CN107359419A - Antenna system and mobile terminal - Google Patents
Antenna system and mobile terminal Download PDFInfo
- Publication number
- CN107359419A CN107359419A CN201710725274.0A CN201710725274A CN107359419A CN 107359419 A CN107359419 A CN 107359419A CN 201710725274 A CN201710725274 A CN 201710725274A CN 107359419 A CN107359419 A CN 107359419A
- Authority
- CN
- China
- Prior art keywords
- tuning switch
- antenna system
- strip crevice
- inductance
- capacitive element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 230000005611 electricity Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant 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
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The application is related to communication technique field, more particularly to a kind of antenna system and mobile terminal, including matching network, the first capacitive element, tuning switch, systematically and mainboard, mainboard is provided with strip crevice, strip crevice have openend, first while and when second, openend is located at the one end of strip crevice along its length, and openend is communicated to the edge of the mainboard；The periphery of strip crevice is with systematically electrically connecting；First side is relative perpendicular to the direction of length direction with the second edge, and the both ends of matching network, the first capacitive element and tuning switch are connected to first while with second, and the first capacitive element is between matching network and tuning switch, to carry out capacitive feed.The application only just can cover multiple frequency ranges by a tuning switch, reduce the quantity of tuning switch, loss caused by multiple tuning switch be reduced, so as to improve antenna performance.
Description
Technical field
The application is related to communication technique field, more particularly to a kind of antenna system and mobile terminal.
Background technology
Mobile terminal such as mobile phone at present, all-metal construction prevailing, corresponding antenna use all-metal Antenna Design, all-metal
Antenna Design thinking is a lot, because the intrinsic antenna mode of all-metal antenna is relatively more fixed, to cover all frequency bands antenna design, because
This, uses double antenna handoff technique more, utilizes DPDT (Double Pole Double Throw, double-point double-throw switch) and multiple
Tuning switch switches antenna band, this antenna system, because the quantity of tuning switch is generally higher than two, hence it is evident that increase design
Cost, loss caused by especially increasing switch, influences antenna performance.
The content of the invention
This application provides a kind of antenna system and mobile terminal, above mentioned problem can solve the problem that.
The first aspect of the application provides a kind of antenna system, including：
Matching network,
First capacitive element,
Tuning switch,
Systematically,
Mainboard, the mainboard are provided with strip crevice, and the periphery of the strip crevice systematically electrically connects with described；It is described
Strip crevice have openend, first while and when second, the openend is located at one of the strip crevice along its length
End, the openend is communicated to the edge of the mainboard；First side is with second edge perpendicular to the length direction
Direction it is relative, and the both ends of the matching network, first capacitive element and the tuning switch be connected to it is described
First while with described second, and first capacitive element is between the matching network and the tuning switch, to be held
Property feed.
Preferably, first capacitive element and distance of the openend along the length direction are 3~4mm.
Preferably, the tuning switch is located between midpoint and first capacitive element of the strip crevice.
Preferably, the tuning switch includes inductance part, and the tuning switch has inductance access state and open-circuit condition,
When the tuning switch is in inductance access state, described first while by the inductance part with described second
Connected at the tuning switch；
When the tuning switch is in open-circuit condition, described first breaks while with described second at the tuning switch
Open.
Preferably, the inductance part includes the first inductance part and the second inductance part, or the inductance part is controllable impedance
Part.
Preferably, the matching network includes the second capacitive element, the 3rd inductance part and the 4th inductance part, second electric capacity
Part is in parallel with the 3rd inductance part, and the circuit after parallel connection is connected with the 4th inductance part.
Preferably, the length of the strip crevice is 40~45mm,
Preferably, the width of the strip crevice is 2~3mm.
The second aspect of the application provides a kind of mobile terminal, including the as above antenna system described in any one.
Preferably, the strip crevice on the mainboard of the antenna system is arranged at the top of the mobile terminal.
The technical scheme that the application provides can reach following beneficial effect：
Antenna system provided herein, sets strip crevice on mainboard, strip crevice first while with second
Between be provided with matching network, the first capacitive element and tuning switch, strip crevice itself can produce 0.5 times of resonance wavelength,
Capacitive feed is formed at distributing point by the first capacitive element, strip crevice can also produce 0.25 times of resonance wavelength, to produce
Medium-high frequency resonance, then the tuning of logical matching network, can tune and produce intermediate frequency resonance, therefore, this antenna system can be simultaneously
In generation, low, high frequency resonance, while the resonant frequency of low-frequency resonant can also be tuned by increasing tuning switch,
So as to widen the band bandwidth of low-frequency resonant, it is clear that the antenna system of the application just can only be covered by a tuning switch
Multiple frequency ranges are covered, reduce the quantity of tuning switch, loss caused by multiple tuning switch are reduced, so as to improve antenna system
Performance.
It should be appreciated that the general description and following detailed description of the above are only exemplary, this can not be limited
Application.
Brief description of the drawings
Fig. 1 is a kind of structural representation of specific embodiment of antenna system provided herein；
Fig. 2 is a kind of partial enlarged view of specific embodiment of antenna system provided herein；
Fig. 3 is a kind of return loss plot of specific embodiment of antenna system provided herein；
Fig. 4 is a kind of radiation efficiency figure of specific embodiment of antenna system provided herein.
Reference：
10- matching networks；
The capacitive elements of 11- second；
The inductance parts of 12- the 3rd；
The inductance parts of 13- the 4th；
The capacitive elements of 20- first；
30- tuning switch；
40- is systematically；
50- mainboards；
51- strip crevices；
511- openends；
The sides of 512- first；
The sides of 513- second.
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the application
Example, and be used to together with specification to explain the principle of the application.
Embodiment
The application is described in further detail below by specific embodiment and with reference to accompanying drawing.
As shown in Figure 1-2, the embodiment of the present application provides a kind of antenna system, available for mobile terminal, such as mobile phone, antenna
System includes matching network 10, the first capacitive element 20, tuning switch 30, systematically 40 and mainboard 50, and systematically 40 and mainboard
50 are stacked, and mainboard 50 is provided with strip crevice 51, and the periphery of strip crevice 51 electrically connects with systematically 40, usually, edge
Perpendicular to the direction of mainboard 50, the projection of strip crevice 51 should be located at systematically in 40 projection, make the periphery of strip crevice 51
Directly with systematically contacting connection.Strip crevice 51 has openend 511, first at 512 and second 513, as shown in Fig. 2
Openend 511 is located at the X along its length of strip crevice 51 one end, and openend 511 is communicated to the edge of mainboard 50, i.e. bar shaped
The one end in gap 51 is communicated to the edge of mainboard 50；First at 512 and second 513 along perpendicular to the length side of strip crevice 51
It is relative to X direction, i.e., first at 512 and second 513 relative direction perpendicular to above-mentioned length direction X.Matching network 10,
The both ends of first capacitive element 20 and tuning switch 30 are connected to first at 512 and second 513, that is to say, that first
While 512 with second while 513 be connected respectively in three opening positions, pass through matching network 10, the first electric capacity respectively in three opening positions
Part 20 and tuning switch 30 realize connection, and the first capacitive element 20 is positioned at matching network 10 and tuning switch 30 between, with progress
Capacitive is fed, that is to say, that the opening position that the first capacitive element 20 is connected with strip crevice 51 is distributing point, so as to be formed first day
Line, the second antenna and third antenna.
Using above-mentioned antenna system, strip crevice 51 is set on mainboard 50, strip crevice 51 first at 512 and second
Matching network 10, the first capacitive element 20 and tuning switch 30, strip crevice 51 are provided between 513 itself can produce 0.5
Times resonance wavelength, by increasing by the first capacitive element 20, capacitive feed is formed at distributing point, strip crevice 51 can also produce
0.25 times of resonance wavelength, to produce medium-high frequency resonance, then the tuning of logical matching network 10, and can, which enough tunes, produces intermediate frequency resonance,
Therefore, this antenna system can produce simultaneously in, low, high frequency resonance, while can also be right by increasing tuning switch 30
The resonant frequency of low-frequency resonant is tuned, so as to widen the band bandwidth of low-frequency resonant, it is clear that the antenna system of the application
Multiple frequency ranges just only can be covered by a tuning switch 30, CA (carrier aggregations can be advantageous to：Refer to scrappy LTE frequencies
Section is merged into a virtual broader frequency range), to improve message transmission rate, reduce delay；Reduce tuning switch simultaneously
30 quantity, loss caused by multiple tuning switch is reduced, so that antenna performance is improved.
Generally, strip crevice 51 is in rectangular configuration, and openend 511 is located at a broadside of rectangular configuration, the first side 512
It is respectively two long sides of rectangular configuration with the second side 513, three sides (except one side where openend 511) of rectangular configuration are
It is connected with systematically 40.
Because the length of strip crevice 51 can influence the frequency of antenna system, therefore, in order to meet the aerial system of the application
The frequency requirement of system, the length L of strip crevice 51 is preferably 40~45mm, such as 40mm, 41mm, 43mm, 44mm, 45mm.
Although the width of strip crevice 51 is bigger, high-frequency band can be more obvious, considers on mainboard 50 except setting bar
Outside shape gap 51, various components can be also connected, and the space of mainboard 50 is limited, in order to both ensure the performance requirement of high band,
And can enough has enough space to set electronic component, and the width W of strip crevice 51 is arranged to 2~3mm, as 2mm, 2.5mm,
3mm。
Alternatively, the first capacitive element 20 and the distance of openend 511 are 3~4mm, such as 3mm, 3.2mm, 3.5mm, 4mm, with
It is easy to set matching network 10 between the first capacitive element 20 and openend 511.
Pass through test, the CURRENT DISTRIBUTION on the periphery of strip crevice 51, between the midpoint of strip crevice 51 and openend 511
Current strength it is bigger than the current strength in remaining region, therefore, tuning switch 30 be preferably disposed on the midpoint of strip crevice 51 with
Between first capacitive element 20 (or distributing point), during tuning, to make the change of current strength more obvious, make low frequency
The bandwidth of frequency range is more easy to adjust.
Specifically, as shown in Fig. 2 tuning switch 30 includes inductance part, tuning switch 30 has inductance access state and opened
Line state, when tuning switch 30 is in inductance access state, first while 512 by inductance part with second while 513 opened in tuning
Close and connected at 30, now, first while 512 also by 10 and first capacitive element 20 and second of matching network while 513 in other positions
Place is put to connect；When tuning switch 30 is in open-circuit condition, the first 513 disconnection at tuning switch 30 at 512 and second, this
When, first while 512 only by the capacitive element 20 of matching network 10 and first with second while 513 connect.
Wherein, above-mentioned inductance part includes the electricity of the first inductance part and the second inductance part, the first inductance part and the second inductance part
Inductance value is different, above-mentioned inductance access state, can be realized by the first inductance part or the second inductance part.Certainly, above-mentioned inductance
Part can also be controllable impedance part, to adjust different inductance values, the inductance between making access first at 512 and second 513
The inductance value of part is different.Alternatively, the inductance value of the first inductance part is 50NH, and the inductance value of the second inductance part is 25NH, in electricity
Part is felt when being controllable impedance part, and the inductance value of controllable impedance part is 50NH, 25NH, or other values.
Alternatively, matching network 10 is LC networks, as shown in Fig. 2 matching network 10 includes the electricity of the second capacitive element the 11, the 3rd
Feel the inductance part 13 of part 12 and the 4th, the second capacitive element 11 is in parallel with the 3rd inductance part 12, circuit and the 4th inductance part after parallel connection
13 series connection, to be tuned by series-parallel LC networks, intermediate-frequency band is obtained so as to be more easy to tuning.
It is to be appreciated that matching network 10, the first capacitive element 20 are respectively positioned on tuning switch 30, strip crevice 51 is close to be opened
The side at mouth end 511, so that matching network 10, the first capacitive element 20 become apparent from tuning of the tuning switch 30 to current strength.
