CN108321542A - The communication terminal of antenna system and the application antenna system - Google Patents
The communication terminal of antenna system and the application antenna system Download PDFInfo
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- CN108321542A CN108321542A CN201810002362.2A CN201810002362A CN108321542A CN 108321542 A CN108321542 A CN 108321542A CN 201810002362 A CN201810002362 A CN 201810002362A CN 108321542 A CN108321542 A CN 108321542A
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Abstract
A kind of antenna system, including radiator, the first feed side and the first match circuit, first feed side is electrically connected by first match circuit and the radiator, first feed side is for receiving the first FD feed, the antenna system works near field communication mode under the action of first FD feed, first match circuit is used to offset original induction reactance of the antenna system when the antenna system works near field communication mode, and increases the resistance of the antenna system.The antenna system can realize that far-field communication antenna and near-field communication aerial share.The present invention also provides a kind of communication terminals.
Description
Technical field
The present invention relates to wireless communication field more particularly to a kind of antenna system and a kind of communications of the application antenna system
Terminal.
Background technology
Near-field communication (Near Field Communication, NFC) technology is a kind of short-range wireless communication technique,
Allow to carry out contactless Point-to-Point Data Transmission between electronic equipment to exchange data, can be applied to mobile payment, electronic bill,
The fields such as access control and attendance.Currently, NFC has been increasingly becoming the necessary functions of the communication terminals such as mobile phone, tablet computer.NFC function
It realizes and be unable to do without Antenna Design, space is larger needed for existing NFC antenna, and in order to avoid interference, it is also necessary to outfit and NFC
Antenna area is comparable and expensive ferrite, can undoubtedly increase being produced into for the communication terminals such as mobile phone, tablet computer
This.Meanwhile with the communication terminals such as universal and mobile phone, the tablet computer of fourth generation mobile communication technology functionally more
Sampleization develops and the lightening development in appearance and size, antenna of the mobile communication field to communication terminal small size, wide bandwidth
The design requirement of system is more and more urgent, how to design in a limited space radiation characteristic it is excellent include far-field communication day
Antenna system including line and NFC antenna, the technical issues of becoming wireless communication field current urgent need to resolve.
Invention content
The present invention provides a kind of antenna system, by increasing match circuit in existing far-field communication antenna system come real
Sharing for existing far-field communication antenna and NFC antenna, without designing individual NFC antenna, can effectively control the antenna system
Overall dimensions and complexity, and reduce production cost.
In addition, the present invention also provides a kind of communication terminals of the application antenna system.
A kind of antenna system, for transmitting and receiving wireless communication signals, wherein the antenna system include radiator,
First feed side and the first match circuit, first feed side are electrical by first match circuit and the radiator
Connection, first feed side is for receiving the first FD feed, effect of the antenna system in first FD feed
Under work near field communication mode, first match circuit when the antenna system works near field communication mode for supporting
The original induction reactance for the antenna system that disappears, and increase the resistance of the antenna system.
Wherein, the antenna system further includes the second feed side and the second match circuit, second feed side and institute
The setting of the first feed side interval is stated, second feed side is for receiving the second FD feed, and the antenna system is described the
Far-field communication pattern is worked under the action of two FD feeds.
Wherein, first match circuit is additionally operable to when the antenna system works in far-field communication pattern described in realization
Second FD feed and first FD feed and the first FD feed reference ground are isolated.
Wherein, second match circuit is for realizing the day when the antenna system works in far-field communication pattern
The impedance matching of linear system system.
Wherein, the antenna system further includes ground terminal and third match circuit, and the ground terminal is presented with described first
Enter end, the second feed side is spaced setting, the ground terminal passes through the third match circuit and radiator electric connection.
Wherein, the third match circuit is for making the antenna when the antenna system works near field communication mode
System resonance is in the working frequency of near-field communication.
Wherein, first match circuit includes the first inductance, the first capacitance and the first reference ground, first inductance one
End is electrically connected with the radiator, and the other end is electrically connected with one end of first capacitance and first feed side,
The other end of first capacitance is connect with first reference ground.
