CN105119036A - Near-field communication and wireless charging integrated antenna based on metallic housing - Google Patents
Near-field communication and wireless charging integrated antenna based on metallic housing Download PDFInfo
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- CN105119036A CN105119036A CN201510593895.9A CN201510593895A CN105119036A CN 105119036 A CN105119036 A CN 105119036A CN 201510593895 A CN201510593895 A CN 201510593895A CN 105119036 A CN105119036 A CN 105119036A
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Abstract
The invention discloses a near-field communication and wireless charging integrated antenna based on a metallic housing. The integrated antenna comprises an NFC antenna coil and a WPC antenna coil installed on the inner sidewall of the metallic housing of a mobile terminal. Two through holes are disposed on the metallic housing. The NFC antenna coil is arranged around the outer side of one through hole. The WPC antenna coil is arranged around the outer side of the other through hole. The two through holes are connected through a first slit disposed on the metallic housing. A second slit is disposed on the edge of the metallic housing and is connected with any one of the through holes. Compared with a conventional NFC and WPC integrated antenna, the near-field communication and wireless charging integrated antenna is provided with the second slit on the metallic housing and connects the through holes on the metallic housing with the edge of the metallic housing by means of the second slit, thereby effectively changing eddy current distribution on the metallic housing and improving the performance of the antenna while eliminating a shielding effect of the metallic housing on the antenna.
Description
Technical field:
The present invention relates to antenna technical field, being specifically related to the near-field communication on the mobile terminals such as a kind of mobile phone for having metal back cover and wireless charging integral antenna.
Background technology:
Antenna is a kind of device utilizing frequency characteristic to receive and transmit.In recent years, along with the development of wireless terminal and mechanics of communication, wireless near field communication (NearFieldCommunication, NFC, operating frequency 13.56MHz) and wireless charging technology is (such as, the Qi standard of wireless charging alliance (WPC), operating frequency is 100-200MHz), the mobile terminals such as mobile phone are widely used.
NFC technique starts from RFID tag (RadioFrequencyIdentifyDetection) technology, and namely combining induction card reader and induction type card on one chip, realize point-to-point data exchanging function.NFC chip is contained on the mobile terminals such as mobile phone, can realize the function of doit electronic payment and Intelligent Recognition and transfer of data.
Along with the designer trends that the mobile terminals such as mobile phone are light, thin, the application of NFC and WPC more and more comes into one's own.And the design that WPC antenna and NFC antenna use on mobile phone is at present: NFC antenna and WPC antenna are coiled into concentric circles to be placed on above battery or metallic plate, and adds that between aerial coil and battery ferrite is to obtain good antenna performance.
But this design is for the mobile device with metal back cover, then there is larger difficulty.If because NFC antenna and WPC antenna are placed directly in inside metal shell, metal back cover not only can produce the eddy current completely reverse with antenna current, and metal back cover also can shield antenna completely, aerial signal therefore can be made cannot to be detected in the outside of metal back cover.
For solving the problem, US Patent No. 20150130979A1 proposes the integral antenna design of a kind of NFC and WPC with metal back cover, NFC and WPC aerial coil, by opening the through hole of a diameter very large (about about the 35mm of diameter) on metal back cover, is included in this through hole by it.But this design has so large through hole on metal back cover will weaken the practicality of this design greatly.
Summary of the invention:
For this reason, the object of the present invention is to provide a kind of simple and practical, NFC and WPC integral antenna of being applicable to band metal back cover mobile device.
For achieving the above object, the present invention mainly adopts following technical scheme:
The invention provides a kind of near-field communication based on metal back cover and wireless charging integral antenna, comprise the NFC antenna coil and WPC aerial coil that are arranged on mobile terminal metal back cover madial wall, described metal back cover is provided with two through holes, described NFC antenna coil is compassingly set at the outside of a through hole, described WPC aerial coil is compassingly set at the outside of another through hole, connected by the first gap be opened on metal back cover between described two through holes, and have second gap connecting any one through hole in the edge of metal back cover.
Further, described through hole is rectangle, circle or oval, and described NFC antenna coil is corresponding identical with the shape of through hole with WPC aerial coil.
Present invention also offers a kind of near-field communication based on metal back cover and wireless charging integral antenna, comprise the NFC antenna coil and WPC aerial coil that are arranged on mobile terminal metal back cover madial wall, described metal back cover is provided with two through holes, described NFC antenna coil is compassingly set at the outside of any one through hole, described WPC aerial coil is compassingly set at the outside of NFC antenna coil, connected by the first gap be opened on metal back cover between described two through holes, and have second gap connecting arbitrary through hole in the edge of metal back cover.
