CN207116694U - Device based on electronic equipment rear shell radiation NFC signals - Google Patents
Device based on electronic equipment rear shell radiation NFC signals Download PDFInfo
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- CN207116694U CN207116694U CN201720719486.3U CN201720719486U CN207116694U CN 207116694 U CN207116694 U CN 207116694U CN 201720719486 U CN201720719486 U CN 201720719486U CN 207116694 U CN207116694 U CN 207116694U
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Abstract
The utility model provides a kind of device based on electronic equipment rear shell radiation NFC signals, including rear shell and NFC modules, wherein：The rear shell includes NFC radiant sections；NFC radiant sections are provided with void region；The edge of void region forms NFC antenna；The NFC modules are arranged on mainboard；The NFC antenna electrically connects NFC modules by rear shell and forms closed loop circuit.The utility model has the following advantages that：The utility model dexterously replaces NFC coils using mobile phone metal rear shell, forms a circle NFC antenna using gap and camera void region, reaches and directly utilize the purpose of electronic equipment rear shell radiation NFC performances；Cost is saved, greatly save mobile phone needs FPC and ferritic space originally, and has excellent NFC performances.
Description
Technical field
NFC near-field communications field is the utility model is related to, in particular it relates to a kind of based on electronic equipment rear shell radiation NFC
The device of signal, especially a kind of device possessed using electronic equipment rear shell radiation NFC performances.
Background technology
NFC technology includes card reader, icah wavw and point-to-point function, can in short distance with it is compatible
Equipment is identified and data exchange.Working frequency is 13.56MHz, but uses the user of this mobile-phone payment scheme necessary
Change special mobile phone.This technology is widely used in Japan and Korea S at present, the mobile phone with NFC may be used as airport boarding checking,
Gate inhibition's key of mansion, traffic all-purpose card, credit card, Payment Card etc., mobile phone implementation of the main flow with NFC is uses at present
FPC adds ferrite form, and the mobile phone of metallic profiles is relatively more, and FPC adds ferrite form to be unable to meet demand, therefore have must
It is proposed that the device of applying electronic equipment rear shell radiation NFC performances solves current problem, have originally using electronic equipment
Metal rear shell radiates NFC performances, it is not necessary to which FPC adds ferrite, reaches saving cost, the advantages of optimizing NFC performances.
Utility model content
For in the prior art the defects of, the purpose of this utility model is to provide a kind of to be radiated based on electronic equipment rear shell
The device of NFC signals.
According to it is provided by the utility model it is a kind of based on electronic equipment rear shell radiation NFC signals device, including rear shell and
NFC modules, wherein：The rear shell includes NFC radiant sections；NFC radiant sections are provided with void region；The edge of void region
Form NFC antenna；The NFC modules are arranged on mainboard；The NFC antenna electrically connects NFC modules by rear shell and forms closed loop
Circuit.
Preferably, the void region includes wire void region and ring-type void region, wherein：Wire void region by
The edge that ring-type void region extends to NFC radiant sections forms opening.
Preferably, the rear shell includes epimere rear shell, stage casing rear shell and hypomere rear shell, wherein：The epimere rear shell and
Stage casing rear shell is connected by the first rear shell junction；The stage casing rear shell is connected with hypomere rear shell by the second rear shell junction；
The NFC radiant sections are arranged in the rear shell of stage casing；NFC feed points are provided with the stage casing rear shell and return ground feed point, NFC feed points
With the both ends for returning ground feed point composition NFC antenna.
Preferably, the material of the stage casing rear shell is conductive material；The material of the epimere rear shell and hypomere rear shell includes
Conductive material or insulating materials.
Preferably, the NFC modules include NFC chip, filter circuit, balun device and resonance matching circuit, wherein：
NFC chip connects two inputs of filter circuit；Two inputs of two output ends connection balun device of filter circuit
Mouthful, filter circuit is also connected with the ground of mainboard；The ground of one of port connection mainboard of two output ports of balun device, separately
One end of outer a port connection resonance matching circuit；The other end of resonance matching circuit is connected in NFC feed points；Return ground feed point
Connect the ground of mainboard.
Preferably, the balun device includes impedance transformer.
Preferably, in addition to decoupling inductor, the other end of decoupling inductor one end connection resonance matching circuit are described to go
The coupling inductance other end is connected in NFC feed points.
Preferably, the NFC feed points connect NFC modules by mainboard cabling；Described time ground feed point is connected by mainboard cabling
Connect the ground of NFC modules.
Preferably, the ground of the ground of NFC modules and mainboard is the GND connected；
The mainboard cabling includes Layout cablings.
Preferably, NFC feed points and return ground feed point be arranged at stage casing rear shell top gap and camera void region two
Side, and NFC antenna is formed by the gap on stage casing rear shell top and camera void region.
