[go: up one dir, main page]

WO2018153019A1 - Antenne nfc et dispositif terminal - Google Patents

Antenne nfc et dispositif terminal Download PDF

Info

Publication number
WO2018153019A1
WO2018153019A1 PCT/CN2017/095024 CN2017095024W WO2018153019A1 WO 2018153019 A1 WO2018153019 A1 WO 2018153019A1 CN 2017095024 W CN2017095024 W CN 2017095024W WO 2018153019 A1 WO2018153019 A1 WO 2018153019A1
Authority
WO
WIPO (PCT)
Prior art keywords
nfc antenna
nfc
phase shifting
antenna coils
phase
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.)
Ceased
Application number
PCT/CN2017/095024
Other languages
English (en)
Chinese (zh)
Inventor
孙玉新
张小伟
王吉康
储嘉慧
侯猛
杨小丽
王家明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201780005367.4A priority Critical patent/CN108701890A/zh
Publication of WO2018153019A1 publication Critical patent/WO2018153019A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • 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
    • 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
    • H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
    • 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
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • 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
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
    • H04B5/43—Antennas

Definitions

  • the embodiments of the present invention relate to the field of communications, and in particular, to an NFC antenna and a terminal device.
  • NFC Near Field Communication
  • the NFC-enabled terminal device can be used as an airport check-in verification, a building access key, a traffic card, and a payment card.
  • the space of the NFC antenna architecture is being compressed, which inevitably affects the area of the NFC card, and the NFC card area is limited, resulting in poor experience of the user using the NFC function of the terminal device.
  • the embodiments of the present invention provide an NFC antenna and a terminal device, which are used to solve the problem that the NFC card swipe area is limited, and the user experience of using the NFC function of the terminal device is poor.
  • an embodiment of the present application provides an NFC antenna, including: an NFC signal source, N NFC antenna coils, and N-1 phase shifting modules, where N ⁇ 2 and an integer; N the NFCs An antenna coil is arranged in an order, and one phase shifting module is connected between two adjacent NFC antenna coils; the NFC signal source is connected to a feeding point of any one of the N NFC antenna coils .
  • the phase shifting module comprises: a phase shifter or a phase shifting circuit.
  • the N NFC antenna coils are respectively provided with a coil grounding point, the coil grounding point is connected to a grounding point of the main board, and between the coil grounding point and the grounding point of the main board A filter is provided.
  • the filter comprises: a band pass filter or a band stop filter.
  • a matching circuit is further disposed between the NFC antenna coil and the phase shifting module.
  • the NFC antenna coil is at least one of the following: a metal bezel and a bracket combination.
  • the embodiment of the present application provides a terminal device, including the NFC antenna according to the above first aspect.
  • the NFC antenna provided by the embodiment of the present invention connects the N NFC antenna coils by using a phase shifting module, and maintains the current directions of the N NFC antenna coils to be uniform, forming a current closed loop of the N antenna coils, and expanding the current closed loop.
  • the effective card swipe area of the NFC antenna is expanded, and the experience effect of the user using the NFC function of the terminal device is improved.
  • FIG. 1 is a schematic structural diagram of an NFC antenna according to an embodiment of the present invention.
  • FIG. 2 is a topological diagram of an NFC antenna according to an embodiment of the present invention.
  • FIG. 3 is a topological diagram of an NFC antenna according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an RC phase shifting circuit according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a matching circuit according to an embodiment of the present invention.
  • the embodiment of the present invention provides an NFC antenna, which is applied to a terminal device.
  • the terminal device may be, but not limited to, a smart phone, a tablet computer, or the like.
  • the NFC antenna provided by the embodiment of the present invention includes: an NFC signal source, N NFC antenna coils, and N-1 phase shifting modules, where N ⁇ 2 and an integer; N NFC antenna coils are arranged in an orderly manner according to the architecture, and A phase shifting module is connected between two adjacent NFC antenna coils; the NFC signal source is connected to a feeding point of any one of the N NFC antenna coils.
  • FIG. 1 is a schematic structural diagram of an NFC antenna according to an embodiment of the present invention.
  • an NFC antenna including two NFC antenna coils is used as an example.
  • the NFC antenna includes: an NFC signal source and two NFCs.
  • An antenna coil (ANT1 and ANT2) and a phase shifting module are described below.
  • the NFC antenna includes two NFC antenna coils and a phase shifting module.
  • the NFC antenna of this embodiment specifically includes:
  • Two NFC antenna coils are arranged in an orderly manner, and one phase shifting module is connected between adjacent two NFC antenna coils; one loop grounding point and one feeding point are arranged on each NFC antenna coil, and the NFC signal source is connected to At the feed point of any one of the two NFC antenna coils.
  • the NFC antenna coil can be set according to the architecture of the terminal device (for example, according to the form of the terminal device antenna), and in the embodiment, the NFC antenna coils are connected in sequence, so two NFCs need to be set.
  • the order of the antenna coils one-way connection between each NFC antenna coil), such as 2, 3, 4, etc. of NFC antenna coils, when there are 3 NFC antenna coils (ANT1, ANT2 and ANT3), ANT1 ANT2 and ANT3 are connected in one direction, and one phase shifting module is connected between ANT1 and ANT2, and one phase shifting module is connected between ANT2 and ANT3.
  • the phase shifting module comprises: a phase shifter or a phase shifting circuit, wherein the phase shifting module can make the current directions in the two NFC antenna coils coincide, that is, the ANT1 and the ANT2 form a closed loop current in series. Loop.
  • FIG. 2 is a topological diagram of an NFC antenna according to an embodiment of the present invention.
  • ANT1 and ANT2 are arranged in an orderly manner, and phase shifting modules A, ANT1 and ANT2 are disposed adjacent to ANT1 and ANT2.
