CN207587972U - A kind of mimo antenna and the electronic product with metal edge frame - Google Patents
A kind of mimo antenna and the electronic product with metal edge frame Download PDFInfo
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- CN207587972U CN207587972U CN201721869721.1U CN201721869721U CN207587972U CN 207587972 U CN207587972 U CN 207587972U CN 201721869721 U CN201721869721 U CN 201721869721U CN 207587972 U CN207587972 U CN 207587972U
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Abstract
The utility model discloses a kind of mimo antennas, applied to the electronic product with metal edge frame, including dielectric-slab, the earth plate that is set to dielectric-slab one side, at least two antenna radiation units for being set to dielectric-slab another side, antenna radiation unit includes feed branch and short circuit branch, and grounded metal patch corresponding on earth plate, metal edge frame are provided with the ground strip identical with antenna radiation unit quantity so that the electric current of metal edge frame is introduced earth plate with the gap of earth plate.By setting ground strip, when loading excitation, the electric current of metal edge frame can be introduced earth plate, electric current be avoided to pass through human body antenna performance to be caused to decline.In addition, this antenna ensure that the integrality of metal edge frame, the stability of electronic product entirety is enhanced, finally, antenna radiation unit so that the occupied area of mimo antenna is smaller using coupling feed way.Electronic product disclosed in the utility model with metal edge frame, equally with above-mentioned advantageous effect.
Description
Technical field
The utility model is related to radio frequency arts, more particularly to a kind of mimo antenna and the electronics with metal edge frame
Product.
Background technology
As smart mobile phone integrates more and more functions and people to network increasingly higher demands, existing intelligence hand
In machine design, generally use mimo antenna, this is because mimo antenna can preferably lifting system gulp down in a limited space
The amount of spitting improves the network performance of product.
As the medium of wireless network transmissions information, the quality of antenna system performance directly determines the stabilization of wireless system
Property.Current smart mobile phone majority is metal edge frame, although the mobile phone of metal edge frame is either in texture drop resistant performance
There is big advantage, but due to the influence of metal edge frame, when human body is close, antenna easily by body effect, leads to day
The performance of line drastically declines, and therefore, the smart mobile phone of current metal edge frame has opening, and supplemented with non-metallic material, pole
The big integrality for affecting frame.
It can be seen that how to overcome influence of the human body to the antenna performance of the electronic product with metal edge frame is this field
Technical staff's urgent problem to be solved.
Utility model content
The purpose of this utility model is to provide a kind of mimo antenna and the electronic product with metal edge frame, for overcoming people
The influence of the antenna performance of body pair.
In order to solve the above technical problems, the utility model provides a kind of mimo antenna, applied to the electricity with metal edge frame
Sub- product including dielectric-slab, the earth plate that is set to the dielectric-slab one side, is set at least the two of the dielectric-slab another side
A antenna radiation unit, feed branch and short circuit branch of the antenna radiation unit including using coupling feed way, and with
The gap of corresponding grounded metal patch on the earth plate, the metal edge frame and the earth plate be provided with it is described
The identical ground strip of antenna radiation unit quantity by the electric current of the metal edge frame to introduce the earth plate.
Preferably, the antenna radiation unit is specially two, and the grounded metal patch is two, and the ground strip is
Two.
Preferably, the antenna radiation unit is respectively arranged at same cornerwise both ends of the dielectric-slab.
Preferably, two ground strips are respectively arranged at two long sides of the earth plate and the seam of the metal edge frame
Gap, wherein, the dielectric-slab is rectangle.
Preferably, two ground strips are respectively positioned on the middle part of the long side of the earth plate at respective place.
Preferably, the feed branch specifically includes the first L-type metal patch, 90 degree of bending metal patches and rectangular metal
Patch, the end of the long side of the first L-type metal patch are connect with the first end of described 90 degree bending metal patches, and described 90
The second end of degree bending metal patch is connect with one end of the rectangular metal patch；
The short circuit branch is the second L-type metal patch, the short side of the second L-type metal patch and first L-type
The short side of metal patch is parallel and is reserved with gap, the long side of the second L-type metal patch and the first L-type metal patch
Long side it is parallel with the long side of the rectangular metal patch.
Preferably, the earth plate is printed on the dielectric-slab.
Preferably, the dielectric constant of the dielectric-slab is 4.4, and loss tangent angle is 0.02.
In order to solve the above technical problems, the utility model provides a kind of electronic product with metal edge frame, including electronics
Product ontology further includes mimo antenna described above.
Mimo antenna provided by the utility model applied to the electronic product with metal edge frame, including dielectric-slab, is set
It is placed in the earth plate of dielectric-slab one side, at least two antenna radiation units for being set to dielectric-slab another side, antenna radiation unit
Including feed branch and short circuit branch, and grounded metal patch corresponding on earth plate, metal edge frame and earth plate
Gap is provided with the ground strip identical with antenna radiation unit quantity so that the electric current of metal edge frame is introduced earth plate.Pass through setting
The electric current of metal edge frame when loading excitation, can be introduced earth plate, electric current be avoided to pass through human body to cause antenna by ground strip
Hydraulic performance decline.In addition, this antenna ensure that the integrality of metal edge frame, the stability of electronic product entirety, finally, day are enhanced
Beta radiation unit so that the occupied area of mimo antenna is smaller using coupling feed way.It is provided by the utility model to have
The electronic product of metal edge frame, equally with above-mentioned advantageous effect.
Description of the drawings
In order to illustrate more clearly of the utility model embodiment, letter will be done to attached drawing needed in the embodiment below
Single introduction, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the utility model, general for this field
For logical technical staff, without creative efforts, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the structure chart of earth plate in a kind of mimo antenna that the utility model embodiment provides；
Fig. 2 is the structure chart of dielectric-slab in a kind of mimo antenna that the utility model embodiment provides；
Fig. 3 is the simulation comparison schematic diagram of a kind of mimo antenna that the utility model embodiment provides；
Fig. 4 is actual test and the emulation testing for the isolation of a kind of mimo antenna that the utility model embodiment provides
Comparison diagram；
Fig. 5 is human body and mobile phone location relation schematic diagram.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than all real
Apply example.Based on the embodiment in the utility model, those of ordinary skill in the art without making creative work, institute
The every other embodiment obtained, belongs to scope of protection of the utility model.
The core of the utility model is to provide a kind of mimo antenna and the electronic product with metal edge frame, for overcoming people
Influence of the body to the antenna performance of the electronic product with metal edge frame.
In order to which those skilled in the art is made to more fully understand the utility model, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in further detail for mode.
Fig. 1 is the structure chart of earth plate in a kind of mimo antenna that the utility model embodiment provides.Fig. 2 is new for this practicality
The structure chart of dielectric-slab in a kind of mimo antenna that type embodiment provides.In specific implementation, it is only necessary to be placed on figure according to by Fig. 2
Combination on 1 can be obtained by mimo antenna.The antenna applications are in the electronic product with metal edge frame, such as Fig. 1 and 2 institutes
Show, the antenna include dielectric-slab 10, be set to dielectric-slab one side earth plate 20, be set at least the two of 10 another side of dielectric-slab
A antenna radiation unit 30, antenna radiation unit 30 are included using coupling feed way feed branch 31 and short circuit branch 32, and
Grounded metal patch 21 corresponding on earth plate 20 is fed, and metal edge frame 40 and the gap of earth plate 20 are provided with and antenna spoke
The identical ground strip 50 of 30 quantity of unit is penetrated so that the electric current of metal edge frame is introduced earth plate 20.
It should be noted that since the antenna radiation unit 30 in mimo antenna can be selected according to different application demands
Suitable position specifically may refer to the set-up mode of the prior art, its concrete structure the present embodiment is not construed as limiting.Having
During body is implemented, length of the feed branch 31 usually than short circuit branch 32 is long, this is because feed branch 31 needs to swash by loading
It encourages and generates resonance point in a certain frequency using the length of itself, for example, generating resonance point in 2500MHz, resonance covers
LTE2500 frequency ranges.When feed branch 31, which loads, to encourage, short circuit branch 32 and grounded metal sheet 21 are affected by excitation, this
When electric current be mainly distributed between short circuit branch 32 and grounded metal sheet 21, between short circuit branch 32 and grounded metal sheet 21 can exist
Resonance point is generated at another frequency, for example, generating resonance point at 850MHz.In addition, feed branch 31 and short circuit branch 32 are straight
Resonance point can also be generated in a certain frequency by connecing the mode of coupling, for example, generating resonance point respectively in 2300MHz.It is appreciated that
, the coupling feed way of feed branch 31 and short circuit branch 32 can reduce the area occupied of antenna radiation unit 30, from
And allow the size of dielectric-slab 10 small as possible.Wherein, A points are distributing point, and B points are earth point.
