embodiment of the present application；
The emulation and test of the antenna structure in the multi-input multi-output antenna system that Fig. 8 is provided by the embodiment of the present application
S parameter and frequency graph of a relation；
The actual measurement radiation of two resonance points in the multi-input multi-output antenna system that Fig. 9 is provided by the embodiment of the present application
Directional diagram.
Reference：
1- antenna structures；
The metal patches of 11- first；
12- feed probes；
The short-circuit components of 13- first；
The metal patches of 14- second；
The short-circuit components of 15- second；
2- substrates.
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the application
Example, and it is used to explain the principle of the application together with specification.
Specific embodiment
The application is described in further detail below by specific embodiment and with reference to accompanying drawing.
As shown in Fig. 1, Fig. 3 and Fig. 5, the embodiment of the present application provides a kind of multi-input multi-output antenna system, and it includes
The antenna structure of substrate 2 and at least two, the radiation mode between at least two antenna structures is orthogonal, to strengthen between multiple antennas
Polarity diversity, beneficial to the transmission rate of enhancing multi-input multi-output antenna system.
Aforesaid substrate 2 has feed and earth point, and antenna structure includes the first Rotating fields and the second Rotating fields, ground floor knot
Structure includes the first metal patch 11 and the first short-circuit component 13, and the first metal patch 11 has distributing point and the first ground feed point, feedback
Electricity point is connected with feed, and the two ends of the first short-circuit component 13 are connected with the first ground feed point and earth point respectively, first Rotating fields
A planar inverted-F antenna structure can be formed, is the major radiator of the antenna structure, and second layer spacing structure is arranged on first
Between Rotating fields and substrate 2, the second Rotating fields include the second metal patch 14 and the second short-circuit component 15, the second metal patch 14
With the second ground feed point, the two ends of the second short-circuit component 15 are connected with the second ground feed point and earth point respectively, and the second metal is pasted
Piece 14 is fed by way of being coupled with the first metal patch 11, and so design not only realizes the loading of electric capacity so that antenna
Structure realizes good impedance matching at resonant frequency, but also can be by the current limit on substrate 2 in the antenna structure
Around, it is to avoid the port of the current direction of the antenna structure other antenna structures, reduce the coupling between each antenna structure
Property, so as to increased the isolation between each antenna structure, greatly improve the data transmission rate of communication system.
Wherein, according to the specific resonant frequency of antenna structure and match condition, first short-circuit component 13 can be visited for short circuit
Pin or short circuit metallic plate, second short-circuit component 15 can be grounding probe or short circuit metallic plate.
Preferably, above-mentioned first metal patch 11 includes multiple metal wires, and multiple metal wires are in turn connected to form spirality
Metal patch, that is to say, that the shape of first metal patch 11 in the shape of a spiral, is ensureing that the first metal patch 11 is substantially more
During the quarter-wave of the low-frequency resonant frequency for being input into multi-output antenna system, spiral shell is designed to by by the first metal patch 11
Rotation shape metal patch, can greatly reduce the entire length of first metal patch 11 so that being designed with for the antenna structure is beneficial to
Other elements in mobile terminal it is integrated.Because helical structure can produce stronger inductive in itself, therefore, by second
Second metal patch 14 of Rotating fields is coupled with the first metal patch 11 realizes capacitive load, the antenna structure is produced resonance simultaneously
A LC resonance circuit is formed, so that the antenna structure realizes good matching at resonant frequency, and can be by substrate 2
On current limit around the antenna structure, it is to avoid the port of the current direction of the antenna structure other antenna structures, subtract
Coupling between small each antenna structure, so as to increased the isolation between each antenna structure.
Specifically, as shown in fig. 7, dotted line represents the day knot without the second metal patch 14 of loading of the prior art
Structure, solid line represents the antenna structure of the second metal patch of loading 14 in the application, and figure is of the prior art near 0.9GHz
The input impedance value of antenna structure is 80 ohms, and the input impedance value of the antenna structure of the application is close to 0, inductive pole
Big have dropped.At the same time, by setting the second metal patch 14 in the application, second metal patch 14 can be shared greatly
Portion of electrical current, so that the electric current on corresponding substrate 2 reduces, it is to avoid the current direction of the antenna structure other antenna structures
Port, reduces the coupling between each antenna structure.
What deserves to be explained is, above-mentioned first metal patch 11 can also form spirality metal paster by way of cutting,
Preferably, first metal patch 11 is integral type structure, to ensure the structural strength of the first metal patch 11, so as to ensure day
The stability in use of cable architecture.
