CN101232124A - Method for making near-field communication aerial - Google Patents

Method for making near-field communication aerial Download PDF

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Publication number
CN101232124A
CN101232124A CN 200810065177 CN200810065177A CN101232124A CN 101232124 A CN101232124 A CN 101232124A CN 200810065177 CN200810065177 CN 200810065177 CN 200810065177 A CN200810065177 A CN 200810065177A CN 101232124 A CN101232124 A CN 101232124A
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China
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field communication
near field
speaker
power amplifier
antenna
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CN 200810065177
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Chinese (zh)
Inventor
邱小军
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邱小军
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Priority to CN 200810065177 priority Critical patent/CN101232124A/en
Publication of CN101232124A publication Critical patent/CN101232124A/en

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Abstract

The invention provides a method for fabricating near-field communication antenna, which adopts a speaker voice coil applied in mobile communication equipment as the antenna for near-field communication. Compared with special coil in prior art, the antenna fabricated by the invention has larger antenna, thus increasing the radiation efficiency of electromagnetic wave signal and the communication distance between equipments. Meanwhile, the mobile communication equipment obviates the need of additional special coil, thus solving the space difficulty and reducing the cost of the mobile communication equipment.

Description

一种制作近场通信天线的方法 A method of making a near field communication antenna

技术领域 FIELD

本发明涉及近场通4言^支术(Near Field Communication),尤其是将近场通信技术嵌入移动通信设备中。 The present invention relates to a near-field technique through 4 Introduction ^ branched (Near Field Communication), in particular near field communication technology into the mobile communication device. 背景技术 Background technique

近场通信Near Field Communication (简称NFC)是一种短距离无线连接技术,可以使电子设备之间实现无线互连,其原理是通过电子设备之间交换电磁波信号而进行短距离的信息交换。 Near Field Communication Near Field Communication (referred to as NFC) is a short-range wireless connectivity technology that enables wireless interconnection between electronic devices, the principle of exchange of information is performed by the short-range exchange of electromagnetic signals between electronic devices.

近场通信(NFC)技术因其安全特性和非接触性通信,近年来越来越受人们的重视。 Near Field Communication (NFC) technology because of its security features and the non-contact communication, in recent years more and more people's attention. 如,已有移动通信设备厂商先后在移动通信产品内嵌入近场通信技术,即在移动通信产品的PCB板上加设一NFC射频功放输出电路。 For example, mobile communication equipment manufacturers have been embedded near field communication technology in mobile communication products, i.e. the PCB of the mobile communication NFC product is further installed with a radio frequency power amplifier output circuit. 该NFC射频功放输出电路中有一将需待发的电信号放大的射频功放器和与功放器连接的电容,在该NFC射频功放输出电路的输出端还需接一个天线,此天线与NFC射频功放输出电路中的电容构成谐振电路,并通过该天线发射出此谐振电路产生的电磁波信号,从而实现设备之间通过交换电磁波而进行短距离的信息交换。 The NFC RF amplifier output circuit has a capacitor for an outgoing electrical signal the amplified RF power amplifier and a power amplifier connected to the output needed by one antenna terminal of the RF power amplifier output circuit NFC, NFC antenna and this RF power amplifier output circuit capacitor form a resonant circuit, and emits electromagnetic signals by this resonant circuit of the antenna, thereby realizing the exchange of information between devices through a short-range exchange of electromagnetic waves. 通常情况下,所需的天线是在移动通信设备内加入一个专用线圈,但是随着移动通信设备越来越微型化,其内部的空间则越来越有限,从而导致很难找到合适的空间用于安置专用线圈,而且, 额外加入的专用线圏增加了移动通信产品的成本。 Typically, the antenna is required to add a dedicated coils within a mobile communication device, but more and more as the miniaturization of mobile communication device, which interior space is more limited, resulting in difficult to find suitable space with dedicated coils disposed on, and, additionally added rings of dedicated lines increases the cost of mobile communications products.

因而,如何使近场通信技术嵌入移动通信设备内,既能解决其内部空间的困境、又能节省成本的问题值得人们研究。 Thus, how near field communication technology embedded in mobile communication devices, both interior space solutions to their plight, but also the question of cost savings worth study. 发明内容 SUMMARY

本发明需解决的技术问题是克服上述现有技术的不足,提供一种制作近场通信天线的方法,而且通过该方法制作得来的天线能获得较大的通信距离和辐射效率。 The present invention is a technical problem to be solved is to overcome the deficiencies of the prior art, there is provided a method of fabricating a near field communication antenna, and to be made by this method can obtain a large antenna and radiation efficiency of the communication distance.