Due to being mimo antenna, the quantity at least two of antenna radiation unit 30, it is of course also possible to be three
Or three or more.In view of the size of dielectric-slab 10, if the quantity of antenna radiation unit 30 is excessive, occupied space is larger,
It is usually the case that antenna radiation unit 30 is two.
If without adding ground strip 50 in antenna, when loading excitation, most of current distribution is on metal edge frame 40, then
When human contact's mobile phone, electric current can largely flow into human body by human hand, therefore the performance of antenna is influenced to compare by human body
Greatly.
In the present embodiment, in order to overcome influence of the human body to antenna performance, in the gap of metal edge frame 40 and earth plate 20
The ground strip 50 identical with 30 quantity of antenna radiation unit is provided with so that the electric current of metal edge frame 40 is introduced earth plate 20.Such as figure
Including two antenna radiation units 30, then corresponding shown in 2, in Fig. 1, grounded metal sheet 21 is two, and ground strip 50 is two
It is a.Ground strip 50 is arranged in the gap of metal edge frame 40 and earth plate 20, it is to be understood that ground strip 50 needs and metal
Frame 40 connects, and needs to connect with earth plate 20, and the electric current on such metal edge frame 40 introduces earth plate 20.In addition, ground connection
Piece 50 is conductive material, such as can be metal.
It should be noted that although earth plate 20 is Chong Die with 10 outer rim of dielectric-slab, if dielectric-slab 10 is rectangle,
Then earth plate 20 is not a complete rectangle, but is hollowed out on the rectangle identical with dielectric-slab 10, and the region hollowed out
The exactly view field of antenna radiation unit 30.As can be seen that earth plate 20 is by dash area and grounded metal in 1 from figure
21 two parts of piece are formed, and the white portion in the upper right corner is area of knockout, and the white portion in the lower left corner is also area of knockout.Ground connection gold
Belong to piece 21 to be arranged in the region hollowed out, but it with the earth plate of dash area 20 is integral structure (Fig. 1 that grounded metal sheet 21, which is,
It is the clearer position for embodying grounded metal sheet that earth plate 20 is divided into dash area and grounded metal sheet 21), ground connection
Plate 20 is typically one layer of copper sheet.Preferably embodiment, earth plate 20 are printed on dielectric-slab 10.It is understood that
Using the set-up mode of printing, be conducive to the stabilization of antenna performance, and be easy to buy, cost is relatively low.
Mimo antenna provided in this embodiment applied to the electronic product with metal edge frame, including dielectric-slab, is set to
The earth plate of dielectric-slab one side, at least two antenna radiation units for being set to dielectric-slab another side, antenna radiation unit include
The gap of feed branch and short circuit branch, and grounded metal patch corresponding on earth plate, metal edge frame and earth plate
The ground strip identical with antenna radiation unit quantity is provided with so that the electric current of metal edge frame is introduced earth plate.It is grounded by setting
The electric current of metal edge frame when loading excitation, can be introduced earth plate, electric current be avoided to pass through human body to cause antenna performance by piece
Decline.In addition, this antenna ensure that the integrality of metal edge frame, the stability of electronic product entirety is enhanced, finally, antenna spoke
It penetrates unit and so that the occupied area of mimo antenna is smaller using coupling feed way.
On the basis of a upper embodiment, antenna radiation unit 30 is respectively arranged at same cornerwise the two of dielectric-slab 10
End.
