CN104009295A - Near-field communication antenna and portable electronic device with antenna - Google Patents
Near-field communication antenna and portable electronic device with antenna Download PDFInfo
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- CN104009295A CN104009295A CN201310059221.1A CN201310059221A CN104009295A CN 104009295 A CN104009295 A CN 104009295A CN 201310059221 A CN201310059221 A CN 201310059221A CN 104009295 A CN104009295 A CN 104009295A
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Abstract
A near-field communication antenna comprises an irradiator, a feed-in end and a ground end. The irradiator is a coil of a loudspeaker. The feed-in end is a positive pin of the loudspeaker. The ground end is a negative pin of the loudspeaker. Two ends of the coil are electrically connected to the positive pin and the negative pin respectively. The invention also relates to a portable electronic device with the antenna. According to the invention, the coil of the loudspeaker or a coil of a receiver is used as a near-field communication antenna. Volume of the portable electronic device can be minimized effectively.
Description
Technical field
The present invention relates to a kind of antenna, relate in particular to a kind of near-field communication (Near Field Communication, NFC) antenna and there is the portable electron device of described NFC antenna.
Background technology
Near-field communication (Near Field Communication, NFC) technology is a kind of short-range high frequency wireless communication technology, allows to carry out contactless Point-to-Point Data Transmission swap data between electronic equipment.NFC technology has been widely used in portable electron device, for gate inhibition and mobile device for paying etc.
NFC antenna is a kind of near-field coupling antenna, frequency of utilization is generally 13.56MHz, NFC antenna operated by rotary motion is on battery cover, this makes battery cover must be nonmetallic in order to avoid affect the performance of antenna, like this limited the selection to battery cover material, NFC antenna is arranged on battery cover simultaneously, and this certainly will increase the thickness of portable electron device.
Summary of the invention
For the problems referred to above, be necessary to provide a kind of NFC antenna that reduces portable electron device thickness.
In addition, be also necessary to provide a kind of portable electron device with described NFC antenna.
A kind of near-field communication aerial, comprise radiant body, feed side and earth terminal, the coil that this radiant body is loud speaker, the anodal pin that this feed side is loud speaker, this earth terminal is the negative pole pin of loud speaker, and the two ends of this coil are electrically connected to respectively described anodal pin and negative pole pin.
A kind of portable electron device, comprises near-field communication aerial, audio chip and near-field communication chip, and described near-field communication aerial comprises radiant body, feed side and earth terminal, and described near-field communication chip comprises feed-in pin and grounding pin; This radiant body is the coil of loud speaker, the anodal pin that this feed side is loud speaker, and the negative pole pin that this earth terminal is loud speaker, the two ends of this coil are electrically connected to respectively described anodal pin and negative pole pin; Described anodal pin and negative pole pin are electrically connected to respectively signal feed-in pin and the grounding pin of near-field communication chip, and described anodal pin and negative pole pin be also electrically connected to described audio chip, for received audio signal.
Described portable electron device is using loudspeaker coil as NFC antenna, and NFC chip and audio chip share loud speaker, thereby can effectively reduce the volume of portable electron device.
Brief description of the drawings
Fig. 1 is the schematic diagram of the portable electron device of preferred embodiments of the present invention.
Main element symbol description
| Portable electron device | 100 |
| Near-field communication aerial | 10 |
| Audio chip | 20 |
| NFC chip | 30 |
| Loud speaker | 200 |
| Loudspeaker coil | L |
| The first inductance | L1 |
| The second inductance | L2 |
| The first electric capacity | C1 |
| The second electric capacity | C2 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1, the portable electron device 100 of preferred embodiments of the present invention comprises near-field communication aerial 10, audio chip 20 and near-field communication (Near Field Communication, NFC) chip 30.
This near-field communication aerial 10 comprises radiant body, feed side and earth terminal.In the present embodiment, described radiant body is the loudspeaker coil L of portable electron device 100, and feed side is the anodal pin P1 of loud speaker 200, and earth terminal is the negative pole pin P2 of loud speaker 200; The two ends of loudspeaker coil L are electrically connected to respectively anodal pin P1 and negative pole pin P2.
This audio chip 20 to loud speaker 200, works loud speaker 200 for output audio signal, and this audio signal is low frequency signal, is generally 20KHz.This audio chip 20 has anodal pin P3 and negative pole pin P4, and this positive pole pin P3 is electrically connected on the anodal pin P1 of this loud speaker 200, and this negative pole pin P4 is electrically connected on the negative pole pin P2 of this loud speaker 200, for transmission of audio signal.Preferably, when audio chip 20 is without when work, can make the anodal pin P3 of this audio chip 20 and negative pole pin P4 in high-impedance state, to reduce the interference to NFC chip 30 by tri-state gate circuit.
