CN203039106U - NFC (near field communication) antenna and NFC device - Google Patents
NFC (near field communication) antenna and NFC device Download PDFInfo
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- CN203039106U CN203039106U CN 201320040949 CN201320040949U CN203039106U CN 203039106 U CN203039106 U CN 203039106U CN 201320040949 CN201320040949 CN 201320040949 CN 201320040949 U CN201320040949 U CN 201320040949U CN 203039106 U CN203039106 U CN 203039106U
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Abstract
The utility model provides an NFC (near field communication) antenna and NFC device, wherein four layers of routing wires are printed on a FPC (flexible printed circuit) board. The NFC antenna comprises the FPC circuit board and the four layers of routing wires sequentially printed on a surface of the FPC board. The four layers of routing wires are connected via through holes, and thus in the case that the lengths of the routing wires are the same, a plate and frame size of the NFC antenna is substantially reduced, and NFC effects are realized by utilizing radiation and reception of the NFC antenna, and manufacturing of light, small-sized and thin NFC devices is facilitated.
Description
Technical field
The utility model relates to wireless communication technology field, relates in particular to a kind of NFC antenna and a kind of NFC communication equipment.
Background technology
Near-field communication (NFC, Near Field Communication), be that a kind of magnetic field induction transmitting-receiving electromagnetic wave that utilizes is realized the closely near field communication (NFC) of communication between the electronic equipment, along with the development of antenna, the NFC antenna has obtained application more and more widely.NFC is a kind of contactless identification and interconnection technique, can carry out wireless near field communication at Tool Rooms such as mobile device, PC, smart controls.NFC provides a kind of solution of simple, touch, can allow consumer's simple, intuitive ground exchange message, accessed content and service.
NFC can provide wireless connect technology light, safe, efficient communication as a kind of, it is compared with other wireless connections mode has many advantages: at first, its transmission range is than RFID(Radio FrequencyIdentification Devices, radio frequency identification) little, the transmission range of RFID can reach several meters even tens meters, but because NFC has taked unique signal attenuation technique, NFC has characteristics such as distance is near, bandwidth is high, energy consumption is low with respect to RFID; Secondly, NFC and existing contactless smart card technical compatibility have become the official standard that obtains the support of more and more leading firms at present; Again, NFC still is a kind of closely connection protocol, and it provides between various device easily, safety, communication rapidly and automatically.
Most of NFC antennas are paster antenna in the prior art, and cost is higher.In addition, existing paster NFC antenna is individual layer or doubling plate, makes that the size of NFC antenna is bigger than normal, is difficult to be applied in the equipment of miniaturization day by day.
Therefore, need a kind of new NFC antenna and a kind of NFC communication equipment, to avoid above-mentioned defective.
The utility model content
The purpose of this utility model is to provide a kind of NFC antenna and a kind of NFC communication equipment, under the identical situation of track lengths, reduces the sheet frame size of NFC antenna.
For addressing the above problem, the utility model provides a kind of NFC antenna, comprising: FPC circuit board and be printed on its lip-deep four layers of cablings successively, and described four layers of cabling connect by via hole; Described four layers of cabling are along being followed successively by ground floor cabling, second layer cabling, the 3rd layer of cabling, the 4th layer of cabling away from FPC circuit board surface direction, described ground floor cabling, second layer cabling, the 3rd layer of cabling are non-closing coil, and whole story of described non-closing coil end be provided with different via holes, described the 4th layer of cabling is the segmentation cabling, every section cabling connects corresponding two different via holes, to realize the connection of three layers of non-closing coil.
Further, the end terminal and the 4th layer of cabling of described ground floor cabling also is provided with pad.
Further, between the adjacent two layers cabling in described four layers of cabling the FR4 dielectric layer is arranged, dielectric constant is 3.9 ~ 4.2; The live width of described four layers of cabling is 0.2mm ~ 0.3mm, and distance between centers of tracks is 0.2mm ~ 0.3mm.
Further, described NFC antenna also comprises the ferrite that is positioned at the FPC circuit board surface relative with the FPC circuit board surface at described four layers of cabling place.
Further, post on the surface of described ferrite away from described FPC circuit board surface the NFC antenna is attached to two-sided sticker on the PCB circuit board.
Further, the described PCB circuit board PCB circuit board that is bluetooth earphone.