Wherein, first match circuit includes the second inductance, third inductance, the second capacitance and the second reference ground, described
Second inductance one end is electrically connected with the radiator, one end and second capacitance of the other end and the third inductance
One end is electrically connected, and the other end of the third inductance and first feed side are electrically connected, second capacitance it is another
End is electrically connected with second reference ground.
Wherein, first match circuit includes third capacitance, the 4th inductance, the 5th inductance and third reference ground, described
Third capacitance one end is electrically connected with the radiator, one end and the 5th inductance of the other end and the 4th inductance
One end is electrically connected, and the other end of the 4th inductance is electrically connected with first feed side, the 5th inductance it is another
End is electrically connected with the third reference ground.
Wherein, first match circuit includes the 4th capacitance, the 6th inductance and the 4th reference ground, the 6th inductance packet
The first connecting pin, second connection end and third connecting pin are included, described 4th capacitance one end is electrically connected with the radiator, another
End is electrically connected with first connecting pin, and the second connection end is electrically connected with first feed side, and the third connects
End is connect to be electrically connected with the 4th reference ground.
Wherein, the third match circuit includes the 7th inductance and the 5th capacitance, described 7th inductance one end and the spoke
Beam is electrically connected, and one end of the other end and the 5th capacitance is electrically connected, and the other end of the 5th capacitance connects with described
Ground terminal is electrically connected.
The first signal source is arranged on the substrate, wherein the communication terminal also wraps in a kind of communication terminal, including substrate
Antenna system is included, the antenna system includes radiator, the first feed side and the first match circuit, and first feed side is logical
It crosses first match circuit to be electrically connected with the radiator, first signal source electrically connects with first feed side
It connects, for providing the first FD feed for the antenna system, the antenna system is under the action of first FD feed
Near field communication mode is worked in, first match circuit when the antenna system works near field communication mode for offsetting
Original induction reactance of the antenna system, and increase the resistance of the antenna system.
Wherein, second signal source is also set up on the substrate；The antenna system further includes the second feed side and second
Match circuit, second feed side and the setting of first feed side interval, the second signal source and second feed-in
End is electrically connected, and for providing the second FD feed for the antenna system, the antenna system is in second FD feed
Under the action of work in far-field communication pattern.
Wherein, first match circuit is additionally operable to when the antenna system works in far-field communication pattern described in realization
Second FD feed and first FD feed and the first FD feed reference ground are isolated.
Wherein, second match circuit is for realizing the day when the antenna system works in far-field communication pattern
The impedance matching of linear system system.
Wherein, system ground is also set up on the substrate；The antenna system further includes ground terminal and third matching
Circuit, the ground terminal are spaced setting, the system ground and the ground connection with first feed side, the second feed side
End is electrically connected, for providing ground connection for the antenna system, the ground terminal also by the third match circuit with it is described
Radiator is electrically connected.
Wherein, the third match circuit is for making the antenna when the antenna system works near field communication mode
System resonance is in the working frequency of near-field communication.Wherein, first match circuit includes the first inductance, the first capacitance and first
Reference ground, first inductance one end are electrically connected with the radiator, the one end and institute of the other end with first capacitance
The electric connection of the first feed side is stated, the other end of first capacitance is connect with first reference ground.
Wherein, first match circuit includes the second inductance, third inductance, the second capacitance and the second reference ground, described
Second inductance one end is electrically connected with the radiator, one end and second capacitance of the other end and the third inductance
One end is electrically connected, and the other end of the third inductance and first feed side are electrically connected, second capacitance it is another
End is electrically connected with second reference ground.
Wherein, first match circuit includes third capacitance, the 4th inductance, the 5th inductance and third reference ground, described
Third capacitance one end is electrically connected with the radiator, one end and the 5th inductance of the other end and the 4th inductance
One end is electrically connected, and the other end of the 4th inductance is electrically connected with first feed side, the 5th inductance it is another
End is electrically connected with the third reference ground.
Wherein, first match circuit includes the 4th capacitance, the 6th inductance and the 4th reference ground, the 6th inductance packet
The first connecting pin, second connection end and third connecting pin are included, described 4th capacitance one end is electrically connected with the radiator, another
End is electrically connected with first connecting pin, and the second connection end is electrically connected with first feed side, and the third connects
End is connect to be electrically connected with the 4th reference ground.
