CN110504524A - NFC antenna and NFC communication device for mobile terminal - Google Patents
NFC antenna and NFC communication device for mobile terminal Download PDFInfo
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- CN110504524A CN110504524A CN201910833232.8A CN201910833232A CN110504524A CN 110504524 A CN110504524 A CN 110504524A CN 201910833232 A CN201910833232 A CN 201910833232A CN 110504524 A CN110504524 A CN 110504524A
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- 238000004891 communication Methods 0.000 title claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 19
- 230000006870 function Effects 0.000 description 22
- 238000000034 method Methods 0.000 description 22
- 239000002184 metal Substances 0.000 description 15
- 229910052751 metal Inorganic materials 0.000 description 15
- 238000010586 diagram Methods 0.000 description 13
- 238000011160 research Methods 0.000 description 10
- 238000012938 design process Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
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- 244000062793 Sorghum vulgare Species 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 235000019713 millet Nutrition 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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- 229910002804 graphite Inorganic materials 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
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- 210000003733 optic disk Anatomy 0.000 description 1
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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
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- 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
- H01Q1/526—Electromagnetic shields
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Telephone Set Structure (AREA)
Abstract
This application discloses a kind of NFC antennas for mobile terminal and NFC communication device, wherein NFC antenna includes: substrate；Ferrite on substrate is set；The first flexible circuit board FPC antenna on ferrite is set, wherein the first FPC antenna includes first end point and the second endpoint.The NFC antenna is radiated by using a FPC antenna, can effectively reduce the area occupied of NFC antenna, while in the mobile terminal antenna environment to become increasingly complex, with strong applicability.
Description
Technical field
This application involves field of terminal technology, in particular to a kind of NFC antenna and NFC communication for mobile terminal fills
It sets.
Background technique
Currently, near-field communication (Near Field Communication, abbreviation NFC) technology is in mobile terminal (such as hand
Machine, wearable device etc.) it is constantly universal, promote major mobile Internet company actively to research and develop NFC application, pushes NFC technique
It continues to develop.It mainly include the application of following several respects in NFC application field: mobile payment aspect, public transport aspect, body
In terms of part identification aspect and intelligence communication.
In order to meet user to the various demands of NFC, while adapting to the complete machine environment that mobile terminal becomes increasingly complex, NFC
The form of antenna constantly changes, and common are following two NFC antenna: NFC coil antenna and NFC diversity antenna.
However, NFC coil antenna is single layer coil, harsh, and present mobile terminal needs are required to the size of coil
5G antenna is added, it is difficult to ensure that the required area of NFC coil antenna；NFC diversity antenna shares metal with mobile terminal primary antenna
Frame not only needs metal edge frame, but also will affect the performance of primary antenna, makes its power decline 1.5dB or so, also, in order to
Reduce influencing each other between primary antenna and NFC diversity antenna, needs to add a big inductance in shared feed end, be unfavorable for device
Part layout.
Summary of the invention
The application is intended to solve at least some of the technical problems in related technologies.
For this purpose, the application proposes a kind of NFC antenna for mobile terminal and NFC communication device, effectively reduced with realizing
The area occupied of NFC antenna reduces the influence to primary antenna performance.
The application first aspect embodiment proposes a kind of NFC antenna for mobile terminal, comprising:
Substrate；
Ferrite on the substrate is set；
The first FPC antenna on the ferrite is set, wherein first FPC antenna include first end point and
Second endpoint.
As the first possible implementation of the application first aspect embodiment, the first end point is feed end,
Second endpoint is grounding point.
As second of possible implementation of the application first aspect embodiment, the length of first FPC antenna
Greater than the ferritic length, so that the first end point and second endpoint are hanging relative to the substrate.
As the third possible implementation of the application first aspect embodiment, the NFC antenna further include:
Second FPC antenna, second FPC antenna include third endpoint and the 4th endpoint.
As the 4th kind of possible implementation of the application first aspect embodiment, second endpoint and the described 4th
Endpoint is connected.
As the 5th kind of possible implementation of the application first aspect embodiment, the first end point and the third
Endpoint is corresponding, and second endpoint is corresponding with the 4th endpoint.
