CN109149082A - A kind of compact mimo antenna and the communication apparatus comprising it - Google Patents
A kind of compact mimo antenna and the communication apparatus comprising it Download PDFInfo
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- CN109149082A CN109149082A CN201810787577.XA CN201810787577A CN109149082A CN 109149082 A CN109149082 A CN 109149082A CN 201810787577 A CN201810787577 A CN 201810787577A CN 109149082 A CN109149082 A CN 109149082A
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- 238000004891 communication Methods 0.000 title claims abstract description 21
- 230000005855 radiation Effects 0.000 claims abstract description 228
- 238000005452 bending Methods 0.000 claims abstract description 49
- 238000006386 neutralization reaction Methods 0.000 claims description 33
- 238000002955 isolation Methods 0.000 abstract description 23
- 230000003472 neutralizing effect Effects 0.000 abstract description 15
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 230000008054 signal transmission Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 241001024304 Mino Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2291—Supports; Mounting means by structural association with other equipment or articles used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/273—Adaptation for carrying or wearing by persons or animals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present invention provides a kind of compact mimo antenna and comprising its communication apparatus, compact mimo antenna includes: to neutralize line and two antenna elements, i.e. first antenna unit and the second antenna element；First antenna unit and the second antenna element neutralize line and include at least a L-type bending part by neutralizing line connection；Antenna element includes trapezoidal radiation ontology, the grounding point connecting with GND, and the feeding point for transmitting signal；The long bottom edge of trapezoidal radiation ontology is arranged far from GND；The long bevel edge of trapezoidal radiation ontology is arranged close to line is neutralized；The first end on the long bottom edge of trapezoidal radiation ontology is connect with line is neutralized, and the second end extension on the long bottom edge of trapezoidal radiation ontology has radiation tail end, and the endpoint of radiation tail end is equipped with gap close to GND and with GND.Present invention accomplishes the small size of mimo antenna, high-isolation, structure simplification, high RST transmission performance, the good demand of interference free performance.
Description
Technical field
The present invention relates to mimo antenna technical field, espespecially a kind of compact mimo antenna and the communication apparatus comprising it.
Background technique
With the growth of wireless communication demand, MIMO (Multiple-inputMultiple-output)) technology
It comes into being, and gets the attention.MIMO technology realizes multiple-input multiple-output using mutiple antennas, greatly improves communication apparatus
Channel capacity and the availability of frequency spectrum, and do not increase antenna transmission power and bandwidth also.
The key point of mimo antenna is isolation and antenna size between antenna.Between each antenna of mimo antenna
Need to keep certain isolation to can be only achieved preferable performance, and improving isolation and generally requiring between antenna has biggish
Away from, therefore will lead to that antenna size is larger and structure is complicated.For example, for the MIMO for working in the common 2.4G frequency range of WIFI
Antenna, each unit antenna distance of mimo antenna, which generally requires, reaches 80mm or more.Therefore, it is smaller how to design size,
The simple mimo antenna of structure is the maximum difficult point that those skilled in the art face.
Summary of the invention
The object of the present invention is to provide a kind of compact mimo antenna and comprising its communication apparatus, mimo antenna is realized
Small size, high-isolation, structure simplification, high RST transmission performance, the good target of interference free performance.
Technical solution provided by the invention is as follows:
The present invention provides a kind of compact mimo antennas, comprising:
Neutralize line and two antenna elements, i.e. first antenna unit and the second antenna element；
The first antenna unit is connected with second antenna element by the neutralization line, and the neutralization line is at least
Including a L-type bending part；
The antenna element includes trapezoidal radiation ontology, the grounding point connecting with GND, and the feed for transmitting signal
Point；
The long bottom edge of the trapezoidal radiation ontology is arranged far from the GND；The long bevel edge of the trapezoidal radiation ontology is close
The neutralization line setting；The first end on the long bottom edge of the trapezoidal radiation ontology is connect with the neutralization line, the trapezoidal radiation
The second end extension on the long bottom edge of ontology has radiation tail end, and the endpoint of the radiation tail end is set close to the GND and with the GND
There is gap；The first end on the long bottom edge of the trapezoidal radiation ontology has the first radiation arm towards GND extension along first direction,
The end of first radiation arm forms the grounding point, and the short bottom edge of the trapezoidal radiation ontology has towards GND extension
The end of second radiation arm, second radiation arm forms the feeding point.
In the technical program, two antenna elements creatively are connected by being equipped with the neutralization line of L-type bending part, thus
It realizes the short distance setting of two antenna elements but there is high-isolation, in the size for greatly reducing this mimo antenna, simultaneously
So that closely the antenna element of setting ensure that the multiple more of this mimo antenna because having high-isolation without interfering with each other
The high efficiency of transmission performance of receipts.More preferably, the structure of this mimo antenna is simple, and each radiating element is simple geometric figure, easily
In processing and realize.More preferably, the close GND setting of radiation tail end, forms close coupling with GND, even if so that this mimo antenna
Size is small to be also easy to realize resonance, has good reception volatility.More preferably, grounding point is inner with the outer setting of feeding point, has
Effect avoids influence of this mimo antenna structure to its own signal transmission performance.In summary, this mimo antenna has size
Small, the advantages that isolation is high, structure is simple, signal transmission capabilities are excellent, interference free performance is good, have good practicability,
Practicability and market prospects.
Further, the endpoint of the radiation tail end is 0.5mm~3mm at a distance from the GND；And/or the ground connection
Point is 1.5mm~5mm at a distance from the feeding point；And/or it is described neutralize line size in a second direction be λ/27~λ/
23；Wherein, first direction is vertical with second direction, and λ is the operation wavelength of the compact mimo antenna, and λ=(c/f), c are
The light velocity, f are the working frequency of the compact mimo antenna；And/or the radiation tail end and the second antenna list of first antenna unit
The extended length of the radiation tail end of member is different；And/or the ladder of trapezoidal the radiation ontology and the second antenna element of first antenna unit
The swept area that shape radiates ontology is different.
In the technical program, the size of all parts by further determining that this mimo antenna, to improve its work
Transmission performance has specific aim, ensures that this mimo antenna in the efficient performance of a certain determining frequency.More preferably, originally
Two antenna elements of mimo antenna can be bilateral symmetry, can not also be bilateral symmetry, only the spoke of its radiator
Penetrate that area is different, but basic planform is similar can be, it can be achieved that the product diversification and personalization of this mimo antenna be set
It sets.
Further, the second end on the long bottom edge of the trapezoidal radiation ontology has third along the opposite direction extension of first direction
There is the 4th radiation at radiation arm, the extension end of the third radiation arm in a second direction and far from the trapezoidal radiation ontology extension
There is the 5th radiation arm at the extension end of arm, the 4th radiation arm along first direction extension；Wherein, first direction and second direction are hung down
Directly.
In the technical program, extend the length of this mimo antenna by radiation arm, thus.Prolonged by the fold-back of radiation tail end
Exhibition to improve the length of the swept area of unit area by improving space utilization rate, and then meets this mimo antenna
Reduce its occupied area while cascade unit, guarantees its high efficiency of transmission performance, and reduce the size of mimo antenna.
Further, the 4th spoke of the end of the 4th radiation arm of the first antenna unit and second antenna element
The distance for penetrating the end of arm is λ/6~λ/4；Wherein, λ is the operation wavelength of the compact mimo antenna, and λ=(c/f), c
For the light velocity, f is the working frequency of the compact mimo antenna.
In the technical program, the radiation size of mimo antenna is designed by the working frequency (or frequency range) of mimo antenna,
The specific aim that its own working frequency is received in the sending and receiving of this mimo antenna is substantially increased, improves this mimo antenna to its own work
The resolution of frequency (or frequency range), and then ensure that it corresponds to the high efficiency of transmission performance of working frequency (or frequency range).
Further, the extended length of the 5th radiation arm is λ/10~2 λ/15；Wherein, λ is the compact MIMO
The operation wavelength of antenna, and λ=(c/f), c are the light velocity, f is the working frequency of the compact mimo antenna；And/or it is described
The extension end of 5th radiation arm is in a second direction or the extension of the opposite direction of second direction has the 6th radiation arm.
Further, the second end on the long bottom edge of the trapezoidal radiation ontology is in a second direction and far from the trapezoidal radiation
Ontology extension has the 7th radiation arm, and there is the 8th radiation arm at the extension end of the 7th radiation arm along first direction extension；Wherein,
One direction is vertical with second direction.
In the technical program, extend the length of this mimo antenna by radiation arm, thus.Prolonged by the fold-back of radiation tail end
Exhibition to improve the length of the swept area of unit area by improving space utilization rate, and then meets this mimo antenna
Reduce its occupied area while cascade unit, guarantees its high efficiency of transmission performance, and reduce the size of mimo antenna.
It further, further include dielectric layer, the GND is layed in the dielectric layer；The antenna element and the medium
The perpendicular or parallel setting of layer.
In the technical program, antenna element and GND are carried by dielectric layer, thus realize the integrated of mimo antenna and
Modularization is hardly damaged it to ensure that the quality of mimo antenna convenient for the assembling and transport of mimo antenna.
Further, the neutralization line is U-shaped structure, is open far from the GND；First opening of the U-shaped structure
End has the first son to neutralize line towards first antenna unit extension, is formed so that the first son neutralizes line with first open end
First L-type bending part；Second open end of the U-shaped structure has the second son to neutralize line towards second antenna element extension,
So that the second son neutralizes line and second open end forms the second L-type bending part.
In the technical program, neutralizing line can be by four L-type bending parts of setting (the first L-type bending part, the bending of the second L-type
Two L-type bending parts of portion and U-shaped structure itself), so that the couple current of two antenna elements of removal, improves two
The isolation of antenna element, and then the signal interference between two antenna elements is effectively reduced, to improve mimo antenna
Signal transmission performance.
Further, it is 3 λ/50~6 λ/50 that first son, which neutralizes line and the maximum distance of the GND,；Wherein, λ is institute
The operation wavelength of compact mimo antenna is stated, and λ=(c/f), c are the light velocity, f is the work frequency of the compact mimo antenna
Rate；And/or the groove depth of the U-shaped structure is having a size of λ/22~λ/18；Wherein, λ is the operating wave of the compact mimo antenna
It is long, and λ=(c/f), c are the light velocity, f is the working frequency of the compact mimo antenna.
In the technical program, the size for neutralizing line is determined by the working frequency (or frequency range) of mimo antenna, in raising
With the effect of line decoupling, the specific aim that its own working frequency is received in the sending and receiving of this mimo antenna is substantially increased, this MIMO is improved
Antenna ensure that it corresponds to the efficient biography of working frequency (or frequency range) to the resolution of its own working frequency (or frequency range)
Defeated performance.
The present invention also provides a kind of communication apparatus equipped with compact mimo antenna, comprising:
Compact mimo antenna and PCB；
In the compact mimo antenna and line and two antenna elements, i.e. first antenna unit and the second antenna list
Member；The first antenna unit is connected with second antenna element by the neutralization line, and the neutralization line includes at least
One L-type bending part；The antenna element includes trapezoidal radiation ontology, the grounding point for connecting with GND, and for transmitting
The feeding point of signal；
The long bottom edge of the trapezoidal radiation ontology is arranged far from the GND；The long bevel edge of the trapezoidal radiation ontology is close
The neutralization line setting；The first end on the long bottom edge of the trapezoidal radiation ontology is connect with the neutralization line, the trapezoidal radiation
The second end extension on the long bottom edge of ontology has radiation tail end, and the endpoint of the radiation tail end is set close to the GND and with the GND
There is gap；The first end on the long bottom edge of the trapezoidal radiation ontology has the first radiation arm towards GND extension along first direction,
The end of first radiation arm forms the grounding point, and the short bottom edge of the trapezoidal radiation ontology has towards GND extension
The end of second radiation arm, second radiation arm forms the feeding point；
The GND is set to the PCB；
The feeding point is connect with the microstrip line of the PCB or coaxial line.
In the technical program, by the way that mimo antenna to be integrated to the PCB of communication apparatus, to improve the sky of communication apparatus
Between utilization rate and Highgrade integration, and the occupied area of mimo antenna is small, signal transmission performance is high, in practical applications, can be same
Step is prepared while realizing PCB with mimo antenna, to improve the efficiency of communication apparatus assembling, shortens the production of communication apparatus
Process saves manufacturing cost.
A kind of compact mimo antenna provided through the invention and the communication apparatus comprising it, can bring it is following at least
It is a kind of the utility model has the advantages that
1, in the present invention, two antenna elements creatively are connected by being equipped with the neutralization line of L-type bending part, thus real
The short distance of existing two antenna elements is arranged but there is high-isolation to make simultaneously in the size for greatly reducing this mimo antenna
The antenna element of closely setting is obtained because having high-isolation without interfering with each other, ensure that the multiple-input multiple-output of this mimo antenna
High efficiency of transmission performance.More preferably, the structure of this mimo antenna is simple, and each radiating element is simple geometric figure, is easy to
Processing and realization.More preferably, the close GND setting of radiation tail end, forms close coupling with GND, even if so that this mimo antenna ruler
It is very little it is small be also easy to realize resonance, have and good receive volatility.More preferably, grounding point is inner with the outer setting of feeding point, effectively
Avoid influence of this mimo antenna structure to its own signal transmission performance.In summary, this mimo antenna have size it is small,
The advantages that isolation is high, structure is simple, signal transmission capabilities are excellent, interference free performance is good has good practicability, practical
Property and market prospects.
2, in the present invention, extend the length of radiation tail end by turning back, to guarantee that mimo antenna meets length requirement
Meanwhile occupied area is small.
3, in the present invention, the design of each size of MINO antenna is realized by mimo antenna working frequency (or frequency range),
To improve the specific aim that its own working frequency is received in the sending and receiving of this mimo antenna, this mimo antenna is improved to its own work frequency
The resolution of rate (or frequency range), and then ensure that it corresponds to the high efficiency of transmission performance of working frequency (or frequency range).
4, in the present invention, though this mimo antenna size is small, since first antenna unit and the second antenna element can be phase
Like structure；It can also be dissimilar structure (radiation tail end of the radiation tail end of figure first antenna unit less than the second antenna element
Length, width, thickness etc.)；The structure that multiple-input multiple-output can be achieved is more, and product category is various, can meet different customer demands.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to a kind of compact mimo antenna
And above-mentioned characteristic, technical characteristic, advantage and its implementation comprising its communication apparatus are further described.
Fig. 1 is the first example structure schematic diagram of compact mimo antenna of the invention；
Fig. 2 is second of example structure schematic diagram of compact mimo antenna of the invention；
Fig. 3 is the third example structure schematic diagram of compact mimo antenna of the invention；
Fig. 4 is the 4th kind of example structure schematic diagram of compact mimo antenna of the invention；
Fig. 5 is a kind of example structure schematic diagram of communication apparatus of the invention；
Fig. 6 is the return loss analogous diagram for the USB network card that compact mimo antenna of the invention is applied to 2.4G frequency range；
Fig. 7 be compact mimo antenna of the invention and be not provided with this neutralization line mimo antenna in 2.4~2.5GHz
Interior isolation contrast simulation figure.
Drawing reference numeral explanation:
1. first antenna unit, 11. trapezoidal radiation ontologies, 111. long bottom edges, 112. short bottom edges, 12. radiation tail ends, 121.
Third radiation arm, 122. the 4th radiation arms, 123. the 5th radiation arms, 124. the 6th radiation arms, 125. the 7th radiation arms, 126.
Eight radiation arms, 127. the 9th radiation arms, 13. first radiation arms, 131. grounding points, 14. second radiation arms, 141. feeding points, 2.
Second antenna element, in 3. and line, 31. first sons neutralize lines, and 32. second sons neutralize lines, 33.U type structure, in 331. thirds
And line, 332. the 4th sons neutralize line, 333. the 5th sons neutralize line, 4.GND, 5. dielectric layers, 6. plastic shells, 7.USB interface.
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, Detailed description of the invention will be compareed below
A specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically shown in each figure, they are not represented
Its practical structures as product.In addition, there is identical structure or function in some figures so that simplified form is easy to understand
Component only symbolically depicts one of those, or has only marked one of those.Herein, "one" is not only indicated
" only this ", can also indicate the situation of " more than one ".Herein, it should be noted that unless otherwise specific rule
Fixed and restriction, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, being also possible to can
Dismantling connection, or be integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also pass through
Intermediary is indirectly connected, and can be the connection inside two elements.For the ordinary skill in the art, can have
Body situation understands the concrete meaning of above-mentioned term in the present invention.