Present invention also offers a kind of near-field communication based on metal back cover and wireless charging integral antenna, comprise the NFC antenna coil and WPC aerial coil that are arranged on mobile terminal metal back cover madial wall, described metal back cover is provided with two through holes, described WPC aerial coil is compassingly set at the outside of any one through hole, described NFC antenna coil is compassingly set at the outside of WPC aerial coil, connected by the first gap be opened on metal back cover between described two through holes, and have second gap connecting arbitrary through hole in the edge of metal back cover.
Present invention also offers a kind of near-field communication based on metal back cover and wireless charging integral antenna, comprise the NFC antenna coil and WPC aerial coil that are arranged on mobile terminal metal back cover madial wall, described metal back cover is provided with a through hole, described NFC antenna coil is compassingly set at the outside of described through hole, described WPC aerial coil is compassingly set at the outside of described NFC antenna coil, and has a gap connecting described through hole in the edge of metal back cover.
Further, described WPC aerial coil is provided with the projection that exposes to metal back cover, and described gap is positioned at this projection.
Further, described metal back cover is made up of the first metal back cover and the second metal back cover, and described through hole is arranged on the second metal back cover, described WPC aerial coil is provided with one and is positioned at projection on the first metal back cover, and described gap is positioned at this projection.
Present invention also offers a kind of near-field communication based on metal back cover and wireless charging integral antenna, comprise the NFC antenna coil and WPC aerial coil that are arranged on mobile terminal metal back cover madial wall, described metal back cover is provided with a through hole, described WPC aerial coil is compassingly set at the outside of described through hole, described NFC antenna coil is compassingly set at the outside of described WPC aerial coil, and has a gap connecting described through hole in the edge of metal back cover.
Further, described NFC antenna coil is provided with the projection that exposes to metal back cover, and described gap is positioned at this projection.
Further, described metal back cover is made up of the first metal back cover and the second metal back cover, and described through hole is arranged on the second metal back cover, described NFC antenna coil is provided with one and is positioned at projection on the first metal back cover, and described gap is positioned at this projection.
As compared to traditional NFC with WPC integral antenna, the present invention by opening a gap on metal back cover, and utilize this gap that the through hole on metal back cover is connected with metal back cover edge, effectively change the Eddy Distribution on metal back cover, while elimination metal back cover is to radome effect, also enhances the performance of antenna.The present invention hole of opening on metal back cover can be used for installing camera, photoflash lamp or fingerprint Identification sensor etc., it can not destroy the attractive in appearance of metal back cover itself, and NFC and the WPC integral antenna being arranged at metal back cover madial wall effectively can be dispelled the heat by metal back cover when WPC works, and then weaken in wireless charging process by the temperature overheating problem of charging device.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of NFC and WPC integral antenna when metal back cover of the present invention being provided with doubled via;
Fig. 2 is antenna current distribution when not cracking gap and the Eddy Distribution figure on metal back cover;
Fig. 3 is be antenna current distribution during WPC Antenna Operation and the Eddy Distribution figure on metal back cover below the present invention;
Fig. 4 is the Distribution of Magnetic Field figure for WPC antenna 5mm place outside metal back cover below the present invention;
Fig. 5 is be antenna current distribution when NFC antenna works and the Eddy Distribution figure on metal back cover above the present invention;
Fig. 6 is be NFC antenna 25mm place Distribution of Magnetic Field figure outside metal back cover above the present invention;
Fig. 7 is NFC and WPC concentric structure schematic diagram when metal back cover of the present invention being provided with doubled via;
When Fig. 8 is single-pass hole of the present invention, NFC or WPC is provided with concentric structure schematic diagram protruding outside metal back cover;
Fig. 9 is the antenna current in Fig. 8 situation and the Eddy Distribution figure on metal back cover;
When Figure 10 is the WPC Antenna Operation in Fig. 8 situation outside metal back cover 5mm place Distribution of Magnetic Field figure;
When Figure 11 is WPC Antenna Operation in Fig. 8 situation outside metal back cover 25mm place Distribution of Magnetic Field figure;
When Figure 12 is single-pass hole of the present invention, NFC or WPC is provided with the concentric structure schematic diagram in metal back cover internal projection;
NFC and WPC concentric structure schematic diagram when Figure 13 is single-pass hole of the present invention;
NFC and WPC when Figure 14 is single-pass hole of the present invention and containing the concentric structure schematic diagram of upper metal back cover.
