CN202817191U - Coupled antenna for near field communication - Google Patents
Coupled antenna for near field communication Download PDFInfo
- Publication number
- CN202817191U CN202817191U CN 201220541305 CN201220541305U CN202817191U CN 202817191 U CN202817191 U CN 202817191U CN 201220541305 CN201220541305 CN 201220541305 CN 201220541305 U CN201220541305 U CN 201220541305U CN 202817191 U CN202817191 U CN 202817191U
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- antenna
- field communication
- magnetic material
- coupled antenna
- utility
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Abstract
The utility model discloses a coupled antenna for near field communication, which is characterized in that the coupled antenna comprises a magnetic material and a conducting wire wound on the magnetic material, the cross-section shape of the conducting wire is circular, square or triangle, and the magnetic material is the ferrite magnetic material. The coupled antenna for near field communication increases the bandwidth of the antenna, and increases the communication distance.
Description
Technical field
The utility model relates to electromagnetic field communication antenna field and near-field energy coupling field.Relate in particular to near-field communication (NFC) antenna and the mobile phone wireless charging field of mobile phone.
Background technology
Credit card, debit card, mass transit card are inseparable with the daily life of a lot of urban humans, and in future at home, these cards will be integrated on the unified card, and bundle with mobile phone.Working is gone by taxi by the subway, is gone the supermarket market shopping, need not line up by boarding card by air, has a meal to sing and see a film ... nearly all current consumption as long as mobile phone is brushed, completely can both be settled, and near-field communication becomes the necessary functions of mobile phone.Because mobile phone small volume, there are the large-area metals such as cell phone mainboard and battery inside, near-field communication aerial is designed to the bottleneck that this function realizes, in order to reduce the impact of metal pair near-field communication aerial, the near field antenna method for designing is to paste the magnetic material of a layer thickness 0.2 millimeter below the FPC printed coil at present, as shown in Figure 1.There is following problem in this scheme.
1, near field antenna is attached to mobile phone battery cover, has increased mobile phone thickness, and near-field communication needs to increase magnetic material thickness apart from increasing, can't be compatible between thickness and the communication distance.
If 2 mobile phones need wireless charging, the wireless charging reception antenna also needs to be installed in mobile phone battery cover, and the back cover area is limited, influences each other between wireless charging reception antenna and the near-field communication aerial, and both performances are difficult to compatible.
Summary of the invention
The utility model provides a kind of near-field communication coupled antenna, has increased communication distance.
For solving the problems of the technologies described above, the technical scheme that the utility model provides is: a kind of near-field communication coupled antenna, this coupled antenna comprise magnetic material and the wire that is wrapped on the magnetic material.
Preferably, the cross sectional shape of described wire is circular, square or triangle.
Preferably, described magnetic material is ferrite magnetic material.
Preferably, described magnetic material shape is circular or square.
Preferably, described wire clockwise direction or counter clockwise direction are on magnetic material.
The beneficial effects of the utility model are: the beamwidth of antenna improves, and communication distance increases.
1, flexible structure, according to product design, designing antenna shape flexibly, Fig. 4 has enumerated two antenna, left side curved shape, sheet is defended on the right.A, B are respectively two feedback points of antenna among the figure.
2, because the magnetic line of force main road of antenna is magnetic material, metal material is little on the antenna impact around the antenna.
Description of drawings
Fig. 1 is the near-field coupling antenna that present mobile phone uses;
Fig. 2 is the structure chart of first embodiment of the utility model near-field coupling antenna;
Fig. 3 A is a concrete application drawing of the utility model antenna;
Fig. 3 B is the utility model near-field coupling antenna-coupled district magnetic chart;
Fig. 4 a is second embodiment near-field coupling of the utility model antenna assumption diagram;
Fig. 4 b is the 3rd embodiment near-field coupling antenna assumption diagram of the utility model;
Fig. 5 a is the influence of magnetic field of the present antenna of metal pair;
Fig. 5 b is the influence of magnetic field of the antenna that provides of metal pair the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
The near-field communication coupled antenna that the utility model provides, this coupled antenna comprise magnetic material and the wire that is wrapped on the magnetic material.