In example 1, as shown in Figure 1-3, a kind of compact mimo antenna, comprising: neutralize line 3 and two antennas
Unit, i.e. first antenna unit 1 and the second antenna element 2；First antenna unit 1 and the second antenna element 2 are connected by neutralizing line 3
It connects, and neutralizes line 3 and include at least a L-type bending part；Antenna element includes trapezoidal radiation ontology 11, the ground connection connecting with GND4
Point 131, and the feeding point 141 for transmitting signal；The long bottom edge 111 of trapezoidal radiation ontology 11 is arranged far from GND4；It is trapezoidal
The long bevel edge for radiating ontology 11 is arranged close to line 3 is neutralized；The first end and neutralization line 3 on the long bottom edge 111 of trapezoidal radiation ontology 11
The second end extension of connection, the long bottom edge 111 of trapezoidal radiation ontology 11 has radiation tail end 12, and the endpoint of radiation tail end 12 is close
GND4 is simultaneously equipped with gap with GND4；The first end on the long bottom edge 111 of trapezoidal radiation ontology 11 extends along first direction towards GND4
There is the first radiation arm 13, the end of the first radiation arm 13 forms grounding point 131,112 direction of short bottom edge of trapezoidal radiation ontology 11
GND4 extension has the second radiation arm 14, and the end of the second radiation arm 14 forms feeding point 141.In practical applications, GND4 can be
The ground line or ground plane of this mimo antenna itself can also be to be used cooperatively with this mimo antenna with ground line or ground plane
Component GND4.
In example 2, as shown in Figure 1-3, on the basis of example 1, the long bottom edge 111 of trapezoidal radiation ontology 11
Second end along first direction opposite direction extension have third radiation arm 121, the extension end of third radiation arm 121 is in a second direction
And having the 4th radiation arm 122 far from the extension of trapezoidal radiation ontology 11, the extension end of the 4th radiation arm 122 has along first direction extension
5th radiation arm 123；Wherein, first direction is vertical with second direction；So that third radiation arm 121, the 4th radiation arm 122 and
The radiation tail end 12 of this mimo antenna of five radiation arms 123 composition.Preferably, the extension end of the 5th radiation arm 123 is in a second direction
Or the opposite direction extension of second direction has the 6th radiation arm 124；So that third radiation arm 121, the 4th radiation arm 122, the 5th spoke
It penetrates arm 123 and the 6th radiation arm 124 constitutes the radiation tail end 12 of this mimo antenna.
In the third embodiment, as shown in figure 4, on the basis of example 1, the long bottom edge 111 of trapezoidal radiation ontology 11
Second end has the 7th radiation arm 125, the extension end of the 7th radiation arm 125 in a second direction and far from the extension of trapezoidal radiation ontology 11
There is the 8th radiation arm 126 along first direction extension；Wherein, first direction is vertical with second direction, so that 125 He of the 7th radiation arm
The radiation tail end 12 of this mimo antenna of the 8th radiation arm 126 composition.Preferably, the extension end of the 8th radiation arm 126 is along second party
To or second direction opposite direction extension have the 9th radiation arm 127；So that the 7th radiation arm 125, the 8th radiation arm 126 and the 9th
The radiation tail end 12 of this mimo antenna of the composition of radiation arm 127.
The size table of 1 mimo antenna of table
| Size | |
| A | λ/6~λ/4 |
| B | λ/10~2 λ/15 |
| C | 0.5mm~3mm |
| D | λ/22~λ/18 |
| E | λ/27~λ/23 |
| F | 3 λ/50~6 λ/50 |
| G | 1.5mm~5mm |
In example IV, as shown in Figs 1-4, on the basis of embodiment one, two, three, this mimo antenna is along second party
To distance A be λ/6~λ/4, wherein second direction is vertical with first direction.Preferably, radiation tail end 12 is along first direction
Distance B is λ/10~2 λ/15.Preferably, the endpoint of radiation tail end 12 is 0.5mm~3mm along first direction and GND4 distance C.
Preferably, neutralizing line 3 along the distance D that first direction extends is λ/22~λ/18.Preferably, line 3 is neutralized to extend in a second direction
Distance E be λ/27~λ/23.Preferably, the maximum distance for neutralizing 3 distance GND4 of line is 3 λ/50~6 λ/50.Preferably, it connects
Place 131 and 141 distance G of feeding point is 1.5mm~5mm.Wherein, λ is the operation wavelength of compact mimo antenna, and λ=
(c/f), c is the light velocity, and f is the working frequency of compact mimo antenna.Specifically, referring to fig. 2 with table 1.
In embodiment five, as shown in Figs 1-4, on the basis of embodiment one, two, three or four, neutralization line 3 is U-shaped knot
Structure 33 is open and is arranged far from GND4；First open end of U-shaped structure 33 has in the first son towards the extension of first antenna unit 1
With line 31 so that first son neutralize line 31 and the first open end formation the first L-type bending part；Second open end court of U-shaped structure
There is the second son to neutralize line 32 to the extension of the second antenna element 2, so that the second son neutralizes line 32 and the second open end forms the second L-type
Bending part.Preferably, U-shaped structure includes neutralizing third that line 31 is connect with the first son to neutralize line 331, neutralizes line with the second son
The 5th of connection 32 is sub to neutralize line 333, and is separately connected the 4th son that third neutralizes what the 5th son neutralization line 333 of line 331
Neutralize line 332, wherein third neutralizes line 331 and the 4th son neutralizes line 332 and forms a L-type bending part, and the 4th son neutralizes line
332 and the 5th son neutralize line 333 formed a L-type bending part.
