CA2300425A1 - Drive circuit for reactive loads - Google Patents

Drive circuit for reactive loads Download PDF

Info

Publication number
CA2300425A1
CA2300425A1 CA002300425A CA2300425A CA2300425A1 CA 2300425 A1 CA2300425 A1 CA 2300425A1 CA 002300425 A CA002300425 A CA 002300425A CA 2300425 A CA2300425 A CA 2300425A CA 2300425 A1 CA2300425 A1 CA 2300425A1
Authority
CA
Canada
Prior art keywords
drive circuit
reactive loads
driver circuit
antenna
matching reactance
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.)
Granted
Application number
CA002300425A
Other languages
French (fr)
Other versions
CA2300425C (en
Inventor
John H. Bowers
Alan Dutcher
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.)
Checkpoint Systems Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2300425A1 publication Critical patent/CA2300425A1/en
Application granted granted Critical
Publication of CA2300425C publication Critical patent/CA2300425C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2477—Antenna or antenna activator circuit
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2471—Antenna signal processing by receiver or emitter

Abstract

A highly efficient resonant switching driver circuit (10) includes a matching reactance (16) coupled between a resonant antenna (12) and a driver circuit (14). The matching reactance performs a series to parallel impedance match from the driver circuit to the antenna.
CA002300425A 1997-08-15 1998-07-15 Drive circuit for reactive loads Expired - Fee Related CA2300425C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/911,843 1997-08-15
US08/911,843 US5926093A (en) 1997-08-15 1997-08-15 Drive circuit for reactive loads
PCT/US1998/014576 WO1999009536A1 (en) 1997-08-15 1998-07-15 Drive circuit for reactive loads

Publications (2)

Publication Number Publication Date
CA2300425A1 true CA2300425A1 (en) 1999-02-25
CA2300425C CA2300425C (en) 2005-01-25

Family

ID=25430951

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002300425A Expired - Fee Related CA2300425C (en) 1997-08-15 1998-07-15 Drive circuit for reactive loads

Country Status (13)

Country Link
US (1) US5926093A (en)
EP (1) EP1012803B1 (en)
JP (1) JP3953734B2 (en)
KR (1) KR100628895B1 (en)
CN (1) CN1152351C (en)
AR (1) AR014898A1 (en)
AT (1) ATE345555T1 (en)
AU (1) AU737918B2 (en)
CA (1) CA2300425C (en)
DE (1) DE69836431T2 (en)
ES (1) ES2276469T3 (en)
TW (1) TW393858B (en)
WO (1) WO1999009536A1 (en)

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US6446049B1 (en) 1996-10-25 2002-09-03 Pole/Zero Corporation Method and apparatus for transmitting a digital information signal and vending system incorporating same
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
US20090230189A1 (en) * 2000-11-16 2009-09-17 Shelton Louie Scanning Wand For Pharmacy Tracking and Verification
US8224664B1 (en) 2000-11-16 2012-07-17 Gsl Solutions, Inc. Portable prescription order distribution cart and tracking system
US7887146B1 (en) 2001-08-18 2011-02-15 Gsl Solutions, Inc. Suspended storage system for pharmacy
US8479988B2 (en) * 2000-11-16 2013-07-09 Gsl Solutions, Inc. System for pharmacy tracking and customer id verification
US7672859B1 (en) * 2000-11-16 2010-03-02 Gsl Solutions, Inc. Prescription order position tracking system and method
US7747477B1 (en) * 2000-11-16 2010-06-29 Gsl Solutions, Inc. Pharmacy supply tracking and storage system
US6737973B2 (en) * 2001-10-15 2004-05-18 3M Innovative Properties Company Amplifier modulation
US6570777B1 (en) * 2001-12-06 2003-05-27 Eni Technology, Inc. Half sine wave resonant drive circuit
US7321621B2 (en) * 2003-06-19 2008-01-22 Applied Micro Circuits Corporation Differential receiver circuit with electronic dispersion compensation for optical communications systems
US7372364B2 (en) 2003-11-10 2008-05-13 3M Innovative Properties Company Algorithm for RFID security
US7119692B2 (en) * 2003-11-10 2006-10-10 3M Innovative Properties Company System for detecting radio-frequency identification tags
US20050179056A1 (en) * 2004-02-18 2005-08-18 Teggatz Ross E. System for resonant circuit tuning
US7417599B2 (en) * 2004-02-20 2008-08-26 3M Innovative Properties Company Multi-loop antenna for radio frequency identification (RFID) communication
US7138919B2 (en) * 2004-02-23 2006-11-21 Checkpoint Systems, Inc. Identification marking and method for applying the identification marking to an item
US8099335B2 (en) * 2004-02-23 2012-01-17 Checkpoint Systems, Inc. Method and system for determining billing information in a tag fabrication process
US7704346B2 (en) 2004-02-23 2010-04-27 Checkpoint Systems, Inc. Method of fabricating a security tag in an integrated surface processing system
US7116227B2 (en) * 2004-02-23 2006-10-03 Checkpoint Systems, Inc. Tag having patterned circuit elements and a process for making same
US7384496B2 (en) * 2004-02-23 2008-06-10 Checkpoint Systems, Inc. Security tag system for fabricating a tag including an integrated surface processing system
US7119685B2 (en) * 2004-02-23 2006-10-10 Checkpoint Systems, Inc. Method for aligning capacitor plates in a security tag and a capacitor formed thereby
GB0404121D0 (en) * 2004-02-25 2004-03-31 Univ Belfast Class E power amplifier circuit and associated transmitter circuits
WO2006065157A1 (en) * 2004-12-17 2006-06-22 Edit Id Limited Range optimised identification system
KR100721057B1 (en) * 2005-11-03 2007-05-22 한국전자통신연구원 Voltage multiplier for radio frequency identification tag
KR101314145B1 (en) * 2010-09-02 2013-10-04 삼성전자주식회사 Power Converter in Resonance Power Transmission System, and Resonance Power Transmission Apparatus
US11244747B2 (en) 2014-10-16 2022-02-08 Gsl Solutions, Inc. Pharmacy security system
US20150179053A1 (en) * 2013-12-20 2015-06-25 General Electric Company System and method to detect a presence of an object relative to a support
ITUA20161824A1 (en) * 2016-03-18 2017-09-18 Eggtronic S R L CIRCUIT AND METHOD TO DRIVE ELECTRIC LOADS
US9755679B1 (en) * 2016-07-08 2017-09-05 Nxp B.V. Load dependent receiver configuration
TWI671907B (en) * 2017-01-03 2019-09-11 美商高效電源轉換公司 Low distortion rf switch
US11285509B2 (en) * 2018-01-16 2022-03-29 Kansai Paint Co., Ltd. Method for forming multilayer coating film
CN110687336A (en) * 2019-10-31 2020-01-14 中电科仪器仪表有限公司 Broadband analog signal isolation circuit and method based on electric field coupling and oscilloscope
JP7234177B2 (en) * 2020-03-17 2023-03-07 株式会社東芝 semiconductor equipment

