CN107546463A - NFC antenna under semi-closed metal slit environment - Google Patents
NFC antenna under semi-closed metal slit environment Download PDFInfo
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- CN107546463A CN107546463A CN201610494748.0A CN201610494748A CN107546463A CN 107546463 A CN107546463 A CN 107546463A CN 201610494748 A CN201610494748 A CN 201610494748A CN 107546463 A CN107546463 A CN 107546463A
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- gap
- nfc antenna
- back cover
- metal back
- metal
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- 239000002184 metal Substances 0.000 title claims abstract description 91
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 91
- 229910052755 nonmetal Inorganic materials 0.000 claims description 9
- 230000001788 irregular Effects 0.000 claims description 6
- 150000002843 nonmetals Chemical class 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 7
- 230000005672 electromagnetic field Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000003313 weakening effect Effects 0.000 abstract description 4
- 230000005855 radiation Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Waveguide Aerials (AREA)
- Support Of Aerials (AREA)
Abstract
The invention discloses the NFC antenna under semi-closed metal slit environment, belong to wireless communication technology field.The present invention includes metal back cover, NFC antenna and the through hole being arranged in metal back cover；The first gap and the second gap are offered in metal back cover, through hole is located at the downside in the first gap, and the second gap forms T-shaped gap vertically through the first gap of connection and through hole, the first gap and the second gap；NFC antenna is arranged at the madial wall of metal back cover, and surrounds through hole；The side in the first gap is provided with one section of close segments, and close segments connect with metal back cover.Pass through the first gap and the second gap opened up in metal back cover, so that the electromagnetic field of NFC antenna is gone out by gap radiation, one end close segments set simultaneously by the side in the first gap, gap can be avoided to produce reverse induced-current, weakening of the metal back cover to NFC antenna performance is avoided, so as to further increase performance of the NFC antenna in metal environment.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to NFC days under semi-closed metal slit environment
Line.
Background technology
NFC (Near Field Communication, wireless near field communication) is a kind of short-distance wireless communication skill
Art, traditional NFC antenna cover after being mainly covered on electronic product, but with the mobile phone of all-metal fuselage,
The prevalence of the consumer electronics products such as notebook, tablet personal computer, when NFC antenna be covered in metal material after
When covering, electromagnetic field caused by antenna can greatly be blocked by metal back cover, largely reducing NFC's
Performance, Consumer's Experience is bad, so needing to provide a kind of antenna structure of adaptation to reduce metallic object to NFC
The influence of antenna, make the performance of NFC antenna better.
The content of the invention
In order to reduce influence of the metallic object to NFC antenna, performance of the NFC antenna in metal environment is improved,
Consumer's Experience effect is improved, the embodiments of the invention provide the NFC antenna under semi-closed metal slit environment.
The inventive technique scheme is as follows：
First aspect, there is provided the NFC antenna under semi-closed metal slit environment, including：
Metal back cover, NFC antenna and the through hole being arranged in the metal back cover；
The first gap and the second gap are offered in the metal back cover, the through hole is located at first gap
Downside, second gap is vertically through connecting first gap and the through hole, first gap
T-shaped gap is formed with the second gap；
The NFC antenna is arranged at the madial wall of the metal back cover, and surrounds the through hole；
The side in first gap is provided with least one section of close segments, the close segments and the metal back cover
Connection.
Further, the NFC antenna under the semi-closed metal slit environment also includes：
Non-metal base plate, the non-metal base plate are fitted between the antenna and the metal back cover.
Further, the through hole and be arranged in the metal back cover shooting head bore, flash lamp aperture or touch
Identification sensor hole is touched to share.
Further, second gap width is 1.0-2.0mm, length 3.0-7.0mm.
Further, first gap is at left and right sides of the metal back cover, the close segments and nearside
Metal back cover edge distance be 0-5.0mm.
Further, the NFC antenna includes the aerial coil and two feed points of predetermined shape, the NFC
Antenna is connected by feed point with chip.
Further, the shape of the aerial coil includes rectangle, circle, triangle and irregular shape.
Further, the shape of the through hole includes rectangle, circle, triangle and irregular shape.