In the present embodiment, neutralize line can by four L-type bending parts of setting (the first L-type bending part, the second L-type bending part,
And two L-type bending parts of U-shaped structure itself), so that the couple current of two antenna elements of removal, improves two antennas
The isolation of unit, and then the signal interference between two antenna elements is effectively reduced, to improve the letter of mimo antenna
Number transmission performance.It is worth noting that in practical applications, neutralizing line can also be the L-type structure of only one L-type bending part,
It can be the Z-shaped structure or Π type structure or U-shaped structure of L-type bending part there are two tools；Can for it is multiple (three or three with
On) structure that is successively spliced to form of L-type bending part.Preferably, L-type bending part is preferably right angle L-type bending part；When neutralization line packet
When having included multiple L-type bending parts, it is preferable that multiple L-type bending part is right angle L-type bending part.Preferably, neutralizing line is to close
It is symmetrical set between first antenna unit 1 and the second antenna element 2 in along the line of symmetry that first direction extends.
In embodiment six, as shown in Figs 1-4, on the basis of embodiment one, two, three, four or five, first antenna unit
The shape of the trapezoidal radiation ontology 11 of 1 trapezoidal radiation ontology 11 and the second antenna element 2 is same or similar.Preferably, first
Same or similar (or the first antenna list of the shape of the radiation tail end 12 of the radiation tail end 12 of antenna element 1 and the second antenna element 2
The radiation tail end 12 of member 1 and the total length difference of the radiation tail end 12 of the second antenna element 2 or the radiation of first antenna unit 1
End 12 is different with the shape of the radiation tail end 12 of the second antenna element 2).Preferably, the grounding point 131 of first antenna unit 1
It is equal or different with the grounding point 131 of 141 distance G of feeding point and the second antenna element 2 and 141 distance G of feeding point.To sum up
It is found that first antenna unit 1 and the second antenna element 2 can be symmetrically arranged along the line of symmetry that first direction extends so that
This mimo antenna is symmetrical antenna.Certainly, first antenna unit 1 and the second antenna element 2 can also be similar antenna unit or class
Like antenna element, so that this mimo antenna is asymmetrical antenna.It preferably, further include dielectric layer 5, GND4 is layed in dielectric layer 5；
Antenna element and the perpendicular or parallel setting of dielectric layer 5；In the present embodiment, this mimo antenna itself has supporting body (i.e. dielectric layer
5), it is preferable that first antenna unit 1, neutralization line and the second antenna element 2 are laid in dielectric layer 5, so that this mimo antenna
The communication apparatus that second direction size is small suitable for big along first direction size.As this mimo antenna is spread by way of printing
If being set to dielectric layer 5.Exemplary, dielectric layer 5 is FR4 (epoxy glass cloth laminated board), and GND4 is the side for being layed in FR4
Surface, and first antenna unit 1, the second antenna element 2 and neutralization line are laid in the side surface that FR4 is equipped with GND4, so that the
The grounding point 131 of one antenna element 1 is connect with the GND4 of FR4, the feeding point 141 and the microstrip line on FR4 of first antenna unit 1
Or coaxial line connection, as signal access point；The grounding point 131 of second antenna element 2 is connect with the GND4 of FR4, the second antenna
The feeding point 141 of unit 2 is connect with the microstrip line on FR4 or coaxial line, as signal access point.Certainly, in practical applications,
Dielectric layer 5 can be PCB or other materials, and the length and width of dielectric layer 5 and Gao Ke are configured according to actual needs.Certainly, first
Antenna element 1, neutralization line and the second antenna element 2 can also be vertical at dielectric layer 5, so that this mimo antenna is suitable for along first
Direction size is small and the big communication apparatus of size in a second direction, is such as set to dielectric layer 5 by plug-in.It is worth explanation
It is, when communication apparatus itself has carrying first antenna unit 1, the second antenna element 2 and neutralizes the carrier and GND4 of line,
Then at this point, this mimo antenna only comprising first antenna unit 1, the second antenna element 2 and need to neutralize line.
Illustratively, as shown in Figure 1, Figure 2 and shown in Fig. 5, the USB net of 2.4G frequency range is applied to for mimo antenna of the invention
Card.Wherein, USB network card includes PCB, this mimo antenna, USB interface 7 and covers at PCB and the plastic shell of this mimo antenna
6, USB interface 7 is connect with PCB, and the position of the corresponding USB interface 7 of plastic shell 6 is provided with through slot；This mimo antenna is set to and USB
The other end that interface 7 is oppositely arranged；This mimo antenna include first antenna unit 1, the second antenna element 2 and neutralize line,
In, first antenna unit 1 and the second antenna element 2 are symmetrical arranged；The grounding point 131 of first antenna unit 1 and the GND4 of PCB connect
It connects, the feeding point 141 of first antenna unit 1 is connect with the microstrip line on PCB or coaxial line, as signal access point；Second day
The grounding point 131 of line unit 2 is connect with the GND4 of PCB, the feeding point 141 of the second antenna element 2 and the microstrip line on PCB or same
Axis connection, as signal access point；Preferably, specifically, the structure snd size of this mimo antenna are referring to Fig. 1, Fig. 2 and table
1 setting.By emulation, the return loss simulation result (as shown in Fig. 5 and table 2) of USB network card is obtained, it can referring to Fig. 6 and table 2
Know, the first antenna unit 1 of this mimo antenna and the resonant operational frequency range of second unit cover WIFI common 2.412~
2.485GHz frequency range (S11 < -10dB, S22 < -10dB).The distance of existing two antenna elements is changed to 5mm by 80mm, and
The size of two antenna elements in a second direction only has 25mm, is meeting good transmission performance simultaneously, is also greatly reducing
The size of mimo antenna.