Identifier declaration in figure: metal back cover 1, first metal back cover 101, second metal back cover 102, through hole 2, through hole 3, NFC antenna coil 4, WPC aerial coil 5, projection 501, gap 6, gap 7.
Embodiment:
For setting forth thought of the present invention and object, below in conjunction with the drawings and specific embodiments, the present invention is described further.
There is for tradition the mobile terminal of metal back cover, because of when using NFC antenna and WPC antenna, owing to metal back cover can produce the eddy current completely reverse with antenna current, and metal back cover can shield antenna completely, cause the problem that aerial signal cannot be detected in the outside of metal back cover.The present invention mainly through opening a gap on metal back cover, and utilize this gap that the through hole on metal back cover is connected with metal back cover edge, effectively change the Eddy Distribution on metal back cover, while elimination metal back cover is to radome effect, also enhances the performance of antenna.Especially, metal back cover arranges two through holes, be also connected with gap between two through holes.Due to the existence in gap between two through holes, make NFC and WPC aerial coil detour respectively a through hole integral antenna design become possibility.
Embodiment one
As shown in Figure 1, Fig. 1 is the structural representation of NFC and WPC integral antenna when metal back cover of the present invention being provided with doubled via.The present embodiment comprises the metal back cover 1 of mobile terminal, metal back cover 1 is provided with through hole 2 and through hole 3, wherein connected by gap 6 between through hole 2 and through hole 3, and have a gap 7 in the edge of metal back cover 1, this gap 7 is connected with the through hole 3 closest to metal back cover edge.
The shape of through hole 2 and through hole 3 can be rectangle, circle, ellipse and other arbitrary shapes, in the outside of through hole 2 around being provided with NFC antenna coil 4, in the outside of through hole 3 around being provided with WPC aerial coil 5, and NFC antenna coil is here corresponding identical with the shape of through hole with WPC aerial coil.
Similarly, the outside of through hole 2 also can around being provided with WPC aerial coil, and now corresponding to being provided with NFC antenna coil in the outside of through hole 3.
It should be noted that, the through hole opened in the present embodiment, corresponding diameter is less, and its correspondence can be used for installing camera, photoflash lamp and fingerprint recognition or other transducer, and it can not destroy the aesthetic feeling of whole metal back cover from outside.
The present embodiment offers the gap 7 that starts from metal back cover 1 edge, this gap 7 can any one in connecting through hole 2 and through hole 3, and as optimum scheme: gap 7 is connected with the through hole 3 near metal back cover edge, is connected between through hole 2 and through hole 3 by gap 6.Thus reach and not only change Eddy Distribution but also eliminate metal back cover to the object of radome effect simultaneously.Therefore, even if NFC and WPC antenna is the inner side being placed on metal back cover, also can measure or detect the signal of antenna in the outside of metal back cover.
The present embodiment is by comparing metal back cover being offered apertured situation and the situation not offering gap explanation below.
As shown in Figure 2, Fig. 2 is antenna current distribution when not cracking gap and the Eddy Distribution figure on metal back cover.In Fig. 2, metal back cover does not have gap, when in the NFC antenna be placed on two through holes and WPC antenna one of work time, the Eddy Distribution figure on the electric current of this antenna and metal.As can be seen from the figure, when described gap does not exist, the eddy current that metal back cover produces all sense of current with antenna own is contrary.Owing to not having above-mentioned opened gap on a metal plate, metal back cover is to antenna by shielded effect, and therefore aerial signal cannot be detected in the outside of metal back cover.In other words, antenna cannot normally work in this case.
As shown in Figure 3, Fig. 3 is be antenna current distribution map during WPC Antenna Operation below the present invention.After metal back cover has opened gap in figure 3, when being positioned at the WPC Antenna Operation of below, the electric current of WPC antenna is counterclockwise, as can be seen from the figure the effect in gap is the circulating direction stoping or be breaking at eddy current contrary with the aerial coil sense of current when not cracking gap, and then the direction changing eddy current makes this eddy current become effective eddy current aerial coil being had to positive effect, the shielding action of metal back cover to NFC and WPC antenna is also eliminated simultaneously.
