CN103515698A - NFC (Near Field Communication) antenna and electronic equipment - Google Patents
NFC (Near Field Communication) antenna and electronic equipment Download PDFInfo
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- CN103515698A CN103515698A CN201210216978.2A CN201210216978A CN103515698A CN 103515698 A CN103515698 A CN 103515698A CN 201210216978 A CN201210216978 A CN 201210216978A CN 103515698 A CN103515698 A CN 103515698A
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Abstract
The invention belongs to the antenna field, and specifically discloses an NFC (Near Field Communication) antenna arranged in electronic equipment. The NFC antenna comprises an insulating substrate having a bearing surface and coils arranged on the bearing surface, wherein the coils comprise an NFC coil and a wireless charging induction coil used for receiving an external radio-frequency signal and charging the electronic equipment. The invention also provides the electronic equipment comprising the above NFC antenna. Compared with the prior art, the NFC antenna provided by the invention comprises the NFC coil and the wireless charging induction coil capable of charging the electronic equipment, by arranging the NFC coil and the wireless charging induction coil on the same insulating substrate, space can be saved, and the function of wireless charging also can be realized. The electronic equipment applying the NFC antenna not only can realize a communication function, but also can realize a wireless charging function, thus the use is more convenient.
Description
Technical field
The invention belongs to field of antenna, be specifically related to a kind of near field communication antenna and apply its electronic equipment.
Background technology
Near-field communication (NFC, Near Field Communication), is that a kind of electromagnetic induction transmitting-receiving electromagnetic wave that utilizes is realized the technology of close range wireless communication between electronic equipment, and has expedited the emergence of thus the electronic equipments such as mobile phone of near field payment function.It changes the mode that people use some daily life equipment to a great extent, particularly uses the mode of credit card, key and cash.
Development along with mechanics of communication, user requires more and more higher to the ease of use of the portable electric appts of some electronic equipments (such as mobile phone, digital camera etc.), the charging port criteria of right and wrong of some electronic equipment, even the user of some standard charging port also wants to ask the function of wireless charging.
But, the present inventor finds: current electronic equipment, mobile phone for example, internal structure is more and more compacter, the function requiring is also more and more, and a lot of near field communication antennas only have the function of communication, if while needing wireless charging, need other module to carry out wireless charging, this just need to take compare great space.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, thereby a kind of near field communication antenna that not only can realize communication but also can carry out wireless charging function is provided.
For solving the problems of the technologies described above, the invention provides following technical scheme:
A kind of near field communication antenna, be arranged in electronic equipment, this near field communication antenna comprises: have loading end insulated substrate, be arranged on the coil on loading end, described coil comprises near-field communication coil and the wireless charging induction coil for receiving external radio-frequency signal and described electronic equipment being charged.
The present invention also provides a kind of electronic equipment, comprises above-mentioned near field communication antenna.
Compared with prior art, the present invention has following beneficial effect: near field communication antenna provided by the invention, this antenna has comprised near-field communication coil and the wireless charging induction coil that can charge to electronic equipment, communication and wireless charging are arranged on same insulated substrate, can conserve space, and realize the function of wireless charging.Apply the electronic equipment of this near field communication antenna, not only can realize communication function but also can realize wireless charging function, it is more convenient to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of first embodiment of the invention coil.
Fig. 2 is the structural representation of second embodiment of the invention coil.
Fig. 3 is the structural representation of third embodiment of the invention coil.
Fig. 4 is the structural representation of fourth embodiment of the invention coil.
Fig. 5 is the structural representation of fifth embodiment of the invention coil.
Fig. 6 is the structural representation of sixth embodiment of the invention coil.
Fig. 7 is each layer of structural representation of embodiment of the present invention near field communication antenna.
Embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The invention discloses a kind of near field communication antenna, be arranged in electronic equipment, this near field communication antenna comprises: have loading end insulated substrate, be arranged on the coil on loading end, Fig. 1 to Fig. 6 is the structural representation of six embodiment coils of the present invention,, described coil 20 comprises near-field communication coil 21 and the wireless charging induction coil 22 for receiving external radio-frequency signal and described electronic equipment being charged.Communication and wireless charging have been arranged on same insulated substrate, can conserve space, and realize the function of wireless charging.
As shown in Figure 1 to Figure 4 and shown in Fig. 6, the coil 21 of near-field communication described in embodiment of the present invention two ends are the first distributing point 211 and the second distributing point 212; Described wireless charging induction coil 22 two ends are described the first distributing point 211 and the 3rd distributing point 221.When carrying out communication, the first distributing point 211 can be connected with the device of wanted communication with the second distributing point 212; When carrying out wireless charging, the first distributing point 211 is connected with the battery circuit that the 3rd distributing point 221Yu place equipment need to charge.Such structure, when using wireless charging, wireless charging induction coil 22 has comprised and had originally carried out the coil of communication, therefore can be effective and reasonable utilize coil.