The utility model also provides a kind of NFC communication equipment, comprises a PCB circuit board and one of the above-mentioned NFC antenna that is connected with described PCB circuit board.
Further, described NFC communication equipment is bluetooth earphone.
Compared with prior art, a kind of NFC antenna that the utility model provides and a kind of NFC communication equipment, print four layers of cabling at the FPC circuit board, thereby under the identical situation of track lengths, reduce the sheet frame size of NFC antenna, be beneficial to the manufacturing of the NFC communication equipment of realizing lightweight, miniaturization, slimming.
Description of drawings
Fig. 1 is the structural representation of the NFC antenna of the utility model one embodiment;
Fig. 2 is the structural representation of the ground floor cabling of NFC antenna shown in Figure 1;
Fig. 3 is the structural representation of the second layer cabling of NFC antenna shown in Figure 1;
Fig. 4 is the structural representation of the 3rd layer of cabling of NFC antenna shown in Figure 1;
Fig. 5 is the structural representation of the 4th layer of cabling of NFC antenna shown in Figure 1;
Fig. 6 is the manufacture method flow chart of NFC antenna shown in Figure 1.
Embodiment
Core concept of the present utility model is to disclose a kind of NFC antenna and a kind of NFC communication equipment, and at FPC circuit board (flexible printed circuit board) printing 4 laminate cablings, the FPC circuit board has characteristics such as distribution density height, in light weight, thin thickness.The NFC antenna is made the FPC pattern, but free bend, folding, reel, can be arbitrarily mobile and flexible at three dimensions; Perfect heat-dissipating can be utilized the FPC reduced volume; Can realize lightweight, miniaturization, slimming, thereby reach integrated that component arrangement is connected with lead.Thereby at FPC circuit board printing 4 laminate cablings, can under the identical situation of track lengths, reduce the sheet frame size of NFC antenna greatly, utilize the radiation and the effect that receives realization NFC near-field communication of NFC antenna.
In description of the present utility model, it will be appreciated that, term " on ", D score, " front ", " back side ", " top ", close the orientation of indications such as " ends " or position is based on orientation shown in the drawings or position relation, only be the utility model and simplification description for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, for example " second layer cabling is arranged " on the ground floor cabling, orientation or position relation based on ground floor cabling shown in the drawings and second layer cabling have been represented, but do not express dielectric layer and the number of plies thereof between ground floor cabling and the second layer cabling, only be the utility model and simplification description for convenience of description, so these terms can not be interpreted as restriction of the present utility model.
For the purpose of this utility model, feature are become apparent, below in conjunction with accompanying drawing embodiment of the present utility model is further described, yet the utility model can be realized with different forms, should not think just to be confined to described embodiment.
Please refer to Fig. 1 to Fig. 5, present embodiment provides a kind of NFC antenna, comprise: FPC circuit board 10 and be printed on its lip-deep four layers of cablings 11 successively, described four layers of cabling 11 connect by via hole 12 mutual conduction, and by the circuit turn-on on pad 13 and the PCB circuit board.Described four layers of cabling are ground floor cabling 111, second layer cabling 112, the 3rd layer of cabling 113, the 4th layer of cabling 114 along being arranged in order away from FPC circuit board surface direction.In the present embodiment, described ground floor cabling 111, second layer cabling 112, the 3rd layer of cabling 113 are non-closing coil, and described the 4th layer of cabling 114 is the segmentation cabling, and the adjacent two layers cabling staggers mutually.
Wherein, the sheet material of described FPC circuit board 10 can for PI (polyimides, polymide), a kind of among PET (PETG, polyethylene terephthalate), the FR4; Between the adjacent two layers cabling in described four layers of cabling the FR4 dielectric layer is arranged, dielectric constant is 3.9 ~ 4.2; FR4 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 the used FR4 grade material of general circuit plate just has very many kinds at present, but majority all is the epoxy resin with so-called four functions adds the composite material that filler (Filler) and glass fibre are made, described four layers of cabling 11 adopt copper, aluminium, silver slurry or a kind of of above-mentioned alloy make, live width is 0.2mm ~ 0.3mm, and distance between centers of tracks is 0.2mm ~ 0.3mm.In the present embodiment, the dielectric constant of FR4 dielectric layer is 4.2, and described four layers of cabling are copper cash, and live width is 0.2mm, and distance between centers of tracks is 0.2mm, and total length is 763.7mm.