Wherein, the third match circuit includes the 7th inductance and the 5th capacitance, described 7th inductance one end and the spoke
Beam is electrically connected, and one end of the other end and the 5th capacitance is electrically connected, and the other end of the 5th capacitance connects with described
Ground terminal is electrically connected.
Antenna system of the present invention by increasing by first match circuit in existing far-field communication antenna system,
And the first FD feed is received by first feed side, so that effect of the antenna system in first FD feed
Under work near field communication mode, without designing individual NFC antenna, can effectively control the whole of the antenna system and communication terminal
Body size and complexity, and reduce production cost.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of the antenna system of first embodiment of the invention.
Fig. 2 is the structural schematic diagram of the first match circuit of antenna system shown in Fig. 1.
Fig. 3 A- Fig. 3 C are other optional structure diagrams of the first match circuit of antenna system shown in Fig. 1.
Fig. 4 is the structural schematic diagram of the third match circuit of antenna system shown in Fig. 1.
Fig. 5 is the structural schematic diagram of the communication terminal of second embodiment of the invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, first embodiment of the invention provides a kind of antenna system 100, it is applied to mobile phone, tablet computer etc.
In communication terminal, radio wave is to transmit, exchange wireless communication signals for transmitting and receiving.
The antenna system 100 includes radiator 10, the first feed side 20, the second feed side 30, ground terminal 40, first
With circuit 50, the second match circuit 60 and third match circuit 70.First feed side 20, the second feed side 30 and ground terminal
40 interval settings, the radiator 10 are set to 40 side of first feed side 20, the second feed side 30 and ground terminal.It is described
First feed side 20 is electrically connected by first match circuit 50 and the radiator 10.Second feed side 30 passes through
Second match circuit 60 is electrically connected with the radiator 10.The ground terminal 40 by the third match circuit 70 with
The radiator 10 is electrically connected.First feed side 20 is for receiving the first FD feed, and the antenna system 100 is in institute
It states and works near field communication mode under the action of the first FD feed, second feed side 30 is for receiving the second feed-in letter
Number, the antenna system 100 works in far-field communication pattern under the action of second FD feed.
It is appreciated that first FD feed and second FD feed are carried by mutually independent signal source respectively
For.For example, first FD feed can be provided by the near-field communication transmission circuit of the communication terminal；Second feed-in
Signal can be provided by the far-field communication transmission circuit of the communication terminal.
It is appreciated that when the antenna system 100 works near field communication mode, the antenna system 100 is as close
Field communication antenna uses, for receiving and dispatching near-field communication data, such as mobile payment data, access control and attendance data etc., the radiation
Body 10 is the part for constituting the near-field communication aerial；It is described when the antenna system 100 works in far-field communication pattern
Antenna system 100 is used as far-field communication antenna, and for receiving and dispatching far-field communication data, such as voice communication data, video lead to
Letter data etc., the radiator 10 are the part for constituting the far-field communication antenna.
First match circuit 50 is for offsetting the day when the antenna system 100 works near field communication mode
Original induction reactance of linear system system 100, and increase the resistance of the antenna system 100；And for working in the antenna system 100
Second FD feed and first FD feed and the first FD feed reference ground are realized when far-field communication pattern
Isolation.Second match circuit 60 is for realizing the antenna when the antenna system 100 works in far-field communication pattern
The impedance matching of system 100.The third match circuit 70 is used for when the antenna system 100 works near field communication mode
Make 100 resonance of the antenna system in the working frequency of near-field communication.
Referring to Fig. 2, in an alternative embodiment, first match circuit 50 includes the first inductance L1, the first capacitance C1
With the first reference ground GND1, described one end first inductance L1 is electrically connected with the radiator 10, the other end and first electricity
The one end and first feed side 20 for holding C1 are electrically connected, the other end and first reference ground of the first capacitance C1
GND1 connections.
Fig. 3 A are please referred to, in an alternative embodiment, first match circuit 50 includes the second inductance L2, third inductance
L3, the second capacitance C2 and the second reference ground GND2, described one end second inductance L2 are electrically connected with the radiator 10, the other end
It is electrically connected with one end of the third inductance L3 and one end of the second capacitance C2, the other end of the third inductance L3
It is electrically connected with first feed side 20, the other end of the second capacitance C2 electrically connects with the second reference ground GND2
It connects.