  • the connection relationship is established by the phase shifting module A, and the current is offset at the contact point of the ANT1, ANT2 and the phase shifting module A.
  • the phase shifting module A places the ANT1 and the phase shifting module A
  • the current is phase-shifted so that the current of ANT1 flows into ANT2, and the current directions in ANT1 and ANT2 are kept the same; at the contact point of the upper half of ANT2, phase-shifting module A will ANT2 and phase-shifting module A
  • the current is phase-shifted to cause the current of ANT2 to flow into ANT1, and keep the current directions in ANT1 and ANT2 consistent, thereby expanding the current closed-loop loop of one antenna coil into two antenna coils in the prior art.
  • the current closed-loop loop and the expansion of the current closed-loop loop expand the effective swipe area of the NFC antenna and improve the user experience of using the NFC function of the terminal device.
  • FIG. 3 is a topological diagram of another NFC antenna according to an embodiment of the present invention, where the NFC antenna includes three NFC antenna coils (ANT1, ANT2, and ANT3) and 2 phase shifts Module, ANT1 and ANT2 are connected to a phase shifting module, and ANT2 and ANT3 are connected to a phase shifting module. At the junction of ANT1 and ANT2, the current in ANT1 is in the ANT2 with the action of the phase shifting module.
  • ANT1, ANT2, and ANT3 the current in ANT1 is in the ANT2 with the action of the phase shifting module.
  • the junction is subjected to phase shift processing so that the current of ANT1 flows into ANT2, and the current directions in ANT1 and ANT2 are kept the same; at the junction of ANT2 and ANT3, the current in ANT2 is operated by the action of the phase shifting module.
  • the phase of ANT3 is phase-shifted so that the current of ANT2 flows into ANT3, and the current direction of ANT2 and ANT3 is kept the same.
  • the current of ANT3 flows into ANT2, and the current of ANT3 flows into ANT1, and ANT1 and ANT2 are performed.
  • the phase shifting circuit may be: an RC phase shifting circuit, and the RC phase shifting circuit specifically includes: a series circuit and a parallel capacitor to form an RC shift Phase circuit, ANT1 is connected to the input terminal U of the RC phase shifting circuit, ANT2 is connected to the output terminal U i of the RC phase shifting circuit, and the current of the ANT1 is phase-deflected by the RC phase shifting circuit to flow to the ANT2.
  • the phase shifting circuit may be other circuits having a current phase offset in addition to the RC phase shifting circuit, which is not specifically limited in this embodiment.
  • the function of the phase shifting module is to deflect the current of the NFC antenna coil.
  • the deflection angle of the current phase is 180°, and, for example, when the number of NFC antenna coils is three.
  • the deflection angle of the current phase can be set according to the positions of the three NFC antenna coils.
  • the current phase of the ANT1 at the junction with the ANT2 is 90°, and the current phase of the ANT2 is connected to the ANT3.
  • the deflection angle of the current is 180°. Therefore, the deflection angle of the current phase can be set according to the architecture of the NFC antenna, which is not limited in this embodiment.
  • two NFC antenna coils are respectively provided with a coil grounding point, and the coil grounding point is connected to a grounding point of the main board, and a filter is further disposed between the coil grounding point and the grounding point of the main board.
  • a filter is further disposed between the coil grounding point and the grounding point of the main board.
  • the filter comprises: a band pass filter or a band stop filter.
  • phase shifter or phase shifting circuit By connecting the coil grounding point of the NFC antenna coil to the grounding point of the main board area, and setting a band pass or band stop (NFC operating band) filter between them to realize the return current in the main board area return path, phase shifter or phase shifting circuit There is a low-pass effect in the design process, and the band-passing direction is in the NFC operating band, and the band-stop is high-frequency above 500MHz; the grounding point of the main board area passes the band-pass or band-stop filter to guide the NFC current return path to ensure the NFC signal. There is no distortion during transmission.
  • NFC operating band band pass or band stop
  • a matching circuit is further disposed between the NFC antenna coil and the phase shifting module.
  • FIG. 5 shows a schematic diagram of a matching circuit including an input terminal U and an output terminal U i .
  • the feed point of the ANT 1 is connected to the input terminal U of the matching circuit.
  • the output terminal U i is connected to the NFC signal source; the feed point of the ANT2 is connected to the input terminal U of the matching circuit, and the output terminal U i is connected to the phase shifting module, thereby achieving impedance matching between the NFC coil and the chip.
  • the NFC antenna coil may be one of the following: a metal frame and a bracket combination.
  • the NFC antenna coil can be designed with a metal frame; the NFC antenna coil can also be a combination of a metal frame and a bracket, for example, the bracket can be laser formed (Laser-Direct-structuring, LDS) or Flexible Printed Circuit (FPC); NFC antenna coils can also be realized by metal frame, LDS process and FPC process.
  • LDS Laser-Direct-structuring
  • FPC Flexible Printed Circuit
  • An embodiment of the present invention further provides a terminal device, including the foregoing NFC antenna.
  • the terminal device in this embodiment may be, but not limited to, a smart phone, a tablet computer, etc.
  • the NFC antenna when the terminal device is a metal structure, the NFC antenna may be implemented by using a metal frame, or a combination of a metal frame and a bracket;
  • the NFC antenna can be implemented in the form of a bracket combination.
  • the NFC antenna may be separately configured or shared with other communication antennas, which is not specifically limited in this embodiment.
  • the terminal device can realize NFC function through NFC antenna, for example, as airport boarding verification, building access key, traffic card and payment card, etc., increasing the current closed loop area of the NFC antenna coil, expanding the effective card swipe area of the NFC antenna, and improving the user.
  • NFC feature of the terminal device.
  • the components in the device in the embodiment may be distributed in the device of the embodiment according to the embodiment, or may be correspondingly changed in one or more devices different from the embodiment.
  • the components of the above embodiments may be combined into one component or may be further split into a plurality of subcomponents.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