This NFC chip 30 is for output and reception antenna signal, and aerial signal is high-frequency signal, is generally 13.56MHz.Described NFC chip 30 comprises feed-in pin P5 and grounding pin P6.The first inductance L 1 is electrically connected between the feed-in pin P5 of NFC chip 30 and the anodal pin P1 of loud speaker; The second inductance L 2 is electrically connected between the grounding pin P6 of NFC chip 30 and the negative pole pin P2 of loud speaker.Described the first inductance L 1 and the second inductance L 2 are Low ESRs for low frequency signal, thus on audio signal without impact.Meanwhile, described the first inductance L 1 and the second inductance L 2 form an antenna-matching circuit, for compensating the inductance value of near-field communication aerial 10, make the frequency of this near-field communication aerial 10 reach 13.56MHz.For the low frequency signal that makes audio chip 20 does not affect NFC chip 30, between the anodal pin P3 of this audio chip 20 and the feed-in pin P5 of this NFC chip 30, be electrically connected with one first capacitor C 1, between the negative pole pin P4 of this audio chip 20 and the grounding pin P6 of this NFC chip 30, be electrically connected with one second capacitor C 2.
In the time that the current circuit forming between near-field communication aerial 10, audio chip 20 and NFC chip 30 has electric current to pass through, described the first inductance L 1 and the second inductance L 2 are Low ESRs for low frequency, the low frequency signal of audio chip 20 can directly pass through, so this loud speaker can be used as normal speaker operation.The low frequency signal of this audio chip 20 cannot pass through the first capacitor C 1 and the second capacitor C 2 simultaneously, makes this low frequency signal noiseless to NFC chip.The high-frequency signal of NFC chip can be directly by described the first capacitor C 1 and the second capacitor C 2, this near-field communication aerial 10 is now as NFC antenna, the inductance value of this first inductance L 1 and the second inductance L 2 bucking coil L, the operating frequency that makes this near-field communication aerial 10 is 13.56MHz.
Be appreciated that, the radiant body of near-field communication aerial 10 of the present invention is not limited to loud speaker 200, also can be receiver, and this receiver comprises a coil, the inductance value of described the first inductance L 1 and the second inductance L 2 can be adjusted as required, as long as can realize the normal coupling of near-field communication aerial 10.
Loud speaker 200 is adapted as near-field communication aerial 10 by described portable electron device 100, is electrically connected the first inductance L 1 and the second inductance L 2 so that this loud speaker 200 can be used as the near-field communication aerial 10 being operated under high frequency by loud speaker 200.Meanwhile, between NFC chip 30 and audio chip 20, be electrically connected with electric capacity, make the low frequency signal of audio chip 20 not affect NFC chip 30.So, NFC chip 30 can share a loud speaker 200 with audio chip 20, can effectively reduce the volume of portable electron device 100.
Claims (7)
1. a near-field communication aerial, comprise radiant body, feed side and earth terminal, it is characterized in that: the coil that this radiant body is loud speaker, this feed side is the anodal pin of loud speaker, this earth terminal is the negative pole pin of loud speaker, and the two ends of this coil are electrically connected to respectively described anodal pin and negative pole pin.
2. near-field communication aerial as claimed in claim 1, it is characterized in that: described near-field communication aerial also comprises one first inductance and one second inductance, this feed side is electrically connected to the feed-in pin of a near-field communication chip by this first inductance, this earth terminal is electrically connected to the grounding pin of this near-field communication aerial by this second inductance, described the first inductance and the second inductance are for compensating the inductance value of this radiant body.
3. near-field communication aerial as claimed in claim 2, it is characterized in that: described loud speaker receiver is replaced, this radiant body is the coil of receiver, this feed side is the anodal pin of receiver, this earth terminal is the negative pole pin of receiver, the inductance value of described the first inductance and the second inductance can be adjusted as required, thereby realizes the coupling of near-field communication aerial.