Table 2MIMO antenna applications are in the return loss simulation result of the USB network card of 2.4G frequency range
| Name (title) | X(GHz) | Y |
| m1 | 2.4120 | -11.0380 |
| m2 | 2.4850 | -12.5240 |
In addition, in order to further illustrate also provide a comparison of this mimo antenna whether there is or not neutralize line isolation, can referring to Fig. 7 and table 3
Know, in mimo antenna does not increase and when line, in 2.4~2.5GHz, the isolation of mimo antenna can only achieve 7~11dB；
And after having added neutralization line, the isolation of mimo antenna reaches 18dB or more, meets requirement (the i.e. S12 <-that isolation is greater than 15dB
15dB).As it can be seen that the design that bending neutralizes line has obviously effect to the promotion of size reduction and isolation.Therefore, this hair
It is bright by designing to there is the neutralization line of L-type bending part to shorten the size of mimo antenna and to improve its isolation, to meet
Small, high-effect, high-isolation the demand of mimo antenna size, meets the trend of MIMO electronic product microminiaturization increasingly, has good
Good practicability, applicability and the market competitiveness, meets customer need.
Whether there is or not isolation contrast tables when neutralization line for table 3MIMO antenna
In embodiment seven, as shown in Figs. 1-5, a kind of communication apparatus equipped with compact mimo antenna, comprising: compact
Mimo antenna and PCB；Compact mimo antenna includes: to neutralize line and two antenna elements, i.e. first antenna unit 1 and second
Antenna element 2；First antenna unit 1 is connected with the second antenna element 2 by neutralizing line, and is neutralized line and included at least a L-type
Bending part；Antenna element includes trapezoidal radiation ontology 11, the grounding point 131 connecting with GND4, and the feedback for transmitting signal
Electricity point 141；The long bottom edge 111 of trapezoidal radiation ontology 11 is arranged far from GND4；The long bevel edge of trapezoidal radiation ontology 11 is close to neutralization
Line setting；The first end on the long bottom edge 111 of trapezoidal radiation ontology 11 is connect with line is neutralized, the long bottom edge of trapezoidal radiation ontology 11
111 second end extension has radiation tail end 12, and the endpoint of radiation tail end 12 is equipped with gap close to GND4 and with GND4；Trapezoidal radiation
The first end on the long bottom edge 111 of ontology 11 has the first radiation arm 13 towards GND4 extension along first direction, the first radiation arm 13
End forms grounding point 131, and there are the second radiation arm 14, the second spoke in the short bottom edge 112 of trapezoidal radiation ontology 11 towards GND4 extension
The end for penetrating arm 14 forms feeding point 141；GND4 is set to the PCB；Feeding point 141 is connect with the microstrip line of PCB or coaxial line.
In embodiment eight, as shown in Figs. 1-5, on the basis of embodiment seven, the long bottom edge 111 of trapezoidal radiation ontology 11
Second end along first direction opposite direction extension have third radiation arm 121, the extension end of third radiation arm 121 is in a second direction
And having the 4th radiation arm 122 far from the extension of trapezoidal radiation ontology 11, the extension end of the 4th radiation arm 122 has along first direction extension
5th radiation arm 123；Wherein, first direction is vertical with second direction；So that third radiation arm 121, the 4th radiation arm 122 and
The radiation tail end 12 of this mimo antenna of five radiation arms 123 composition.Preferably, the extension end of the 5th radiation arm 123 is in a second direction
Or the opposite direction extension of second direction has the 6th radiation arm 124；So that third radiation arm 121, the 4th radiation arm 122, the 5th spoke
It penetrates arm 123 and the 6th radiation arm 124 constitutes the radiation tail end 12 of this mimo antenna.
In embodiment nine, as shown in Figs. 1-5, on the basis of embodiment seven, the long bottom edge 111 of trapezoidal radiation ontology 11
Second end in a second direction and far from trapezoidal radiation ontology 11 extend have the 7th radiation arm 125, the extension of the 7th radiation arm 125
There is the 8th radiation arm 126 at end along first direction extension；Wherein, first direction is vertical with second direction, so that the 7th radiation arm 125
The radiation tail end 12 of this mimo antenna is constituted with the 8th radiation arm 126.Preferably, the extension end of the 8th radiation arm 126 is along second
The extension of the opposite direction of direction or second direction has the 9th radiation arm 127；So that the 7th radiation arm 125, the 8th radiation arm 126 and
The radiation tail end 12 of this mimo antenna of nine radiation arms 127 composition.
In embodiment ten, as shown in Figs. 1-5, on the basis of embodiment seven, eight or nine, this mimo antenna is along second party
To distance A be λ/6~λ/4, wherein second direction is vertical with first direction.Preferably, radiation tail end 12 is along first direction
Distance B is λ/10~2 λ/15.Preferably, the endpoint of radiation tail end 12 is 0.5mm~3mm along first direction and GND4 distance C.