Les modes de réalisation de la présente invention concernent une antenne NFC et un dispositif terminal. L'antenne NFC comprend : une source de signal NFC, N bobines d'antenne NFC et N-1 modules de déphasage, où N ≥ 2 et N étant un nombre entier. Les N bobines d'antenne NFC sont disposées de manière ordonnée et un des modules de déphasage est connecté entre deux bobines d'antenne NFC adjacentes. La source de signal NFC est connectée à un point d'alimentation d'une quelconque bobine d'antenne NFC. Au moyen d'un module de déphasage, N bobines d'antenne NFC sont connectées et les directions du courant des N bobines d'antenne NFC sont maintenues afin d'être constantes, de manière à former une boucle de courant fermée des N bobines d'antenne. L'expansion de la boucle de courant fermée étend de manière correspondante la zone de balayage effective d'une antenne NFC et l'effet sur l'expérience utilisateur lors de l'utilisation de la fonction NFC d'un dispositif terminal est amélioré.
PCT/CN2017/095024 2017-02-27 2017-07-28 Antenne nfc et dispositif terminal Ceased WO2018153019A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780005367.4A CN108701890A (zh) 2017-02-27 2017-07-28 一种nfc天线及终端设备

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710109628 2017-02-27
CN201710109628.9 2017-02-27

Publications (1)

Publication Number Publication Date
WO2018153019A1 true WO2018153019A1 (fr) 2018-08-30

Family

ID=63253519

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/095024 Ceased WO2018153019A1 (fr) 2017-02-27 2017-07-28 Antenne nfc et dispositif terminal

Country Status (2)

Country Link
CN (1) CN108701890A (fr)
WO (1) WO2018153019A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110890616A (zh) * 2019-11-28 2020-03-17 维沃移动通信有限公司 一种电子设备
JP2021069132A (ja) * 2018-12-28 2021-04-30 株式会社村田製作所 アンテナ装置
CN112803147A (zh) * 2019-11-14 2021-05-14 华为技术有限公司 一种天线及移动终端