In addition, the antenna of work is positioned at the through hole of below, so the Eddy Distribution on metal back cover is centered by intimate following square tube hole, the eddy current direction of metal back cover lower part is identical with the WPC antenna current direction of work; So for WPC antenna, metal back cover serves the effect strengthening WPC antenna performance.Therefore metal back cover now can be regarded as booster or the amplifier of WPC antenna,
In addition, the eddy current that each junior unit of metal back cover produces is in the same way, and the magnetic flux that this eddy current loop produces is identical with the flow direction that WPC antenna produces.On the contrary, if gap only exists between through hole, so at upper and lower two parts of metal back cover, generation is flowed to different eddy current loops (two peaks that Distribution of Magnetic Field now will have direction different).Because only have the eddy current loop identical with antenna current direction just to have the effect of amplifying or strengthening to antenna, therefore our WPC antenna structure energy of the present invention 100% ground utilizes the eddy current loop on metal back cover, also namely utilizes metal back cover to the amplification of antenna substantially.If further, the gap 7 only reaching metal edge from top through hole 3 exists and non-existent words in gap 6 between through hole, the antenna being so placed on the below through hole 2 that detours cannot normally work.
Fig. 4 is the Distribution of Magnetic Field figure for WPC antenna 5mm place outside metal back cover below the present invention.
The Distribution of Magnetic Field of WPC antenna only has a peak as can be seen from the figure.There is a peak and illustrate that this antenna system only has a pattern; The benefit only with a single-mode is that the magnetic field intensity of this pattern is stronger than the situation of two patterns, and also namely the antenna of single-mode has better performance.In addition, it is worth emphasizing that, this design not only makes the WPC antenna be positioned at below metal back cover well to be detected, ensures good efficiency of transmission, and the metal back cover having a larger area will have good heat dispersion as the design of an antenna part.And then solve and heat up too high in WPC antenna energy transmitting procedure and burn out the device of device interior non-refractory or the problem of module.
As shown in Figure 5, Figure 6, Fig. 5 is be antenna current distribution when NFC antenna works and the Eddy Distribution figure on metal back cover above the present invention.As can be seen from Figure 5, because the antenna now worked is positioned at the through hole of top, so the Eddy Distribution on metal back cover is centered by intimate above square tube hole.In addition, similar to above-mentioned WPC antenna, the eddy current that each junior unit of metal back cover produces is in the same way, and the magnetic flux that this eddy current loop produces is identical with the flow direction that NFC antenna produces.Therefore our NFC antenna structure energy of the present invention 100% ground utilizes the eddy current loop on metal back cover, also namely make use of the amplification of metal back cover to antenna substantially.The Distribution of Magnetic Field figure of the NFC antenna at Z=25mm place outside distance metal back cover of magnetic field shown in Fig. 6.The Distribution of Magnetic Field of NFC antenna also only has a peak as can be seen from the figure, is also a pattern.
Embodiment two
As shown in Figure 7, Fig. 7 is NFC and WPC concentric structure schematic diagram when metal back cover of the present invention being provided with doubled via.In the present embodiment, metal back cover 1 is provided with two through holes (through hole 2 and through hole 3), WPC aerial coil 5 is compassingly set at the outside of through hole 2, NFC antenna coil 4 is compassingly set at the outside of WPC aerial coil 5, connected by the gap 6 be opened on metal back cover 1 between through hole 2 and through hole 3, have a gap 7 in the edge of metal back cover 1, this gap 7 is connected with the through hole 3 closest to metal back cover edge.
The present embodiment, on the basis of above-described embodiment, only utilizes a through hole 2, makes WPC aerial coil and NFC antenna coil to form concentric structure.Under this structure, the Eddy Distribution during work of WPC aerial coil on metal back cover is close to centered by through hole 2, and the eddy current direction of the lower part of metal back cover 1 is identical with the WPC antenna current direction of work; So for WPC antenna, metal back cover serves the effect strengthening WPC antenna performance.Therefore metal back cover now can be regarded as booster or the amplifier of WPC antenna.And during NFC antenna coil working, similar to WPC antenna, the eddy current that each junior unit of metal back cover produces is in the same way, and the magnetic flux that this eddy current loop produces is identical with the flow direction that NFC antenna produces.Therefore NFC antenna structure energy 100% ground utilizes the eddy current loop on metal back cover, also namely make use of the amplification of metal back cover to antenna substantially.