The embodiments of the invention provide the NFC antenna under semi-closed metal slit environment, the present invention includes metal
Back-cover, NFC antenna and the through hole being arranged in metal back cover；The first gap and are offered in metal back cover
Two gaps, through hole are located at the downside in the first gap, the second gap vertically through the first gap of connection and through hole,
First gap and the second gap form T-shaped gap；NFC antenna is arranged at the madial wall of metal back cover, and encloses
Around through hole；The side in the first gap is provided with one section of close segments, and close segments connect with metal back cover.Pass through gold
The first gap and the second gap opened up in category back-cover so that the electromagnetic field of antenna is gone out by gap radiation,
One end close segments set simultaneously by the side in the first gap, can avoid gap from producing reverse induced-current,
Weakening of the metal back cover to NFC antenna performance is avoided, so as to further increase NFC in metal environment
Performance.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, institute in being described below to embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the NFC antenna under semi-closed metal slit environment provided in an embodiment of the present invention
Figure；
Fig. 2 is the profile of metal back cover structure provided in an embodiment of the present invention in left-right direction；
Fig. 3-1 is the scale diagrams in the first gap and the second gap provided in an embodiment of the present invention；
Fig. 3-2 is semi-closed metal slit of the close segments provided in an embodiment of the present invention in the left side in the first gap
NFC antenna schematic diagram under environment；
Fig. 3-3 is the schematic diagram for having on the first gap provided in an embodiment of the present invention two close segments；
Fig. 4 is the current trend schematic diagram of NFC antenna and metal back cover provided in an embodiment of the present invention；
Fig. 5 is NFC antenna schematic diagram provided in an embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that retouched
The embodiment stated is only part of the embodiment of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
Embodiment one
The invention provides the NFC antenna under semi-closed metal slit environment, shown in reference picture 1, the semi-closure
The NFC antenna closed under metal slit environment includes：
Metal back cover 1, NFC antenna 2 and the through hole 3 being arranged in metal back cover；
The first gap 11 and the second gap 12 are offered in the metal back cover, through hole 3 is located at the first gap 11
Downside, the second gap 12 is vertically through the gap 11 of connection first and through hole 3, the first gap 11 and second
Gap 12 forms T-shaped gap；
NFC antenna 2 is arranged at the madial wall of metal back cover, and surrounds through hole 3；
The side in the first gap 11 is provided with least one section of close segments 111, and close segments connect with metal back cover.
Wherein, metal back cover can be electronic equipment bonnet, electronic equipment include but is not limited to smart mobile phone,
Tablet personal computer, electronic reader are with music player etc..
In addition, shown in reference picture 2, the NFC antenna under the semi-closed metal slit environment also includes：
Non-metal base plate 4, non-metal base plate 4 are fitted between antenna 2 and metal back cover.
In actual use, the thickness of the non-metal base plate is less than 0.1mm, and Fig. 2 is the metal shown in Fig. 1
The profile of back-cover structure in left-right direction；
The non-metal base plate can be such as foam or plastic parts etc..
By setting non-metal base plate between NFC antenna and metal back cover, the NFC antenna is enabled to
Electrical parameter is more preferable, so as to carry out the performance that a step improves the antenna.
In the present invention, the through hole 3 and be arranged in the metal back cover shooting head bore, flash lamp aperture or touch
Identification sensor hole is touched to share；In addition, through hole is gone back to can be also used for setting the logo consistent with shape of through holes
Figure, the embodiment of the present invention are not limited to the part for being specifically arranged on through hole.
The shape of the through hole includes rectangle, circle, triangle and irregular shape, and the embodiment of the present invention is to specific
The shape of through hole be not limited.
In the present invention, shown in reference picture 3-1, the width of the second gap 12 can be in actual applications
1.0-2.0mm length can be 3.0-7.0mm；First gap 11 across the left and right sides of metal back cover 1,
The distance at the edge of metal back cover 1 of close segments 111 and nearside can be 0-5.0mm, the length of the close segments
It is configured according to practical application；Distance of the upper edge in first gap apart from the upper edge of metal back cover can
Think 7.0mm or so.
Wherein, the minimum 1.5mm of the width in first gap, the metal back cover is divided into by the first gap
Top half and the latter half.
It should be noted that above-mentioned size range is preferable use range in actual use, size range
Can also specifically it be set according to the size of metal back cover, the present invention is not limited specific size range
It is fixed.
Wherein, the side in the first gap 11, which is provided with one section of close segments 111, includes close segments in the first gap 11
Left side or right side, shown in Fig. 1 is close segments 111 in the right side in the first gap 11, reference picture 3-2 institutes
Show, be that the NFC antenna under the semi-closed metal slit environment of close segments at the left side in the first gap 11 is shown
It is intended to.
Optionally, close segments can be multiple that as shown in shown in Fig. 3-3 is on the right side in first gap
There are two sections of close segments.
Exemplary, in reference picture 4 shown in a, when close segments are arranged on the right side in the first gap in figure, if
The sense of current is counterclockwise, electric current is full of metal back cover top half with by the close segments in antenna
Half part, then the electric current in metal back cover can refer to shown in figure；In reference picture 4 shown in b, closed in figure
When conjunction section is arranged on the left side in the first gap, if the sense of current is clockwise, electric current passes through this in antenna
Close segments are full of metal back cover top half and the latter half, then the electric current in metal back cover can refer in figure
It is shown.
By setting at least one section of close segments in the side in first gap, gap can be avoided to produce reverse sense
Induced current, to avoid weakening of the metal back cover to NFC antenna performance, NFC is improved so as to carry out a step
Performance of the antenna in metal environment, improves Consumer's Experience；In addition, by being set in the side in the first gap
At least one section of close segments are put, are enabled in the top half and the latter half that electric current passes through metal back cover, from
And it further enhancing the performance of NFC antenna.
In embodiments of the present invention, antenna 3 includes the aerial coil and two feed points of predetermined shape, NFC days
Line is connected by feed point with chip.