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI755675B (zh) 2020-01-09 2022-02-21 華碩電腦股份有限公司 近場通訊裝置及其標籤位置判斷方法
CN114142228A (zh) * 2021-12-31 2022-03-04 维沃移动通信有限公司 天线结构和电子设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102074788A (zh) * 2010-11-23 2011-05-25 惠州Tcl移动通信有限公司 一种nfc天线及使用该天线的手机
CN103457040A (zh) * 2012-05-31 2013-12-18 Nxp股份有限公司 可调天线
CN104681917A (zh) * 2013-12-03 2015-06-03 佳邦科技股份有限公司 双线圈的天线结构

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010066955A1 (fr) * 2008-12-11 2010-06-17 Yves Eray Circuit d'antenne rfid
CN101989676A (zh) * 2009-08-07 2011-03-23 西门子公司 用于无线射频识别系统的天线及其配置方法和无线射频识别读写器
CN201515004U (zh) * 2009-08-28 2010-06-23 中兴通讯股份有限公司 一种近场通信电子终端的天线装置
CN202308282U (zh) * 2011-08-15 2012-07-04 中兴通讯股份有限公司 一种近场通信和频率调制共用天线
CN102544709B (zh) * 2011-12-21 2014-07-30 上海坤锐电子科技有限公司 一种移动支付转接桥的通信距离均衡的转接桥天线
CN103515698A (zh) * 2012-06-28 2014-01-15 比亚迪股份有限公司 一种近场通讯天线及电子设备
CN103390802B (zh) * 2013-07-24 2016-05-25 深圳市江波龙电子有限公司 一种nfc天线模块、读卡器以及智能卡
CN105490009B (zh) * 2016-02-03 2018-08-28 深圳市信维通信股份有限公司 正交绕线型贴片式nfc天线及天线系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102074788A (zh) * 2010-11-23 2011-05-25 惠州Tcl移动通信有限公司 一种nfc天线及使用该天线的手机
CN103457040A (zh) * 2012-05-31 2013-12-18 Nxp股份有限公司 可调天线
CN104681917A (zh) * 2013-12-03 2015-06-03 佳邦科技股份有限公司 双线圈的天线结构

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021069132A (ja) * 2018-12-28 2021-04-30 株式会社村田製作所 アンテナ装置
JP7001182B2 (ja) 2018-12-28 2022-01-19 株式会社村田製作所 アンテナ装置
CN112803147A (zh) * 2019-11-14 2021-05-14 华为技术有限公司 一种天线及移动终端
CN112803147B (zh) * 2019-11-14 2023-05-05 华为技术有限公司 一种天线及移动终端
CN110890616A (zh) * 2019-11-28 2020-03-17 维沃移动通信有限公司 一种电子设备

Also Published As

Publication number Publication date
CN108701890A (zh) 2018-10-23

Similar Documents

Publication Publication Date Title
WO2018153019A1 (fr) Antenne nfc et dispositif terminal
CN104953289B (zh) 天线系统及应用该天线系统的通信终端
CN105514624B (zh) 一种移动终端天线系统及移动终端
US8907859B2 (en) Edge-emitting antennas for ultra slim wireless mobile devices
US10325708B2 (en) Spiral near field communication (NFC) antenna coil
EP2815354B1 (fr) Configuration d'antenne pour faciliter le couplage en champ proche
US9306283B2 (en) Antenna device and method for increasing loop antenna communication range
US10916834B2 (en) Conductive plate used as near field communication antenna and terminal
CN204760546U (zh) 天线系统及应用该天线系统的通信终端
US10680313B2 (en) Stacked antenna module
US12176602B2 (en) Electronic device
WO2019204988A1 (fr) Système d'antenne de communication en champ proche et dispositif terminal
EP3806238B1 (fr) Terminal mobile
JP2008108016A (ja) 通信装置及びそれを用いた携帯通信端末
US9997844B2 (en) Contactless millimeter wave coupler, an electronic apparatus and a connector cable
US10629988B2 (en) Antenna device and electronic device
US9917350B2 (en) Multi loop antenna module and portable device having the same
JP2006042268A (ja) 電子タグ認証装置、および電子タグとの通信調整方法
US20180090836A1 (en) Interface Module for Antenna of Communication Device
US9848281B2 (en) Enhancing data rate or range of near field communication using differential coil topology
US9401542B2 (en) Antenna arrangement
CN105356058A (zh) 一种电子设备及天线装置
CN105049093A (zh) 一种移动终端外壳和移动终端
CN207868397U (zh) 一种天线系统及终端
Liang et al. Compact differential‐fed dual‐band antenna via loading shorting pin

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17897625

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17897625

Country of ref document: EP

Kind code of ref document: A1