As the 6th kind of possible implementation of the application first aspect embodiment, first FPC antenna with it is described
The underlapped setting of second FPC antenna.
As the 7th kind of possible implementation of the application first aspect embodiment, second FPC antenna is located at institute
It states between substrate and the ferrite.
As the 8th kind of possible implementation of the application first aspect embodiment, second FPC antenna and described
First FPC antenna is located at the two sides of substrate.
The NFC antenna for mobile terminal of the embodiment of the present application is radiated by using a FPC antenna, can be with
The area occupied of NFC antenna is effectively reduced, while in the mobile terminal antenna environment to become increasingly complex, it is with strong applicability.And
And radiated using individual FPC antenna, do not shared with primary antenna, it in the design process, can be by avoiding a spacing
From the influence to primary antenna performance is reduced, further, it is also possible to avoid being conducive to device layout using big inductance.
The application second aspect embodiment proposes a kind of NFC communication device of mobile terminal, comprising:
The NFC antenna for mobile terminal that the application first aspect embodiment proposes；
The matching network being connected with the NFC antenna；
The NFC chip being connected with the matching network.
The NFC communication device of the mobile terminal of the embodiment of the present application is radiated by using a FPC antenna, can be with
The area occupied of NFC antenna is effectively reduced, while in the mobile terminal antenna environment to become increasingly complex, it is with strong applicability.And
And radiated using individual FPC antenna, do not shared with primary antenna, it in the design process, can be by avoiding a spacing
From the influence to primary antenna performance is reduced, further, it is also possible to avoid being conducive to device layout using big inductance.
The additional aspect of the application and advantage will be set forth in part in the description, and will partially become from the following description
It obtains obviously, or recognized by the practice of the application.
Detailed description of the invention
The application is above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram provided by the embodiment of the present application one for the NFC antenna of mobile terminal；
Fig. 2 is the top view illustration of NFC antenna in the embodiment of the present application；
Fig. 3 is the magnetic field schematic diagram that NFC antenna generates in the embodiment of the present application；
Fig. 4 is the structural schematic diagram provided by the embodiment of the present application two for the NFC antenna of mobile terminal；
Fig. 5 is the side view schematic diagram one of NFC antenna in the embodiment of the present application；
Fig. 6 is the side view schematic diagram two of NFC antenna in the embodiment of the present application；
Fig. 7 is the structural schematic diagram provided by the embodiment of the present application three for the NFC communication device of mobile terminal；
Fig. 8 is the structural schematic diagram of NFC communication device provided by the embodiment of the present application four；
Fig. 9 is the structural schematic diagram of NFC communication device provided by the embodiment of the present application five.
Specific embodiment
Embodiments herein is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the application, and should not be understood as the limitation to the application.
In recent years, the research of NFC technique is mainly distributed in four fields, the theory including NFC and development, the basis NFC
Research, NFC application and service research, NFC application environment research etc..NFC operating mode mainly includes three kinds: reader/writer mode,
Card mold simulation models and ad hoc mode.
Document " NFC Research Framework:A Literature Review And Future Research
Directions " it has counted article about NFC technique and delivers feelings in major periodical and meeting in 2006 to 2010
Condition, wherein statistical result showed: in four research fields, maximum accounting is NFC application and service field, is reached
40.54%, and model study is at most reader read-write mode, reaches 51.35%.The result shows that being ground at present in NFC technique
Study carefully in field, the research of NFC application is in main trend, there is more wide application prospect.
The extensive use of NFC technique be unable to do without the rapid development of the current mobile terminal with NFC function.Currently, having
The mobile terminal of NFC function, such as smart phone are continuously increased in occupation rate of market, and the smart phone of statistics in 2017 always goes out
In goods amount, the accounting for having the mobile phone of NFC function is more than sixty percent.As NFC technique is in the continuous universal of mobile terminal, promote each
Big mobile Internet company actively researches and develops NFC application, to push the development of NFC technique.Currently, in NFC application field, it is main
The application of stream mainly has following several respects:
In terms of mobile payment, NFC starts late at home, and in countries such as Japan and Korea S, NFC technique is occupied in mobile payment
Great market.China also releases a series of policies in recent years and encourages NFC technique in the application of mobile payment field, will have
The mobile phone of NFC function is used as " stored value card ", can simplify payment process, makes to pay safer and more reliable and efficient.