根据上述需解决的技术问题,设计了一种制作近场通信天线的方法, 该方法的步骤包括:备,该近场通信射频功》文输出电路中包括有电容; According to the above-described technical problem to be solved, we devised a method of making a near field communication antenna, the method comprising the steps of: preparation, the NFC RF power "message output circuit comprising a capacitor;

(2) 、提供一应用于所述移动通信设备内的扬声器,该扬声器内包括 (2) providing a speaker in the mobile communication device is applied to an internal speaker which comprises

有音圏; There are rings of sound;

(3) 、从扬声器的音圏上引出两个接线端,并使此两个接线端接入所 (3), the lead terminals from the two rings of the sound of the speaker, and these two terminals of the access

述的近场通信射频功放输出电路,扬声器的音圏与该近场通信射频功放输出电路中的电容构成谐振电路,从而实现通过将扬声器的音圏作为近场通信的天线发射出电磁波信号。 Near field communication RF power amplifier output circuit described later, the speaker sound rings of near-field communication with the RF power amplifier output circuit capacitor form a resonance circuit, thereby realizing the electromagnetic signals emitted by the speaker as the sound rings of antenna near field communication.

作为本发明的优化改进,所述的近场通信射频功放输出电路中的电容设置于扬声器内固定音圈的盆架上。 As the present invention to improve the optimization, the capacitor is provided a near field communication RF power amplifier output circuit according to the voice coil is fixed in the speaker cone frame.

本发明与现有技术相比,具有以下优点: Compared with the prior art the present invention has the following advantages:

以应用于移动通信设备内的扬声器音圈作为近场通信的天线,相比现有技术采用的专用线圈,本发明所得的天线面积更大,从而增大了电磁波信号的辐射效率和设备与设备之间的通信距离;同时,勿需在移动通信设备内额外增加一专用线圈,既解决了移动通信设备的空间困境,又降低了成本。 In the speaker voice coil applied to a mobile communication device as an antenna near field communication, compared to the prior art dedicated coils used, the resulting larger antenna area of ​​the present invention, thereby increasing the radiation efficiency and device to device electromagnetic signals communication distance between the; same time, do not need a special additional coil in the mobile communication apparatus, only to solve the dilemma of the mobile communication device space, reducing costs. 附图说明 BRIEF DESCRIPTION

图l是本发明实施方式手才;t^应用于手机内扬声器的内部结构示意图; Figure l embodiment of the present invention is a hand only; the internal structure of the mobile phone T ^ loudspeaker schematic applied;

图2是本发明实施方式的电路图; FIG 2 is a circuit diagram of an embodiment of the present invention;

图3是本发明NFC射频功放输出电路工作时的等效电路图。 FIG 3 is an equivalent circuit diagram of the present invention, when an NFC RF power amplifier output circuit. 具体实施方式 detailed description

下面结合附图和实施方式对本发明作进一步说明。 The present invention will be further described in conjunction with the accompanying drawings and embodiments.

如图1所示,本发明需提供一移动手机(未图示)和一扬声器10。 As shown in FIG 1, the present invention is required to provide a mobile phone (not shown) and a speaker 10. 该移动手机内的PCB板3上已预先嵌入近场通信(NFC )的射频功放输出电路,该NFC射频功放输出电路包括有射频功放器和分别与射频功放器两端串联的电容C1和C2,射频功放器用于将移动手机需待发或交换的信号放大。 The mobile phone in the PCB board 3 has been pre-fitted on a near field communication (NFC) of the RF power amplifier output circuit, the output of the RF power amplifier circuit comprises a NFC radio frequency amplifiers and RF power amplifier respectively to both ends of the series capacitors C1 and C2, RF signal power amplifier for a mobile phone exchange for an outgoing or enlarged. 该扬声器10设置于移动手机内已达到发音的目的,其内部包括有音圈11、固定音圏的盆架12,从音圈11上引出的接线端Bl和B2为音频电信号输入端,该音频电信号输入端接入音频功放输出电路。 The speaker 10 is provided inside the mobile phone has reached the utterance objects, including a voice coil 11 therein, stationary rings of the sound cone frame 12, 11 drawn out from the voice coil terminals Bl and B2 for the input audio electrical signal, the audio input electric signal audio amplifier output circuit access. 本发明实施方式的电容C1和C2可安置在移动手机的PCB板3上,也可安置在盆架12 上(未图示),安置在盆架2上可节省PCB板3上的空间。 Capacitors C1 and C2 embodiment of the present invention may be disposed on the PCB board mobile phone 3 can also be disposed on the basin frame 12 (not shown) disposed on cone frame 2 can save space on the PCB 3.