In embodiments of the invention, the coil that the first distributing point 211 is connected with the second distributing point 212 is arranged on the outside of the connecting coil of the second distributing point 212 and the 3rd distributing point 221; Be illustrated in figure 1 the first embodiment, two coils only have contact at the right and left of direction as shown, on upper and lower both sides, be separately, such structure is mainly used to adjust the quality factor q of Wireless charging coil and the needed coil sense of NFC antenna value L, capacitance C and antenna, can stick the magnetic conduction sheet of different permeabilities in suitable position, the two ends that separate up and down simultaneously, be used for the impact of shielded metal device on antenna for mobile phone, strengthen the magnetic flux of Wireless charging coil and NFC antenna.
Be illustrated in figure 2 the second embodiment of the present invention, described two coils only have on the top of direction as shown separately, in other three directions, all there is contact, such structure is mainly used to adjust the quality factor q of Wireless charging coil and the needed coil sense of NFC antenna value L, capacitance C and antenna, can stick the magnetic conduction sheet of different permeabilities in the suitable position of the coiler part separating simultaneously, be used for the impact of shielded metal device on antenna for mobile phone, strengthen the magnetic flux of Wireless charging coil and NFC antenna.
Be illustrated in figure 3 the third embodiment of the present invention, the coil that the first distributing point 211 of direction is connected with the second distributing point 212 is as shown arranged on the outside of the coil that the second distributing point 212 is connected with the 3rd distributing point 221 completely, described two coils only have outside connection in the residing approximate location of the second distributing point 212, other positions are separately, such structure is mainly used to adjust Wireless charging coil and the needed coil sense of NFC antenna value L, the quality factor q of capacitance C and antenna, can stick the magnetic conduction sheet of different permeabilities in the suitable position of interior loop surrounding simultaneously, be used for the impact of shielded metal device on antenna for mobile phone, strengthen the magnetic flux of Wireless charging coil and NFC antenna.
Be illustrated in figure 4 the fourth embodiment of the present invention, the coil that described the first distributing point 211 is connected with the second distributing point 212 is set up in parallel with the coil that the 3rd distributing point 221 is connected with the second distributing point 212, as shown, the coil that described the first distributing point 211 is connected with the second distributing point 212 is arranged on the left side of direction as shown, the coil that the second distributing point 212 is connected with the 3rd distributing point 221 is arranged on the right of direction as shown, and the Wireless charging coil 22 of this enforcement is still comprised of two above-mentioned coils.Such structure is used for meeting the position needs of different handset structures to wireless charging and NFC antenna, and it is minimum that influencing each other of Wireless charging coil and NFC antenna dropped to.
Be illustrated in figure 5 the fifth embodiment of the present invention, described near-field communication coil 21 two ends are the first distributing point 211 and the second distributing point 212; Described wireless charging induction coil 22 two ends are described the 3rd distributing point 221 and the 4th distributing point 222.Such structure near-field communication coil 21 separates completely with wireless charging induction coil 22, for isolated, exists, and the coil arranging so front four embodiment that compare have wasted coil sections, still can not disturb each other.
In the various embodiments described above, near-field communication coiler part adopts the operating frequency of 13.56MHz, and general frequency is that 12.56 ~ 14.56MHz all meets the demands.The frequency of described wireless charging induction coil is 110KHZ ~ 205KHZ.The number of turn of near-field communication coil is generally 2 ~ 8 circles, and the number of turn of wireless charging induction coil is 10 ~ 30 circles, but arranges in any case, all needs to meet above-mentioned frequency.In the present embodiment, the thickness of wireless charging induction coil is more than or equal to 18um and is less than or equal to 100um.Along with the increase of thickness, the fever phenomenon of charge coil can improve, and the efficiency of wireless charging also will increase.But due to electronic equipment, for example restriction of internal structure of mobile phone and FPC(flexible circuit board) processing procedure restriction, metal layer thickness is controlled at above-mentioned scope.
In the arranging of above-mentioned near field communication antenna, if when the distributing point of lead-out wire cannot be drawn in same plane, can draw by the modes such as via hole are set, and then by the distributing point setting of drawing and corresponding coil in same plane.The embodiment of the present invention can be produced needed coil by etched mode, then by above-mentioned corresponding distributing point, is connected respectively on equipment needed thereby and is debugged.Above-mentioned coil can pass through Copper Foil, etching aluminum foil (FPC) or electroplate or laser direct forming (Laser Direct Structuring, LDS) etc. technique realizes, especially flexible circuit board (FPC) is above made this coil, and that this near field communication antenna can be made is thinner and soft.
In an embodiment of the present invention, also at least a slice magnetic conduction sheet can be set on described near-field communication coil or wireless charging induction coil, as shown in Figure 6, be that the coil top that is connected with the 3rd distributing point 221 at the second distributing point 212 is divided and is provided with magnetic conduction sheet 50, in order to improve the efficiency of wireless charging.In other embodiments, also can be arranged on the coil that the first distributing point 211 is connected with the second distributing point 212, be used for the impact of shielded metal device on antenna for mobile phone, strengthen the magnetic flux of Wireless charging coil and NFC antenna.