Oneself is realized " brush mobile phone " function for public transport aspect, Beijing Public Transport and subway, and operating process is without connecting net
Network, the mobile phone with NFC function can also swipe the card in the case of power-off, greatly facilitate the trip of people.It is led in shared bicycle
Domain, rubbing to visit bicycle and ofo and share bicycle also successively realizes NFC unlocking function, and user can be used mobile phone and unlock rapidly, solve
Bar code is unlocked the safety problem encountered, and it is more convenient to operate.
The characteristics of identification aspect, NFC technique is due to its bi-directional authentification, in fields such as gate inhibition, logistics, attendance, inspections
All it is widely used.NFC identification function is added in the access control system of some building, and the hand with NFC function can be used in resident
The intelligent wearable devices such as machine or bracelet open gate inhibition.Another important application is electronic business card in terms of authentication, when two
Mobile phone with NFC function close to when, so that it may realize the function of exchanging visiting cards, rapidly and efficiently, conventional business card can also be avoided
The problems such as losing, wearing.
In terms of intelligence communication, NFC technique can carry out the high-speed traffic of mobile terminal, and transmission range is shorter, safety etc.
Grade is higher.Therefore, have in fields, NFC techniques such as electronic entrance ticket, smart home, the transmission of secret file, game, social networks
Compare and is widely applied.
In the prior art, in order to meet user to the various demands of NFC, at the same adapt to mobile terminal increasingly bear it is miscellaneous whole
The form of machine environment, NFC antenna constantly changes, and common are following two NFC antenna: NFC coil antenna (such as millet 8, Huawei
Mate 20Pro etc.) and NFC diversity antenna (such as honor 9, millet 9, patent CN 105940550 of Apple Inc. etc.).
However, NFC coil antenna is single layer coil, harsh to the size requirement of coil (such as 8 area coil of millet is 36*
31.5mm2, Huawei's Mate 20Pro area coil are 46.6*40mm2), and present mobile terminal needs to add 5G antenna, very
It is difficult to guarantee the required area of NFC coil antenna；NFC diversity antenna shares metal edge frame with mobile terminal primary antenna, not only needs
Metal edge frame, and will affect the performance of primary antenna, makes its power decline 1.5dB or so, also, in order to reduce primary antenna with
Influencing each other between NFC diversity antenna needs to add a big inductance in shared feed end, is unfavorable for device layout.
Therefore, the application is asked mainly for technology existing for the above-mentioned coil antenna of NFC in the prior art and NFC diversity antenna
Topic, proposes a kind of NFC antenna for mobile terminal.
The NFC antenna for mobile terminal of the embodiment of the present application is radiated by using a FPC antenna, can be with
The area occupied of NFC antenna is effectively reduced, while in the mobile terminal antenna environment to become increasingly complex, it is with strong applicability.And
And radiated using individual FPC antenna, do not shared with primary antenna, it in the design process, can be by avoiding a spacing
From the influence to primary antenna performance is reduced, further, it is also possible to avoid being conducive to device layout using big inductance.
It is filled with reference to the accompanying drawings to describe the NFC antenna and NFC communication for mobile terminal of the embodiment of the present application proposition
It sets.Before specifically describing the embodiment of the present invention, in order to make it easy to understand, common technology word is introduced first:
FPC refers to the abbreviation of flexible circuit board (Flexible Printed Circuit).
Fig. 1 is the structural schematic diagram provided by the embodiment of the present application one for the NFC antenna of mobile terminal.
In the embodiment of the present application, mobile terminal for example can for mobile phone, tablet computer, personal digital assistant, wearable set
Standby, mobile unit etc. has the hardware device of various operating systems, touch screen and/or display screen.