Further, above-mentioned multiple metal wires include with the first ground feed point metal contact wires and except metal contact wires with
Other outer metal wires, the so diameter with diameter greater than other metal wires of the metal contact wires, design are ensureing the first metal
While paster 11 takes less space, it is possible to increase the area of the first ground feed point, consequently facilitating the first short-circuit component 13 and
One metal patch 11 is connected.
In the application, the distributing point of the first metal patch 11 and the first ground feed point interval setting, and the distributing point is settable
Adjacent with the first ground feed point on the metal contact wires, so design enables that the distributing point forms good incentive action,
Realize impedance matching.
Preferably, between the first ground feed point and distributing point have at least two distance values, that is to say, that the first ground feed point and
The distance between distributing point is not changeless, can be regulation, by adjusting between the first ground feed point and distributing point
Spacing can adjust the situation of the impedance matching of the antenna structure.
Additionally, the second ground feed point on second metal patch 14 of the application is set away from the first ground feed point and distributing point,
Wherein, the second ground feed point is adjustable with the relative position of the first ground feed point and distributing point, can be used to adapt to regulation impedance matching feelings
Condition.
Alternatively, the first metal patch 11 be arranged in parallel with the second metal patch 14, with ensure the second metal patch 14 with
The stiffness of coupling of the first metal patch 11, so that the second Rotating fields and the first Rotating fields realize good matching.
According to one embodiment of the application, the first Rotating fields also include feed probes 12, the two ends point of feed probes 12
It is not connected with feed and distributing point, by setting feed probes 12, the distributing point of the first Rotating fields and the company of feed can be reduced
Connect difficulty.Preferably, feed probes 12 are L-type feed probes 12, simple in holding structure meanwhile, it is capable to realize best
With effect.
A preferred embodiment to the application is described in detail below：
As shown in Figures 1 to 6, a kind of multi-input multi-output antenna system that can be applied to mobile phone, the multiple-input and multiple-output
Antenna system includes：Substrate 2 and two antenna structures, each antenna structure include the first metal patch 11, feed probes 12, the
One short-circuit component 13, the second short-circuit component 15 and the second metal patch 14.It is below mobile phone substrate, the first metal patch with substrate 2
Piece 11 is spirality metal paster, the first short-circuit component 13 is the first grounding probe, the second short-circuit component 15 is that the second short circuit is visited
Pin, as a example by the second metal patch 14 is rectangular metal paster, gives a series of specific of the multi-input multi-output antenna system
Parameter.
The size of mobile phone substrate is 130mm × 60mm.The substrate uses metallized substrate, and the dielectric thickness of its dielectric layer is
0.8mm, it is the FR4 plates that 4.2, loss tangent is 0.02 that can use dielectric constant, and the material of its metal level can be used
Electrical conductivity for 5.8e+007s/m copper, and the mobile phone substrate shape can be rectangle, length and width size can be 130mm ×
60mm。
Two antenna structures are located at same one end of mobile phone substrate and orthogonally located, and between two antenna structures adjacent both sides it
Between spacing be 15 millimeters.
The helix total length of spirality metal paster is 86.5mm, and the width of helix is 0.5mm, is formed after bending
A length of 17.5mm of paster, equivalent to 1/20th wavelength, a width of 5.5mm, equivalent to sixtieth wavelength, this day knot
The lateral dimension of structure has obtained great reduction.And the spirality metal paster is 6mm apart from the height of mobile phone substrate.First is short
Road probe is arranged on one end of helix, apart from the distance of feed probes 123mm.Rectangular metal paster and spirality metal paster
It is arranged in parallel, and the distance between the rectangular metal paster and spirality metal paster are 0.6mm, to form effective electric capacity coupling
Close, the length of rectangular metal paster is 8.5mm, and width is 4.5mm.
For each parameter shown in Fig. 2, Fig. 4 to Fig. 6, the preferred values shown in the preferred table one of the embodiment of the present application：
Table one
With reference to table one, the simulation example that the antenna structure is operated near 900MHz and 2.4GHz is given.Such as Fig. 8
With shown in Fig. 9.The impedance bandwidth of-the 6dB of the antenna structure is 880-945MHz in low-frequency range, is in high-frequency range
2.39GHz-2.48GHz, the isolation between each antenna structure of test is respectively greater than 34dB and 28dB, table in low frequency and high frequency
Mutual coupling between bright each antenna structure is relatively low, and the directional diagram of antenna structure substantially covers upper half-space.Surveyed in low-frequency range
The average gain for obtaining is 0.4dB, and maximum gain is 1.62dB, and in high-frequency work scope, average gain is 1.1dB, wherein maximum
Directive gain is 2.13dB.Antenna structure is respectively 40.9% and 62.8% in the efficiency of two frequency ranges.