Wherein, the shape of the aerial coil includes rectangle, circle, triangle and irregular shape.
Wherein, NFC antenna 3 can also be other near-field communications, such as RFID (Radio Frequency
Identification, radio frequency identification) technology.
Shown in reference picture 5, the NFC antenna includes aerial coil 31 and two feed points 32, aerial coil 31
Winding wires by layers planar coil can be formed from outside to inside, aerial coil includes an at least circle coil；This is NFC days
Line is connected by the feed point 32 with NFC chip.
Exemplary, as shown in Figure 5, the length of the exterior loop of the NFC can be more than 35mm, it is wide can be with
More than 25mm.
During work, electric current is from a feed point input NFC antenna coil 31, through the another of coil to aerial coil
Individual feed point, loop checking installation electric current is formed in antennas.
It should be noted that the NFC antenna shown in Fig. 5 is exemplary, NFC antenna can also be
Other shapes and other winding modes are can also be, the present invention is not limited to specific NFC antenna.
The invention provides the NFC antenna under semi-closed metal slit environment, pass through what is opened up in metal back cover
First gap and the second gap so that the electromagnetic field of antenna is gone out by gap radiation, while passes through the first seam
One end close segments that the side of gap is set, gap can be avoided to produce reverse induced-current, avoid the metal back of the body
The weakening to NFC antenna performance is covered, so as to further increase performances of the NFC in metal environment.
Embodiment two
Present invention also offers a kind of electronic equipment, including the semi-closed metal slit ring described in embodiment one
NFC antenna under border, wherein, the antenna in NFC antenna under semi-closed metal slit environment is with matching electricity
Road is connected.
The electronic equipment includes but is not limited to smart mobile phone, tablet personal computer, electronic reader with music player
Deng the metal back cover can be the bonnet of the electronic equipment.
Wherein, the NFC antenna includes NFC antenna coil and two feed points, the NFC antenna pass through feed point
Be connected with NFC chip, the NFC antenna can also and circuit board communication.
Above-mentioned all optional technical schemes, any combination can be used to form the alternative embodiment of the present invention,
This is no longer repeated one by one.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all the present invention's
Within spirit and principle, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (8)
1. the NFC antenna under semi-closed metal slit environment, it is characterised in that including：
Metal back cover, NFC antenna and the through hole being arranged in the metal back cover；
The first gap and the second gap are offered in the metal back cover, the through hole is located at first gap
Downside, second gap is vertically through connecting first gap and the through hole, first gap
T-shaped gap is formed with the second gap；
The NFC antenna is arranged at the madial wall of the metal back cover, and surrounds the through hole；
The side in first gap is provided with least one section of close segments, the close segments and the metal back cover
Connection；
The metal back cover includes the bonnet of electronic equipment.
2. the NFC antenna under semi-closed metal slit environment according to claim 1, its feature exist
In the NFC antenna under the semi-closed metal slit environment also includes：
Non-metal base plate, the non-metal base plate are fitted between the antenna and the metal back cover.
3. the NFC antenna under semi-closed metal slit environment according to claim 2, its feature exist
In the through hole and shooting head bore being arranged in the metal back cover, flash lamp aperture or touch recognition sense
Device hole shares.
4. the NFC antenna under semi-closed metal slit environment according to claim 1, its feature exist
In second gap width is 1.0-2.0mm, length 3.0-7.0mm.
5. the NFC antenna under semi-closed metal slit environment according to claim 4, its feature exist
In first gap is at left and right sides of the metal back cover, the metal back cover of the close segments and nearside
The distance at edge is 0-5.0mm.
6. the NFC antenna under semi-closed metal slit environment according to claim 5, its feature exist
In the NFC antenna includes the aerial coil of predetermined shape and two feed points, the NFC antenna pass through feedback
Point is connected with chip.
7. the NFC antenna under semi-closed metal slit environment according to claim 6, its feature exist
In the shape of the aerial coil includes rectangle, circle, triangle and irregular shape.
8. the NFC antenna under semi-closed metal slit environment according to claim any one of 1-7, its
It is characterised by, the shape of the through hole includes rectangle, circle, triangle and irregular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610494748.0A CN107546463B (en) | 2016-06-29 | 2016-06-29 | NFC antenna in semi-closed metal gap environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610494748.0A CN107546463B (en) | 2016-06-29 | 2016-06-29 | NFC antenna in semi-closed metal gap environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107546463A true CN107546463A (en) | 2018-01-05 |
| CN107546463B CN107546463B (en) | 2024-04-02 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610494748.0A Active CN107546463B (en) | 2016-06-29 | 2016-06-29 | NFC antenna in semi-closed metal gap environment |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108769298A (en) * | 2018-03-28 | 2018-11-06 | 广东欧珀移动通信有限公司 | Electronic device |
| CN113708054A (en) * | 2020-05-20 | 2021-11-26 | 华为技术有限公司 | Electronic device |
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| CN113708054A (en) * | 2020-05-20 | 2021-11-26 | 华为技术有限公司 | Electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107546463B (en) | 2024-04-02 |
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