As shown in Figure 1, the NFC antenna for being used for mobile terminal includes: substrate 10, the ferrite that is arranged on substrate 10
20 and the first FPC antenna 30 for being arranged on ferrite 20, wherein the first FPC antenna 30 includes first end point and second
Endpoint.It should be noted that Fig. 1 only carries out example with the side view of NFC antenna.
In the embodiment of the present application, NFC antenna includes the first FPC antenna 30, and the first FPC antenna 30 is the radiation of NFC antenna
Body generates the performance of NFC.Wherein, two endpoints of the first FPC antenna 30 with being separately connected feeding network and metal, for example,
First end point in one FPC antenna 30 can be feed end, and the second endpoint can be grounding point, alternatively, in the first FPC antenna 30
First end point can be grounding point, the second endpoint can be feeding point.The electric current that feeding network provides flows into feed end, can produce
The raw electric current by feed end to grounding point, to generate magnetic field.
As an example, referring to fig. 2, Fig. 2 is the top view illustration of NFC antenna in the embodiment of the present application.With first
Endpoint is terminal A, and the second endpoint is that terminal B carries out example, wherein terminal A is feed end, connects feeding network, and terminal B is to connect
Place, connection metal.When the electric current that feeding network provides flows into terminal A, since terminal B is grounded, in the first FPC antenna 30
The electric current of A → B can be generated, to generate magnetic field as shown in Figure 3.
In the embodiment of the present application, NFC antenna can also include ferrite 20, wherein ferrite 20 can be with shielding board 10
Influence of the metal environment of lower section to NFC performance, it is ensured that NFC performance is normal.
In the embodiment of the present application, NFC antenna can also include substrate 10, wherein substrate 10 can also be known as support plate, main
Play the role of supporting NFC antenna, mainboard plate bracket, battery can be made or uses graphite or glue by the first of upper layer
FPC antenna 30 and ferrite 20 are pasted on battery backshell.For example, substrate 10 can be cell rear cover.
The NFC antenna of the embodiment of the present application is radiated only with a FPC antenna, can effectively reduce NFC antenna
Area occupied, while in the mobile terminal antenna environment to become increasingly complex, it is with strong applicability.Also, it uses individual FPC days
Line is radiated, and is not shared with primary antenna, in the design process, can be reduced by evacuation certain distance to primary antenna
The influence of energy, while can also avoid being conducive to device layout using big inductance.That is, the NFC antenna form in the application
For single line, NFC antenna is shared different from traditional coil NFC antenna and diversity, the area of NFC antenna both can be effectively reduced,
It again can influence to avoid NFC antenna to mobile terminal primary antenna.
It should be noted that Fig. 1 and Fig. 2 only carry out example by line-styled of NFC antenna, when practical application, this is NFC days
Line can also be " L " type, alternatively, the NFC antenna can also be that " Contraband " type or the NFC antenna can also be U-typed etc.,
The application is to this and with no restrictions.
The NFC antenna for mobile terminal of the embodiment of the present application is radiated by using a FPC antenna, can be with
The area occupied of NFC antenna is effectively reduced, while in the mobile terminal antenna environment to become increasingly complex, it is with strong applicability.And
And radiated using individual FPC antenna, do not shared with primary antenna, it in the design process, can be by avoiding a spacing
From the influence to primary antenna performance is reduced, further, it is also possible to avoid being conducive to device layout using big inductance.
As a kind of possible implementation, the feeding classification of NFC antenna have it is a variety of, both can be using such as Fig. 1 and Fig. 2
Shown in end fed (perhaps be known as uneven feed) differential feed (or referred to as balanced feeding) can also be used, below
In conjunction with Fig. 4, differential feed is described in detail.
Fig. 4 is the structural schematic diagram provided by the embodiment of the present application two for the NFC antenna of mobile terminal.
As shown in figure 4, on the basis of embodiment shown in Fig. 1, which can also include:
Second FPC antenna 40.
Wherein, the second FPC antenna 40 plays the role of conducting electric current, may include third endpoint and the 4th endpoint.It needs
Illustrate, Fig. 4 only carries out example with the side view of NFC antenna, also, is divided with the second FPC antenna 40 and the first FPC antenna 30
Not Wei Yu substrate 10 two sides carry out example.
In the embodiment of the present application, when using differential feed, the first FPC antenna 30 is main radiation area, the second FPC antenna 40
For conducting region (effect for primarily serving conduction electric current).Second FPC antenna 40 can be located at the lower section of substrate 10, i.e., and the 2nd FPC days
Line 40 and the first FPC antenna 30 can be located at the two sides of substrate 10.For example, the second FPC antenna 40 can be to be placed in substrate
10 lower section mainboard upward wiring or to be placed in the FPC cabling below mainboard plate bracket.
Wherein, first end point can be corresponding with third endpoint, and the second endpoint can be corresponding with the 4th endpoint.
As a kind of possible implementation, first end point can connect two output ends of feeding network with third endpoint
Mouthful, i.e., first end point and third endpoint can be feed end.When feeding network power supply, first end point → second endpoint can be generated
→ the four endpoints → third endpoint electric current, to generate magnetic field, wherein the second endpoint and the 4th endpoint are connected, such as second
Endpoint and the 4th endpoint can be connected to using connector (metal clips etc.).
As alternatively possible implementation, the second endpoint and the 4th endpoint can connect two outputs of feeding network
Port, i.e. the second endpoint and the second endpoint can be feed end.When feeding network power supply, the second endpoint → first end can be generated
Point → third endpoint → the 4th endpoint electric current, to generate magnetic field, wherein first end point is connected with third endpoint, such as the
End point can be connected to third endpoint using connector (metal clips etc.).
It as an example, is the side view schematic diagram one of NFC antenna in the embodiment of the present application referring to Fig. 5, Fig. 5.Wherein,
Second FPC antenna 40 and the first FPC antenna 30 are located at the two sides of substrate 10.
In Fig. 5, using first end point as terminal A, the second endpoint is that terminal B carries out example, and using terminal A as feed end, connects
Feeding network is connect, terminal B is grounding point, connection metal, third endpoint is terminal A ', feeding network is connected, the 4th endpoint is
Terminal B ' carry out example.AB sections of the first FPC antenna 30 is main radiation area, and the second FPC antenna 40 of A ' B ' section is that conducting region is (main
Play the role of conducting electric current).Two output ports of terminal A and terminal A ' connection feeding network, terminal B and terminal B ' it adopts
It is connected to connector (metal clips etc.).When feeding network power supply, A → B → B ' → A ' electric current can be generated, to generate magnetic
.
It should be noted that the second FPC antenna 40 may be located between substrate 10 and ferrite 20.Wherein, the 2nd FPC
Antenna 40 can be arranged in a staggered manner, cannot be overlapped up and down with the underlapped setting of the first FPC antenna 30.Pass through the 2nd FPC as a result,
Antenna 40 and the underlapped setting of the first FPC antenna 30, the magnetic field of generation can be superimposed, and can increase magnetic field strength, improve NFC
Energy.Certainly, the second FPC antenna 40 can also be overlapped with the first FPC antenna 30, and the application is to this and with no restriction.
It is the side view schematic diagram two of NFC antenna in the embodiment of the present application referring to Fig. 6, Fig. 6 as another example.Its
In, the second FPC antenna 40 is between substrate 10 and ferrite 20.
In Fig. 6, equally using first end point as terminal A, the second endpoint is terminal B progress example, and is feed with terminal A
End connects feeding network, and terminal B is grounding point, connection metal, third endpoint is terminal A ', connect feeding network, the 4th end
Point is terminal B ' carry out example.AB sections of the first FPC antenna 30 is main radiation area, and the second FPC antenna 40 of A ' B ' section is conduction
Area's (effect for primarily serving conduction electric current).Two output ports of terminal A and terminal A ' connection feeding network, terminal B and end
Point B ' is connected to using connector (metal clips etc.).When feeding network power supply, A → B → B ' → A ' electric current can be generated, thus
Generate magnetic field.