4. a portable electron device, comprise near-field communication aerial, audio chip and near-field communication chip, described near-field communication aerial comprises radiant body, feed side and earth terminal, described near-field communication chip comprises feed-in pin and grounding pin, it is characterized in that: the coil that this radiant body is loud speaker, this feed side is the anodal pin of loud speaker, the negative pole pin that this earth terminal is loud speaker, and the two ends of this coil are electrically connected to respectively described anodal pin and negative pole pin; Described anodal pin and negative pole pin are electrically connected to respectively signal feed-in pin and the grounding pin of near-field communication chip, and described anodal pin and negative pole pin be also electrically connected to described audio chip, for received audio signal.
5. portable electron device as claimed in claim 4, it is characterized in that: described loud speaker receiver is replaced, this radiant body is the coil of receiver, this feed side is the anodal pin of receiver, this earth terminal is the negative pole pin of receiver, the inductance value of described the first inductance and the second inductance can be adjusted as required, thereby realizes the coupling of near-field communication aerial.
6. portable electron device as claimed in claim 4, it is characterized in that: between this feed side and the feed-in pin of this near-field communication chip, be electrically connected with the first inductance, between the grounding pin of this earth terminal and this near-field communication chip, be electrically connected with the second inductance, described the first inductance and the second inductance are for compensating the inductance value of this radiant body.
7. portable electron device as claimed in claim 4, it is characterized in that: between the anodal pin of described audio chip and the feed-in pin of near-field communication chip, be electrically connected with one first electric capacity, between the negative pole pin of described audio chip and the grounding pin of near-field communication chip, be electrically connected with one second electric capacity, described the first electric capacity and the second electric capacity is the interference to near-field communication chip in order to the low frequency signal that reduces audio chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310059221.1A CN104009295B (en) | 2013-02-26 | 2013-02-26 | Near-field communication aerial and the portable electron device with the antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310059221.1A CN104009295B (en) | 2013-02-26 | 2013-02-26 | Near-field communication aerial and the portable electron device with the antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104009295A true CN104009295A (en) | 2014-08-27 |
| CN104009295B CN104009295B (en) | 2018-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310059221.1A Expired - Fee Related CN104009295B (en) | 2013-02-26 | 2013-02-26 | Near-field communication aerial and the portable electron device with the antenna |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015172483A1 (en) * | 2014-05-15 | 2015-11-19 | 中兴通讯股份有限公司 | Near field communication device and working method, mobile terminal thereof |
| CN106229610A (en) * | 2016-07-21 | 2016-12-14 | 宇龙计算机通信科技(深圳)有限公司 | A kind of mobile terminal, near-field communication aerial and method to set up |
| CN106252836A (en) * | 2016-09-22 | 2016-12-21 | 青岛海信移动通信技术股份有限公司 | Terminal and the implementation method of NFC antenna thereof |
| CN106953662A (en) * | 2017-03-31 | 2017-07-14 | 维沃移动通信有限公司 | A kind of mobile terminal and coil method for sharing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232124A (en) * | 2008-01-11 | 2008-07-30 | 邱小军 | Method for making near-field communication aerial |
| CN202534777U (en) * | 2012-04-11 | 2012-11-14 | 上海安费诺永亿通讯电子有限公司 | Novel wireless terminal |
| CN202617115U (en) * | 2012-04-27 | 2012-12-19 | 中兴通讯股份有限公司 | NFC (Near Field Communication) communication module |
-
2013
- 2013-02-26 CN CN201310059221.1A patent/CN104009295B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232124A (en) * | 2008-01-11 | 2008-07-30 | 邱小军 | Method for making near-field communication aerial |
| CN202534777U (en) * | 2012-04-11 | 2012-11-14 | 上海安费诺永亿通讯电子有限公司 | Novel wireless terminal |
| CN202617115U (en) * | 2012-04-27 | 2012-12-19 | 中兴通讯股份有限公司 | NFC (Near Field Communication) communication module |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015172483A1 (en) * | 2014-05-15 | 2015-11-19 | 中兴通讯股份有限公司 | Near field communication device and working method, mobile terminal thereof |
| CN106229610A (en) * | 2016-07-21 | 2016-12-14 | 宇龙计算机通信科技(深圳)有限公司 | A kind of mobile terminal, near-field communication aerial and method to set up |
| CN106252836A (en) * | 2016-09-22 | 2016-12-21 | 青岛海信移动通信技术股份有限公司 | Terminal and the implementation method of NFC antenna thereof |
| CN106953662A (en) * | 2017-03-31 | 2017-07-14 | 维沃移动通信有限公司 | A kind of mobile terminal and coil method for sharing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104009295B (en) | 2018-04-24 |
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Granted publication date: 20180424 |