For mimo antenna, the isolation between antenna radiation unit 30 is also an important index, usual feelings
Under condition, improving the isolation of antenna radiation unit 30 namely reduces coupling between antenna radiation unit 30, in the present embodiment,
The coupling of antenna radiation unit 30 is reduced by increasing distance, so as to fulfill the raising of isolation.If specifically, antenna spoke
It is two to penetrate unit 30, then is respectively arranged at the both ends on the diagonal of dielectric-slab 10, it is to be understood that pair of dielectric-slab 10
Linea angulata is two farthest regions on dielectric-slab 10.It is that two antenna radiation units 30 are separately positioned on dielectric-slab 10 in Fig. 2
The upper right corner and the lower left corner, of course, it is possible to as the case may be, two antenna radiation units 30 are separately positioned on dielectric-slab 10
The lower right corner and the upper left corner, the utility model is not construed as limiting.
On the basis of a upper embodiment, two ground strips 50 are respectively arranged at two long sides and metal edges of earth plate 20
The gap of frame 40, wherein, dielectric-slab 10 is rectangle.
Under normal conditions, the metal edge frame 40 of the electronic product with metal edge frame 40 is rectangular, therefore, adaptable,
Dielectric-slab 10 is also rectangle, since the short side of rectangle is shorter for long side, do not grown when setting ground strip 50
The space on side is big, therefore, in the present embodiment, for more convenient setting, ground strip 50 is arranged on the two long of earth plate 20
Side and the gap of metal edge frame 40.It is understood that the width of ground strip 50 need with metal edge frame 40 and earth plate 20 it
Between gap it is of same size, length can select as the case may be, and the present embodiment is not construed as limiting.As shown in Fig. 2, antenna spoke
Both ends of the unit 30 on the same diagonal of dielectric-slab 10 are penetrated, in order to allow the circulation path phase of electric current on metal edge frame 40
Deng, preferably embodiment, as shown in Figure 1, two ground strips 50 be respectively positioned on it is respective where earth plate 20 long side
Middle part.
Preferably embodiment, as shown in Fig. 2, feed branch 31 specifically include the first L-type metal patch, 90 degree it is curved
Roll over metal patch and rectangular metal patch, the end of the long side of the first L-type metal patch and the first of 90 degree of bending metal patches
End connection, the second end of 90 degree of bending metal patches are connect with one end of rectangular metal patch；
Short circuit branch 32 is the second L-type metal patch, the short side of the second L-type metal patch and the first L-type metal patch
Short side is parallel and is reserved with gap, and the long side of the second L-type metal patch and the long side and rectangular metal of the first L-type metal patch are pasted
The long side of piece is parallel.
It is understood that the opening direction of the first L-type metal patch and the second L-type metal patch with dielectric-slab 10
Axis is parallel, and a long side of rectangular metal patch has intersection, 90 degree of bending metals with a short side of dielectric-slab 10
The outer side edges of patch are also what is overlapped with dielectric-slab 10.It should be noted that the feed branch 31 mentioned in the present embodiment and short
The structure of road branch 32 is one kind in numerous embodiments, and it can only be a kind of this concrete structure not represent.
The primary bands of mobile radio communication include at present：GSM850/900/DCS/PCS/LTE2300/2500(824-
960MHz, 1710-2690MHz).In order to verify the performance of mimo antenna provided by the utility model, the utility model provides
Specific simulation result.Wherein, the dielectric constant of dielectric-slab 10 used in simulation process is 4.4, and loss tangent angle is
0.02.The size of dielectric-slab 10 is 130mm*65mm, thickness 0.8mm, selects FR4 materials, and the height of metal edge frame 40 is
5mm。
Fig. 3 is the simulation comparison schematic diagram of a kind of mimo antenna that the utility model embodiment provides.The program devises
The emulation of two reference antennas and return loss.
1) reference antenna 1 only has the feed branch 31 in dielectric-slab 10, earth plate 20 and antenna radiation unit 30, from emulation
Reference antenna 1 produces resonance point in 2500MHz or so from the point of view of data, but effect and bad.
2) reference antenna 2 increases short circuit branch 32 on the basis of reference antenna 1, by the coupling of feed branch 31,
It produces new resonance point respectively at 850MHz and 2300MHz, and optimizes the impedance operator of resonance point at 2500MHz, change
It has been apt to its resonance effect, resonance point is made to shift toward low frequency.