It should be noted that in Fig. 5 and Fig. 6, only with terminal A and terminal A ' connection feeding network, terminal B and terminal B ' it adopts
Carries out example with connector (metal clips etc.) connection, can also be by terminal B and terminal B when practical application ' connect transmission network
Network, terminal A and terminal A ' it is connected to using connector (metal clips etc.), the application is to this and with no restriction.
The NFC antenna of the embodiment of the present application, by using differential feed mode, when the second FPC antenna 40 and the first FPC days
When 30 underlapped setting of line, the magnetic field of generation can be superimposed, and can increase magnetic field strength, improve NFC performance.Also, the application
In, feeding classification multiplicity both can also use end fed, selectivity multiplicity, Ke Yiti using conventional differential feed
Rise the applicability of the NFC antenna.
It should be noted that in above-described embodiment, in order to make it easy to understand, being only greater than iron with the length of the first FPC antenna 30
The length of oxysome 20 carries out example, when the length of the first FPC antenna 30 is greater than the length of ferrite 20, can make first end
Point and the second endpoint are hanging relative to substrate 10.However when practical application, length and iron oxygen of the application to the first FPC antenna 30
The length of body 20 and with no restrictions.For example, the length of ferrite 20 can also be greater than the length of the first FPC antenna 30, at this point, can
At the endpoint of the first FPC antenna 30, ferrite 20 to be punched, allow the first FPC antenna 30 and NFC chip phase
Even, alternatively, making the first FPC antenna 30 be connected with the second FPC antenna, such as can be in the second endpoint of the first FPC antenna 30
Place, ferrite 20 is punched, so that the second endpoint and the connection of the 4th endpoint of the second FPC antenna 40.
As a kind of possible implementation, the first FPC antenna 30 can be identical with 40 length of the second FPC antenna, alternatively,
Can also be different, the application to this and with no restrictions, only with the first FPC antenna 30 and the second FPC antenna 40 in above-described embodiment
The identical carry out example of length.
In order to realize above-described embodiment, the application also proposes a kind of NFC communication device for mobile terminal.
Fig. 7 is the structural schematic diagram provided by the embodiment of the present application three for the NFC communication device of mobile terminal.
As shown in fig. 7, the NFC communication device for being used for mobile terminal includes: aforementioned any embodiment proposition for moving
The NFC antenna 100 of dynamic terminal, the matching network 200 being connected with NFC antenna 100, and the NFC core being connected with matching network 200
Piece 300.Thus, it is possible to realize NFC communication function.
It as an example, is the structural representation of NFC communication device provided by the embodiment of the present application four referring to Fig. 8, Fig. 8
Figure.Wherein, with using end fed carry out example, and with NFC chip be NFC integrated circuit (Integrated Circuit,
Abbreviation IC) example is carried out, which is attached with matching network, and matching network is attached with NFC antenna feed point, example
Such as, matching network can in Fig. 2 terminal A or terminal B connect.Thus, it is possible to realize NFC communication function.It needs to illustrate
It is that in Fig. 8, end fed is uneven feed, and NFC antenna output is balanced signal, it can be by flat in matching network
Above-mentioned balanced signal is converted to unbalanced signal by weighing apparatus-imbalance converter.
As another example, referring to Fig. 9, Fig. 9 is that the structure of NFC communication device provided by the embodiment of the present application five is shown
It is intended to.Wherein, with using differential feed carry out example, and with NFC chip be NFC IC carry out example, the NFC IC with match
Network is attached, and matching network is attached with NFC antenna feed point, for example, matching network can be with the end in Fig. 5 or Fig. 6
Point A and terminal A ' connection, or with terminal B and terminal B ' are connect.Thus, it is possible to realize NFC communication function.
It should be noted that previous embodiment is also applied for the reality to the explanation of the NFC antenna for mobile terminal
The NFC communication device for mobile terminal for applying example, is not repeated herein.
