CN202617103U - NFC module and mobile terminal applying same - Google Patents
NFC module and mobile terminal applying same Download PDFInfo
- Publication number
- CN202617103U CN202617103U CN 201220155351 CN201220155351U CN202617103U CN 202617103 U CN202617103 U CN 202617103U CN 201220155351 CN201220155351 CN 201220155351 CN 201220155351 U CN201220155351 U CN 201220155351U CN 202617103 U CN202617103 U CN 202617103U
- Authority
- CN
- China
- Prior art keywords
- antenna
- nfc module
- sheet metal
- coil
- disconnected line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2216—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in interrogator/reader equipment
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- Details Of Aerials (AREA)
- Telephone Set Structure (AREA)
Abstract
The utility model discloses a NFC module and a mobile terminal applying the same. The NFC module is applied to the field of communication, and comprises an antenna and a metal sheet, wherein the antenna is provided with coils, and the metal sheet is positioned below the antenna. The metal sheet is positioned just below a coil enveloped area, and provided with broken grains which cut off an integral piece body of the metal sheet. Negative influences of an eddy current effect are reduced through cutting induction current off by the broken grains, thereby effectively reducing impacts imposed by the metal sheet on the efficiency of the antenna in the NFC module, and guaranteeing the efficiency of the antenna. There is no need to add parts or the area of the module, the structure is simple, the cost is low, and an effective communication distance of the NFC module is facilitated to increase.
Description
Technical field
The utility model relates to communication field, relates in particular to a kind of NFC module and uses the portable terminal of this module.
Background technology
NFC is initiated by PHILIPS Co., and well-known manufacturers such as Nokia, Sony are united a short distance wireless communication technology of promoting mainly.NFC works in the 13.6MHz frequency range, is developed by RFID.Utilize a single-chip NFC technology can realize the function of induction type card reader, induction type card and point-to-point communication.Because it is short that its distinctive signal attenuation technique, NFC technology have transmission range, energy consumption is low, and advantages such as good confidentiality along with development in recent years, more and more receive people's welcome.
Because NFC technical work frequency range is lower, therefore require its antenna that bigger area will be arranged, with reference to shown in Figure 1, traditional a kind of NFC module application is in mobile phone, and antenna 12 is connected with mobile phone back cover 11, is provided with a sheet metal 13 in antenna 12 (coil) below.When the NFC module was perhaps done point-to-point application as card reader, the NFC matching network can be sent into the antenna feed end to the electric current that produces, and flowing in antenna through electric current produces and the radiation field energy; Because eddy current effect; Sheet metal (the can be used as screening cover) induced field of antenna 12 belows; Can produce induced current 14 (as shown in Figure 1), this induced current 14 magnetic field of can inducting again, the direction in magnetic field is opposite with the magnetic direction of antenna generation; Can weaken the energy that aerial coil produces magnetic field, reduce antenna efficiency.Common solution is, the corresponding Ferrite Material that increases the aerial coil number of turn or additional mask effect on aerial coil, but these processing methods have not only increased the area of antenna, and increased the cost of antenna.
The utility model content
The technical problem underlying that the utility model will solve is, a kind of NFC module is provided and uses the portable terminal of this module, and it can weaken in the NFC module sheet metal to the influence of antenna efficiency.
For solving the problems of the technologies described above, the utility model provides a kind of NFC module, comprises the antenna that has coil and is positioned at the sheet metal of antenna below; Said sheet metal is located under being positioned at said coil envelope zone, is provided with the disconnected line that blocks the coherent body of sheet metal.
The geometric center point in corresponding said coil envelope zone, said disconnected line has the direction vector away from this geometric center point.
Said disconnected line is shape linearly.
Said disconnected line is provided with at least two, and each disconnected line evenly distributes around said geometric center point.
Said coil be the lead that is positioned on the same plane from inside to outside or from outer inwardly layering around the structure that forms.
On the said coil, the spacing between each layer conductor reduces successively from inside to outside.
A kind of portable terminal is provided with like aforesaid NFC module.
Said portable terminal also includes back cover, and the antenna of said NFC module is arranged on the back cover.
Also include screening cover, said sheet metal is connected through insulating barrier between the back side of locating under the corresponding coil envelope of the said sheet metal zone and the screening cover between screening cover and antenna.
Said sheet metal and screening cover are all through line-to-ground.
The beneficial effect of the utility model is: a kind of NFC module and use the portable terminal of this module comprises the antenna that has coil and is positioned at the sheet metal of antenna below; Said sheet metal is located under being positioned at said coil envelope zone, is provided with the disconnected line that blocks the coherent body of sheet metal; Through the cutting action of disconnected line to induced current, reduce the negative effect of eddy current effect, weaken effectively that sheet metal guarantees the usefulness of antenna to the influence of antenna efficiency in the NFC module; Need not to increase the accessory and the area of module, simple in structure, with low cost, be beneficial to the effective communication distance that increases the NFC module.