Fig. 3 B are please referred to, in an alternative embodiment, first match circuit 50 includes third capacitance C3, the 4th inductance
L4, the 5th inductance L5 and third reference ground GND3, described one end third capacitance C3 are electrically connected with the radiator 10, the other end
It is electrically connected with one end of the 4th inductance L4 and one end of the 5th inductance L5, the other end of the 4th inductance C4
It is electrically connected with first feed side 20, the other end of the 5th inductance L5 electrically connects with the third reference ground GND3
It connects.
Fig. 3 C are please referred to, in an alternative embodiment, first match circuit 50 includes the 4th capacitance C4, the 6th inductance L6
Include the first connecting pin P1, second connection end P2 and third connecting pin P3, institute with the 4th reference ground GND4, the 6th inductance L6
It states the 4th one end capacitance C4 to be electrically connected with the radiator 10, the other end is electrically connected with the first connecting pin P1, described
Second connection end P2 is electrically connected with first feed side 20, the third connecting pin P3 and the 4th reference ground GND4 electricity
Property connection.
In an alternative embodiment, second match circuit 60 is related with the concrete structure form of the radiator 10.Its
In, the radiator 10 can be unipole antenna form, inverse-F antenna (Inverted-F Antenna, IFA) form, cyclic annular day
One or more combinations in line morphology, slot antenna form.Second match circuit 60 can be by capacitance, inductance,
The passive devices such as resistance are parallel with one another or/and the circuit structure that is composed in series.
Referring to Fig. 4, in an alternative embodiment, the third match circuit 70 includes the 7th inductance L7 and the 5th capacitance
C5, described 7th one end inductance L7 are electrically connected with the radiator 10, and one end of the other end and the 5th capacitance C5 is electrical
Connection, the other end and the ground terminal 40 of the 5th capacitance C5 are electrically connected.It is appreciated that the third match circuit 70
It can also be by inductance, capacitance is parallel with one another or/and other circuit structures for being composed in series, wherein the third match circuit
70 should include at least an inductance.
Referring to Fig. 5, second embodiment of the invention provides a kind of communication terminal 200, including substrate 210 and antenna system
100.First signal source 211, second signal source 212 and system ground 213 are set on the substrate 210.The substrate 210 can
Think the system circuit board of the communication terminal 200.The communication terminal 200 can be that smart mobile phone, tablet computer etc. are mobile
Communication terminal.First signal source 211 is used to provide the first FD feed, the second signal for the antenna system 100
Source 212 is used to provide the second FD feed for the antenna system 100, and the ground plane 213 is used to be the antenna system 100
Ground connection is provided.
The antenna system 100 includes radiator 10, the first feed side 20, the second feed side 30, ground terminal 40, first
With circuit 50, the second match circuit 60 and third match circuit 70.First feed side 20, the second feed side 30 and ground terminal
40 interval settings, the radiator 10 are set to 40 side of first feed side 20, the second feed side 30 and ground terminal.It is described
First feed side 20 is electrically connected by first match circuit 50 and the radiator 10.Second feed side 30 passes through
Second match circuit 60 is electrically connected with the radiator 10.The ground terminal 40 by the third match circuit 70 with
The radiator 10 is electrically connected.First signal source 211 is electrically connected with first feed side 20, first feed-in
For receiving first FD feed, the antenna system 100 works under the action of first FD feed at end 20
Near field communication mode；The second signal source 212 is electrically connected with second feed side 30, and second feed side 30 is used for
Second FD feed is received, the antenna system 100 works in far-field communication under the action of second FD feed
Pattern.
It is appreciated that when the antenna system 100 works near field communication mode, the antenna system 100 is as close
Field communication antenna uses, for receiving and dispatching near-field communication data, such as mobile payment data, access control and attendance data etc., the radiation
Body 10 is the part for constituting the near-field communication aerial；It is described when the antenna system 100 works in far-field communication pattern
Antenna system 100 is used as far-field communication antenna, and for receiving and dispatching far-field communication data, such as voice communication data, video lead to
Letter data etc., the radiator 10 are the part for constituting the far-field communication antenna.
First match circuit 50 is for offsetting the day when the antenna system 100 works near field communication mode
Original induction reactance of linear system system 100, and increase the resistance of the antenna system 100；And for working in the antenna system 100
Second FD feed and first FD feed and the first FD feed reference ground are realized when far-field communication pattern
Isolation.Second match circuit 60 is for realizing the antenna when the antenna system 100 works in far-field communication pattern
The impedance matching of system 100.The third match circuit 70 is used for when the antenna system 100 works near field communication mode
Make 100 resonance of the antenna system in the working frequency of near-field communication.
Referring to Fig. 2, in an alternative embodiment, first match circuit 50 includes the first inductance L1, the first capacitance C1
With the first reference ground GND1, described one end first inductance L1 is electrically connected with the radiator 10, the other end and first electricity
The one end and first feed side 20 for holding C1 are electrically connected, the other end and first reference ground of the first capacitance C1
GND1 connections.
Fig. 3 A are please referred to, in an alternative embodiment, first match circuit 50 includes the second inductance L2, third inductance
L3, the second capacitance C2 and the second reference ground GND2, described one end second inductance L2 are electrically connected with the radiator 10, the other end
It is electrically connected with one end of the third inductance L3 and one end of the second capacitance C2, the other end of the third inductance L3
It is electrically connected with first feed side 20, the other end of the second capacitance C2 electrically connects with the second reference ground GND2
It connects.
Fig. 3 B are please referred to, in an alternative embodiment, first match circuit 50 includes third capacitance C3, the 4th inductance
L4, the 5th inductance L5 and third reference ground GND3, described one end third capacitance C3 are electrically connected with the radiator 10, the other end
It is electrically connected with one end of the 4th inductance L4 and one end of the 5th inductance L5, the other end of the 4th inductance C4
It is electrically connected with first feed side 20, the other end of the 5th inductance L5 electrically connects with the third reference ground GND3
It connects.
Fig. 3 C are please referred to, in an alternative embodiment, first match circuit 50 includes the 4th capacitance C4, the 6th inductance L6
Include the first connecting pin P1, second connection end P2 and third connecting pin P3, institute with the 4th reference ground GND4, the 6th inductance L6
It states the 4th one end capacitance C4 to be electrically connected with the radiator 10, the other end is electrically connected with the first connecting pin P1, described
Second connection end P2 is electrically connected with first feed side 20, the third connecting pin P3 and the 4th reference ground GND4 electricity
Property connection.
In an alternative embodiment, second match circuit 60 is related with the concrete structure form of the radiator 10.Its
In, the radiator 10 can be unipole antenna form, inverse-F antenna (Inverted-F Antenna, IFA) form, cyclic annular day
One or more combinations in line morphology, slot antenna form.Second match circuit 60 can be by capacitance, inductance,
The passive devices such as resistance are parallel with one another or/and the circuit structure that is composed in series.
Referring to Fig. 4, in an alternative embodiment, the third match circuit 70 includes the 7th inductance L7 and the 5th capacitance
C5, described 7th one end inductance L7 are electrically connected with the radiator 10, and one end of the other end and the 5th capacitance C5 is electrical
Connection, the other end and the ground terminal 40 of the 5th capacitance C5 are electrically connected.It is appreciated that the third match circuit 70
It can also be by inductance, capacitance is parallel with one another or/and other circuit structures for being composed in series, wherein the third match circuit
70 should include at least an inductance.
It is appreciated that the communication terminal 200 can be the terminal for having metal edge frame or/and metal back shell structure, and
And the part of a part for the metal edge frame or/and a part for metal dorsal shield as the radiator 10.By to institute
State the first FD feed described in 10 independent feed-in of radiator, and in conjunction with first match circuit 50 and third match circuit 70,
The antenna system 100 is set to work near field communication mode；Or to the second FD feed described in 10 independent feed-in of the radiator,
And in conjunction with second match circuit 60, the antenna system 100 is made to work in far-field communication pattern.It is therefore not necessary to change institute
The antenna system 100 can be realized between the near field communication mode and far-field communication pattern in the structure for stating radiator 10
Switching.