Similarly, WPC aerial coil also can around the outside being arranged on NFC antenna coil, and its operation principle is same as described above.
Embodiment three
As shown in Figure 8, when Fig. 8 is single-pass hole of the present invention, NFC or WPC is provided with concentric structure schematic diagram protruding outside metal back cover.Metal back cover 1 is provided with a through hole 3 in the present embodiment, described NFC antenna coil 4 is compassingly set at the outside of described through hole 3, described WPC aerial coil 5 is compassingly set at the outside of described NFC antenna coil 4, and has a gap 7 connecting described through hole 3 in the edge of metal back cover 1.Wherein said WPC aerial coil 5 is provided with the projection 501 that exposes to metal back cover 1, and described gap 3 is positioned at this projection 501.
Wherein it should be noted that, the NFC antenna coil 4 being positioned at inner ring can exchange with the position of the WPC aerial coil 5 being positioned at outer ring.Can normally work (also namely antenna can be detected in the outside of metal back cover) in order to ensure antenna system, through hole 3 is equally also connected with the edge of gap 7 with metal back cover 1.
The WPC aerial coil 5 being positioned at outer ring in the present embodiment is arranged protruding 501 not crossing with cracked gap 7.The projection 501 adopted can increase magnetic field and be accepted or the effective width of detection place, and then strengthens communication distance and the performance of antenna.
As shown in Figure 9, Fig. 9 is the antenna current in Fig. 8 situation and the Eddy Distribution figure on metal back cover.Eddy Distribution on metal back cover 1 is close to centered by this through hole 3.The eddy current direction of the lower part of metal back cover 1 is identical with the WPC/NFC antenna current direction of work; Therefore, for WPC/NFC antenna system, metal back cover serves the effect strengthening this antenna system performance.
As shown in Figure 10,11, when Figure 10 is the WPC Antenna Operation in Fig. 8 situation outside metal back cover 5mm place Distribution of Magnetic Field figure; When Figure 11 is WPC Antenna Operation in Fig. 8 situation outside metal back cover 25mm place Distribution of Magnetic Field figure.As we know from the figure, adopt the antenna system that this bulge-structure designs, WPC and NFC antenna operationally, all will have good antenna performance.
Embodiment four
As shown in figure 12, when Figure 12 is single-pass hole of the present invention, NFC or WPC is provided with the concentric structure schematic diagram in metal back cover internal projection.The present embodiment is the modified node method carried out on the basis of embodiment three, it is by being divided into the first metal back cover 101 and the second metal back cover 102 by metal back cover 1, and through hole 3 is arranged on the second metal back cover 102, WPC aerial coil 5 is provided with a projection 501 be positioned on the first metal back cover 101, and described gap 7 is positioned at this projection 501.
Embodiment five
As shown in figure 13, the schematic diagram of NFC and WPC concentric structure when Figure 13 is single-pass hole of the present invention.The present embodiment is the improvement carried out on the basis of embodiment two, and it eliminates a through hole in enforcement two, adopts a through hole.Metal back cover 1 is provided with a through hole 3, described WPC aerial coil 5 is compassingly set at the outside of described through hole, described NFC antenna coil 4 is compassingly set at the outside of described WPC aerial coil 5, and has a gap 7 connecting described through hole 3 in the edge of metal back cover 1.
Embodiment six
As shown in figure 14, NFC and WPC concentric structure schematic diagram when Figure 14 is single-pass hole of the present invention.The present embodiment is the modified node method carried out on embodiment five basis, it is by being divided into the first metal back cover 101 and the second metal back cover 102 by metal back cover 1, and through hole 3 is arranged on the second metal back cover 102, WPC aerial coil 5 is compassingly set at the outside of the second metal back cover 102, and NFC antenna coil 4 is around the outside being arranged on WPC aerial coil 5.
It is emphasized that the antenna effects that the present invention arranges doubled via on metal back cover is better than the effect arranging single through hole on metal back cover.When the WPC of doubled via and NFC antenna coil detour upper and lower two through holes respectively, due to the physical distance existed between two through holes, so the mutual interference between two antennas can be caused less, when inventive embodiments one, the mutual interference between WPC and NFC antenna is negligible.