The multi-input multi-output antenna system be in summary it can be seen in the case of antenna structure size is less, realized double
Frequency resonance.And because the current limit of the second metal patch 14 is acted on, there is good isolation between each antenna structure.Respectively
Need not be whole multiple-input and multiple-output using any decoupling structure or impedance matching circuit is used between antenna structure
Antenna system saves space and cost.
Present invention also provides a kind of mobile terminal, including the multi-input/output antenna as described in above-mentioned any embodiment
System.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of multi-input multi-output antenna system, it is characterised in that including：Substrate and at least two antenna structures, the base
Plate has feed and earth point, and the antenna structure includes the first Rotating fields and the second Rotating fields, the second layer spacing structure
It is arranged between first Rotating fields and the substrate,
First Rotating fields include the first metal patch and the first short-circuit component, first metal patch have distributing point and
First ground feed point, the distributing point is connected with the feed, and the two ends of first short-circuit component are presented with first ground respectively
Point and earth point connection,
Second Rotating fields include the second metal patch and the second short-circuit component, second metal patch and first gold medal
Category paster coupling, and second metal patch has the second ground feed point, the two ends of second short-circuit component respectively with it is described
Second ground feed point and the earth point are connected.
2. multi-input multi-output antenna system according to claim 1, it is characterised in that
First metal patch includes multiple metal wires, and multiple metal wires are in turn connected to form spirality metal paster.
3. multi-input multi-output antenna system according to claim 2, it is characterised in that multiple metal wires include tool
There are the metal contact wires and other metal wires in addition to the metal contact wires of first ground feed point, the metal contact wires
The diameter with diameter greater than other metal wires.
4. multi-input multi-output antenna system according to claim 3, it is characterised in that the distributing point is arranged on described
On metal contact wires, and the distributing point and the first ground feed point interval setting.
5. multi-input multi-output antenna system according to claim 4, it is characterised in that first ground feed point and described
There are at least two distance values between distributing point.
6. multi-input multi-output antenna system according to claim 4, it is characterised in that
Second ground feed point is arranged on second metal patch away from first ground feed point and the position of the distributing point
On.
7. multi-input multi-output antenna system according to any one of claim 1 to 6, it is characterised in that
First metal patch be arranged in parallel with second metal patch.
8. multi-input multi-output antenna system according to any one of claim 1 to 6, it is characterised in that described first
Rotating fields also include feed probes, and the two ends of the feed probes are connected with the feed and the distributing point respectively.
9. multi-input multi-output antenna system according to any one of claim 1 to 6, it is characterised in that
Radiation mode between antenna structure described at least two is orthogonal.
10. a kind of mobile terminal, it is characterised in that including multiple-input and multiple-output as claimed in any one of claims 1-9 wherein day
Linear system is united.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621465988.XU CN206301944U (en) | 2016-12-29 | 2016-12-29 | Multi-input multi-output antenna system and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621465988.XU CN206301944U (en) | 2016-12-29 | 2016-12-29 | Multi-input multi-output antenna system and mobile terminal |
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| Publication Number | Publication Date |
|---|---|
| CN206301944U true CN206301944U (en) | 2017-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621465988.XU Expired - Fee Related CN206301944U (en) | 2016-12-29 | 2016-12-29 | Multi-input multi-output antenna system and mobile terminal |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018119944A1 (en) * | 2016-12-29 | 2018-07-05 | 深圳天珑无线科技有限公司 | Multi-input multi-output antenna system and mobile terminal |
| CN113629392A (en) * | 2021-08-17 | 2021-11-09 | 安徽安努奇科技有限公司 | Antenna unit, antenna system and terminal equipment |
-
2016
- 2016-12-29 CN CN201621465988.XU patent/CN206301944U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018119944A1 (en) * | 2016-12-29 | 2018-07-05 | 深圳天珑无线科技有限公司 | Multi-input multi-output antenna system and mobile terminal |
| CN113629392A (en) * | 2021-08-17 | 2021-11-09 | 安徽安努奇科技有限公司 | Antenna unit, antenna system and terminal equipment |
| CN113629392B (en) * | 2021-08-17 | 2023-10-17 | 安徽安努奇科技有限公司 | Antenna unit, antenna system and terminal equipment |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170704 Termination date: 20181229 |
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| CF01 | Termination of patent right due to non-payment of annual fee |