Antenna system 100 of the present invention in existing far-field communication antenna system by increasing the first matching electricity
Road 50, the second match circuit 60 and third match circuit 70, and the first FD feed is received by first feed side 20, with
So that the antenna system 100 is worked near field communication mode under the action of first FD feed, is presented by described second
Enter end 30 and receive the second FD feed, so that the antenna system 100 works in far under the action of second FD feed
Communication pattern, without designing individual NFC antenna, can be controlled effectively to realize sharing for far-field communication antenna and NFC antenna
The overall dimensions and complexity of the antenna system 100 and communication terminal 200 are made, and reduce production cost.
Above disclosed is only presently preferred embodiments of the present invention, cannot limit the right of the present invention with this certainly
Range, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and according to right of the present invention
Equivalent variations made by it is required that, still belong to the scope covered by the invention.
Claims (22)
1. a kind of antenna system, wireless communication signals for transmitting and receiving, which is characterized in that the antenna system includes radiation
Body, the first feed side and the first match circuit, first feed side pass through first match circuit and the radiator
It is electrically connected, first feed side is for receiving the first FD feed, and the antenna system is in first FD feed
Near field communication mode is worked under effect, first match circuit is used to work near field communication mode in the antenna system
When offset original induction reactance of the antenna system, and increase the resistance of the antenna system.
2. antenna system as described in claim 1, which is characterized in that the antenna system further includes the second feed side and
Two match circuits, second feed side and the setting of first feed side interval, second feed side is for receiving second
FD feed, the antenna system work in far-field communication pattern under the action of second FD feed.
3. antenna system as claimed in claim 2, which is characterized in that first match circuit is additionally operable in the aerial system
System realizes that second FD feed is joined with first FD feed and the first FD feed when working in far-field communication pattern
Examine the isolation on ground.
4. antenna system as claimed in claim 2, which is characterized in that second match circuit is used in the antenna system
The impedance matching of the antenna system is realized when working in far-field communication pattern.
5. antenna system as claimed in claim 2, which is characterized in that the antenna system further includes ground terminal and third
With circuit, the ground terminal is spaced setting with first feed side, the second feed side, and the ground terminal passes through the third
Match circuit is electrically connected with the radiator.
6. antenna system as claimed in claim 5, which is characterized in that the third match circuit is used in the antenna system
Make the antenna system resonance in the working frequency of near-field communication when working near field communication mode.
7. antenna system as claimed in any one of claims 1 to 6, which is characterized in that first match circuit includes the first electricity
Sense, the first capacitance and the first reference ground, first inductance one end are electrically connected with the radiator, the other end and described first
One end of capacitance and first feed side are electrically connected, and the other end of first capacitance connects with first reference ground
It connects.
8. antenna system as claimed in any one of claims 1 to 6, which is characterized in that first match circuit includes the second electricity
Sense, third inductance, the second capacitance and the second reference ground, second inductance one end are electrically connected with the radiator, the other end
Be electrically connected with one end of the third inductance and one end of second capacitance, the other end of the third inductance with it is described
First feed side is electrically connected, and the other end of second capacitance is electrically connected with second reference ground.
9. antenna system as claimed in any one of claims 1 to 6, which is characterized in that first match circuit includes third electricity
Appearance, the 4th inductance, the 5th inductance and third reference ground, third capacitance one end are electrically connected with the radiator, the other end
Be electrically connected with one end of the 4th inductance and one end of the 5th inductance, the other end of the 4th inductance with it is described
First feed side is electrically connected, and the other end and the third reference ground of the 5th inductance are electrically connected.
10. antenna system as claimed in any one of claims 1 to 6, which is characterized in that first match circuit includes the 4th
Capacitance, the 6th inductance and the 4th reference ground, the 6th inductance include the first connecting pin, second connection end and third connecting pin,
Described 4th capacitance one end is electrically connected with the radiator, and the other end is electrically connected with first connecting pin, and described second
Connecting pin is electrically connected with first feed side, and the third connecting pin is electrically connected with the 4th reference ground.
11. antenna system as claimed in claim 5, which is characterized in that the third match circuit includes the 7th inductance and the
Five capacitances, described 7th inductance one end are electrically connected with the radiator, and one end of the other end and the 5th capacitance electrically connects
It connects, the other end and the ground terminal of the 5th capacitance are electrically connected.
