FR3136121B1 - Carte sans contact téléalimentée - Google Patents

Carte sans contact téléalimentée Download PDF

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Publication number
FR3136121B1
FR3136121B1 FR2205059A FR2205059A FR3136121B1 FR 3136121 B1 FR3136121 B1 FR 3136121B1 FR 2205059 A FR2205059 A FR 2205059A FR 2205059 A FR2205059 A FR 2205059A FR 3136121 B1 FR3136121 B1 FR 3136121B1
Authority
FR
France
Prior art keywords
antenna
electrical power
capacitive element
power received
contactless card
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.)
Active
Application number
FR2205059A
Other languages
English (en)
Other versions
FR3136121A1 (fr
Inventor
Franck Montaudon
Julien Goulier
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.)
STMicroelectronics SA
STMicroelectronics Grenoble 2 SAS
Original Assignee
STMicroelectronics SA
STMicroelectronics Grenoble 2 SAS
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 STMicroelectronics SA, STMicroelectronics Grenoble 2 SAS filed Critical STMicroelectronics SA
Priority to FR2205059A priority Critical patent/FR3136121B1/fr
Priority to US18/316,964 priority patent/US20230385593A1/en
Publication of FR3136121A1 publication Critical patent/FR3136121A1/fr
Application granted granted Critical
Publication of FR3136121B1 publication Critical patent/FR3136121B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • G06K19/0726—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs the arrangement including a circuit for tuning the resonance frequency of an antenna on the record carrier
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/07773—Antenna details

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

Carte sans contact téléalimentée La présente description concerne un dispositif électronique destiné à être connecté à une antenne (9) de capture d'un champ électromagnétique modulé en amplitude, comprenant un premier circuit électronique (30) comprenant un élément capacitif à capacité variable et configuré pour coupler ledit élément capacitif à l'antenne, et pour, par itérations successives, mesurer un premier signal analogique (I_sense) représentatif de la variation de la puissance électrique instantanée reçue par l'antenne ou de la puissance électrique instantanée reçue par l'antenne, et modifier la capacité dudit élément capacitif jusqu'à ce que l'amplitude la puissance électrique instantanée reçue par l'antenne soit maximale. Figure pour l'abrégé : Fig. 3
FR2205059A 2022-05-25 2022-05-25 Carte sans contact téléalimentée Active FR3136121B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR2205059A FR3136121B1 (fr) 2022-05-25 2022-05-25 Carte sans contact téléalimentée
US18/316,964 US20230385593A1 (en) 2022-05-25 2023-05-12 Remote powered contactless card

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2205059 2022-05-25
FR2205059A FR3136121B1 (fr) 2022-05-25 2022-05-25 Carte sans contact téléalimentée

Publications (2)

Publication Number Publication Date
FR3136121A1 FR3136121A1 (fr) 2023-12-01
FR3136121B1 true FR3136121B1 (fr) 2024-06-14

Family

ID=83593969

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2205059A Active FR3136121B1 (fr) 2022-05-25 2022-05-25 Carte sans contact téléalimentée

Country Status (2)

Country Link
US (1) US20230385593A1 (fr)
FR (1) FR3136121B1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4438286C2 (de) * 1994-10-26 2002-09-12 Siemens Ag System zur kontaktlosen Energie- und Datenübertragung
GB2321726A (en) * 1997-01-30 1998-08-05 Motorola Inc Apparatus and method for regulating power on a contactless portable data carrier
GB0206982D0 (en) * 2002-03-25 2002-05-08 Melexis Nv Temperature sensitive radio frequency device
GB201909374D0 (en) * 2019-06-28 2019-08-14 Drayson Tech Europe Ltd Impedance matching in near-field RF communication devices

Also Published As

Publication number Publication date
US20230385593A1 (en) 2023-11-30
FR3136121A1 (fr) 2023-12-01

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Effective date: 20231201

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