AU2001294713A1 - Method and apparatus for detuning a resonant circuit of a remotely powered device - Google Patents

Method and apparatus for detuning a resonant circuit of a remotely powered device

Info

Publication number
AU2001294713A1
AU2001294713A1 AU2001294713A AU9471301A AU2001294713A1 AU 2001294713 A1 AU2001294713 A1 AU 2001294713A1 AU 2001294713 A AU2001294713 A AU 2001294713A AU 9471301 A AU9471301 A AU 9471301A AU 2001294713 A1 AU2001294713 A1 AU 2001294713A1
Authority
AU
Australia
Prior art keywords
detuning
resonant circuit
powered device
remotely powered
remotely
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.)
Abandoned
Application number
AU2001294713A
Inventor
Samuel Alexander
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.)
Microchip Technology Inc
Original Assignee
Microchip Technology Inc
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 Microchip Technology Inc filed Critical Microchip Technology Inc
Publication of AU2001294713A1 publication Critical patent/AU2001294713A1/en
Abandoned legal-status Critical Current

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
    • G06K19/0701—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 at least one of the integrated circuit chips comprising an arrangement for power management
    • 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
    • G06K19/0701—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 at least one of the integrated circuit chips comprising an arrangement for power management
    • G06K19/0715—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 at least one of the integrated circuit chips comprising an arrangement for power management the arrangement including means to regulate power transfer to the integrated circuit
    • 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
AU2001294713A 2000-09-29 2001-09-27 Method and apparatus for detuning a resonant circuit of a remotely powered device Abandoned AU2001294713A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US67173800A 2000-09-29 2000-09-29
US09671738 2000-09-29
PCT/US2001/030022 WO2002027650A1 (en) 2000-09-29 2001-09-27 Method and apparatus for detuning a resonant circuit of a remotely powered device

Publications (1)

Publication Number Publication Date
AU2001294713A1 true AU2001294713A1 (en) 2002-04-08

Family

ID=24695686

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001294713A Abandoned AU2001294713A1 (en) 2000-09-29 2001-09-27 Method and apparatus for detuning a resonant circuit of a remotely powered device

Country Status (2)

Country Link
AU (1) AU2001294713A1 (en)
WO (1) WO2002027650A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002950973A0 (en) 2002-08-22 2002-09-12 Magellan Technology Pty Ltd A radio frequency identification ("rfid") device
JP2004166384A (en) * 2002-11-12 2004-06-10 Sharp Corp Non-contact power feeding system, electromagnetic coupling characteristic adjustment method therein and power feeder
DE602004009462T2 (en) 2004-12-16 2008-07-24 Em Microelectronic-Marin S.A., Marin Radiofrequency transponder, in particular for UHF, with an ESD protection circuit
DE102005020101A1 (en) 2005-04-29 2007-01-25 Giesecke & Devrient Gmbh Portable data carrier and method for operating a portable data carrier
EP2610785A1 (en) * 2011-12-27 2013-07-03 ST-Ericsson SA Near field communication method between a tag and a reader powering the tag

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE98025T1 (en) * 1987-07-31 1993-12-15 Texas Instruments Deutschland TRANSPONDER ARRANGEMENT.
DE4004196C1 (en) * 1990-02-12 1991-04-11 Texas Instruments Deutschland Gmbh, 8050 Freising, De Transponder transferring stored measurement data to interrogator - operates without battery using capacitor charged by rectified HF pulses
FR2756953B1 (en) * 1996-12-10 1999-12-24 Innovatron Ind Sa PORTABLE TELEALIMENTAL OBJECT FOR CONTACTLESS COMMUNICATION WITH A TERMINAL
GB2321726A (en) * 1997-01-30 1998-08-05 Motorola Inc Apparatus and method for regulating power on a contactless portable data carrier
FR2782209A1 (en) * 1998-08-06 2000-02-11 Innovatron Electronique Inductively-read transponder for access control or payment, switches in capacitor to detune resonant circuit if supply voltage derived from read signal is excessive

Also Published As

Publication number Publication date
WO2002027650A1 (en) 2002-04-04

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