The NFC communication device for mobile terminal of the embodiment of the present application, is radiated by using a FPC antenna,
The area occupied of NFC antenna can be effectively reduced, while in the mobile terminal antenna environment to become increasingly complex, applicability compared with
By force.Also, it is radiated using individual FPC antenna, is not shared with primary antenna, in the design process, evacuation can be passed through
Certain distance reduces the influence to primary antenna performance, further, it is also possible to avoid being conducive to device layout using big inductance.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present application, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing custom logic function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the application includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be by the application
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction
The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium ", which can be, any may include, stores, communicates, propagates or pass
Defeated program is for instruction execution system, device or equipment or the dress used in conjunction with these instruction execution systems, device or equipment
It sets.The more specific example (non-exhaustive list) of computer-readable medium include the following: there is the electricity of one or more wirings
Interconnecting piece (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the application can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.Such as, if realized with hardware in another embodiment, following skill well known in the art can be used
Any one of art or their combination are realized: have for data-signal is realized the logic gates of logic function from
Logic circuit is dissipated, the specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene can compile
Journey gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, can integrate in a processing module in each functional unit in each embodiment of the application
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..Although having been shown and retouching above
Embodiments herein is stated, it is to be understood that above-described embodiment is exemplary, and should not be understood as the limit to the application
System, those skilled in the art can be changed above-described embodiment, modify, replace and become within the scope of application
Type.
Claims (10)
1. a kind of near-field communication NFC antenna for mobile terminal characterized by comprising
Substrate；
Ferrite on the substrate is set；
The first flexible circuit board FPC antenna on the ferrite is set, wherein first FPC antenna includes first
Endpoint and the second endpoint.
2. being used for the NFC antenna of mobile terminal as described in claim 1, which is characterized in that the first end point is feed end,
Second endpoint is grounding point.
3. being used for the NFC antenna of mobile terminal as claimed in claim 2, which is characterized in that the length of first FPC antenna
Greater than the ferritic length, so that the first end point and second endpoint are hanging relative to the substrate.
4. being used for the NFC antenna of mobile terminal as described in claim 1, which is characterized in that further include:
Second FPC antenna, second FPC antenna include third endpoint and the 4th endpoint.
5. being used for the NFC antenna of mobile terminal as claimed in claim 4, which is characterized in that second endpoint and described the
Four endpoints are connected.
6. being used for the NFC antenna of mobile terminal as claimed in claim 4, which is characterized in that the first end point and described the
Three endpoints are corresponding, and second endpoint is corresponding with the 4th endpoint.
7. as claimed in claim 4 be used for mobile terminal NFC antenna, which is characterized in that first FPC antenna with it is described
The underlapped setting of second FPC antenna.
8. being used for the NFC antenna of mobile terminal as claimed in claim 4, which is characterized in that second FPC antenna is located at institute
It states between substrate and the ferrite.
9. being used for the NFC antenna of mobile terminal as claimed in claim 4, which is characterized in that second FPC antenna and described
First FPC antenna is located at the two sides of substrate.
10. a kind of NFC communication device for mobile terminal characterized by comprising
Such as the described in any item NFC antennas of claim 1-9；
The matching network being connected with the NFC antenna；
The NFC chip being connected with the matching network.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910833232.8A CN110504524A (en) | 2019-09-04 | 2019-09-04 | NFC antenna and NFC communication device for mobile terminal |
| EP20859979.5A EP4007065A4 (en) | 2019-09-04 | 2020-09-03 | Nfc antenna used for mobile terminal, and nfc communication apparatus |
| PCT/CN2020/113175 WO2021043199A1 (en) | 2019-09-04 | 2020-09-03 | Nfc antenna used for mobile terminal, and nfc communication apparatus |
| US17/677,562 US11978952B2 (en) | 2019-09-04 | 2022-02-22 | NFC antenna and NFC communication apparatus for mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910833232.8A CN110504524A (en) | 2019-09-04 | 2019-09-04 | NFC antenna and NFC communication device for mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110504524A true CN110504524A (en) | 2019-11-26 |
Family
ID=68591245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910833232.8A Pending CN110504524A (en) | 2019-09-04 | 2019-09-04 | NFC antenna and NFC communication device for mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110504524A (en) |
Cited By (1)
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| WO2021043199A1 (en) * | 2019-09-04 | 2021-03-11 | Oppo广东移动通信有限公司 | Nfc antenna used for mobile terminal, and nfc communication apparatus |
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