本发明的重要的一步是从扬声器10的音圈11上引出接线端Al和A2 , 并使该接线段Al和A2接入NFC射频功放输出电路的输出端。 An important step in the present invention is a lead-out terminals Al and A2 from the speaker 10 of the voice coil 11, and the access NFC RF power amplifier output circuit output terminal of the connecting section Al and A2.

完成上述的步骤,上述各元件的电路连接关系如图2所示,其包括扬声器10的音频功放输出电路和移动手机内已预先嵌入的NFC射频功放输出电路。 Completion of the above steps, the circuit elements of the connection relationship shown in FIG. 2, which includes an audio amplifier output circuit 10 and a speaker in the mobile phone has been previously embedded NFC RF power amplifier output circuit. 音频功放输出电路和NFC射频功放输出电路的输出端均与扬声器IO的音圏ll相连。 Output of audio amplifier output circuit and the NFC RF amplifier output circuit are connected to the speaker sound rings of the IO ll. 音频功放输出电路包括有音频功放器和分别与音频功放器两端串联的电感Ll和L2。 Audio amplifier output circuit comprises an audio amplifier and audio amplifier with both ends of the series inductors Ll and L2. NFC射频功放输出电路包括有射频功放器和分别与射频功放器两端串联的电容Cl和C2。 NFC RF power amplifier output circuit comprises a RF power amplifier and RF power amplifier respectively to both ends of the series capacitors Cl and C2.

在音频功放输出电路工作时,其工作频率段为0~ 22KHZ, NFC射频功放输出电路中的电容Cl和C2在此频率段呈现极高的阻抗或电阻,以致可视为断开,即音频功放输出电路工作时,NFC射频功放输出电路不工作。 When the audio amplifier output circuit, its operating frequency band of 0 ~ 22KHZ, capacitor Cl NFC RF amplifier output circuit section and C2 at this frequency presents a very high impedance or resistance, that can be considered to be open, i.e. audio amplifier the output circuit, NFC RF power amplifier output circuit does not operate.

同样,在NFC射频功放输出电路工作时,其工作频率为13. 56MHz, 音频功放输出电^^中的电感Ll和L2在此频率呈现极高的阻抗或电阻,以致可视为断开,即NFC射频功放输出电路工作时,音频功放输出电路不工作。 Similarly, when the NFC RF power amplifier output circuit, the operating frequency of 13. 56MHz, audio amplifier output ^^ Ll and L2 of the inductance at this frequency presents a high impedance or resistance, that can be considered to be open, i.e., when the NFC RF amplifier output circuit, the output of audio amplifier circuit does not operate.

本发明可将音频输出和NFC输出分开。 The present invention can be separated and NFC output an audio output. 因而,当手机用户需使用近场通信技术进行短距离通信时,NFC射频功放输出电路工作,音频功放输出电路不工作,图2所示的电路等效为图3所示的电路。 Accordingly, when the mobile phone users need to use near field communication technology for short-range communication is, the NFC RF power amplifier output circuit, the output of audio amplifier circuit does not operate, the circuit shown in FIG. 2 is an equivalent circuit shown in FIG 3. 此时的扬声器IO 的音圏11等同于一电感L,该电路中的电容C1及电容C2和电感L构成一谐振电路,同时作为电感L的扬声器音圈发射出此谐振电路产生的电磁波信号。 At this time, the speaker sound IO rings of 11 is equivalent to an inductance L, a capacitor C1 and the circuit inductance L and the capacitor C2 constitute a resonance circuit, while this emits electromagnetic signals generated by the resonant circuit inductance L as a speaker voice coil.

本发明利用扬声器的音圏作为NFC的天线,所得的天线面积大,从而增大了电磁信号的辐射效率和设备与设备之间的通信距离;同时还解决了移动手机的空间困境和降低了产品的成本。 Rings of sound with a speaker of the present invention as an NFC antenna, antenna obtained a large area, thereby increasing the distance between the communication apparatus and the radiation efficiency of the device an electromagnetic signal; also solves the dilemma mobile handset space and reduced product the cost of.

领域的普通技术人员来说,在不脱离本发明创造构思的前提下,还可以做出改进,但这些均属于本发明的保护范围。 Of ordinary skill in the art, without departing from the concept of the present invention to create a premise, further improvements can be made, but these all fall within the scope of the present invention.