Figure 2 shows that the ground floor Wiring structure schematic diagram of NFC antenna shown in Figure 1.Wherein, ground floor cabling 111 is non-closing coil, its top is equipped with first via hole 121, end is provided with pad 131, be used for an end of the circuit on the welding one PCB circuit board, described PCB circuit board can be the main circuit board of single sound channel bluetooth headset, mobile phone or other portable multimedia terminal.
Figure 3 shows that the second layer Wiring structure schematic diagram of NFC antenna shown in Figure 1.Wherein, second layer cabling 112 is non-closing coil, and its top is equipped with second via hole 122, and end is provided with the 3rd via hole 123.
Figure 4 shows that the 3rd layer of Wiring structure schematic diagram of NFC antenna shown in Figure 1.Wherein, the 3rd layer of cabling 113 is non-closing coil, and its top is equipped with the 4th via hole 124, and end is provided with the 5th via hole 125.
Figure 5 shows that the 4th layer of Wiring structure schematic diagram of NFC antenna shown in Figure 1.Wherein, the 4th layer of cabling 114 is the segmentation cabling, and wherein one section cabling connects first via hole 121 and the 3rd via hole 123, realizes that the ground floor cabling is connected with the conducting of second layer cabling; One section cabling connects second via hole 122 and the 5th via hole 125, realizes that second layer cabling is connected with the conducting of the 3rd layer of cabling; The end of the 4th layer of cabling 114 is provided with another pad 132, welds the other end of the circuit on the described pcb board, the 4th via hole 124 is connected with pad 132, so that the circuit on four layers of cabling and the described pcb board is connected to form the loop.
In order to satisfy the manufacturing requirement of some equipment that the radiation intensity of NFC antenna is had relatively high expectations, can paste ferrite at the above-mentioned NFC antenna back side, namely paste ferrite at the FPC circuit board surface relative with the FPC circuit board surface at described four layers of cabling place, that is to say, if described four layers of cabling are positioned on the FPC circuit board front, then ferrite is positioned on the FPC back of circuit board.
Further, for the NFC antenna conveniently is placed on the PCB circuit board, can paste two-sided sticker away from the surface of described FPC circuit board surface at described ferrite, to realize the flexible design of NFC antenna on the PCB circuit board.
Present embodiment also provides a kind of NFC communication equipment, comprises a PCB circuit board and the above-mentioned NFC antenna that is connected with described PCB circuit board.Described NFC communication equipment can be single sound channel bluetooth headset, mobile phone or other portable multimedia terminal.
Please refer to Fig. 1 to 6, present embodiment also provides a kind of manufacture method of NFC antenna, comprising:
S1 provides a FPC circuit board 10, forms ground floor cabling 111 at described FPC circuit board 10, and first via hole 121 is set at the top of described ground floor cabling 111;
S2 forms second layer cabling 112 at described ground floor cabling 111, and the end at the whole story of described second layer cabling 112 arranges second via hole 122 and the 3rd via hole 123 respectively;
S3 forms the 3rd layer of cabling 113 at described second layer cabling 112, and the end at the whole story of described the 3rd layer of cabling 113 arranges the 4th via hole 124 and the 5th via hole 125 respectively;
S4 forms the 4th layer of cabling 114 at described the 3rd layer of cabling 113, described the 4th layer of cabling 114 with first via hole 121 be connected with the 3rd via hole 123, second via hole 122 is connected with the 5th via hole 125.
In the present embodiment, owing to adopt four layers of cabling, must guarantee not short circuit between every layer of cabling, therefore in arbitrary step of step S2 to S3, form the description of having saved middle processes in the one deck of back at preceding one deck, but can infer these pilot processs voluntarily fully as those skilled in the art, for example after preceding one deck forms, before back one deck forms, also comprise the process that forms the FR4 dielectric layer thereon.
In sum, a kind of NFC antenna that present embodiment provides and a kind of NFC communication equipment are printed four layers of cabling at the FPC circuit board, thereby under the identical situation of track lengths, reduce the sheet frame size of NFC antenna, be beneficial to the manufacturing of the NFC communication equipment of realizing lightweight, miniaturization, slimming.
