EP1158601A1 - Dispositif de support avec antenne à sensibilité réduite - Google Patents

Dispositif de support avec antenne à sensibilité réduite Download PDF

Info

Publication number
EP1158601A1
EP1158601A1 EP00110358A EP00110358A EP1158601A1 EP 1158601 A1 EP1158601 A1 EP 1158601A1 EP 00110358 A EP00110358 A EP 00110358A EP 00110358 A EP00110358 A EP 00110358A EP 1158601 A1 EP1158601 A1 EP 1158601A1
Authority
EP
European Patent Office
Prior art keywords
antenna
shield
carrier element
shields
point
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.)
Withdrawn
Application number
EP00110358A
Other languages
German (de)
English (en)
Inventor
Gérard Salzgeber
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.)
Continental Automotive Switzerland AG
Original Assignee
Haeni Prolectron AG
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 Haeni Prolectron AG filed Critical Haeni Prolectron AG
Priority to EP00110358A priority Critical patent/EP1158601A1/fr
Priority to EP01903627A priority patent/EP1287585B1/fr
Priority to DE50101086T priority patent/DE50101086D1/de
Priority to AT01903627T priority patent/ATE255771T1/de
Priority to PCT/EP2001/000097 priority patent/WO2001089034A1/fr
Publication of EP1158601A1 publication Critical patent/EP1158601A1/fr
Priority to US10/292,764 priority patent/US6637665B2/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01Q1/2225—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 active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/526—Electromagnetic shields
    • 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
    • H01Q7/04—Screened antennas

Definitions

  • the present invention relates to a carrier element for a Antenna according to the preamble of claim 1.
  • Smart cards or chip cards are formed which e.g. out U.S. 5,844,244 are known. Such cards are often called referred to as electronic tickets.
  • WO 98/26370 describes a wireless communication system portable receivers described in which the data transmission via the (magnetic) H field.
  • frequencies of 6.78 MHz, 13.5 MHz or 27 MHz are provided.
  • the term near field means that the so-called H-field component dominates.
  • the area of the near field is usually defined with a distance r for which the relationship r ⁇ 0.6 ⁇ ⁇ applies. ⁇ stands for the wavelength.
  • ⁇ 22 m, so that the near field conditions up to a distance of about 12 m are fulfilled.
  • the transmission using frequencies of the above examples would require large antennas with dimensions of several meters.
  • the maximum size of the antenna is determined by the dimensions of a device or a carrier element.
  • the receiving antenna must be reduced to the dimensions of a chip card, for example.
  • chip cards usually have dimensions of credit cards, namely 53 x 85mm 2 .
  • Such a strong reduction in the antenna size leads on the one hand to very low antenna reception voltages and on the other hand to an increased sensitivity of the antenna voltage to environmental influences.
  • the low sensitivity can usually be compensated for using a suitable amplifier pre-stage.
  • the energy consumption of such preliminary stages must be as small as possible.
  • the antenna voltage in the near field is inversely proportional to the third power of the distance between receiving antenna and transmitting antenna. For reasons of space, the number of turns of such antennas is limited.
  • the disorder can be, for example significantly reduced antenna voltage or a detuning the antenna. With an upset is a change designated the intended resonance frequency.
  • Performance can be linked is a particularly reliable Transfer required.
  • the present invention is therefore based on the object specify a support element for an antenna that is insensitive is due to interference from the environment.
  • FIG. 1a shows a chip card as carrier element 5 in the view.
  • the carrier element 5 is designed in multiple layers.
  • the Rectangle 3 gives the approximate extent of the layer mass (Ground layer). However, the mass layer does not need to be flat to be executed.
  • Components are on the carrier element 5 41 and 42 in a discrete or integrated version specified.
  • a loop antenna 11 - in the following only called antenna - is with seven turns along the The circumference of the carrier element 5 is arranged, the contacting takes place via the connections 12. For the sake of clarity are the other connections on the multi-layer support element 5 omitted and only two of the seven turns shown.
  • Shields 21 are hatched in FIG. 1a shown the turns of the antenna 11 above and below surround.
  • the turns would be the Antenna 11, however, invisible.
  • the number of turns of the Antenna 11 is determined by the geometry of the carrier element 5 as well as by running for reinforcement of the antenna voltage required preamplifier.
  • the antenna 11 is arranged in one plane.
  • electrical shields 21 are provided above and below the antenna windings. Above and below the antenna windings, the shield 21 or 21 1 and 21 2 , which is connected to a reference point 3, is attached, see FIG. 1b, which prevents the direct influence of the environment, ie a capacitive coupling to the winding. Such coupling acts as an antenna extension and this can result in a higher antenna voltage. Because of the detuning of the antenna 11 associated with this, this effect is undesirable and is eliminated with the shield 21 or 21 1 and 21 2 . The coupling takes place by attaching the shield 21 or 21 1 and 21 2 only through the magnetic component, namely with the H field, cf. Vector representation H in Figure 1a. The mass (ground layer) is usually chosen as the reference point 3.
  • the antenna 11 is resonant to the reception frequency voted, this vote can be done with a parallel connected capacitor (in the Figures not shown). Is a wider range If desired, the antenna can also be coupled in aperiodically become.
  • the distance between the shields 21 1 and 21 2 is approximately 0.6 to 1 mm. Depending on the application, the distance can also be greater than 1 mm.
  • the shields 21 1 and 21 2 must be separated at a point 22 in order to prevent a circulating current which would otherwise dampen the magnetic field to an unacceptably high degree.
  • the separation 22 in FIG. 1 a is arranged opposite the connections 12 of the antenna 11.
  • Epoxy resin FR4 can be used for the carrier material.
  • the other layers required for a chip card such as Ground (ground layer), L1, L2, etc. with the conductor tracks for the electronic components are not in FIG. 1b shown.
  • FIG. 2 shows a special embodiment of the arrangement and separation of the additional shield 61.
  • Such shields should be made as symmetrical as possible, for example by means of segments 61 I and 61 II . With a division into four quadrants, depending on the application, it may be useful to connect two of the four segments with the position ground (ground layer) in a point-symmetrical or mirror-symmetrical manner.
  • All shields 21 and 61 are made of thin copper foil or are designed as conductor tracks, the width of which is greater is than the width of the antenna turns.
  • the antenna windings are also in this embodiment as Conductor tracks executed.
  • the antenna voltage only changes by a few percent when approached by hand.
  • the antenna factor which is defined as the quotient antenna voltage by H field, is typically 10 Vm / A.
  • the hand sensitivity may depend on the one used Frequency by applying additional shielding layers can be further reduced.
  • the execution of the support element according to the invention is not limited to frame-shaped antennas.
  • the antenna are topologically equivalent forms as well possible, in particular the present invention can also be used for Ring antennas are designed.
  • the shield 21 may also be sufficient for the shield 21 to be attached only on one side.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Details Of Aerials (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Gyroscopes (AREA)
EP00110358A 2000-05-15 2000-05-15 Dispositif de support avec antenne à sensibilité réduite Withdrawn EP1158601A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP00110358A EP1158601A1 (fr) 2000-05-15 2000-05-15 Dispositif de support avec antenne à sensibilité réduite
EP01903627A EP1287585B1 (fr) 2000-05-15 2001-01-08 Element support destine a une antenne a faible effet capacitif de main
DE50101086T DE50101086D1 (de) 2000-05-15 2001-01-08 Trägerelement für eine antenne mit geringer handempfindlichkeit
AT01903627T ATE255771T1 (de) 2000-05-15 2001-01-08 Trägerelement für eine antenne mit geringer handempfindlichkeit
PCT/EP2001/000097 WO2001089034A1 (fr) 2000-05-15 2001-01-08 Element support destine a une antenne a faible effet capacitif de main
US10/292,764 US6637665B2 (en) 2000-05-15 2002-11-13 Carrier element for an antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00110358A EP1158601A1 (fr) 2000-05-15 2000-05-15 Dispositif de support avec antenne à sensibilité réduite

Publications (1)

Publication Number Publication Date
EP1158601A1 true EP1158601A1 (fr) 2001-11-28

Family

ID=8168723

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00110358A Withdrawn EP1158601A1 (fr) 2000-05-15 2000-05-15 Dispositif de support avec antenne à sensibilité réduite
EP01903627A Expired - Lifetime EP1287585B1 (fr) 2000-05-15 2001-01-08 Element support destine a une antenne a faible effet capacitif de main

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP01903627A Expired - Lifetime EP1287585B1 (fr) 2000-05-15 2001-01-08 Element support destine a une antenne a faible effet capacitif de main

Country Status (5)