3) ground strip 50 is finally increased on the basis of reference antenna 2.Using between metal edge frame 40 and earth plate 20
Gap, new resonance point is generated at 900MHz, 1750MHz and 2600MHz, and original resonance point is played certain
Matching optimization acts on.
By antenna radiation unit 30 and the mass action of metal edge frame 40, antenna covers GSM850/900/DCS/
PCS/LTE2300/2500 (824-960MHz, 1710-2690MHz).In conclusion mimo antenna provided by the utility model
The band limits that structure enables antenna to cover is wider, covers the primary bands of current mobile communications network.
In addition, the utility model also provides a kind of emulation testing about isolation.The MIMO provided above-described embodiment
Antenna (two antenna radiation units 30 are arranged on cornerwise both ends of dielectric-slab 10) has carried out actual processing, and to material object into
Row actual test and the corresponding dummy model of the material object carry out emulation testing, pass through two antenna spokes of coaxial pair of two 50 Ω
Unit 30 is penetrated to be fed.Fig. 4 be the actual test of the isolation of a kind of mimo antenna that the utility model embodiment provides and
The comparison diagram of emulation testing.Wherein, the emulation S11 in Fig. 4, emulation S12 are to establish the S that dummy model obtains by simulation software
Parameter.And the S parameter tested S11, test S12 and tested obtained by S22 is to process material object in use for laboratory correlate meter
Test gained.Specifically, S11 and S22 are two reflectance factors, reflect the bandwidth of operation of antenna radiation unit 30, S12 is antenna
The absolute value of the coefficient of coup of radiating element 30, for reacting the stiffness of coupling between isolation reflection antenna element.It is used
Simulation software for HFSS15.0, laboratory test instrument is vector network analyzer Agilent N5247A.
From the S parameter in Fig. 4-6dB the bandwidth of antenna is can be seen that as 800-963MHz, 1688-2710MHz, and bandwidth
Inside meet the requirement of isolation -15dB.
At present, widely used SAR (specific absorption rate value) value standard is Unite States Standard, that is, meets SAR
Value is not higher than 1.6W/Kg.In order to illustrate influence of the human body to antenna, the emulation of SAR value is added in the designing scheme, is specifically shown in
Fig. 5.Fig. 5 is human body and mobile phone location relation schematic diagram.Wherein the number of people and antenna model (are with two antenna radiation units 30
Example, is represented respectively with antenna 1 and antenna 2) the distance between for 1mm, antenna 1 is located at number of people side, and antenna 2 is far from the number of people one
Side.Input power to antenna low frequency frequency point and high frequency frequency point is respectively 24dBm and 21dBm, and the SAR value for emulating gained is shown in Table 1.
Table 1
As can be known from Fig. 5, antenna 1 is relatively nearer than antenna 2 apart from the number of people, and therefore, in table 1, the SAR value of antenna 1 is relatively higher,
But it is satisfied by requiring.
In the above-described embodiments, the corresponding embodiment of mimo antenna is described in detail, the utility model is implemented
Example also provides a kind of electronic product with metal edge frame.The electronic product includes electronic product ontology, further includes above-mentioned implementation
Mimo antenna described in example.
It is understood that the electronic product with metal edge frame can be mobile phone, tablet computer etc., as long as with metal
Frame and the electronic product for needing to use antenna.
Electronic product provided in this embodiment with metal edge frame, including mimo antenna, which includes dielectric-slab, sets
It is placed in the earth plate of dielectric-slab one side, at least two antenna radiation units for being set to dielectric-slab another side, antenna radiation unit
Including feed branch and short circuit branch, and grounded metal patch corresponding on earth plate, metal edge frame and earth plate
Gap is provided with the ground strip identical with antenna radiation unit quantity so that the electric current of metal edge frame is introduced earth plate.Pass through setting
The electric current of metal edge frame when loading excitation, can be introduced earth plate, electric current be avoided to pass through human body to cause antenna by ground strip
Hydraulic performance decline.In addition, antenna radiation unit so that the occupied area of mimo antenna is smaller using coupling feed way.