Preferably, neutralizing line along the distance D that first direction extends is λ/22~λ/18.Preferably, neutralize what line extended in a second direction
Distance E is λ/27~λ/23.Preferably, the maximum distance for neutralizing linear distance GND4 is 3 λ/50~6 λ/50.Preferably, grounding point
131 with 141 distance G of feeding point be 1.5mm~5mm.Wherein, λ is the operation wavelength of compact mimo antenna, and λ=(c/
F), c is the light velocity, and f is the working frequency of compact mimo antenna.Specifically, referring to fig. 2 with table 1.
In embodiment 11, as shown in Figs. 1-5, on the basis of embodiment seven, eight, nine or ten, neutralization line is U-shaped knot
Structure is open and is arranged far from GND4；First open end of U-shaped structure has the first son to neutralize line towards the extension of first antenna unit 1,
So that the first son neutralizes line and the first open end forms the first L-type bending part；The second open end the second antenna of direction of U-shaped structure
The extension of unit 2 has the second son to neutralize line, so that the second son neutralizes line and the second open end forms the second L-type bending part.This implementation
In example, neutralization line can (the first L-type bending part, the second L-type bending part and U-shaped structure be certainly by four L-type bending parts of setting
Two L-type bending parts of body), so that the couple current of two antenna elements of removal, improves the isolation of two antenna elements,
And then the signal interference between two antenna elements is effectively reduced, to improve the signal transmission performance of mimo antenna.Value
It must illustrate, in practical applications, neutralizing line also, which can be the L-type structure of only one L-type bending part, to be L there are two tools
The Z-shaped structure or Π type structure or U-shaped structure of type bending part；It can be for multiple (three or three or more) L-type bending parts
The structure being successively spliced to form.Preferably, L-type bending part is preferably right angle L-type bending part；It include multiple L-types when neutralizing line
When bending part, it is preferable that multiple L-type bending part is right angle L-type bending part.Preferably, neutralizing line is about along first party
It is symmetrical set between first antenna unit 1 and the second antenna element 2 to the line of symmetry of extension.
In embodiment 12, as shown in Figs 1-4, on the basis of embodiment seven, eight, nine, ten or 11, first antenna
The shape of the trapezoidal radiation ontology 11 of the trapezoidal radiation ontology 11 and the second antenna element 2 of unit 1 is same or similar.Preferably,
The shape of the radiation tail end 12 of the radiation tail end 12 of first antenna unit 1 and the second antenna element 2 same or similar (or first day
The radiation tail end 12 of line unit 1 is different with the total length of the radiation tail end 12 of the second antenna element 2 or first antenna unit 1
Radiation tail end 12 is different with the shape of the radiation tail end 12 of the second antenna element 2).Preferably, the grounding point of first antenna unit 1
131 is equal or different with the grounding point 131 of 141 distance G of feeding point and the second antenna element 2 and 141 distance G of feeding point.
In summary, first antenna unit 1 can be to be symmetrically arranged along the line of symmetry that first direction extends with the second antenna element 2,
So that this mimo antenna is symmetrical antenna.Certainly, first antenna unit 1 and the second antenna element 2 can also be similar antenna unit
Or similar antenna element, so that this mimo antenna is asymmetrical antenna.
Illustratively, as shown in figure 5, a kind of USB network card of 2.4G frequency range, including PCB, this mimo antenna, USB interface 7
And the plastic shell 6 of PCB He this mimo antenna are covered at, USB interface 7 is connect with PCB, and the corresponding USB interface of plastic shell 6
7 position is provided with through slot；This mimo antenna is set to the other end being oppositely arranged with USB interface 7；This mimo antenna includes first day
Line unit 1, the second antenna element 2 and neutralization line, wherein first antenna unit 1 and the second antenna element 2 are symmetrical arranged；The
The grounding point 131 of one antenna element 1 is connect with the GND4 of PCB, the feeding point 141 and the microstrip line on PCB of first antenna unit 1
Or coaxial line connection, as signal access point；The grounding point 131 of second antenna element 2 is connect with the GND4 of PCB, the second antenna
The feeding point 141 of unit 2 is connect with the microstrip line on PCB or coaxial line, as signal access point.It is worth noting that this
Mimo antenna is also applied to other communication apparatus, such as router, set-top box, air cat, computer, mobile phone, bracelet equipment
In.
It should be noted that above-described embodiment can be freely combined as needed.The above is only of the invention preferred
Embodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (10)
1. a kind of compact mimo antenna characterized by comprising
Neutralize line and two antenna elements, i.e. first antenna unit and the second antenna element；
The first antenna unit is connected with second antenna element by the neutralization line, and the neutralization line includes at least
One L-type bending part；
The antenna element includes trapezoidal radiation ontology, the grounding point connecting with GND, and the feeding point for transmitting signal；
The long bottom edge of the trapezoidal radiation ontology is arranged far from the GND；The long bevel edge of the trapezoidal radiation ontology is close to described
Neutralize line setting；The first end on the long bottom edge of the trapezoidal radiation ontology is connect with the neutralization line, the trapezoidal radiation ontology
The second end extension on long bottom edge have a radiation tail end, between the endpoint of the radiation tail end is equipped with close to the GND and with the GND
Gap；The first end on the long bottom edge of the trapezoidal radiation ontology has the first radiation arm towards GND extension along first direction, described
The end of first radiation arm forms the grounding point, and the short bottom edge of the trapezoidal radiation ontology has second towards GND extension
The end of radiation arm, second radiation arm forms the feeding point.