Country Link
US (1) US6637665B2 (fr)
EP (2) EP1158601A1 (fr)
AT (1) ATE255771T1 (fr)
DE (1) DE50101086D1 (fr)
WO (1) WO2001089034A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013110625A1 (fr) * 2012-01-23 2013-08-01 Féinics Amatech Teoranta Décalage de protection et amélioration de couplage de cartes à puce métallisées
US9390364B2 (en) 2011-08-08 2016-07-12 Féinics Amatech Teoranta Transponder chip module with coupling frame on a common substrate for secure and non-secure smartcards and tags
US10518518B2 (en) 2013-01-18 2019-12-31 Féinics Amatech Teoranta Smart cards with metal layer(s) and methods of manufacture
US10552722B2 (en) 2014-08-10 2020-02-04 Féinics Amatech Teoranta Smartcard with coupling frame antenna
US10599972B2 (en) 2013-01-18 2020-03-24 Féinics Amatech Teoranta Smartcard constructions and methods
US10733494B2 (en) 2014-08-10 2020-08-04 Féinics Amatech Teoranta Contactless metal card constructions
US10824931B2 (en) 2012-08-30 2020-11-03 Féinics Amatech Teoranta Contactless smartcards with multiple coupling frames
US10867235B2 (en) 2011-08-08 2020-12-15 Féinics Amatech Teoranta Metallized smartcard constructions and methods
US10977542B2 (en) 2013-01-18 2021-04-13 Amtech Group Limited Industrial Estate Smart cards with metal layer(s) and methods of manufacture
US11341389B2 (en) 2013-01-18 2022-05-24 Amatech Group Limited Manufacturing metal inlays for dual interface metal cards
US11354560B2 (en) 2013-01-18 2022-06-07 Amatech Group Limited Smartcards with multiple coupling frames
US11354558B2 (en) 2013-01-18 2022-06-07 Amatech Group Limited Contactless smartcards with coupling frames
US11551051B2 (en) 2013-01-18 2023-01-10 Amatech Group Limiied Coupling frames for smartcards with various module opening shapes
US11928537B2 (en) 2013-01-18 2024-03-12 Amatech Group Limited Manufacturing metal inlays for dual interface metal cards

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003256789A (ja) * 2002-02-26 2003-09-12 Sony Corp メモリ装置及びメモリ収納装置
JP2005033413A (ja) * 2003-07-10 2005-02-03 Matsushita Electric Ind Co Ltd ループアンテナ及び非接触ｉｃカード読取／書込装置
JP2005176307A (ja) * 2003-11-19 2005-06-30 Matsushita Electric Ind Co Ltd アンテナ素子及びそれを用いたループアンテナ並びに無線通信媒体処理装置
EP1760828A1 (fr) * 2005-08-31 2007-03-07 Incard SA Appareil sans contact avec un circuit intégré
WO2007086809A1 (fr) * 2006-01-24 2007-08-02 Agency For Science, Technology And Research Antenne sur puce et procédé de fabrication de ladite antenne
KR100836536B1 (ko) * 2006-12-21 2008-06-10 한국과학기술원 컨덕터의 안테나에 대한 영향이 감소된 에스아이피 및 그설계 방법
US20130126622A1 (en) * 2011-08-08 2013-05-23 David Finn Offsetting shielding and enhancing coupling in metallized smart cards
EP2573871B1 (fr) 2010-09-07 2015-01-28 Murata Manufacturing Co., Ltd. Appareil d'antenne et appareil de terminal de communication
US9475086B2 (en) 2013-01-18 2016-10-25 Féinics Amatech Teoranta Smartcard with coupling frame and method of increasing activation distance of a transponder chip module
US9812782B2 (en) 2011-08-08 2017-11-07 Féinics Amatech Teoranta Coupling frames for RFID devices
US9798968B2 (en) 2013-01-18 2017-10-24 Féinics Amatech Teoranta Smartcard with coupling frame and method of increasing activation distance of a transponder chip module
US10783426B2 (en) 2012-08-30 2020-09-22 David Finn Dual-interface metal hybrid smartcard
US10248902B1 (en) 2017-11-06 2019-04-02 Féinics Amatech Teoranta Coupling frames for RFID devices
EP2849158B1 (fr) 2013-09-13 2019-02-27 Siemens Schweiz AG Ticket électronique avec protection anti-manipulation
FR3030908B1 (fr) * 2014-12-18 2016-12-09 Stmicroelectronics Rousset Antenne pour dispositif electronique
CN105870578A (zh) * 2015-02-11 2016-08-17 三星电机株式会社 包括利用连续导电边框的多频带天线的电子装置
KR102334607B1 (ko) 2016-06-15 2021-12-06 쓰리엠 이노베이티브 프로퍼티즈 컴파니 차폐형 rfid 안테나
WO2018234940A1 (fr) 2017-06-23 2018-12-27 3M Innovative Properties Company Dispositifs de détection sans fil comprenant une antenne en champ proche stable
EP3762871A4 (fr) 2018-03-07 2021-11-10 X-Card Holdings, LLC Carte métallique