Detailed Jie has been carried out to mimo antenna provided by the utility model and the electronic product with metal edge frame above
It continues.Each embodiment is described by the way of progressive in specification, the highlights of each of the examples are with other embodiment
Difference, just to refer each other for identical similar portion between each embodiment.For device disclosed in embodiment, by
It is corresponded to the methods disclosed in the examples in it, so description is fairly simple, reference may be made to the description of the method.
It should be pointed out that for those skilled in the art, under the premise of the utility model principle is not departed from, may be used also
With to the utility model, some improvement and modification can also be carried out, these improvement and modification also fall into the protection of the utility model claims
In the range of.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only include that
A little elements, but also including other elements that are not explicitly listed or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except also there are other identical elements in the process, method, article or apparatus that includes the element.
Claims (9)
1. a kind of mimo antenna, applied to the electronic product with metal edge frame, which is characterized in that including dielectric-slab, be set to
The earth plate of the dielectric-slab one side, at least two antenna radiation units for being set to the dielectric-slab another side, the antenna
Radiating element includes the feed branch and short circuit branch using coupling feed way, and ground connection gold corresponding on the earth plate
Belong to patch, the metal edge frame and the gap of the earth plate are provided with and the antenna radiation unit quantity is identical connects
Ground piece by the electric current of the metal edge frame to introduce the earth plate.
2. mimo antenna according to claim 1, which is characterized in that the antenna radiation unit is specially two, described
Grounded metal patch is two, and the ground strip is two.
3. mimo antenna according to claim 2, which is characterized in that the antenna radiation unit, which is respectively arranged at, to be given an account of
Same cornerwise both ends of scutum.
4. mimo antenna according to claim 2, which is characterized in that two ground strips are respectively arranged at the ground connection
Two long sides of plate and the gap of the metal edge frame, wherein, the dielectric-slab is rectangle.
5. mimo antenna according to claim 4, which is characterized in that two ground strips are respectively positioned on the institute at respective place
State the middle part of the long side of earth plate.
6. mimo antenna according to claim 4, which is characterized in that the feed branch specifically includes the first L-type metal
Patch, 90 degree of bending metal patches and rectangular metal patch, the end of the long side of the first L-type metal patch with described 90 degree
Bend the first end connection of metal patch, the second end of 90 degree of bendings metal patch and one end of the rectangular metal patch
Connection；
The short circuit branch is the second L-type metal patch, the short side of the second L-type metal patch and the first L-type metal
The short side of patch is parallel and is reserved with gap, the long side of the second L-type metal patch and the length of the first L-type metal patch
Side is parallel with the long side of the rectangular metal patch.
7. according to the mimo antenna described in claim 1-6 any one, which is characterized in that the earth plate, which is printed in, to be given an account of
On scutum.
8. according to the mimo antenna described in claim 1-6 any one, which is characterized in that the dielectric constant of the dielectric-slab is
4.4, loss tangent angle is 0.02.
9. a kind of electronic product with metal edge frame, including electronic product ontology, which is characterized in that further include claim 1-
Mimo antenna described in 8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721869721.1U CN207587972U (en) | 2017-12-27 | 2017-12-27 | A kind of mimo antenna and the electronic product with metal edge frame |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721869721.1U CN207587972U (en) | 2017-12-27 | 2017-12-27 | A kind of mimo antenna and the electronic product with metal edge frame |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112540A (en) * | 2019-04-08 | 2019-08-09 | 深圳市信维通信股份有限公司 | 5G double frequency mimo antenna and mobile terminal device |
| CN115173033A (en) * | 2022-06-30 | 2022-10-11 | 同济大学 | Mobile phone antenna with metal frame |
-
2017
- 2017-12-27 CN CN201721869721.1U patent/CN207587972U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112540A (en) * | 2019-04-08 | 2019-08-09 | 深圳市信维通信股份有限公司 | 5G double frequency mimo antenna and mobile terminal device |
| CN110112540B (en) * | 2019-04-08 | 2024-01-16 | 深圳市信维通信股份有限公司 | 5G dual-frequency MIMO antenna and mobile terminal equipment |
| CN115173033A (en) * | 2022-06-30 | 2022-10-11 | 同济大学 | Mobile phone antenna with metal frame |
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