Further, the spacing setting through coil can reduce the influence of antenna parasitic capacitance, under the prerequisite that does not increase area, has improved the quality factor and the antenna efficiency of antenna.
Description of drawings
Fig. 1 is that traditional NFC antenna applications is in the sketch map of mobile phone;
Fig. 2 is the structural representation of the sheet metal part of a kind of embodiment of the utility model;
Fig. 3 is the structural representation of a kind of embodiment coiler part of the utility model NFC module;
Fig. 4 is that the utility model NFC module application is in the structural representation of mobile phone.
Embodiment
Combine accompanying drawing that the utility model is done further explain through embodiment below.
With reference to Fig. 1,2,4, a kind of embodiment of NFC module comprises the antenna 42 that has coil and is positioned at the sheet metal 31 of antenna below, locates be positioned at the coil envelope zone of antenna 42 at sheet metal 31 under, is provided with to block the link up disconnected line 32 of bodies of sheet metal 31.
Concrete, the geometric center point in corresponding said coil envelope zone, disconnected line 32 has the direction vector away from this geometric center point.
During enforcement, disconnected line 32 is shape linearly, and concrete, this disconnected line 32 is positioned on the outward extending direction of said geometric center point.
During enforcement, said disconnected line 32 can be provided with at least two, and each disconnected line 32 evenly distributes around said geometric center point.
In more detail, execution mode as shown in Figure 2, it engraves disconnected line 32 after adopting and dividing sector region on the sheet metal 31, and the setting through disconnected line 32 can effectively reduce the parasite current that antenna magnetic field induces.When the NFC module is used as card reader or point-to-point application; The electric current that flows into antenna from the NFC match circuit can produce and the radiation field energy; This action of a magnetic field is 21 last times of sheet metal in the below, because the disconnected line 32 on the sheet metal 21 makes electric current can not form a good loop, therefore; The magnetic field of also just can not effectively inducting can not weaken the usefulness of antenna magnetic field.This structure has guaranteed under the prerequisite that does not increase cost and area, has not only significantly reduced the influence of eddy current effect, and has improved the efficient of antenna greatly.
With reference to as shown in Figure 3, for antenna 42, its coil be the lead that is positioned on the same plane from inside to outside or from outer inwardly layering around the structure that forms.
During enforcement, on the coil from inside to outside the spacing between each layer conductor reduce successively.
In more detail, real mode as shown in Figure 3, antenna 42 comprises coil and the feed end 21,22 that is connected end winding, feed end 21,22 is used for connecting circuit, specifically with reference to prior art.The structure of coil adopts coiling from inside to outside (lead from inside to outside around) mode to be made, and the spacing between each layer line circle (around each layer conductor of correspondence of the rectangle induction region that forms) time reduces from inside to outside successively.Adopt the advantage of this structure can increase the magnetic flux area of antenna, and because the voltage difference maximum between first inductive layer 23 and second inductive layer, the 24 corresponding coils, the voltage difference between first inductive layer 23, the 3rd inductive layer 25 corresponding coils is taken second place; Analogize in proper order, the voltage difference between the 3rd inductive layer 25, the 4th inductive layer 26 coils is minimum, like this; Nexine is provided with the coil-span broad; It is narrower that skin is provided with between coil spacing, can not increase under the area prerequisite, reduces the parasitic capacitance on the aerial coil; Increase the figure of merit value of antenna, increase the efficient of aerial coil.
With reference to as shown in Figure 4, a kind of portable terminal embodiment is provided with like aforesaid NFC module.
During enforcement, portable terminal also includes back cover 11, and the antenna 42 of said NFC module is connected on the back cover or is embedded in the back cover 11.
During enforcement, portable terminal also can include screening cover, and said sheet metal 31 is connected through insulating barrier between the back side of locating under the said sheet metal 31 corresponding coil envelope zones and the screening cover between screening cover and antenna 42.
Further, sheet metal 31 can be all through line-to-ground with screening cover.
With reference to Fig. 4, be that mobile phone is given an example with the portable terminal in more detail, antenna 42 is applied to mobile phone can have two kinds of schemes; A kind of is that sheet metal 31 directly serves as screening cover; On screening cover (sheet metal 31), engrave disconnected line 32, when adopting this kind scheme, the slit of engraving smaller; The energy that therefore can the shield low-frequency range potato masher antenna 42 that comes out also can be avoided the circuit in the energy interference screening cover of antenna 42.Second kind of scheme is to make sheet metal 31 separately; Antenna 42 belows utilize insulating cement to link to each other with screening cover; And utilize the conducting resinl ground connection (inserting main ground) that is connected with screening cover at sheet metal 31 edges; The round exterior domain of dotted line as shown in Figure 2 can ground connection, and the round inner region of dotted line need be used insulating cement, and screening cover links to each other in the below.
Above content is the further explain that combines concrete execution mode that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection range of the utility model.
Claims (10)
1. NFC module; Comprise the antenna (42) that has coil and be positioned at the sheet metal (31) of antenna below, it is characterized in that; Said sheet metal (31) is located under being positioned at the coil envelope zone of antenna (42), is provided with to block the link up disconnected line (32) of body of sheet metal (31).
2. NFC module as claimed in claim 1 is characterized in that, the geometric center point in corresponding said coil envelope zone, and said disconnected line (32) has the direction vector away from this geometric center point.
3. NFC module as claimed in claim 2 is characterized in that, said disconnected line (32) is shape linearly.
4. NFC module as claimed in claim 2 is characterized in that, said disconnected line (32) is provided with at least two, and each disconnected line (32) evenly distributes around said geometric center point.
5. like each described NFC module of claim 1 to 4, it is characterized in that, said coil be the lead that is positioned on the same plane from inside to outside or from outer inwardly layering around the structure that forms.
6. NFC module as claimed in claim 5 is characterized in that, on the said coil, the spacing between each layer conductor reduces successively from inside to outside.
7. a portable terminal is characterized in that, is provided with like each described NFC module of claim 1 to 6.
8. portable terminal as claimed in claim 7 is characterized in that, said portable terminal also includes back cover (11), and the antenna of said NFC module (42) is arranged on the back cover (11).
9. like claim 7 or 8 described portable terminals; It is characterized in that; Also include screening cover, said sheet metal (31) is positioned between screening cover and the antenna (42), is connected through insulating barrier between the back side of locating under the corresponding coil envelope of said sheet metal (31) zone and the screening cover.
10. portable terminal as claimed in claim 9 is characterized in that, said sheet metal (31) and screening cover are all through line-to-ground.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220155351 CN202617103U (en) | 2012-04-13 | 2012-04-13 | NFC module and mobile terminal applying same |
| PCT/CN2012/077232 WO2013152560A1 (en) | 2012-04-13 | 2012-06-20 | Nfc module and mobile terminal applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220155351 CN202617103U (en) | 2012-04-13 | 2012-04-13 | NFC module and mobile terminal applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202617103U true CN202617103U (en) | 2012-12-19 |
Family
ID=47350770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220155351 Expired - Lifetime CN202617103U (en) | 2012-04-13 | 2012-04-13 | NFC module and mobile terminal applying same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202617103U (en) |
| WO (1) | WO2013152560A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531915A (en) * | 2013-10-24 | 2014-01-22 | 国家电网公司 | Wireless induction power transmission antenna |
| WO2015043345A1 (en) * | 2013-09-27 | 2015-04-02 | 中兴通讯股份有限公司 | Antenna device and terminal |
| CN105976591A (en) * | 2016-06-23 | 2016-09-28 | 国网山东省电力公司日照供电公司 | Wireless communication device based on equipotential principle for high-tension transmission line |
| CN106488650A (en) * | 2016-12-14 | 2017-03-08 | 上海纳恩汽车技术有限公司 | A kind of pcb board reducing low-frequency antenna eddy current effect |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9084343B2 (en) * | 2009-05-20 | 2015-07-14 | Koninklijke Philips N.V. | Electronic device having an inductive receiver coil with ultra-thin shielding layer and method |
| CN201590480U (en) * | 2009-12-30 | 2010-09-22 | 中兴通讯股份有限公司 | Handheld terminal and power supply battery |
| CN201928324U (en) * | 2010-12-27 | 2011-08-10 | 中兴通讯股份有限公司 | Terminal |
-
2012
- 2012-04-13 CN CN 201220155351 patent/CN202617103U/en not_active Expired - Lifetime
- 2012-06-20 WO PCT/CN2012/077232 patent/WO2013152560A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015043345A1 (en) * | 2013-09-27 | 2015-04-02 | 中兴通讯股份有限公司 | Antenna device and terminal |
| CN103531915A (en) * | 2013-10-24 | 2014-01-22 | 国家电网公司 | Wireless induction power transmission antenna |
| CN103531915B (en) * | 2013-10-24 | 2016-04-27 | 国家电网公司 | Wireless induction power transmission antenna |
| CN105976591A (en) * | 2016-06-23 | 2016-09-28 | 国网山东省电力公司日照供电公司 | Wireless communication device based on equipotential principle for high-tension transmission line |
| CN105976591B (en) * | 2016-06-23 | 2019-03-15 | 国网山东省电力公司日照供电公司 | Ultra-high-tension power transmission line wireless communication apparatus based on equipotential ring principle |
| CN106488650A (en) * | 2016-12-14 | 2017-03-08 | 上海纳恩汽车技术有限公司 | A kind of pcb board reducing low-frequency antenna eddy current effect |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013152560A1 (en) | 2013-10-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |
|
| CX01 | Expiry of patent term |