2. compact mimo antenna according to claim 1, it is characterised in that:
The endpoint of the radiation tail end is 0.5mm~3mm at a distance from the GND；And/or
The grounding point is 1.5mm~5mm at a distance from the feeding point；And/or
The size of line in a second direction that neutralizes is λ/27~λ/23；Wherein, first direction is vertical with second direction, and λ is institute
The operation wavelength of compact mimo antenna is stated, and λ=(c/f), c are the light velocity, f is the work frequency of the compact mimo antenna
Rate；And/or
The extended length of the radiation tail end of the radiation tail end of first antenna unit and the second antenna element is different；And/or
The swept area of the trapezoidal radiation ontology of the trapezoidal radiation ontology and the second antenna element of first antenna unit is different.
3. compact mimo antenna according to claim 1, it is characterised in that:
The second end on the long bottom edge of the trapezoidal radiation ontology has a third radiation arm along the opposite direction extension of first direction, and described the
There are the 4th radiation arm, the 4th radiation in the extension end of three radiation arms in a second direction and far from the trapezoidal radiation ontology extension
There is the 5th radiation arm at the extension end of arm along first direction extension；Wherein, first direction is vertical with second direction.
4. compact mimo antenna according to claim 3, it is characterised in that:
The end of 4th radiation arm of the end and second antenna element of the 4th radiation arm of the first antenna unit
Distance is λ/6~λ/4；Wherein, λ is the operation wavelength of the compact mimo antenna, and λ=(c/f), c are the light velocity, and f is institute
State the working frequency of compact mimo antenna.
5. compact mimo antenna according to claim 3, it is characterised in that:
The extended length of 5th radiation arm is λ/10~2 λ/15；Wherein, λ is the operating wave of the compact mimo antenna
It is long, and λ=(c/f), c are the light velocity, f is the working frequency of the compact mimo antenna；And/or
The extension end of 5th radiation arm is in a second direction or the extension of the opposite direction of second direction has the 6th radiation arm.
6. compact mimo antenna according to claim 1, it is characterised in that:
The second end on the long bottom edge of the trapezoidal radiation ontology extends in a second direction and far from the trapezoidal radiation ontology the
There is the 8th radiation arm at the extension end of seven radiation arms, the 7th radiation arm along first direction extension；Wherein, first direction and second
Direction is vertical.
7. compact mimo antenna according to claim 1, which is characterized in that further include:
Dielectric layer, the GND are set to the dielectric layer；
The antenna element is vertical at the dielectric layer or tiling is set to the dielectric layer.
8. compact mimo antenna described in -7 any one according to claim 1, it is characterised in that:
The neutralization line is U-shaped structure, is open far from the GND；
First open end of the U-shaped structure has the first son to neutralize line towards first antenna unit extension, so that the first son
It neutralizes line and first open end forms the first L-type bending part；
Second open end of the U-shaped structure has the second son to neutralize line towards second antenna element extension, so that the second son
It neutralizes line and second open end forms the second L-type bending part.
9. compact mimo antenna according to claim 8, it is characterised in that:
It is 3 λ/50~6 λ/50 that first son, which neutralizes line and the maximum distance of the GND,；Wherein, λ is the compact MIMO
The operation wavelength of antenna, and λ=(c/f), c are the light velocity, f is the working frequency of the compact mimo antenna；And/or
The groove depth of the U-shaped structure is having a size of λ/22~λ/18；Wherein, λ is the operation wavelength of the compact mimo antenna, and
λ=(c/f), c are the light velocity, and f is the working frequency of the compact mimo antenna.
10. a kind of communication apparatus equipped with compact mimo antenna characterized by comprising
Compact mimo antenna and PCB；
In the compact mimo antenna and line and two antenna elements, i.e. first antenna unit and the second antenna element；Institute
It states first antenna unit and is connected with second antenna element by the neutralization line, and the neutralization line includes at least a L
Type bending part；The antenna element includes trapezoidal radiation ontology, the grounding point for connecting with GND, and for transmitting signal
Feeding point；
The long bottom edge of the trapezoidal radiation ontology is arranged far from the GND；The long bevel edge of the trapezoidal radiation ontology is close to described
Neutralize line setting；The first end on the long bottom edge of the trapezoidal radiation ontology is connect with the neutralization line, the trapezoidal radiation ontology
The second end extension on long bottom edge have a radiation tail end, between the endpoint of the radiation tail end is equipped with close to the GND and with the GND
Gap；The first end on the long bottom edge of the trapezoidal radiation ontology has the first radiation arm towards GND extension along first direction, described
The end of first radiation arm forms the grounding point, and the short bottom edge of the trapezoidal radiation ontology has second towards GND extension
The end of radiation arm, second radiation arm forms the feeding point；
The GND is set to the PCB；
The feeding point is connect with the microstrip line of the PCB or coaxial line.
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| CN201810787577.XA CN109149082B (en) | 2018-07-18 | 2018-07-18 | Compact MIMO antenna and communication equipment comprising same |
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| CN201810787577.XA CN109149082B (en) | 2018-07-18 | 2018-07-18 | Compact MIMO antenna and communication equipment comprising same |
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| CN115117601B (en) * | 2021-03-22 | 2024-01-30 | 广州视源电子科技股份有限公司 | Antenna and electronic equipment |
| CN113540792A (en) * | 2021-07-21 | 2021-10-22 | 重庆传音通讯技术有限公司 | Antenna structure, terminal and processing method of terminal |
| CN117390373A (en) * | 2023-12-13 | 2024-01-12 | 广东企禾科技有限公司 | Communication transmission equipment debugging maintenance management method and system |
| CN117390373B (en) * | 2023-12-13 | 2024-05-17 | 广东企禾科技有限公司 | Communication transmission equipment debugging maintenance management method and system |
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| CN109149082B (en) | 2023-11-10 |
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