TWI322531B - Multi-loop antenna for radio-frequency identification - Google Patents

Multi-loop antenna for radio-frequency identification Download PDF

Info

Publication number
TWI322531B
TWI322531B TW092130831A TW92130831A TWI322531B TW I322531 B TWI322531 B TW I322531B TW 092130831 A TW092130831 A TW 092130831A TW 92130831 A TW92130831 A TW 92130831A TW I322531 B TWI322531 B TW I322531B
Authority
TW
Taiwan
Prior art keywords
antenna
loop
interrogation
loops
power supply
Prior art date
Application number
TW092130831A
Other languages
English (en)
Chinese (zh)
Other versions
TW200414610A (en
Inventor
Ann Waldner Michele
Original Assignee
3M Innovative Properties Co
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 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Publication of TW200414610A publication Critical patent/TW200414610A/zh
Application granted granted Critical
Publication of TWI322531B publication Critical patent/TWI322531B/zh

Links

Classifications

    • 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods 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
    • G06K7/10316—Methods 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 using at least one antenna particularly designed for interrogating the wireless record carriers
    • G06K7/10336—Methods 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 using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the near field type, inductive coil
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • 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
    • G08B13/2474—Antenna or antenna activator geometry, arrangement or layout
    • 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
    • H01Q1/2216—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 interrogator/reader equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Electromagnetism (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Automation & Control Theory (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Near-Field Transmission Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Burglar Alarm Systems (AREA)
  • Alarm Systems (AREA)
  • Details Of Aerials (AREA)
TW092130831A 2002-11-25 2003-11-04 Multi-loop antenna for radio-frequency identification TWI322531B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42928202P 2002-11-25 2002-11-25
US10/378,458 US6861993B2 (en) 2002-11-25 2003-03-03 Multi-loop antenna for radio-frequency identification

Publications (2)

Publication Number Publication Date
TW200414610A TW200414610A (en) 2004-08-01
TWI322531B true TWI322531B (en) 2010-03-21

Family

ID=32328888

Family Applications (1)

Application Number Title Priority Date Filing Date
TW092130831A TWI322531B (en) 2002-11-25 2003-11-04 Multi-loop antenna for radio-frequency identification

Country Status (11)

Country Link
US (1) US6861993B2 (enExample)
EP (1) EP1579400A2 (enExample)
JP (1) JP4299304B2 (enExample)
KR (1) KR20050086792A (enExample)
AR (1) AR042113A1 (enExample)
AU (2) AU2003279833A1 (enExample)
BR (1) BR0316610A (enExample)
CA (1) CA2507046A1 (enExample)
MX (1) MXPA05005605A (enExample)
TW (1) TWI322531B (enExample)
WO (1) WO2004049278A2 (enExample)

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Also Published As

Publication number Publication date
AU2003279833A1 (en) 2004-06-18
TW200414610A (en) 2004-08-01
AR042113A1 (es) 2005-06-08
JP4299304B2 (ja) 2009-07-22
MXPA05005605A (es) 2005-08-16
US20040100413A1 (en) 2004-05-27
EP1579400A2 (en) 2005-09-28
KR20050086792A (ko) 2005-08-30
WO2004049278A3 (en) 2004-08-26
AU2009251151A1 (en) 2010-01-21
CA2507046A1 (en) 2004-06-10
WO2004049278A2 (en) 2004-06-10
BR0316610A (pt) 2005-10-11
US6861993B2 (en) 2005-03-01
JP2006511181A (ja) 2006-03-30

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