The cross sectional shape of described wire is circular, square or triangle.
Described magnetic material is ferrite magnetic material.
Described magnetic material shape is circular or square.
Described wire clockwise direction or counter clockwise direction are on magnetic material.
Described near-field communication aerial is used for transmitting antenna or reception antenna.
Described communication antenna also is used for the near-field energy coupling, non-contact charger systems.
For present near-field communication aerial existing problems, the utility model antenna is not limited to and is installed in mobile phone battery cover, can be according to the mobile phone shape, be designed to arbitrary shape, be placed on interior of mobile phone, its basic comprising is to twine wire at magnetic material to make, and shown in Fig. 2, A, B are two feedback points of aerial coil among the figure.
The impact of metal pair the utility model is minimum, shape impact take Fig. 5 a and 5b as the present near-field communication aerial of metal pair and the utility model near-field communication aerial relatively, Fig. 5 a is present near-field communication aerial, when the close metal surface of antenna, metal meeting cutting magnetic line, the magnetic line of force that passes aerial coil reduces, and the near-field communication distance reduces; When antenna is attached to the metal surface, the magnetic flux of aerial coil will be 0, and antenna is ineffective, so that present near-field communication aerial is affected by battery of mobile phone and mainboard is very large, badly influence communication distance.Fig. 5 b is the situation of the utility model antenna when running into metal, when the utility model antenna near metal straight when being attached to metal, the reflex of metal, only stopped the antenna magnetic line of force on one side, another side (communication zone) can be strengthened on the contrary, can not block the magnetic line of force, so can be not influential to the near-field communication distance.
Fig. 3 A is the implementation figure of the utility model on Mobile phone, and in this kind of mobile phone, near-field communication aerial is positioned at the mobile phone top, ferrite magnetic material, and in order to save the space, the ferrimagnetism magnetic material is hollow, degree thickness is 0.5mm.Wire 0.1mm insulated copper wire, along the air core wire around 4 circles, inductance value 2.23uH.
Fig. 3 B is that the utility model antenna is installed in the later magnetic field radiation figure of mobile phone.The near-field communication zone is at the top of mobile phone, but not back cover, more convenient user's operation.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. a near-field communication coupled antenna is characterized in that, this coupled antenna comprises magnetic material and the wire that is wrapped on the magnetic material.
2. near-field communication coupled antenna according to claim 1 is characterized in that, the cross sectional shape of described wire is circular, square or triangle.
3. near-field communication coupled antenna according to claim 1 is characterized in that, described magnetic material is ferrite magnetic material.
4. near-field communication coupled antenna according to claim 1 is characterized in that, described magnetic material shape is circular or square.
5. near-field communication coupled antenna according to claim 1 is characterized in that, described wire clockwise direction or counter clockwise direction are on magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220541305 CN202817191U (en) | 2012-10-22 | 2012-10-22 | Coupled antenna for near field communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220541305 CN202817191U (en) | 2012-10-22 | 2012-10-22 | Coupled antenna for near field communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202817191U true CN202817191U (en) | 2013-03-20 |
Family
ID=47876014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220541305 Expired - Fee Related CN202817191U (en) | 2012-10-22 | 2012-10-22 | Coupled antenna for near field communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202817191U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159451A (en) * | 2015-04-22 | 2016-11-23 | 上海复旦微电子集团股份有限公司 | Antenna and radio frequency identification equipment |
-
2012
- 2012-10-22 CN CN 201220541305 patent/CN202817191U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159451A (en) * | 2015-04-22 | 2016-11-23 | 上海复旦微电子集团股份有限公司 | Antenna and radio frequency identification equipment |
| CN106159451B (en) * | 2015-04-22 | 2019-02-26 | 上海复旦微电子集团股份有限公司 | Antenna and radio frequency identification equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20161022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |