TW330276B - Diode receiver for radio frequency transponder capable of supplying power to the electronics of the RF tag in addition to have tag power rectification circuit - Google Patents

Diode receiver for radio frequency transponder capable of supplying power to the electronics of the RF tag in addition to have tag power rectification circuit

Info

Publication number
TW330276B
TW330276B TW086102285A TW86102285A TW330276B TW 330276 B TW330276 B TW 330276B TW 086102285 A TW086102285 A TW 086102285A TW 86102285 A TW86102285 A TW 86102285A TW 330276 B TW330276 B TW 330276B
Authority
TW
Taiwan
Prior art keywords
tag
power
circuit
radio frequency
electronics
Prior art date
Application number
TW086102285A
Other languages
English (en)
Inventor
Joseph Friedman Daniel
Kent Heinrich Harley
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Application granted granted Critical
Publication of TW330276B publication Critical patent/TW330276B/zh

Links

Classifications

    • H04B5/77
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/067Record 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
    • G06K19/07Record 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
    • G06K19/0701Record 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
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/067Record 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
    • G06K19/07Record 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
    • G06K19/0723Record 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
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0008General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10237Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the reader and the record carrier being capable of selectively switching between reader and record carrier appearance, e.g. in near field communication [NFC] devices where the NFC device may function as an RFID reader or as an RFID tag
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/75Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
    • G01S13/758Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using a signal generator powered by the interrogation signal
TW086102285A 1995-08-31 1997-02-25 Diode receiver for radio frequency transponder capable of supplying power to the electronics of the RF tag in addition to have tag power rectification circuit TW330276B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/521,898 US5606323A (en) 1995-08-31 1995-08-31 Diode modulator for radio frequency transponder
US08/733,684 US5889489A (en) 1995-08-31 1996-10-17 Diode receiver for radio frequency transponder

Publications (1)

Publication Number Publication Date
TW330276B true TW330276B (en) 1998-04-21

Family

ID=24078603

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086102285A TW330276B (en) 1995-08-31 1997-02-25 Diode receiver for radio frequency transponder capable of supplying power to the electronics of the RF tag in addition to have tag power rectification circuit

Country Status (4)

Country Link
US (2) US5606323A (zh)
JP (1) JP3940186B2 (zh)
KR (2) KR100221749B1 (zh)
TW (1) TW330276B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI480806B (zh) * 2008-09-19 2015-04-11 Semiconductor Energy Lab 半導體裝置以及使用該半導體裝置的無線標籤

Families Citing this family (104)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5864368A (en) * 1995-02-28 1999-01-26 Sony Corporation Picture signal editing and encoding method and apparatus, signal recording medium and picture signal decoding method and apparatus
US7002475B2 (en) * 1997-12-31 2006-02-21 Intermec Ip Corp. Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag
US5939984A (en) * 1997-12-31 1999-08-17 Intermec Ip Corp. Combination radio frequency transponder (RF Tag) and magnetic electronic article surveillance (EAS) material
US6130602A (en) 1996-05-13 2000-10-10 Micron Technology, Inc. Radio frequency data communications device
US6696879B1 (en) 1996-05-13 2004-02-24 Micron Technology, Inc. Radio frequency data communications device
US6774685B2 (en) 1996-05-13 2004-08-10 Micron Technology, Inc. Radio frequency data communications device
US6836468B1 (en) 1996-05-13 2004-12-28 Micron Technology, Inc. Radio frequency data communications device
US6804726B1 (en) * 1996-05-22 2004-10-12 Geovector Corporation Method and apparatus for controlling electrical devices in response to sensed conditions
US6362737B1 (en) * 1998-06-02 2002-03-26 Rf Code, Inc. Object Identification system with adaptive transceivers and methods of operation
US5777561A (en) * 1996-09-30 1998-07-07 International Business Machines Corporation Method of grouping RF transponders
US6057779A (en) * 1997-08-14 2000-05-02 Micron Technology, Inc. Method of controlling access to a movable container and to a compartment of a vehicle, and a secure cargo transportation system
US6329915B1 (en) * 1997-12-31 2001-12-11 Intermec Ip Corp RF Tag having high dielectric constant material
US6177872B1 (en) 1998-03-13 2001-01-23 Intermec Ip Corp. Distributed impedance matching circuit for high reflection coefficient load
US6281794B1 (en) 1998-01-02 2001-08-28 Intermec Ip Corp. Radio frequency transponder with improved read distance
US6249227B1 (en) 1998-01-05 2001-06-19 Intermec Ip Corp. RFID integrated in electronic assets
US7427912B1 (en) 1998-01-08 2008-09-23 Intermec Ip Corp. Method and system for storage and recovery of vital information on radio frequency transponders
US6104291A (en) * 1998-01-09 2000-08-15 Intermec Ip Corp. Method and apparatus for testing RFID tags
US6356535B1 (en) * 1998-02-04 2002-03-12 Micron Technology, Inc. Communication systems and methods of communicating
US5969691A (en) * 1998-02-10 1999-10-19 Gilbarco Inc. Fuel dispenser transponder antenna arrangement
US6072801A (en) 1998-02-19 2000-06-06 Micron Technology, Inc. Method of addressing messages, method of establishing wireless communications, and communications system
US6275476B1 (en) 1998-02-19 2001-08-14 Micron Technology, Inc. Method of addressing messages and communications system
US6441740B1 (en) 1998-02-27 2002-08-27 Intermec Ip Corp. Radio frequency identification transponder having a reflector
US6639509B1 (en) 1998-03-16 2003-10-28 Intermec Ip Corp. System and method for communicating with an RFID transponder with reduced noise and interference
US6121878A (en) * 1998-05-01 2000-09-19 Intermec Ip Corp. System for controlling assets
US6420961B1 (en) * 1998-05-14 2002-07-16 Micron Technology, Inc. Wireless communication systems, interfacing devices, communication methods, methods of interfacing with an interrogator, and methods of operating an interrogator
US6154137A (en) 1998-06-08 2000-11-28 3M Innovative Properties Company Identification tag with enhanced security
GB9816012D0 (en) * 1998-07-22 1998-09-23 Habib Nagy A Treatment using implantable devices
KR100437007B1 (ko) * 1998-09-11 2004-06-23 모토로라 인코포레이티드 무선 주파수 식별 태그 장치 및 관련 방법
US6201474B1 (en) 1998-10-21 2001-03-13 Intermec Ip Corp. Magnetic tape storage media having RFID transponders
US6100804A (en) * 1998-10-29 2000-08-08 Intecmec Ip Corp. Radio frequency identification system
EP0999517B1 (fr) * 1998-11-03 2003-06-04 EM Microelectronic-Marin SA Transpondeur actif rechargeable
US6236223B1 (en) 1998-11-09 2001-05-22 Intermec Ip Corp. Method and apparatus for wireless radio frequency testing of RFID integrated circuits
US8636648B2 (en) 1999-03-01 2014-01-28 West View Research, Llc Endoscopic smart probe
US10973397B2 (en) 1999-03-01 2021-04-13 West View Research, Llc Computerized information collection and processing apparatus
SG76615A1 (en) * 1999-04-16 2000-11-21 Univ Singapore An rf transponder
US8065155B1 (en) 1999-06-10 2011-11-22 Gazdzinski Robert F Adaptive advertising apparatus and methods
