CN106981725B - A kind of portable multi-antenna terminal of the Internet of Things of metal shell - Google Patents
A kind of portable multi-antenna terminal of the Internet of Things of metal shell Download PDFInfo
- Publication number
- CN106981725B CN106981725B CN201710164805.3A CN201710164805A CN106981725B CN 106981725 B CN106981725 B CN 106981725B CN 201710164805 A CN201710164805 A CN 201710164805A CN 106981725 B CN106981725 B CN 106981725B
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- Prior art keywords
- medium substrate
- antenna
- metal shell
- inverse
- internet
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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
- H01Q1/52—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
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Support Of Aerials (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a kind of portable multi-antenna terminals of the Internet of Things of metal shell, belong to microwave technology and Internet of Things field.It is the identical inverse-F antenna unit of 8 sizes of medium substrate Top-layer Design Method in 2 20 ranges in relative dielectric constant, as metal, the ground between two often neighbouring same polarity units adds T-type minor matters to bottom, to ensure high isolation degree.Added metal shell in the middle part of dorsal shield addition twice gap, while improving matching and the isolation of 4, middle part of medium substrate antenna element.The combined antenna bandwidth of the present invention is up to 250MHz and ensures the isolation of 10dB or more, has the characteristics that simple in structure, small, cost of manufacture is cheap, application range is very extensive.
Description
Technical field
The present invention relates to a kind of portable multi-antenna terminals of the Internet of Things of metal shell, belong to microwave technology and Internet of Things neck
Domain.
Background technology
As key technology in next-generation mobile communications, mimo antenna can improve the capacity and reliability of channel.Simultaneously
Internet of Things portable terminal is more and more universal in recent years, and requirement of the people to these terminals is not only powerful function, and
Possess beautiful appearance.And shell uses metal material Internet of Things portable terminal because its appearance is more rich in metal light
Pool, feel is more comfortable, is liked by users.Design manufacturer thus increasingly emphasized in design shell use all-metal material
Internet of Things portable terminal.
Because the size of Internet of Things portable terminal is limited, with the increase of antenna element, the isolation between each unit
Degree will reduce.The method for promoting isolation in small space at present has three classes：One kind is in port plus the decoupling of complexity
Network；Second class is using orthogonal polarization characteristic come decoupling；Third class is in metal to take some means next decoupling.
Invention content
Technical problem to be solved by the invention is to provide a kind of portable multi-antenna terminals of the Internet of Things of metal shell, make
Extend two neighbouring same polarization antenna element current paths to improve isolation, and in metal dorsal shield with T-type minor matters
The appropriate location at middle part is cracked, and the impedance matching of four antenna elements in the middle part of medium substrate is improved.The Internet of Things is portable more
For antenna terminal in the case where meeting performance requirement, size is small, design is simple, at low cost and be easily achieved.
The present invention uses following technical scheme to solve above-mentioned technical problem：
The present invention provides a kind of portable multi-antenna terminal of the Internet of Things of metal shell, including medium substrate, first to
Eight inverse-F antenna units, first to fourth T shapes minor matters and metal shell；
Wherein, the first to the 8th inverse-F antenna unit is arranged two-by-two respectively at four edges of the lower surface of medium substrate, and
Two symmetrical axial symmetry about medium substrate；
First to fourth T shape minor matters are separately positioned on four edges of the upper surface of medium substrate, and each T shapes minor matters are being situated between
The projection of matter base lower surface is located between two inverse-F antenna units, and the two inverse-F antenna units are about T between the two
Shape minor matters are symmetrical；
The upper surface of medium substrate is also set up there are one metal ground plate, metal ground plate respectively with first to fourth T shapes
Minor matters connect, and metal ground plate is not be overlapped in the projection of medium substrate lower surface and the first to the 8th inverse-F antenna unit；
The earth point of first to the 8th inverse-F antenna unit is connect by metallization VIA with metal ground plate respectively；
Metal shell is arranged in the outside of medium substrate, and there are gaps between medium substrate；Metal shell includes dorsal shield
And frame, also set up that there are two parallel rectangular channels on dorsal shield, two rectangular channels are about medium substrate long side direction broken line pair
Claim, and projection and inverse-F antenna cells overlap of two rectangular channels in medium substrate lower surface.
As a further optimization solution of the present invention, there are one respectively being opened respectively at a pair of short edges of the dorsal shield of metal shell
Annular groove.
As a further optimization solution of the present invention, slot respectively at the both ends of two long sides of frame, respectively with dorsal shield
On two annular grooves connection.
As a further optimization solution of the present invention, the fluting on dorsal shield on two annular grooves and frame is all made of non-gold
Belong to substance filling.
As a further optimization solution of the present invention, the antenna terminal is symmetrical about two symmetry axis of medium substrate.
The present invention has the following technical effects using above technical scheme is compared with the prior art：A kind of metal of the present invention
The portable multi-antenna terminal of Internet of Things of shell still ensures that each of multiaerial system using metal shell
Unit has good impedance matching.It is realized on the limited Internet of Things portable terminal of size simultaneously higher between each unit
Isolation.Thus this is a kind of novel appearance, and simple in structure, manufacture craft requires low Internet of Things portable terminal.
Description of the drawings
Fig. 1 is the Facad structure and reference coordinate schematic diagram of the Internet of Things portable terminal of the metal shell.
Fig. 2 is the 3 D stereo schematic diagram and reference coordinate schematic diagram of the Internet of Things portable terminal of the metal shell.
Fig. 3 is the antenna element 2.1 and 2.5 reflectance factor characteristic schematic diagrames that portable terminal is calculated using HFSS softwares.
Fig. 4 is that carry-over factor shows between the antenna element 2.1 and other units for calculating portable terminal using HFSS softwares
It is intended to.
Fig. 5 is that carry-over factor shows between the antenna element 2.5 and other units for calculating portable terminal using HFSS softwares
It is intended to.
Specific implementation mode
Technical scheme of the present invention is described in further detail below in conjunction with the accompanying drawings：
Attached drawing 1, Fig. 2 are compareed, a kind of structure of the portable multi-antenna terminal of the Internet of Things of metal shell of the present invention is：It is being situated between
The metal of the upper surface setting H-shaped of matter substrate 15 and with metal 5 four T-type minor matters 6 connecting respectively；Four T-type branches
Section 6 is separately positioned on the middle part at four edges of medium substrate, and two opposite T-type minor matters 6 are symmetrical respectively about X, Y-axis.
Eight inverse-F antenna units 2.1 to 2.8 are arranged in the lower surface of medium substrate 1, and eight inverse-F antenna units are in upper table
The projection in face is not with metal 5 be overlapped.Four in medium substrate 1 are arranged in eight inverse-F antenna units 2.1 to 2.8 two-by-two respectively
Edge, and inverse-F antenna unit 2.2,2.4,2.5,2.6 and inverse-F antenna unit 2.1,2.3,2.7,2.8 is symmetrical respectively about Y-axis,
Inverse-F antenna unit 2.1,2.2,2.6,2.7 and inverse-F antenna unit 2.3,2.4,2.5,2.8 is symmetrical respectively about X-axis.
There are one distributing point 3 and earth point 4 on each inverse-F antenna unit, the earth point 4 of antenna passes through metallization VIA
With the metal of 1 top layer of medium substrate 5 are connected.
T-type minor matters 6 are located between two inverse-F antenna units, and the inverse-F antenna unit of 6 both sides of T-type minor matters is about T-type branch
Section 6 is symmetrical.
The outside of medium substrate 1 is additionally provided with metal shell, and metal shell is the upper hatch frame for including dorsal shield and frame,
There are certain gaps between metal shell and medium substrate.The rectangular channel of Y-axis, and two are parallel to there are two being also set up on dorsal shield
A rectangular channel is symmetrical about Y-axis.
Technical scheme of the present invention is further elaborated below by specific embodiment, wherein the medium of the present embodiment
Substrate according to relative dielectric constant is 2.65, thickness is 2 millimeters, and medium substrate is 0.3mm at a distance from metal shell.
