CN103531906B - Mobile device - Google Patents
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- CN103531906B CN103531906B CN201310508701.1A CN201310508701A CN103531906B CN 103531906 B CN103531906 B CN 103531906B CN 201310508701 A CN201310508701 A CN 201310508701A CN 103531906 B CN103531906 B CN 103531906B
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Abstract
The invention provides a kind of mobile device.This mobile device at least includes first antenna and the second antenna being disposed adjacent, and first antenna is connected by electric conductor with the second antenna.By the way, the present invention can improve first antenna and the isolation of the second antenna.
Description
Technical field
The present invention relates to mobile device technical field, in particular to a kind of mobile device.
Background technology
At present, the basic employing code division multiple access of mobile phone (Code Division Multiple Access,
CDMA), UMTS (Universal Mobile Telecommunications
System, UMTS) and TD SDMA (Time Division-Synchronous Code
Division Multiple Access, TD-SCDMA) three kinds of coded systems.Existing various standard
There is barrier between each operator, along with the development of science and technology, various standards necessarily break through this
Barrier, therefore mobile phone needs to support multiple types.
Referring to Fig. 1, Fig. 1 is the structural representation of bilateral mobile phone in prior art.Such as Fig. 1 institute
Showing, in prior art, bilateral mobile phone 10 includes CDMA antenna 101 and global system for mobile communications
(Global System of Mobile Communication, GSM) antenna 102, CDMA days
Line 101 and GSM antenna 102 are separately positioned on the both sides of the bottom of bilateral mobile phone 10, to realize
Bilateral mobile phone 10 can be conversed at CDMA and GSM simultaneously.Sending out of GSM antenna 102
Radio band be the reception frequency range of 880-915MHz, CDMA antenna 101 be 880-894MHz,
The transmitting frequency range of GSM antenna 102 essentially coincides with the reception frequency range of CDMA antenna 101,
Duplex communication, when GSM antenna 102 is launched, it is necessary to assure CDMA antenna 101 receives and is not subject to
Interference.But, when CDMA antenna 101 and GSM antenna 102 feed respectively, CDMA
The isolation of antenna 101 and GSM antenna 102 is-11.2dB, and isolation is poor.
Summary of the invention
In view of this, a kind of mobile device is embodiments provided, to improve in mobile device
Isolation between multiple antennas.
First aspect provides a kind of mobile device, and it at least includes the first antenna that is disposed adjacent and the
Two antennas, first antenna is connected by electric conductor with the second antenna.
In conjunction with first aspect, in the implementation that the first is possible, first antenna includes the first ground
Feed point, the second antenna includes the second ground feed point, and electric conductor connects the first ground feed point and the second ground feed point.
In conjunction with the first possible implementation of first aspect, in the implementation that the second is possible
In, the first ground feed point and the second ground feed point are by electric conductor ground connection.
In conjunction with the first possible implementation of first aspect, in the implementation that the third is possible
In, the first ground feed point and the second ground feed point ground connection respectively.
In conjunction with first aspect or the first is to any one possible implementation in the third,
In four kinds of possible implementations, electric conductor is conductor wire, a length of λ/4 of conductor wire, λ's
Span is the frequency range of first antenna and the needs isolation of the second antenna wavelength in propagation medium
Scope.
In conjunction with the 4th kind of possible implementation of first aspect, the 5th kind of possible implementation
In:
λ=λ0/ sqrt(Eeff)
Wherein, λ0Span be the frequency range wave-length coverage in a vacuum needing isolation, Eeff
For the relative dielectric constant of propagation medium, sqrt is square root function.
In conjunction with first aspect or the first is to any one possible implementation in the 5th kind,
In six kinds of possible implementations, mobile device also includes pcb board, and electric conductor is for being arranged on PCB
Microstrip line on plate.
In conjunction with first aspect or the first is to any one possible implementation in the 6th kind,
In seven kinds of possible implementations, electric conductor is made into integration with first antenna and the second antenna.
In conjunction with first aspect or the first is to any one possible implementation in the 7th kind,
In eight kinds of possible implementations, electric conductor is straight line or city wall shape line.
In conjunction with first aspect or the first is to any one possible implementation in the 8th kind,
In nine kinds of possible implementations, first antenna is global system for mobile communications GSM antenna, the
Two antennas are CDMA CDMA antenna.