As shown in Figure 7; for each layer of structural representation of embodiment of the present invention near field communication antenna; can find out; this near field communication antenna comprises: the insulated substrate 10 with loading end; be arranged on the coil 20 on loading end; on coil 20 place layers, be also provided with solder mask 30, the circuit of solder mask 30 in can protection circuit layer is not oxidized, partial short-circuit, prevent from polluting etc.On solder mask 30, be provided with magnetic conduction sheet 50.Magnetic conduction sheet 50 is fixed on solder mask 30 by the first adhered layer 40.The first adhered layer 40 wherein can be the stickums such as glue or double faced adhesive tape.Magnetic conduction sheet 50 can be ferrite, and by magnetic, by mode moulding such as the tape casting or sintering, its effect is to strengthen magnetic flux on the one hand, improves the Q value of antenna, strengthens antenna reception performance, on the other hand can the impact of shielded metal material on antenna.The one side relative with insulated substrate 10 loading ends can also arrange the second adhered layer 60, with convenient antenna, pastes on required equipment.
The coil 20 of the embodiment of the present invention can adopt a kind of of copper, aluminium, silver slurry or above-mentioned alloy, and by techniques such as etching, printing, plating, chemical depositions, make, and add coating on its surface, as megohmite insulants such as ink, wear prevention or short circuit.Insulated substrate 10 adopts PI(polyimides, polymide), PET(PETG, polyethylene terephthalate), a kind of in FR4.Wherein, FR-4 is a kind of code name of flame resistant material grade, the meaning of representative is resin material must can be from a kind of material specification of horizontal blanking through fired state, it is not a kind of title material, but a kind of material rate, therefore at present general circuit plate FR-4 grade material used just has very many kinds, but majority is all epoxy resin with so-called four functions, adds the composite material that filler (Filler) and glass fibre are made.
Because the ferrite of magnetic conduction sheet 50 by easy magnetic conduction forms; but magnetic sheet is frangible; area is larger; yield is lower; embodiments of the invention, owing to being the local magnetic sheet that uses, can cover layer protecting film on magnetic conduction sheet surface, and wherein diaphragm is by PI (Polyimide; polyimides), PET(Polyethylene terephthalate, poly terephthalic acid class plastics) etc. material form.Can protect magnetic conduction sheet not damaged.
The embodiment of the present invention is by being designed into NFC function coil and Wireless charging coil together, can utilize to a great extent the finite structure space of electronic equipment, simultaneously, due to two kinds of function coils are integrated together, be that the processing procedure of FPC itself or the assembling of product, test etc. have all greatly reduced operational sequence, reduced manufacturing cost and people's cost of labor.
The present invention also provides a kind of electronic equipment, comprises the near field communication antenna in above-described embodiment.Apply the electronic equipment of this near field communication antenna, not only can realize communication function but also can realize wireless charging function, it is more convenient to use.Described electronic equipment is preferably mobile phone, can be also other electronic equipments that need to apply near field communication antenna.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a near field communication antenna, be arranged in electronic equipment, this near field communication antenna comprises: have loading end insulated substrate, be arranged on the coil on loading end, it is characterized in that, described coil comprises near-field communication coil and the wireless charging induction coil for receiving external radio-frequency signal and described electronic equipment being charged.
2. near field communication antenna according to claim 1, is characterized in that, the two ends of described near-field communication coil are the first distributing point and the second distributing point; The two ends of described wireless charging induction coil are described the first distributing point and the 3rd distributing point.
3. near field communication antenna according to claim 1, is characterized in that, the two ends of described near-field communication coil are the first distributing point and the second distributing point; The two ends of described wireless charging induction coil are described the 3rd distributing point and the 4th distributing point.
4. according to the near field communication antenna described in claim 1-3 any one, it is characterized in that, the frequency of described wireless charging induction coil is 110KHZ ~ 205KHZ.
5. according to the near field communication antenna described in claim 1-3 any one, it is characterized in that, the thickness of wireless charging induction coil is more than or equal to 18um and is less than or equal to 100um.
6. according to the near field communication antenna described in claim 1-3 any one, it is characterized in that, on described near-field communication coil or wireless charging induction coil, be provided with at least a slice magnetic conduction sheet.
7. near field communication antenna according to claim 6, is characterized in that, on the layer of coil place, is also provided with solder mask, and described magnetic conduction sheet is arranged on described solder mask.
8. near field communication antenna according to claim 7, is characterized in that, described magnetic conduction sheet is fixed on solder mask by the first adhered layer.
9. an electronic equipment, is characterized in that, comprises the near field communication antenna described in claim 1-8 any one.
10. near field communication antenna according to claim 9, is characterized in that, described electronic equipment is mobile phone.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210216978.2A CN103515698A (en) | 2012-06-28 | 2012-06-28 | NFC (Near Field Communication) antenna and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210216978.2A CN103515698A (en) | 2012-06-28 | 2012-06-28 | NFC (Near Field Communication) antenna and electronic equipment |
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| CN103515698A true CN103515698A (en) | 2014-01-15 |
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| CN201210216978.2A Pending CN103515698A (en) | 2012-06-28 | 2012-06-28 | NFC (Near Field Communication) antenna and electronic equipment |
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