Compareing attached drawing 3, Fig. 4 and Fig. 5, wherein S11 indicates the reflectance factor of the feed port 3 of inverse-F antenna unit 2.1,
S55 indicates the reflectance factor of the feed port of inverse-F antenna unit 2.5, S12 indicate the feed port of inverse-F antenna unit 2.1 with
Transmission coefficient between 2.2 feed port, S16 indicate the feed port of inverse-F antenna unit 2.1 with 2.6 feed port it
Between transmission coefficient, S17 indicates the transmission coefficient between 2.1 feed port of inverse-F antenna unit and 2.7 feed port, S54
Indicate that the transmission coefficient between 2.5 feed port of inverse-F antenna unit and 2.4 feed port, S56 indicate inverse-F antenna unit
Transmission coefficient between 2.5 feed port and 2.6 feed port, S57 indicate the feed port of inverse-F antenna unit 2.5 with
Transmission coefficient between 2.7 feed port, S58 indicate the feed port of inverse-F antenna unit 2.5 with 2.8 feed port it
Between transmission coefficient
It will be seen that the reflection coefficient curve of S11 corresponding to dotted line and the S55 corresponding to solid line from Fig. 3
The impedance matching bandwidth of reflection coefficient curve overlapping is 3.28GHz-3.53GHz.From Fig. 4, it may be seen that in matching strip
Transmission coefficient is less than -10dB in width.In same Fig. 5, we can see that in the impedance matching bandwidth of antenna element, antenna list
The transmission coefficient of member is respectively less than -10dB.
In conclusion the portable terminal ensure that respectively under the size of very little by polarization orthogonal and addition T-type minor matters
Smaller degree of coupling between antenna element, at the same by the middle part of metal dorsal shield position appropriate crack and improve antenna element
Resistance matching problem.There is the terminal antenna to have the features such as higher efficiency, simple structure and smaller volume again so that
The antenna possesses very extensive application range.
Polarization of the present invention for the polarization mode and four units in middle part of four units of left section of medium substrate and right end
Mode is orthogonal, and the like-polarized unit of two same polarization units of two same polarization units of left end and right end and four, middle part uses
On the ground plus the method for T-type minor matters all keeps preferable isolation between unit 8 to realize.Another aspect terminal uses outside metal
After shell, the matching of antenna will deteriorate, and the design in the suitable place of metal dorsal shield using cracking, to realize good matching.
The present invention will propose a kind of design method of the portable multi-antenna terminal of metal shell Internet of Things, using metal
Eight antenna elements have good matching in the case of shell, and have very high isolation between each other.In addition, design is outer
Shell is that the Internet of Things portable terminal of metal material meets trend instantly.
Those skilled in the art of the present technique are it is understood that unless otherwise defined, all terms used herein (including skill
Art term and scientific terminology) there is meaning identical with the general understanding of the those of ordinary skill in fields of the present invention.Also
It should be understood that those terms such as defined in the general dictionary should be understood that with in the context of the prior art
The consistent meaning of meaning, and unless defined as here, will not be explained with the meaning of idealization or too formal.
The above, the only specific implementation mode in the present invention, but scope of protection of the present invention is not limited thereto, appoints
What is familiar with the people of the technology within the technical scope disclosed by the invention, it will be appreciated that expects transforms or replaces, and should all cover
Within the scope of the present invention, therefore, the scope of protection of the invention shall be subject to the scope of protection specified in the patent claim.
Claims (5)
1. a kind of portable multi-antenna terminal of the Internet of Things of metal shell, which is characterized in that including medium substrate, first to the 8th
Inverse-F antenna unit, first to fourth T shapes minor matters and metal shell；
Wherein, the first to the 8th inverse-F antenna unit is arranged two-by-two respectively at four edges of the lower surface of medium substrate, and about
Two symmetrical axial symmetry of medium substrate；
First to fourth T shape minor matters are separately positioned on four edges of the upper surface of medium substrate, and each T shapes minor matters are in medium base
The projection of plate lower surface is located between two inverse-F antenna units, and the two inverse-F antenna units are about T shape branches between the two
Section is symmetrical；
The upper surface of medium substrate is also set up there are one metal ground plate, metal ground plate respectively with first to fourth T shape minor matters
Connection, and metal ground plate is not be overlapped in the projection of medium substrate lower surface and the first to the 8th inverse-F antenna unit；
The earth point of first to the 8th inverse-F antenna unit is connect by metallization VIA with metal ground plate respectively；
Metal shell is arranged in the outside of medium substrate, and there are gaps between medium substrate；Metal shell includes dorsal shield and side
Frame, also sets up that there are two parallel rectangular channels on dorsal shield, and two rectangular channels are symmetrical about medium substrate long side direction broken line, and
Projection and inverse-F antenna cells overlap of two rectangular channels in medium substrate lower surface.