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752960A (en) * 1971-12-27 1973-08-14 C Walton Electronic identification & recognition system
US3796958A (en) * 1972-07-14 1974-03-12 Westinghouse Electric Corp Transmitter circuit
US3816708A (en) * 1973-05-25 1974-06-11 Proximity Devices Electronic recognition and identification system
US4223830A (en) * 1978-08-18 1980-09-23 Walton Charles A Identification system
US4580041A (en) * 1983-12-09 1986-04-01 Walton Charles A Electronic proximity identification system with simplified low power identifier
US4857893A (en) * 1986-07-18 1989-08-15 Bi Inc. Single chip transponder device
US4963880A (en) * 1988-05-03 1990-10-16 Identitech Coplanar single-coil dual function transmit and receive antenna for proximate surveillance system
NL8803170A (en) * 1988-12-27 1990-07-16 Nedap Nv IDENTIFICATION SYSTEM.
US5025273A (en) * 1990-04-30 1991-06-18 Armstrong World Industries Inc. RF drive circuit for an ion projection printing head
US5300922A (en) * 1990-05-29 1994-04-05 Sensormatic Electronics Corporation Swept frequency electronic article surveillance system having enhanced facility for tag signal detection
US5099226A (en) * 1991-01-18 1992-03-24 Interamerican Industrial Company Intelligent security system
EP0523271B1 (en) * 1991-07-18 1997-03-12 Texas Instruments Deutschland Gmbh Circuit arrangement for antenna coupling
EP0590716B1 (en) * 1992-10-02 1998-01-07 Koninklijke Philips Electronics N.V. Drive circuit for a flyback converter with switching transistors in bridge arrangement
DE69422682T2 (en) * 1993-10-26 2000-08-10 Texas Instruments Deutschland Antenna circuit

Also Published As

Publication number Publication date
AR014898A1 (en) 2001-04-11
DE69836431T2 (en) 2007-09-27
EP1012803A4 (en) 2005-02-02
DE69836431D1 (en) 2006-12-28
CN1152351C (en) 2004-06-02
KR100628895B1 (en) 2006-09-27
EP1012803B1 (en) 2006-11-15
JP2002509296A (en) 2002-03-26
EP1012803A1 (en) 2000-06-28
TW393858B (en) 2000-06-11
CN1302422A (en) 2001-07-04
AU8570398A (en) 1999-03-08
KR20010022881A (en) 2001-03-26
CA2300425C (en) 2005-01-25
WO1999009536A1 (en) 1999-02-25
US5926093A (en) 1999-07-20
AU737918B2 (en) 2001-09-06
ES2276469T3 (en) 2007-06-16
JP3953734B2 (en) 2007-08-08
ATE345555T1 (en) 2006-12-15

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20140715