US7071824B2 (en) * 1999-07-29 2006-07-04 Micron Technology, Inc. Radio frequency identification devices, remote communication devices, identification systems, communication methods, and identification methods
US7710273B2 (en) * 1999-09-02 2010-05-04 Round Rock Research, Llc Remote communication devices, radio frequency identification devices, wireless communication systems, wireless communication methods, radio frequency identification device communication methods, and methods of forming a remote communication device
US6509825B1 (en) * 1999-09-24 2003-01-21 Microchip Technology Incorporated Integrated circuit device having a self-biased, single pin radio frequency signal input
DE19958265A1 (de) * 1999-12-05 2001-06-21 Iq Mobil Electronics Gmbh Drahtloses Energieübertragungssystem mit erhöhter Ausgangsspannung
FR2802738A1 (fr) * 1999-12-15 2001-06-22 Circe Dispositif de lecture de transpondeur
US6838989B1 (en) 1999-12-22 2005-01-04 Intermec Ip Corp. RFID transponder having active backscatter amplifier for re-transmitting a received signal
US7259654B2 (en) * 2000-02-28 2007-08-21 Magellan Technology Pty Limited Radio frequency identification transponder
US7248145B2 (en) * 2000-02-28 2007-07-24 Magellan Technology Oty Limited Radio frequency identification transponder
US6335685B1 (en) * 2000-03-09 2002-01-01 International Business Machines Corporation Apparatus and method for locating containers and contents of containers using radio frequency tags
JP4700209B2 (ja) * 2000-03-21 2011-06-15 ラディ・メディカル・システムズ・アクチェボラーグ 受動バイオテレメトリ
FR2808634A1 (fr) 2000-05-05 2001-11-09 St Microelectronics Sa Amelioration de la capacite de demodulation d'un transpondeur electromagnetique
US7253717B2 (en) * 2000-11-29 2007-08-07 Mobile Technics Llc Method and system for communicating with and tracking RFID transponders
US6989750B2 (en) 2001-02-12 2006-01-24 Symbol Technologies, Inc. Radio frequency identification architecture
GB2372644B (en) * 2001-02-16 2005-02-23 Mitel Semiconductor Ab MOS circuit for lowering forward voltage of diodes
US6965298B2 (en) * 2001-03-09 2005-11-15 Sony Corporation Method and apparatus for facilitating communication between a user and a toy
US6870461B2 (en) * 2001-12-01 2005-03-22 Atmel Germany Gmbh Integrated receiving/backscattering arrangement for contactless data transmission
US7204425B2 (en) * 2002-03-18 2007-04-17 Precision Dynamics Corporation Enhanced identification appliance
ATE548757T1 (de) * 2002-06-11 2012-03-15 Nxp Bv Datenträger, der eine integrierte schaltung mit einer esd-schutzschaltung enthält
AU2003250618B2 (en) * 2002-08-22 2009-11-19 Sato Holdings Corporation An identification device and identification system
AU2002950973A0 (en) * 2002-08-22 2002-09-12 Magellan Technology Pty Ltd A radio frequency identification ("rfid") device
DE10239303B4 (de) * 2002-08-27 2006-08-03 Siemens Ag Energieautark modulierter Backscatter-Transponder
US6914528B2 (en) * 2002-10-02 2005-07-05 Battelle Memorial Institute Wireless communication systems, radio frequency identification devices, methods of enhancing a communications range of a radio frequency identification device, and wireless communication methods
US7106173B2 (en) * 2003-01-03 2006-09-12 Battelle Memorial Institute Tags, wireless communication systems, tag communication methods, and wireless communications methods
DE10301451A1 (de) * 2003-01-10 2004-07-22 Atmel Germany Gmbh Verfahren sowie Sende- und Empfangseinrichtung zur drahtlosen Datenübertragung und Modulationseinrichtung
US6940467B2 (en) 2003-01-10 2005-09-06 Atmel Germany Gmbh Circuit arrangement and method for deriving electrical power from an electromagnetic field
DE10306689A1 (de) * 2003-02-11 2004-08-19 Atmel Germany Gmbh Schaltungsanordnung zur Signaldetektion
DE10325399A1 (de) * 2003-05-28 2004-12-30 Atmel Germany Gmbh Schaltungsanordnung zur Phasenmodulation für rückstreubasierte Transporder
DE10325396A1 (de) * 2003-05-28 2004-12-23 Atmel Germany Gmbh Schaltungsanordnung und Verfahren zur Phasenmodulation für rückstreubasierte Transponder
US7427024B1 (en) 2003-12-17 2008-09-23 Gazdzinski Mark J Chattel management apparatus and methods
DE102004013175A1 (de) * 2004-03-17 2005-10-06 Atmel Germany Gmbh Schaltungsanordnung zur Lastregelung im Empfangspfad eines Transponders
GB0410090D0 (en) * 2004-05-06 2004-06-09 Koninkl Philips Electronics Nv A radio system for sensing applications