2. a kind of portable multi-antenna terminal of Internet of Things of metal shell according to claim 1, which is characterized in that in gold
Belong to annular groove there are one respectively being opened respectively at a pair of short edges of the dorsal shield of shell.
3. a kind of portable multi-antenna terminal of Internet of Things of metal shell according to claim 2, which is characterized in that on side
The both ends of two long sides of frame are slotted respectively, are connected to respectively with two annular grooves on dorsal shield.
4. a kind of portable multi-antenna terminal of Internet of Things of metal shell according to claim 3, which is characterized in that dorsal shield
Fluting on upper two annular grooves and frame is all made of nonmetallic substance filling.
5. a kind of portable multi-antenna terminal of Internet of Things of metal shell according to claim 1, which is characterized in that the day
Line terminal is symmetrical about two symmetry axis of medium substrate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710164805.3A CN106981725B (en) | 2017-03-20 | 2017-03-20 | A kind of portable multi-antenna terminal of the Internet of Things of metal shell |
| PCT/CN2017/080458 WO2018170967A1 (en) | 2017-03-20 | 2017-04-13 | Internet-of-things portable multi-antenna terminal with metal housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710164805.3A CN106981725B (en) | 2017-03-20 | 2017-03-20 | A kind of portable multi-antenna terminal of the Internet of Things of metal shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106981725A CN106981725A (en) | 2017-07-25 |
| CN106981725B true CN106981725B (en) | 2018-07-20 |
Family
ID=59338887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710164805.3A Active CN106981725B (en) | 2017-03-20 | 2017-03-20 | A kind of portable multi-antenna terminal of the Internet of Things of metal shell |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106981725B (en) |
| WO (1) | WO2018170967A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123224A (en) * | 2018-01-30 | 2018-06-05 | 厦门美图移动科技有限公司 | Antenna structure, electronic equipment dorsal shield and electronic equipment |
| CN108736130B (en) | 2018-07-11 | 2020-01-14 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN109037918B (en) * | 2018-07-24 | 2021-01-08 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
| CN110011071A (en) * | 2018-12-28 | 2019-07-12 | 瑞声科技(新加坡)有限公司 | Mobile terminal antenna system, mobile terminal |
| CN110061349B (en) * | 2019-05-08 | 2020-04-28 | 清华大学 | Broadband 5G MIMO mobile phone antenna based on orthogonal mode pair |
| CN110112559B (en) * | 2019-06-05 | 2020-04-28 | 西安电子科技大学 | Miniaturized dual-band eight-unit MIMO terminal antenna suitable for 5G |
| CN113517546B (en) * | 2020-04-10 | 2023-05-12 | 华为技术有限公司 | Electronic equipment |
| CN111525237B (en) * | 2020-04-30 | 2021-08-13 | 维沃移动通信有限公司 | Double-antenna decoupling structure and electronic equipment |
| CN114512800B (en) * | 2020-11-17 | 2023-07-18 | 华为技术有限公司 | Antenna unit and electronic equipment comprising same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102301531A (en) * | 2009-02-03 | 2011-12-28 | 捷讯研究有限公司 | Multiple input, multiple output antenna for handheld communication devices |
| CN102884680A (en) * | 2010-05-10 | 2013-01-16 | 捷讯研究有限公司 | High isolation multiple port antenna array handheld mobile communication devices |
| CN106058438A (en) * | 2015-04-08 | 2016-10-26 | 三星电机株式会社 | Antenna device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100859864B1 (en) * | 2005-06-13 | 2008-09-24 | 삼성전자주식회사 | Plate board type MIMO array antenna comprising isolation element |
-
2017
- 2017-03-20 CN CN201710164805.3A patent/CN106981725B/en active Active
- 2017-04-13 WO PCT/CN2017/080458 patent/WO2018170967A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102301531A (en) * | 2009-02-03 | 2011-12-28 | 捷讯研究有限公司 | Multiple input, multiple output antenna for handheld communication devices |
| CN102884680A (en) * | 2010-05-10 | 2013-01-16 | 捷讯研究有限公司 | High isolation multiple port antenna array handheld mobile communication devices |
| CN106058438A (en) * | 2015-04-08 | 2016-10-26 | 三星电机株式会社 | Antenna device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018170967A1 (en) | 2018-09-27 |
| CN106981725A (en) | 2017-07-25 |
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