NFC antenna and comprise the intelligent apparatus of NFC antennaTechnical field
The present invention relates to NFC antenna design field, in particular it relates to NFC antenna and comprise the intelligent apparatus of NFC antenna,Especially comprise the Intelligent bracelet of NFC antenna.
Background technology
NFC English full name Near Field Communication, near field wireless telecommunications.It is to be sent out by PHILIPS Co.Rise, the well-known manufacturer such as Nokia, Sony combine the wireless technology promoted mainly.Fitted in by many companies, university and userLi Liao Pan European Union, it is intended to the open architecture of exploitation NFC, and promote its application in mobile phone.NFC is by non-contact radio-frequency(RFID) technology and the Technology Integration that interconnects develop, integrated induction formula card reader, vicarious card on single chipsWith point-to-point function, can be identified with various compatible equipments in short-range and data exchange.This technology is initialSimply RFID technique and the simple merging of data acquisition technology, developed and become a kind of short-distance wireless communication technology,Growth momentum is the rapidest.
Therefore, it is necessary to propose the NFC antenna of the Intelligent bracelet of a kind of applicable small space.
Summary of the invention
For defect of the prior art, it is an object of the invention to provide a kind of NFC antenna and the intelligence comprising NFC antennaDevice.
A kind of NFC antenna provided according to the present invention, including antenna cabling；
One end of antenna cabling constitutes a NFC feed point；
The other end of antenna cabling constitutes the 2nd NFC feed point；
Oneth NFC feed point, the 2nd NFC feed point are all centered around in the coil that antenna cabling is formed.
Preferably, including circuit board；
Antenna cabling forms closing coil loop by the way of circuit board back intersects wire jumper.
Preferably, the number of circuit board back intersection wire jumper is that coil turn subtracts one.
Preferably, antenna cabling is by a NFC feed point, first to enclose from inside to outside in the way of a NFC feed pointAround extension, then by ecto-entad in the way of a NFC feed point around extension, form the 2nd NFC feed point.
Preferably, including NFC chip；
Oneth NFC feed point, the 2nd NFC feed point connect two ports of NFC chip respectively.
Preferably, during NFC chip is centered around the coil that antenna cabling is formed.
A kind of intelligent apparatus containing NFC antenna provided according to the present invention, including intelligent apparatus housing, also includes above-mentionedNFC antenna, wherein, NFC antenna is arranged in intelligent apparatus housing.
Preferably, intelligent apparatus housing is bracelet.
Compared with prior art, the present invention has a following beneficial effect:
The cabling mode of coil of the present invention is different from tradition cabling mode, two feed point (NFC feedback of antenna cablingPoint, the 2nd NFC feed point) inside of whole coils that all surrounded at antenna cabling, can directly connection antenna with chip walkTwo ports of line are connected, and have greatly saved space, it is adaptable to the intelligence of narrow space on the premise of not reducing NFC performanceInside bracelet.Under situation is identical with environment, more preferable than conventional aerial in performance.
Accompanying drawing explanation
By the detailed description non-limiting example made with reference to the following drawings of reading, the further feature of the present invention,Purpose and advantage will become more apparent upon:
Fig. 1 is the structural representation of the NFC antenna of the present invention.
In figure:
101-the oneth NFC feed point
102-the 2nd NFC feed point
The antenna cabling in 2-circuit board front
3-circuit board back intersection wire jumper
4-NFC chip
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following example will assist in the technology of this areaPersonnel are further appreciated by the present invention, but limit the present invention the most in any form.It should be pointed out that, the ordinary skill to this areaFor personnel, without departing from the inventive concept of the premise, it is also possible to make some changes and improvements.These broadly fall into the present inventionProtection domain.
Below with reference to accompanying drawing, the detailed description of the invention of the present invention is described in detail.Then, the present invention can be with notSame form, specification etc. realize, and in these accompanying drawings, for clearly visible, may increase or reduce the number of turns, it is possible to zooming in or out relativelySize.
As it is shown in figure 1, the NFC antenna that the present invention provides is a kind of eight circle dual platen NFC antenna, nonmetal and portion can be appliedParting belongs under small space.Specifically, described NFC antenna, including antenna cabling, circuit board, NFC chip；The one of antenna cablingEnd constitutes a NFC feed point；The other end of antenna cabling constitutes the 2nd NFC feed point；Oneth NFC feed point, the 2nd NFC feed point all quiltsIt is centered around in the coil that antenna cabling is formed.Antenna cabling forms closing coil by the way of circuit board back intersects wire jumperLoop.The number of circuit board back intersection wire jumper is that coil turn subtracts one.Antenna cabling is by a NFC feed point, first to encloseAround the mode of a NFC feed point from inside to outside around extension, then by ecto-entad in the way of a NFC feed point around prolongingStretch, form the 2nd NFC feed point.Oneth NFC feed point, the 2nd NFC feed point connect two ports of NFC chip respectively.NFC chip quiltIt is centered around in the coil that antenna cabling is formed.Antenna cabling can be copper wires, and wherein, copper wires is formed in logicRectangle, square, circle and other is irregularly shaped.The number of turn of the copper coil that copper wires is constituted is multiturn.
A kind of intelligent apparatus containing NFC antenna provided according to the present invention, including intelligent apparatus housing, also includes above-mentionedNFC antenna, wherein, NFC antenna is arranged in intelligent apparatus housing.Intelligent apparatus housing is bracelet.
As it is shown in figure 1, be the eight linear formulas of ring back cross-cross skip, in actual application, the number of turns can be according to realitySituation goes to determine, can be four circles, five circle and other any number of turns, for relatively common NFC antenna, can substantially save skySpace of lines, improves antennainductance, can be effectively improved the utilization rate in magnetic field, promotes antenna performance.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentionedParticular implementation, those skilled in the art can make a variety of changes within the scope of the claims or revise, this not shadowRing the flesh and blood of the present invention.In the case of not conflicting, the feature in embodiments herein and embodiment can any phaseCombination mutually.