Compared with prior art, the utility model has following beneficial effect：
1st, the utility model dexterously replaces NFC coils using mobile phone metal rear shell, utilizes gap and camera vacancy section
Domain forms a circle NFC antenna, reaches and directly utilizes the purpose of electronic equipment rear shell radiation NFC performances；
2nd, cost is saved, greatly save mobile phone needs FPC and ferritic space originally, and has excellent NFC
Energy.
Brief description of the drawings
By reading the detailed description made with reference to the following drawings to non-limiting example, other spies of the present utility model
Sign, objects and advantages will become more apparent upon：
Fig. 1 is the structural representation for the device that NFC signals are radiated based on electronic equipment rear shell；
Fig. 2 is the NFC modular circuit schematic diagrams for the device that NFC signals are radiated based on electronic equipment rear shell；
Fig. 3 is the circuit theory of the first change case of the NFC modules for the device that NFC signals are radiated based on electronic equipment rear shell
Figure；
Fig. 4 is the circuit theory of the second change case of the NFC modules for the device that NFC signals are radiated based on electronic equipment rear shell
Figure.
Shown in figure：
The mainboard 2 of rear shell 1
The NFC feed points 21 of epimere rear shell 11
Stage casing rear shell 12 returns ground feed point 22
The Layout cablings 23 of hypomere rear shell 13 the oneth
The Layout cablings 24 of gap 14 the 2nd
The NFC modules 25 of camera void region 15
The decoupling inductor 26 of isolation strip 16
First rear shell junction 17
Second rear shell junction 18
Embodiment
The utility model is described in detail with reference to specific embodiment.Following examples will be helpful to this area
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that to ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, some changes and improvements can also be made.
These belong to the scope of protection of the utility model.
As shown in figure 1, according to it is provided by the utility model it is a kind of based on electronic equipment rear shell radiate NFC signals device,
Including rear shell 1 and mainboard 2, rear shell 1 includes epimere rear shell 11, stage casing rear shell 12 and hypomere rear shell 13, and epimere rear shell 11 is with
Connected between section rear shell 12 by the first rear shell junction 17, stage casing rear shell 12 and hypomere rear shell 13 pass through the second rear shell junction
18 connections；The top of stage casing rear shell 12 is provided with gap 14 and camera void region 15, gap 14 and camera void region 15
Edge formed NFC antenna, NFC antenna be provided at both ends with NFC feed points 21 and return ground feed point 22；Mainboard 2 includes NFC modules
The both ends of 25, NFC modules 25 connect NFC feed points 21 by the first Layout cablings 23 and the 2nd Layout cablings 24 respectively and returned
Ground feed point 22.
Specifically, the line width of the first Layout cablings 23 and the 2nd Layout cablings 24 is more than 2mil.
Specifically, gap 14 is vertically arranged and connects the centre and isolation strip 16 at the top of camera void region 15, preferably
Ground, the height of isolation strip 16 is more than 0.2mm, less than 3mm；The width in gap 14 is more than 0.2mm, less than 3mm；Camera vacancy section
The size in domain 15 is bigger, and NFC performances are better.
Detailed, stage casing rear shell 12 is conductive material, and the material of epimere rear shell 11 and hypomere rear shell 13 includes conductive material
Or insulating materials；
NFC feed points 21 and time ground feed point 22 are shell fragment or Pogo pin forms；NFC feed points 21 and the position for returning ground feed point 22
Respectively close to the upper left quarter and upper right quarter of stage casing rear shell 12, the distance of NFC feed points 21 and time ground feed point 22 is more than 10nm.
As shown in Fig. 2 the NFC modules 25 include NFC chip, filter circuit, balun device and resonance matching circuit,
Wherein：Filter circuit includes two inductance L0 and two electric capacity C0, NFC chip connect two inductance L0 one end respectively；Two
The inductance L0 other end connects two electric capacity C0 one end, the ground of two electric capacity C0 other end connection mainboard respectively；Two electricity
Hold two ports of C0 one end connection balun device；One of port connection mainboard of two other port of balun device
Ground, another port connection resonance matching circuit electric capacity Cs one end；The electric capacity Cs other end passes through the first Layout
Cabling 23 is connected in NFC feed points 21, electric capacity Cs other end connection electric capacity Cp one end, electric capacity Cp other end connection mainboard
Ground；NFC feed points 21 connect back to ground feed point 22 using stage casing rear shell 12 as equivalent aerial, return ground feed point 22 and pass through the 2nd Layout
Cabling 24 connects the ground of NFC modules.Wherein：The ground of NFC modules connects with the ground of mainboard.
Further, the balun device includes impedance variations device, and the impedance variations device is 1:1 conversion.
As described in Figure 3, according to the first change case of NFC modules 25 provided by the utility model, decoupling inductor is also included
26, the electric capacity Cp of one end connection resonance matching circuit of decoupling inductor 26, the other end connection NFC feed points 21 of decoupling inductor 26.
As shown in figure 4, according to the second change case of NFC modules 25 provided by the utility model, the balun device inside
Filter circuit and resonance matching circuit are connected by the form of series connection.