By such scheme, the invention has the beneficial effects as follows: the first antenna of the present invention and second day
Line is connected by electric conductor, it is possible to improve first antenna and the isolation of the second antenna.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, embodiment will be retouched below
In stating, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below
It is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying
On the premise of creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.Wherein:
Fig. 1 is the structural representation of bilateral mobile phone in prior art；
Fig. 2 is the structural representation of the mobile device of first embodiment of the invention；
Fig. 3 is the structural representation of the mobile device of second embodiment of the invention；
Fig. 4 is that in Fig. 3, first antenna and the second antenna are equivalent to Microwave Net schematic diagram；
Fig. 5 is the structural representation of the mobile device of third embodiment of the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical scheme in the embodiment of the present invention
It is clearly and completely described, it is clear that described embodiment is only that a part of the present invention is real
Execute example rather than whole embodiment.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under not making performing creative labour premise, broadly falls into this
The scope of invention protection.
Shown in Figure 2, Fig. 2 is the structural representation of the mobile device of first embodiment of the invention
Figure.As in figure 2 it is shown, what the mobile device 20 disclosed in the present embodiment at least included being disposed adjacent
First antenna 201 and the second antenna 202, it is preferable that first antenna 201 and the second antenna 202
It is separately positioned on the two bottom sides of mobile device 20.In other embodiments, first antenna 201
With other position that the second antenna 202 can also be arranged on mobile device 20, such as first antenna
201 and second antenna 202 be arranged on the top of mobile device 20.
In the present embodiment, first antenna 201 and the second antenna 202 are connected by electric conductor 203.
When the feed point of first antenna 201 feeds, the portion of electrical current of first antenna 201 passes through electric conductor 203
It is back to ground, the impact on the second antenna 202 of the electric current of reduction first antenna 201；At second day
When the feed point of line 202 feeds, the portion of electrical current of the second antenna 202 is back to by electric conductor 203
Ground, reduces the impact on first antenna 201 of the electric current of the second antenna 202, to improve first antenna
201 and second isolation of antenna 202.
Wherein, first antenna 201 be GSM antenna, CDMA antenna, UMTS antenna or
TD-SCDMA antenna, the second antenna 202 is GSM antenna, CDMA antenna, UMTS
Antenna or TD-SCDMA antenna.
The present invention also provides for the mobile device of the second embodiment, and it is in the shifting disclosed in first embodiment
It is described in detail on the basis of dynamic equipment 20.As it is shown on figure 3, first antenna 201 includes
One ground feed point 204 and the first distributing point 205, the second antenna 202 includes the second ground feed point 206 He
Second distributing point 207.Wherein, the first ground feed point 204 and the second ground feed point 206 pass through electric conductor
203 connect, and electric conductor 203 can be straight line, it is also possible to for other shapes, such as city wall shape line.
First antenna 201 is by the first ground feed point 204 ground connection, and first antenna 201 is by the first distributing point
205 feeds；Second antenna 202 is by the second ground feed point 206 ground connection, and the second antenna 202 passes through
Second distributing point 207 feeds.
In the present embodiment, first antenna 201 can be GSM antenna, and the second antenna 202 can
Think CDMA antenna.Wherein, the S parameter of N number of antenna meets below equation:
Wherein, S parameter is the network port (N number of antenna) relation between incidence wave and echo,
bNFor normalization echo, aNFor normalized incidence wave.
The isolation (Isolation) of any two antenna i and antenna j meets below equation:
Isolation=10 log | Sij|2(2)
Sij=bi/aj(ai=0,1,2 ... N, i ≠ j) (3)
Referring to Fig. 4, Fig. 4 is that in Fig. 3, first antenna and the second antenna are equivalent to Microwave Net and show
It is intended to.As shown in Figure 4, first antenna 201 includes input port 301 and output port 302,
Second antenna 202 includes input port 303 and output port 304, a1For input port 301
Input energy, b1For the output energy of output port 302, a2Input energy for input port 303
Amount, b2For the output energy of output port 304, the first antenna 201 and S of the second antenna 202
Parameter and isolation meet below equation:
Wherein, the first ground feed point 204 and the second ground feed point 206 are connected by electric conductor 203, defeated
The energy going out port 304 output reduces, the b of formula (4)2Diminishing, the numerical value of isolation diminishes,
Therefore the isolation (Isolation) of first antenna 201 and the second antenna 202 becomes big.Such as,
The numerical value of the isolation of first antenna 201 and the second antenna 202 is varied down to-12dB from-11dB, the
The isolation of one antenna 201 and the second antenna 202 becomes big.
In the present embodiment, electric conductor 203 is conductor wire, and the length of conductor wire is set to λ/4,
Wherein the span of λ is that the frequency range of first antenna 201 and the needs isolation of the second antenna 202 is Jie
Wave-length coverage in matter, first antenna 201 and the second antenna 202 need the frequency range of isolation to be first
The frequency range that antenna 201 and the second antenna 202 overlap.λ meets below equation:
λ=λ0/ sqrt(Eeff) (5)
Wherein, λ0Span be the frequency range wave-length coverage in a vacuum needing isolation, Eeff
For the relative dielectric constant of medium, sqrt is square root function.Preferably, λ is first antenna 201
The intermediate value of the frequency range wave-length coverage in media as well of isolation is needed with described second antenna 202.Example
As: the frequency range needing isolation is F1-F2, and this frequency range wave-length coverage in propagation medium is λ 1-λ 2,
The span of λ is λ 1-λ 2, it is preferable that λ is (λ 1+ λ 2)/2.
When a length of λ/4 of conductor wire, conductor wire is equivalent to the microstrip line of an impedance transformation,
When needing the frequency range of isolation, conductor wire has real impedance characteristic, and now conductor wire consumed energy is big,
To reduce first antenna 201 to the impact of the second antenna 202 or the second antenna 202 to first day
The impact of line 201, therefore the isolation of first antenna 201 and the second antenna 202 is maximum.
In the present embodiment, electric conductor 203 can be with first antenna 201 and the second antenna 202 1
System becomes.When the first distributing point 205 feeds, the electric current of first antenna 201 can pass through the first ground
Feed point 204 and by electric conductor 203 from the second ground feed point 206 of the second antenna 202 flow back into ground,
Reduce the first antenna 201 impact on the second antenna 202；When the second distributing point 207 feeds,
The electric current of the second antenna 202 can pass through the second ground feed point 206 and by electric conductor 203 from first day
First ground feed point 204 of line 201 flow back into ground, reduces by the second antenna 202 to first antenna 201
Impact；And then improve first antenna 201 and the isolation of the second antenna 202.
In other embodiments, electric conductor 203 can be arranged on by those of ordinary skill in the art
The miscellaneous part of mobile device 20, such as, be the print being arranged on mobile device 20 by electric conductor 203
Microstrip line on printed circuit board (Printed Circuit Board, PCB).
The present invention also provides for the mobile device of the 3rd embodiment, and it is in the shifting disclosed in the second embodiment
It is described in detail on the basis of dynamic equipment.Mobile device disclosed in the present embodiment is implemented with second
Mobile device difference disclosed in example is: as it is shown in figure 5, the first ground feed point 204 and
Two ground feed point 206 are connected by electric conductor 203, and the first ground feed point 204 and the second ground feed point
206 by electric conductor 203 ground connection, i.e. first antenna 201 and the second antenna 202 altogether.Wherein,
Electric conductor 203 can be straight line, it is also possible to for city wall shape line.
In the present embodiment, when the first distributing point 205 feeds, the electric current meeting of first antenna 201
Directly it flow back into ground by electric conductor 203, relative to the second antenna 202 of the second embodiment, stream
Electric current minimizing through the second antenna 202；When the second distributing point 207 feeds, the second antenna 202
Electric current can directly by electric conductor 203 flow back into ground, relative to the first antenna of the second embodiment
201, the electric current flowing through first antenna 201 reduces.Accordingly, with respect to disclosed in the second embodiment
Mobile device, first antenna 201 and the second antenna 202 in the mobile device disclosed in the present embodiment
Between isolation more preferable.
Wherein, the mobile device mentioned by present invention full text, as a example by mobile phone, is certainly not limited to hands
Machine, it is also possible to be panel computer (PAD), PC etc..
In sum, first antenna and second antenna of the present invention is connected by electric conductor, it is possible to change
Kind first antenna and the isolation of the second antenna.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention,
Every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process conversion, or
Directly or indirectly being used in other relevant technical fields, the patent being the most in like manner included in the present invention is protected
In the range of protecting.
Claims (7)
1. a mobile device, it is characterised in that described mobile device at least includes being disposed adjacent
First antenna and the second antenna, described first antenna is connected by electric conductor with described second antenna；
Described first antenna includes that the first ground feed point and the first distributing point, described second antenna include the second ground
Feed point and the second distributing point, described electric conductor connects described first ground feed point and described second ground feedback
Point, described first ground feed point and described second ground feed point ground connection respectively；
When described first distributing point feed, the electric current of described first antenna is presented by described first ground
Put and flow back into ground by described electric conductor from the second ground feed point of described second antenna；
When described second distributing point feed, the electric current of described second antenna is presented by described second ground
Put and flow back into ground by described electric conductor from the first ground feed point of described first antenna.
Mobile device the most according to claim 1, it is characterised in that described electric conductor is for leading
Electric wire, a length of λ/4 of described conductor wire, the span of described λ be described first antenna and
Described second antenna needs the frequency range of isolation wave-length coverage in propagation medium.
Mobile device the most according to claim 2, it is characterised in that:
λ=λ0/sqrt(Eeff)
Wherein, λ0Span be the described frequency range wave-length coverage in a vacuum needing isolation,
Eeff is the relative dielectric constant of propagation medium, and sqrt is square root function.
4. according to the arbitrary described mobile device of claim 1-3, it is characterised in that described movement
Equipment also includes that pcb board, described electric conductor are the microstrip line being arranged on described pcb board.
5. according to the arbitrary described mobile device of claim 1-3, it is characterised in that described conduction
Body is made into integration with described first antenna and described second antenna.
6. according to the arbitrary described mobile device of claim 1-3, it is characterised in that described conduction
Body is straight line or city wall shape line.
7. according to the arbitrary described mobile device of claim 1-3, it is characterised in that described first
Antenna is global system for mobile communications GSM antenna, and described second antenna is CDMA CDMA
Antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310508701.1A CN103531906B (en) | 2013-10-24 | 2013-10-24 | Mobile device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310508701.1A CN103531906B (en) | 2013-10-24 | 2013-10-24 | Mobile device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103531906A CN103531906A (en) | 2014-01-22 |
| CN103531906B true CN103531906B (en) | 2016-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310508701.1A Active CN103531906B (en) | 2013-10-24 | 2013-10-24 | Mobile device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105027354B (en) * | 2014-01-28 | 2017-08-25 | 华为技术有限公司 | Antenna system, small base station, terminal and the method for isolating two antennas |
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| US7701401B2 (en) * | 2007-07-04 | 2010-04-20 | Kabushiki Kaisha Toshiba | Antenna device having no less than two antenna elements |
| CN102074786A (en) * | 2009-11-19 | 2011-05-25 | 雷凌科技股份有限公司 | Double-frequency printed circuit antenna for electronic device |
| CN102280696A (en) * | 2011-04-28 | 2011-12-14 | 上海交通大学 | Half-wave transmission decoupling small-space microstrip array antenna |
| US8542158B2 (en) * | 2007-08-20 | 2013-09-24 | Ethertronics, Inc. | Multi-band MIMO antenna |
| CN103348538A (en) * | 2011-02-09 | 2013-10-09 | 株式会社Mobitech | Mimo/diversity antenna for improving the isolation of a specific frequency band |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101093365B1 (en) * | 2006-09-27 | 2011-12-14 | 엘지전자 주식회사 | Internal Antenna Apparatus for Multi-In Multi-Out and Diversity Function |
| KR20100073144A (en) * | 2008-12-22 | 2010-07-01 | 엘지전자 주식회사 | Mobile terminal having mimo antenna |
| TWI420743B (en) * | 2009-11-13 | 2013-12-21 | Ralink Technology Corp | Printed dual-band antenna for electronic device |
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2013
- 2013-10-24 CN CN201310508701.1A patent/CN103531906B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7701401B2 (en) * | 2007-07-04 | 2010-04-20 | Kabushiki Kaisha Toshiba | Antenna device having no less than two antenna elements |
| US8542158B2 (en) * | 2007-08-20 | 2013-09-24 | Ethertronics, Inc. | Multi-band MIMO antenna |
| CN102074786A (en) * | 2009-11-19 | 2011-05-25 | 雷凌科技股份有限公司 | Double-frequency printed circuit antenna for electronic device |
| CN103348538A (en) * | 2011-02-09 | 2013-10-09 | 株式会社Mobitech | Mimo/diversity antenna for improving the isolation of a specific frequency band |
| CN102280696A (en) * | 2011-04-28 | 2011-12-14 | 上海交通大学 | Half-wave transmission decoupling small-space microstrip array antenna |
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| CN103531906A (en) | 2014-01-22 |
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Effective date of registration: 20171103 Address after: Metro Songshan Lake high tech Industrial Development Zone, Guangdong Province, Dongguan City Road 523808 No. 2 South Factory (1) project B2 -5 production workshop Patentee after: Huawei terminal (Dongguan) Co.,Ltd. Address before: 518100 Longgang District, Guangdong, Bantian HUAWEI base B District, building 2, building No. Patentee before: HUAWEI DEVICE Co.,Ltd. |
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Address after: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee after: HUAWEI DEVICE Co.,Ltd. Address before: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee before: Huawei terminal (Dongguan) Co.,Ltd. |
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Effective date of registration: 20210421 Address after: Unit 3401, unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Donghai community, Xiangmihu street, Futian District, Shenzhen, Guangdong 518040 Patentee after: Honor Device Co.,Ltd. Address before: Metro Songshan Lake high tech Industrial Development Zone, Guangdong Province, Dongguan City Road 523808 No. 2 South Factory (1) project B2 -5 production workshop Patentee before: HUAWEI DEVICE Co.,Ltd. |
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