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US3902177A (en) * 1972-09-19 1975-08-26 Taiyo Musen Co Ltd Antenna for direction finders
US5248989A (en) * 1988-02-04 1993-09-28 Unisan Ltd. Magnetic field concentrator

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US4251808A (en) * 1979-11-15 1981-02-17 Lichtblau G J Shielded balanced loop antennas for electronic security systems
US4373163A (en) * 1980-07-14 1983-02-08 I.D. Engineering, Inc. Loop antenna for security systems
US4751516A (en) * 1985-01-10 1988-06-14 Lichtblau G J Antenna system for magnetic and resonant circuit detection
US5442334A (en) * 1992-07-20 1995-08-15 Stoplift Corporation Security system having deactivatable security tag
US6295031B1 (en) * 1993-12-23 2001-09-25 Symbol Technologies, Inc. Memory card assembly having an integral antenna
EP0788069A3 (fr) 1996-02-01 2000-01-19 Kaba Schliesssysteme AG Porteur d'identification à porter sur soi
JPH09307329A (ja) * 1996-05-14 1997-11-28 Casio Comput Co Ltd アンテナ及びその製造方法並びにアンテナを備えた電 子機器又は電子時計
TW350054B (en) * 1996-11-29 1999-01-11 Mitsubishi Materials Corp Burglarproof label
FR2756953B1 (fr) 1996-12-10 1999-12-24 Innovatron Ind Sa Objet portatif telealimente pour la communication sans contact avec une borne

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Publication number Priority date Publication date Assignee Title
US3902177A (en) * 1972-09-19 1975-08-26 Taiyo Musen Co Ltd Antenna for direction finders
US5248989A (en) * 1988-02-04 1993-09-28 Unisan Ltd. Magnetic field concentrator

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9390364B2 (en) 2011-08-08 2016-07-12 Féinics Amatech Teoranta Transponder chip module with coupling frame on a common substrate for secure and non-secure smartcards and tags
US10867235B2 (en) 2011-08-08 2020-12-15 Féinics Amatech Teoranta Metallized smartcard constructions and methods
WO2013110625A1 (fr) * 2012-01-23 2013-08-01 Féinics Amatech Teoranta Décalage de protection et amélioration de couplage de cartes à puce métallisées
US10824931B2 (en) 2012-08-30 2020-11-03 Féinics Amatech Teoranta Contactless smartcards with multiple coupling frames
US10977542B2 (en) 2013-01-18 2021-04-13 Amtech Group Limited Industrial Estate Smart cards with metal layer(s) and methods of manufacture
US10599972B2 (en) 2013-01-18 2020-03-24 Féinics Amatech Teoranta Smartcard constructions and methods
US10518518B2 (en) 2013-01-18 2019-12-31 Féinics Amatech Teoranta Smart cards with metal layer(s) and methods of manufacture
US11037044B2 (en) 2013-01-18 2021-06-15 Amatech Group Limited Smartcard constructions and methods
US11341389B2 (en) 2013-01-18 2022-05-24 Amatech Group Limited Manufacturing metal inlays for dual interface metal cards
US11354560B2 (en) 2013-01-18 2022-06-07 Amatech Group Limited Smartcards with multiple coupling frames
US11354558B2 (en) 2013-01-18 2022-06-07 Amatech Group Limited Contactless smartcards with coupling frames
US11551051B2 (en) 2013-01-18 2023-01-10 Amatech Group Limiied Coupling frames for smartcards with various module opening shapes
US11568195B2 (en) 2013-01-18 2023-01-31 Amatech Group Limited Smart cards with metal layer(s) and methods of manufacture
US11836565B2 (en) 2013-01-18 2023-12-05 Amatech Group Limited Smartcards with multiple coupling frames
US11928537B2 (en) 2013-01-18 2024-03-12 Amatech Group Limited Manufacturing metal inlays for dual interface metal cards
US10733494B2 (en) 2014-08-10 2020-08-04 Féinics Amatech Teoranta Contactless metal card constructions
US10552722B2 (en) 2014-08-10 2020-02-04 Féinics Amatech Teoranta Smartcard with coupling frame antenna

Also Published As

Publication number Publication date
ATE255771T1 (de) 2003-12-15
DE50101086D1 (de) 2004-01-15
EP1287585B1 (fr) 2003-12-03
WO2001089034A1 (fr) 2001-11-22
EP1287585A1 (fr) 2003-03-05
US6637665B2 (en) 2003-10-28
US20030057288A1 (en) 2003-03-27

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