US7548153B2 (en) 2004-07-09 2009-06-16 Tc License Ltd. Multi-protocol or multi-command RFID system
US7501947B2 (en) * 2005-05-04 2009-03-10 Tc License, Ltd. RFID tag with small aperture antenna
CN1912703A (zh) * 2005-08-12 2007-02-14 鸿富锦精密工业(深圳)有限公司 直下式背光模组及其透光板
JP2007122600A (ja) * 2005-10-31 2007-05-17 Fujitsu Ltd 集積回路チップ及びrfidシステム
KR100751064B1 (ko) * 2005-12-06 2007-08-22 한국전자통신연구원 정보복원을 위한 rfid 저전력 복조회로
US7417496B2 (en) 2005-12-06 2008-08-26 Electronics And Telecommunications Research Institute Demodulator circuit of RFID system
KR100659272B1 (ko) * 2005-12-15 2006-12-20 삼성전자주식회사 과전압 제어가 가능한 무선인증용 태그 및 그의 과전압제어 방법
KR100732681B1 (ko) * 2006-01-20 2007-06-27 삼성전자주식회사 Rfid 태그 및 이를 갖는 rfid 시스템
FR2901435B1 (fr) * 2006-05-16 2008-08-08 Ask Sa Dispositif sans contact radiofrequence comportant plusieurs antennes et circuit de selection d'antennes associe
US9489813B1 (en) * 2006-09-22 2016-11-08 Michael L. Beigel System for location in environment and identification tag
US7564356B1 (en) 2006-10-06 2009-07-21 Tc License, Ltd. Interdigit AC coupling for RFID tags
US8228175B1 (en) 2008-04-07 2012-07-24 Impinj, Inc. RFID tag chips and tags with alternative behaviors and methods
US7855643B2 (en) * 2006-11-10 2010-12-21 Round Rock Research, Llc Tracking systems, passive RFIDs, methods of locating and identifying RFIDs, and methods of tracking items
GB0623653D0 (en) * 2006-11-27 2007-01-03 Innovision Res & Tech Plc Near field RF communicators and near field RF communications enabled devices
US20080186178A1 (en) * 2007-02-07 2008-08-07 Micron Technology, Inc. RFIDS, interrogators, indication systems, methods of determining a bi-directional communication range of an interrogator, methods of activating an observable indicator, and methods of indicating bi-directional functionality of a radio connection
US8115597B1 (en) * 2007-03-07 2012-02-14 Impinj, Inc. RFID tags with synchronous power rectifier
KR20080100581A (ko) * 2007-05-14 2008-11-19 주식회사 유컴테크놀러지 무선인식(rfid) 리더 수신 장치
US20090015407A1 (en) * 2007-07-13 2009-01-15 Micron Technology, Inc. Rifid tags and methods of designing rfid tags
US7777630B2 (en) * 2007-07-26 2010-08-17 Round Rock Research, Llc Methods and systems of RFID tags using RFID circuits and antennas having unmatched frequency ranges
US8179232B2 (en) * 2008-05-05 2012-05-15 Round Rock Research, Llc RFID interrogator with adjustable signal characteristics
US7852221B2 (en) * 2008-05-08 2010-12-14 Round Rock Research, Llc RFID devices using RFID circuits and antennas having unmatched frequency ranges
US8712334B2 (en) 2008-05-20 2014-04-29 Micron Technology, Inc. RFID device using single antenna for multiple resonant frequency ranges
US8326256B1 (en) 2008-07-15 2012-12-04 Impinj, Inc. RFID tag with MOS bipolar hybrid rectifier
EP2528022A1 (en) * 2011-05-27 2012-11-28 EM Microelectronic-Marin SA Transponder with a modulator
US9396367B2 (en) 2013-02-05 2016-07-19 Amtech Systems, LLC System and method for synchronizing RFID readers utilizing RF or modulation signals
CN103679259B (zh) * 2014-01-08 2016-08-17 卓捷创芯科技(深圳)有限公司 一种具有多种时间常数的整流限幅电路和无源射频标签
CN103714378B (zh) * 2014-01-08 2016-09-07 卓捷创芯科技(深圳)有限公司 一种无源射频标签的智能化能量管理系统与能量管理方法
US10121289B1 (en) 2014-04-11 2018-11-06 Amtech Systems, LLC Vehicle-based electronic toll system with interface to vehicle display
US9937124B2 (en) 2014-09-11 2018-04-10 International Business Machines Corporation Microchip substance delivery devices having low-power electromechanical release mechanisms
US9618366B2 (en) 2014-11-25 2017-04-11 Mitutoyo Corporation Absolute encoder scale configuration with unique coded impedance modulations
US9755701B2 (en) 2015-03-31 2017-09-05 International Business Machines Corporation Hybrid tag for radio frequency identification system
US9734371B2 (en) * 2015-03-31 2017-08-15 International Business Machines Corporation Hybrid tag for radio frequency identification system
US10881788B2 (en) 2015-10-30 2021-01-05 International Business Machines Corporation Delivery device including reactive material for programmable discrete delivery of a substance
US10628723B2 (en) 2018-07-10 2020-04-21 Datamax-O'neil Corporation Methods, systems, and apparatuses for encoding a radio frequency identification (RFID) inlay
CN109120311B (zh) * 2018-07-30 2021-10-26 太原理工大学 一种基于环境反向散射的无源无线通信系统
SE542622C2 (en) * 2018-12-21 2020-06-16 Recco Invest Ab An emergency rescue equipment comprising a harmonic radar reflector
KR102146809B1 (ko) 2019-04-17 2020-08-21 에스엠에스비 주식회사 하이드로 작동유 공급장치