Obviously, those skilled in the art can carry out various changes and modification to utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (8)
1. a NFC antenna is characterized in that, comprising: FPC circuit board and be printed on its lip-deep four layers of cablings successively, and described four layers of cabling connect by via hole; Described four layers of cabling are along being followed successively by ground floor cabling, second layer cabling, the 3rd layer of cabling, the 4th layer of cabling away from FPC circuit board surface direction, described ground floor cabling, second layer cabling, the 3rd layer of cabling are non-closing coil, and whole story of described non-closing coil end be provided with different via holes, described the 4th layer of cabling is the segmentation cabling, every section cabling connects corresponding two different via holes, to realize the connection of three layers of non-closing coil.
2. NFC antenna as claimed in claim 1 is characterized in that, the end terminal and the 4th layer of cabling of described ground floor cabling also is provided with pad.
3. NFC antenna as claimed in claim 1 or 2 is characterized in that, between the adjacent two layers cabling in described four layers of cabling the FR4 dielectric layer is arranged, and dielectric constant is 3.9 ~ 4.2; The live width of described four layers of cabling is 0.2mm ~ 0.3mm, and distance between centers of tracks is 0.2mm ~ 0.3mm.
4. NFC antenna as claimed in claim 1 or 2 is characterized in that, also comprises the ferrite that is positioned at the FPC circuit board surface relative with the FPC circuit board surface at described four layers of cabling place.
5. NFC antenna as claimed in claim 4 is characterized in that, posts on the surface of described ferrite away from described FPC circuit board surface the NFC antenna is attached to two-sided sticker on the PCB circuit board.
6. NFC antenna as claimed in claim 5 is characterized in that, the PCB circuit board that described PCB circuit board is bluetooth earphone.
7. NFC communication equipment, its feature be, comprise a PCB circuit board and with claim 1 to 6 that described PCB circuit board is connected in each described NFC antenna.
8. NFC communication equipment as claimed in claim 7, its feature is being that described NFC communication equipment is bluetooth earphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320040949 CN203039106U (en) | 2013-01-24 | 2013-01-24 | NFC (near field communication) antenna and NFC device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320040949 CN203039106U (en) | 2013-01-24 | 2013-01-24 | NFC (near field communication) antenna and NFC device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039106U true CN203039106U (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320040949 Expired - Fee Related CN203039106U (en) | 2013-01-24 | 2013-01-24 | NFC (near field communication) antenna and NFC device |
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| Country | Link |
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| CN (1) | CN203039106U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050779A (en) * | 2013-01-24 | 2013-04-17 | 青岛歌尔声学科技有限公司 | NFC (Near Field Communication) antenna, manufacturing method thereof and NFC communication device |
| CN108875215A (en) * | 2018-06-20 | 2018-11-23 | 深圳市亿道数码技术有限公司 | PCB Layout is laid out to the method for changing into PCB 3D model |
| CN109193835A (en) * | 2018-09-13 | 2019-01-11 | 浙江省东阳市东磁诚基电子有限公司 | A kind of FPC loop construction of copper foil line width variation |
| CN112449260A (en) * | 2019-09-02 | 2021-03-05 | 华为技术有限公司 | Earphone set |
-
2013
- 2013-01-24 CN CN 201320040949 patent/CN203039106U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050779A (en) * | 2013-01-24 | 2013-04-17 | 青岛歌尔声学科技有限公司 | NFC (Near Field Communication) antenna, manufacturing method thereof and NFC communication device |
| CN103050779B (en) * | 2013-01-24 | 2015-10-28 | 青岛歌尔声学科技有限公司 | A kind of NFC antenna and manufacture method thereof and a kind of NFC communication equipment |
| CN108875215A (en) * | 2018-06-20 | 2018-11-23 | 深圳市亿道数码技术有限公司 | PCB Layout is laid out to the method for changing into PCB 3D model |
| CN109193835A (en) * | 2018-09-13 | 2019-01-11 | 浙江省东阳市东磁诚基电子有限公司 | A kind of FPC loop construction of copper foil line width variation |
| CN109193835B (en) * | 2018-09-13 | 2021-05-18 | 浙江省东阳市东磁诚基电子有限公司 | FPC coil structure with variable copper foil line width |
| CN112449260A (en) * | 2019-09-02 | 2021-03-05 | 华为技术有限公司 | Earphone set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20160124 |
|
| EXPY | Termination of patent right or utility model |