12. a kind of communication terminal, including substrate, the first signal source is set on the substrate, which is characterized in that the communication terminal
Further include antenna system, the antenna system includes radiator, the first feed side and the first match circuit, first feed-in
End is electrically connected by first match circuit and the radiator, and first signal source and first feed side are electrical
Connection, for providing the first FD feed, effect of the antenna system in first FD feed for the antenna system
Under work near field communication mode, first match circuit when the antenna system works near field communication mode for supporting
The original induction reactance for the antenna system that disappears, and increase the resistance of the antenna system.
13. communication terminal as claimed in claim 12, which is characterized in that also set up second signal source on the substrate；It is described
Antenna system further includes the second feed side and the second match circuit, and second feed side and first feed side interval are set
It sets, the second signal source is electrically connected with second feed side, for providing the second FD feed for the antenna system,
The antenna system works in far-field communication pattern under the action of second FD feed.
14. communication terminal as claimed in claim 13, which is characterized in that first match circuit is additionally operable in the antenna
System realizes second FD feed and first FD feed and the first FD feed when working in far-field communication pattern
The isolation of reference ground.
15. communication terminal as claimed in claim 13, which is characterized in that second match circuit is used in the aerial system
System realizes the impedance matching of the antenna system when working in far-field communication pattern.
16. communication terminal as claimed in claim 2, which is characterized in that also set up system ground on the substrate；The day
Linear system system further includes ground terminal and third match circuit, between the ground terminal and first feed side, the second feed side are equal
Every setting, the system ground is electrically connected with the ground terminal, for providing ground connection, the ground connection for the antenna system
End is also electrically connected by the third match circuit and the radiator.
17. communication terminal as claimed in claim 16, which is characterized in that the third match circuit is used in the aerial system
System makes the antenna system resonance in the working frequency of near-field communication when working near field communication mode.
18. such as claim 12-17 any one of them communication terminals, which is characterized in that first match circuit includes the
One inductance, the first capacitance and the first reference ground, first inductance one end and the radiator are electrically connected, the other end with it is described
One end of first capacitance and first feed side are electrically connected, the other end of first capacitance and first reference ground
Connection.
19. such as claim 12-17 any one of them communication terminals, which is characterized in that first match circuit includes the
Two inductance, third inductance, the second capacitance and the second reference ground, second inductance one end are electrically connected with the radiator, separately
One end of one end and the third inductance and one end of second capacitance are electrically connected, the other end of the third inductance with
First feed side is electrically connected, and the other end of second capacitance is electrically connected with second reference ground.
20. such as claim 12-17 any one of them communication terminals, which is characterized in that first match circuit includes the
Three capacitances, the 4th inductance, the 5th inductance and third reference ground, third capacitance one end are electrically connected with the radiator, separately
One end of one end and the 4th inductance and one end of the 5th inductance are electrically connected, the other end of the 4th inductance with
First feed side is electrically connected, and the other end and the third reference ground of the 5th inductance are electrically connected.
21. such as claim 12-17 any one of them communication terminals, which is characterized in that first match circuit includes the
Four capacitances, the 6th inductance and the 4th reference ground, the 6th inductance are connected including the first connecting pin, second connection end with third
End, described 4th capacitance one end and the radiator are electrically connected, and the other end is electrically connected with first connecting pin, and described the
Two connecting pins are electrically connected with first feed side, and the third connecting pin is electrically connected with the 4th reference ground.
22. communication terminal as claimed in claim 16, which is characterized in that the third match circuit includes the 7th inductance and the
Five capacitances, described 7th inductance one end are electrically connected with the radiator, and one end of the other end and the 5th capacitance electrically connects
It connects, the other end and the ground terminal of the 5th capacitance are electrically connected.
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| CN201810002362.2A CN108321542B (en) | 2015-06-12 | 2015-06-12 | Antenna system and communication terminal applying same |
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| CN201510325327.0A CN104953289B (en) | 2015-06-12 | 2015-06-12 | The communication terminal of antenna system and the application antenna system |
| CN201810002362.2A CN108321542B (en) | 2015-06-12 | 2015-06-12 | Antenna system and communication terminal applying same |
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Also Published As
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| CN104953289A (en) | 2015-09-30 |
| CN104953289B (en) | 2018-01-19 |
| CN108321542B (en) | 2020-08-21 |
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