Device based on electronic equipment rear shell radiation NFC signals can be mobile communications device, such as smart mobile phone, flat board
Computer, intelligent watch, Intelligent bracelet, intelligent glasses etc..
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims,
This has no effect on substantive content of the present utility model.In the case where not conflicting, the spy in embodiments herein and embodiment
Sign can be arbitrarily mutually combined.
Claims (10)
- A kind of 1. device based on electronic equipment rear shell radiation NFC signals, it is characterised in that including rear shell and NFC modules, its In：The rear shell includes NFC radiant sections；NFC radiant sections are provided with void region；The edge of void region is formed NFC days Line；The NFC modules are arranged on mainboard；The NFC antenna electrically connects NFC modules by rear shell and forms closed loop circuit.
- 2. the device according to claim 1 based on electronic equipment rear shell radiation NFC signals, it is characterised in that described to engrave Dummy section includes wire void region and ring-type void region, wherein：Wire void region extends to NFC by ring-type void region The edge of radiant section forms opening.
- 3. the device according to claim 1 based on electronic equipment rear shell radiation NFC signals, it is characterised in that after described Shell includes epimere rear shell, stage casing rear shell and hypomere rear shell, wherein：The epimere rear shell and stage casing rear shell are connected by the first rear shell Connect place's connection；The stage casing rear shell is connected with hypomere rear shell by the second rear shell junction；During the NFC radiant sections are arranged on In section rear shell；NFC feed points are provided with the stage casing rear shell and return ground feed point, NFC feed points and time ground feed point form NFC antenna Both ends.
- 4. the device according to claim 3 based on electronic equipment rear shell radiation NFC signals, it is characterised in that in described The material of section rear shell is conductive material；The material of the epimere rear shell and hypomere rear shell includes conductive material or insulating materials.
- 5. the device according to claim 3 based on electronic equipment rear shell radiation NFC signals, it is characterised in thatThe NFC modules include NFC chip, filter circuit, balun device and resonance matching circuit, wherein：NFC chip connects Two inputs of filter circuit；Two input ports of two output ends connection balun device of filter circuit, filter circuit It is also connected with the ground of mainboard；The ground of one of port connection mainboard of two output ports of balun device, another port Connect one end of resonance matching circuit；The other end of resonance matching circuit is connected in NFC feed points；Return ground feed point connection mainboard Ground.
- 6. the device according to claim 5 based on electronic equipment rear shell radiation NFC signals, it is characterised in that described bar Human relations device includes impedance transformer.
- 7. the device according to claim 5 based on electronic equipment rear shell radiation NFC signals, it is characterised in that also include Decoupling inductor, the other end of decoupling inductor one end connection resonance matching circuit, the decoupling inductor other end are connected to NFC In feed point.
- 8. the device according to claim 3 based on electronic equipment rear shell radiation NFC signals, it is characterised in that the NFC Feed point connects NFC modules by mainboard cabling；Described time ground feed point connects the ground of NFC modules by mainboard cabling.
- 9. the device according to claim 8 based on electronic equipment rear shell radiation NFC signals, it is characterised in that NFC modules The ground of ground and mainboard be the GND connected；The mainboard cabling includes Layout cablings.
- 10. the device according to claim 3 based on electronic equipment rear shell radiation NFC signals, it is characterised in that NFC is presented Point and time ground feed point are arranged at the gap on stage casing rear shell top and the both sides of camera void region, and pass through stage casing rear shell top Gap and camera void region formed NFC antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720719486.3U CN207116694U (en) | 2017-06-20 | 2017-06-20 | Device based on electronic equipment rear shell radiation NFC signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720719486.3U CN207116694U (en) | 2017-06-20 | 2017-06-20 | Device based on electronic equipment rear shell radiation NFC signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207116694U true CN207116694U (en) | 2018-03-16 |
Family
ID=61587805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720719486.3U Active CN207116694U (en) | 2017-06-20 | 2017-06-20 | Device based on electronic equipment rear shell radiation NFC signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207116694U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359411A (en) * | 2017-06-20 | 2017-11-17 | 上海德门电子科技有限公司 | Device based on electronic equipment rear shell radiation NFC signals |
| CN109462013A (en) * | 2018-11-14 | 2019-03-12 | 合肥泾渭信息通讯有限公司 | A kind of device based on electronic equipment rear shell radiation NFC signal |
-
2017
- 2017-06-20 CN CN201720719486.3U patent/CN207116694U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359411A (en) * | 2017-06-20 | 2017-11-17 | 上海德门电子科技有限公司 | Device based on electronic equipment rear shell radiation NFC signals |
| CN109462013A (en) * | 2018-11-14 | 2019-03-12 | 合肥泾渭信息通讯有限公司 | A kind of device based on electronic equipment rear shell radiation NFC signal |
| CN109462013B (en) * | 2018-11-14 | 2021-03-30 | 吉林吉大通信设计院股份有限公司 | Device based on electronic equipment backshell radiation NFC signal |
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