In summary, the present invention by offering a gap on mobile terminal metal back cover, and utilizes this gap dexterously the through hole on metal back cover and through hole to be connected with metal edge, thus effectively changes the Eddy Distribution on metal back cover; Therefore the present invention also enhances the performance of antenna while elimination metal back cover is to radome effect.As compared to traditional NFC with WPC integral antenna, the present invention only needs to offer less through hole on metal back cover, and described through hole can be used for installing the modules such as camera, photoflash lamp, fingerprint Identification sensor, therefore the present invention can not destroy the overall aesthetic of metal back cover, while which ensure that metal back cover practicality, take into account its cosmetic requirements.In addition, the present invention also also solves heat dissipation problem in WPC Antenna Operation process to a certain extent.
More than that the near-field communication based on metal back cover provided by the present invention and wireless charging integral antenna are described in detail, apply specific case herein to set forth structural principle of the present invention and execution mode, above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. the near-field communication based on metal back cover and wireless charging integral antenna, comprise the NFC antenna coil and WPC aerial coil that are arranged on mobile terminal metal back cover madial wall, it is characterized in that, described metal back cover is provided with two through holes, described NFC antenna coil is compassingly set at the outside of a through hole, described WPC aerial coil is compassingly set at the outside of another through hole, connected by the first gap be opened on metal back cover between described two through holes, and have second gap connecting any one through hole in the edge of metal back cover.
2., as claimed in claim 1 based on near-field communication and the wireless charging integral antenna of metal back cover, it is characterized in that, described through hole is rectangle, circle or oval, and described NFC antenna coil is corresponding identical with the shape of through hole with WPC aerial coil.
3. the near-field communication based on metal back cover and wireless charging integral antenna, comprise the NFC antenna coil and WPC aerial coil that are arranged on mobile terminal metal back cover madial wall, it is characterized in that, described metal back cover is provided with two through holes, described NFC antenna coil is compassingly set at the outside of any one through hole, described WPC aerial coil is compassingly set at the outside of NFC antenna coil, connected by the first gap be opened on metal back cover between described two through holes, and have second gap connecting arbitrary through hole in the edge of metal back cover.
4. the near-field communication based on metal back cover and wireless charging integral antenna, comprise the NFC antenna coil and WPC aerial coil that are arranged on mobile terminal metal back cover madial wall, it is characterized in that, described metal back cover is provided with two through holes, described WPC aerial coil is compassingly set at the outside of any one through hole, described NFC antenna coil is compassingly set at the outside of WPC aerial coil, connected by the first gap be opened on metal back cover between described two through holes, and have second gap connecting arbitrary through hole in the edge of metal back cover.
5. the near-field communication based on metal back cover and wireless charging integral antenna, comprise the NFC antenna coil and WPC aerial coil that are arranged on mobile terminal metal back cover madial wall, it is characterized in that, described metal back cover is provided with a through hole, described NFC antenna coil is compassingly set at the outside of described through hole, described WPC aerial coil is compassingly set at the outside of described NFC antenna coil, and has a gap connecting described through hole in the edge of metal back cover.
6., as claimed in claim 5 based on near-field communication and the wireless charging integral antenna of metal back cover, it is characterized in that, described WPC aerial coil is provided with the projection that exposes to metal back cover, and described gap is positioned at this projection.
7. as claimed in claim 5 based on near-field communication and the wireless charging integral antenna of metal back cover, it is characterized in that, described metal back cover is made up of the first metal back cover and the second metal back cover, described through hole is arranged on the second metal back cover, described WPC aerial coil is provided with one and is positioned at projection on the first metal back cover, and described gap is positioned at this projection.
8. the near-field communication based on metal back cover and wireless charging integral antenna, comprise the NFC antenna coil and WPC aerial coil that are arranged on mobile terminal metal back cover madial wall, it is characterized in that, described metal back cover is provided with a through hole, described WPC aerial coil is compassingly set at the outside of described through hole, described NFC antenna coil is compassingly set at the outside of described WPC aerial coil, and has a gap connecting described through hole in the edge of metal back cover.
9., as claimed in claim 8 based on near-field communication and the wireless charging integral antenna of metal back cover, it is characterized in that, described NFC antenna coil is provided with the projection that exposes to metal back cover, and described gap is positioned at this projection.
10. as claimed in claim 8 based on near-field communication and the wireless charging integral antenna of metal back cover, it is characterized in that, described metal back cover is made up of the first metal back cover and the second metal back cover, described through hole is arranged on the second metal back cover, described NFC antenna coil is provided with one and is positioned at projection on the first metal back cover, and described gap is positioned at this projection.
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