Dual platen parallel connection cabling form NFC antennaTechnical field
The present invention relates to NFC antenna design field, in particular it relates to dual platen parallel connection cabling form 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.
The NFC antenna cabling form of current main flow is single-ended dual platen, but the structure of existing terminal unit is more and more tighterGather, to the compression the most greatly of the space of antenna, meanwhile, the rise of metal shell, therefore, it is necessary to propose a kind of better performanceParallel connection walk the NFC antenna of wire type.
Summary of the invention
For defect of the prior art, it is an object of the invention to provide a kind of dual platen parallel connection cabling form NFC antenna,With the terminal environments that reply is the most severe.
A kind of dual platen parallel connection cabling form NFC antenna provided according to the present invention, including circuit board and be arranged on circuitAntenna cabling on plate, antenna cabling includes a point cabling；
Many points of cablings in parallel constitute part or all of antenna cabling.
Preferably, antenna cabling includes that main cabling, a point cabling in parallel are formed by main cabling bifurcated.
Preferably, between main cabling, point cabling in parallel connects.
Preferably, the discontinuous multistage of antenna cabling is respectively formed with point cabling that different group is in parallel.
Preferably, in point cabling in parallel, all point cabling is respectively positioned on the one side of circuit board.
Preferably, in point cabling in parallel, part cabling is positioned at the one side of circuit board, and another part cabling is positioned at circuitThe another side of plate.
Compared with prior art, the present invention has a following beneficial effect:
The form of NFC antenna cabling is modified to dual platen parallel connection type antenna cabling by the present invention, relatively common NFC antenna andSpeech, can substantially reduce antenna impedance, reduces current loss, can be effectively improved the utilization rate in magnetic field, promotes antenna 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 three circle dual platen parallel connection cabling form NFC antenna.The direction of arrow in Fig. 1 represents electricityFlow path direction.
Fig. 2 is the structural representation that part bifurcated forms the NFC antenna of parallel connection.
Fig. 3 is the structural representation in the NFC antenna front carrying out cabling in parallel on the two sides of flexible PCB FPC.
Fig. 4 is the structural representation at the NFC antenna back side carrying out cabling in parallel on the two sides of flexible PCB FPC.
Fig. 5 is the structural representation after Fig. 1 hides arrow.
In Fig. 1:
At the one of 1-antenna cabling and tie-point
At another of 2-antenna cabling and tie-point
In 3-antenna cabling at the one of one section of cabling and tie-point
In 4-antenna cabling at the one of another section of cabling and tie-point
In 5-antenna cabling one section of cabling another at and tie-point
In 6-antenna cabling another section of cabling another at and tie-point
The main cabling of 7-
First point of cabling of 8-
Second point of cabling of 9-
One feed point of 10-antenna
Another feed point of 11-antenna
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.
The NFC antenna cabling form of current main flow is single-ended dual platen, and the form of NFC antenna cabling is improved by the present inventionBecome the antenna of dual platen parallel connection cabling form, can be under little space, the most a plurality of cabling, in the feelings not increasing lossIt is effectively improved magnetic field utilization rate under condition and increases performance.
The cabling mode of the coil of inventive antenna is that many cablings are connected to form parallel closed loop structure, plane with parallel wayAntenna at least two walk line parallel closing structure, the cabling in parallel in whole NFC antenna can be whole antenna whole walkLine, it is also possible to be the part cabling of antenna, can design according to antenna place environment.Use dual platen parallel connection cabling form NFCAntenna, can effectively increase the magnetic field utilization rate of NFC antenna, can realize preferably NFC performance under less area,Antenna part is covered by metal or covers state without metal and is all obviously improved NFC performance, and this antenna form can be to use PCBOr the circuit board material design of FPC etc., compared with traditional cabling, there is good outward appearance, be effectively increased again the radio frequency of antennaPerformance.
As it is shown in figure 1, a kind of dual platen parallel connection cabling form NFC antenna that the present invention provides, including three circle cablings；WalkingOn a section of line, a main cabling 7 it is branched into two in parallel first point cablings 8 and second point of cabling 9, by main cabling 7 pointsThe quantity of point cabling in parallel pitched can be two, it is also possible to is any amount more than two, such as three, four,Five.Fig. 1 show three ring parallel connection dual platen coiling forms, and in actual application, the number of turns of cabling can be according to realityBorder situation respective change, can be four circles, five circle and other any number of turns, owing to the parallel connection of this three circles or more number of turns setsMeter, for relatively common NFC antenna, can substantially reduce antenna impedance, reduce current loss, can be effectively improved the utilization in magnetic fieldRate, promotes antenna performance.
As it is shown in figure 1, antenna cabling has one section of bifurcated to be point cabling in parallel；As in figure 2 it is shown, antenna cabling can also beDiscontinuous multistage upper bifurcation is point cabling that many groups are in parallel.Fig. 2 showing, two sections of upper bifurcations at antenna cabling are differenceTwo groups of point cablings in parallel, antenna cabling bifurcated is that the hop count of point cabling in parallel can be more according to actual needs.
As shown in Figure 3, Figure 4, point cabling in parallel of antenna cabling can be carried out on the two sides of flexible PCB FPC simultaneouslyCabling in parallel, is connected by copper guide hole.One section of upper bifurcation at antenna cabling is four point cablings in parallel, two thereinDividing cabling to be positioned at the one side of flexible PCB, another two pieces points of cablings therein are positioned at the another side of flexible PCB.
Use the dual platen parallel connection cabling form NFC antenna that the above present invention provides, it is possible to use the electronics at band NFC setsStandby upper, electronic equipment can be mobile terminal or automatic vending machine etc., and mobile terminal can be smart mobile phone or flat board electricityBrains etc., antenna cabling is connected with terminal NFC driving chip circuit by first feed point the 10, second feed point 11.And can be applicable toUnder metal environment and nonmetal environment, more severe at environment, antenna area is less, can be effectively improved NFC 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.