Claims (2)

1、一种制作近场通信天线的方法,其特征在于:该方法的步骤包括: (1)、提供一内部已预先嵌入近场通信射频功放输出电路的移动通信设备,该近场通信射频功放输出电路中包括有电容; (2)、提供一应用于所述移动通信设备内的扬声器,该扬声器内包括有音圈; (3)、从扬声器的音圈上引出两个接线端,并使此两个接线端接入所述的近场通信射频功放输出电路,扬声器的音圈与该近场通信射频功放输出电路中的电容构成谐振电路,从而实现通过将扬声器的音圈作为近场通信的天线发射出电磁波信号。 1, a method of fabricating a near field communication antenna, characterized in that: the method comprises the step of: (1) providing a pre-embedded inside a mobile communication device near field communication RF power amplifier output circuit, the NFC RFPA the output circuit includes a capacitor; (2) providing the speaker of the mobile communication device is applied to an internal speaker which includes a voice coil; (3), drawn from the two terminals of the speaker voice coil, and this access to the two terminals of the near field communication circuit output RF power amplifier, the voice coil loudspeaker with the NFC RF power amplifier output circuit capacitor form a resonance circuit, so that the voice coil is achieved by the speaker as a near field communication the antenna emits electromagnetic signals.
2、 根据权利要求1所述的制作近场通信天线的方法,其特征在于: 所述的近场通信射频功放输出电路中的电容设置于扬声器内固定音圏的盆架上。 2. The method of fabricating a near field communication antenna according to claim 1, wherein: the capacitor is provided a near field communication RF power amplifier output circuit according to the speaker frame is fixed in the rings of the sound.
CN 200810065177 2008-01-11 2008-01-11 Method for making near-field communication aerial CN101232124A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102082838A (en) * 2011-01-24 2011-06-01 中兴通讯股份有限公司 Wireless communication device
CN101719586B (en) 2009-12-29 2012-12-12 深圳市信维通信股份有限公司 Communication device, horn and antenna assembly thereof
WO2013159429A1 (en) * 2012-04-27 2013-10-31 中兴通讯股份有限公司 Nfc communication module
CN103515698A (en) * 2012-06-28 2014-01-15 比亚迪股份有限公司 NFC (Near Field Communication) antenna and electronic equipment
CN104009295A (en) * 2013-02-26 2014-08-27 深圳富泰宏精密工业有限公司 Near-field communication antenna and portable electronic device with antenna
US8909162B2 (en) 2012-09-07 2014-12-09 Infineon Technologies Ag System and method for transmitting a radio frequency signal through a speaker coil
US9024576B2 (en) 2011-11-17 2015-05-05 Nokia Technologies Oy Inductive charging of a rechargeable battery
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
US9379777B2 (en) 2012-05-07 2016-06-28 Nokia Technologies Oy Near field communication circuitry used for hearing aid compatibility
US9401768B2 (en) 2011-09-16 2016-07-26 Nokia Technologies Oy Near field communication apparatus
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
CN107112635A (en) * 2014-11-13 2017-08-29 株式会社Hctm Mobile device coil form loop aerial

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101719586B (en) 2009-12-29 2012-12-12 深圳市信维通信股份有限公司 Communication device, horn and antenna assembly thereof
CN102082838A (en) * 2011-01-24 2011-06-01 中兴通讯股份有限公司 Wireless communication device
WO2012100486A1 (en) * 2011-01-24 2012-08-02 中兴通讯股份有限公司 Wireless communication equipment
US9401768B2 (en) 2011-09-16 2016-07-26 Nokia Technologies Oy Near field communication apparatus
US9024576B2 (en) 2011-11-17 2015-05-05 Nokia Technologies Oy Inductive charging of a rechargeable battery
WO2013159429A1 (en) * 2012-04-27 2013-10-31 中兴通讯股份有限公司 Nfc communication module
US9379777B2 (en) 2012-05-07 2016-06-28 Nokia Technologies Oy Near field communication circuitry used for hearing aid compatibility
CN103515698A (en) * 2012-06-28 2014-01-15 比亚迪股份有限公司 NFC (Near Field Communication) antenna and electronic equipment
US8909162B2 (en) 2012-09-07 2014-12-09 Infineon Technologies Ag System and method for transmitting a radio frequency signal through a speaker coil
CN104009295B (en) * 2013-02-26 2018-04-24 深圳富泰宏精密工业有限公司 Near-field communication aerial and the portable electron device with the antenna
CN104009295A (en) * 2013-02-26 2014-08-27 深圳富泰宏精密工业有限公司 Near-field communication antenna and portable electronic device with antenna
CN105099523A (en) * 2014-05-15 2015-11-25 中兴通讯股份有限公司 Near filed communication apparatus and work method thereof, and mobile terminal
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
CN107112635A (en) * 2014-11-13 2017-08-29 株式会社Hctm Mobile device coil form loop aerial
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

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