In the various embodiments described above, the working frequency range (i.e. low frequency band) of first antenna is 700~960M HZ, the second antenna
Working frequency range (i.e. intermediate-frequency band) be 1710~2170MHZ, the working frequency range (i.e. high-frequency band) of third antenna for 2300~
2690MHZ.Using the antenna system of above-described embodiment return loss plot as shown in figure 3, radiation efficiency figure as shown in figure 4, its
In, a plurality of curve in Fig. 3-4 is in the return loss plot formed during different conditions for tuning switch 30 and radiation efficiency is bent
Line, specifically, curve S1, curve S4 be respectively when tuning switch 30 is in open-circuit condition the return loss plot of antenna system and
Radiation efficiency curve；Curve S2, curve S5 are respectively that tuning switch 30 is in the first inductance part (inductance value 50NH) access shape
The return loss plot and radiation efficiency curve of antenna system during state；Curve S3, curve S6 are respectively that tuning switch 30 is in the
The return loss plot and radiation efficiency curve of antenna system during two inductance part (inductance value 25NH) access states.
In addition, present invention also provides a kind of mobile terminal, such as mobile phone, tablet personal computer, mobile terminal, mobile terminal bag
Include the antenna system described in as above any embodiment.
When mobile terminal uses above-mentioned antenna system, in order to reduce influence of the human hand to antenna system, strip crevice 51
The top of mobile terminal is arranged at, such as the upper right corner of mainboard 50 in Fig. 1.
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
- A kind of 1. antenna system, it is characterised in that including：Matching network,First capacitive element,Tuning switch,Systematically,Mainboard, the mainboard are provided with strip crevice, and the periphery of the strip crevice systematically electrically connects with described；The bar shaped Gap have openend, first while and when second, the openend is located at the one end of the strip crevice along its length, institute State the edge that openend is communicated to the mainboard；First side is with second edge perpendicular to the direction of the length direction Relatively, and the both ends of the matching network, first capacitive element and the tuning switch are connected to first side With second side, first capacitive element is between the matching network and the tuning switch, to carry out capacitive feed.
- 2. antenna system according to claim 1, it is characterised in that first capacitive element and the openend are along described The distance of length direction is 3~4mm.
- 3. antenna system according to claim 1, it is characterised in that the tuning switch is located in the strip crevice Between point and first capacitive element.
- 4. antenna system according to claim 1, it is characterised in that the tuning switch includes inductance part, the tuning Switch has inductance access state and open-circuit condition,When the tuning switch is in inductance access state, described first while by the inductance part with described second while in institute State and connected at tuning switch；When the tuning switch is in open-circuit condition, described first disconnects while with described second at the tuning switch.
- 5. antenna system according to claim 4, it is characterised in that the inductance part includes the first inductance part and the second electricity Feel part, or the inductance part is controllable impedance part.
- 6. according to the antenna system described in claim any one of 1-5, it is characterised in that the matching network includes the second electric capacity Part, the 3rd inductance part and the 4th inductance part, second capacitive element is in parallel with the 3rd inductance part, circuit and institute after parallel connection State the series connection of the 4th inductance part.
- 7. according to the antenna system described in claim any one of 1-5, it is characterised in that the length of the strip crevice be 40~ 45mm。
- 8. according to the antenna system described in claim any one of 1-5, it is characterised in that the width of the strip crevice be 2~ 3mm。
- 9. a kind of mobile terminal, it is characterised in that including the antenna system as described in claim any one of 1-8.
- 10. mobile terminal according to claim 9, it is characterised in that the strip crevice on the mainboard of the antenna system It is arranged at the top of the mobile terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710725274.0A CN107359419A (en) | 2017-08-22 | 2017-08-22 | Antenna system and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710725274.0A CN107359419A (en) | 2017-08-22 | 2017-08-22 | Antenna system and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107359419A true CN107359419A (en) | 2017-11-17 |
Family
ID=60288826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710725274.0A Pending CN107359419A (en) | 2017-08-22 | 2017-08-22 | Antenna system and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107359419A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108288763A (en) * | 2018-01-03 | 2018-07-17 | 上海传英信息技术有限公司 | Mobile terminal and its antenna installation method |
| CN111710964A (en) * | 2020-06-29 | 2020-09-25 | 上海创功通讯技术有限公司 | Antenna |
| CN111937232A (en) * | 2018-02-22 | 2020-11-13 | 马萨诸塞大学 | Antenna hardware and control |
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| CN101714698A (en) * | 2008-09-05 | 2010-05-26 | 索尼爱立信移动通信股份公司 | Notch antenna and wireless device |
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