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4075632A (en) * 1974-08-27 1978-02-21 The United States Of America As Represented By The United States Department Of Energy Interrogation, and detection system
US4345253A (en) * 1980-06-20 1982-08-17 Identronix, Inc. Passive sensing and encoding transponder
JPS60171475A (ja) * 1984-02-15 1985-09-04 アイデンティフィケ−ション・デバイセス・インコ−ポレ−テッド 識別システム
US4786907A (en) * 1986-07-14 1988-11-22 Amtech Corporation Transponder useful in a system for identifying objects
US4724427A (en) * 1986-07-18 1988-02-09 B. I. Incorporated Transponder device
US5376943A (en) * 1990-09-07 1994-12-27 Plessey Semiconductors Limited Moving vehicle transponder
US5099226A (en) * 1991-01-18 1992-03-24 Interamerican Industrial Company Intelligent security system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI480806B (zh) * 2008-09-19 2015-04-11 Semiconductor Energy Lab 半導體裝置以及使用該半導體裝置的無線標籤
US9607975B2 (en) 2008-09-19 2017-03-28 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device and wireless tag using the same

Also Published As

Publication number Publication date
KR19980032297A (ko) 1998-07-25
JPH0974370A (ja) 1997-03-18
KR970013866A (ko) 1997-03-29
KR100221749B1 (ko) 1999-09-15
US5606323A (en) 1997-02-25
US5889489A (en) 1999-03-30
JP3940186B2 (ja) 2007-07-04

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