AU6937900A - Method and apparatus for reducing the amount of interference between two antennae positioned near each other in an electric field radio frequency identificationreader system - Google Patents

Method and apparatus for reducing the amount of interference between two antennae positioned near each other in an electric field radio frequency identificationreader system

Info

Publication number
AU6937900A
AU6937900A AU69379/00A AU6937900A AU6937900A AU 6937900 A AU6937900 A AU 6937900A AU 69379/00 A AU69379/00 A AU 69379/00A AU 6937900 A AU6937900 A AU 6937900A AU 6937900 A AU6937900 A AU 6937900A
Authority
AU
Australia
Prior art keywords
identificationreader
interference
reducing
electric field
radio frequency
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
AU69379/00A
Inventor
Sebastian T. Kakkanad
James G. Quaderer
John H. Rolin
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of AU6937900A publication Critical patent/AU6937900A/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
    • 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
    • G06K7/10346—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 far field type, e.g. HF types or dipoles
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H01Q1/525—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between emitting and receiving antennas

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Details Of Aerials (AREA)
AU69379/00A 1999-10-27 2000-08-25 Method and apparatus for reducing the amount of interference between two antennae positioned near each other in an electric field radio frequency identificationreader system Abandoned AU6937900A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US42863899A 1999-10-27 1999-10-27
US09428638 1999-10-27
PCT/US2000/023396 WO2001031741A1 (en) 1999-10-27 2000-08-25 Method and apparatus for reducing the amount of interference between two antennae positioned near each other in an electric field radio frequency identification reader system

Publications (1)

Publication Number Publication Date
AU6937900A true AU6937900A (en) 2001-05-08

Family

ID=23699750

Family Applications (1)

Application Number Title Priority Date Filing Date
AU69379/00A Abandoned AU6937900A (en) 1999-10-27 2000-08-25 Method and apparatus for reducing the amount of interference between two antennae positioned near each other in an electric field radio frequency identificationreader system

Country Status (2)

Country Link
AU (1) AU6937900A (en)
WO (1) WO2001031741A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2831811B1 (en) * 2001-11-08 2004-07-23 Oreal USE OF PARTICULAR AMINO SILICONES AS A POST TREATMENT OF DIRECT DYES OR OF OXIDATION OF KERATIN FIBERS
DE102007019672B4 (en) * 2006-12-27 2017-07-27 Ifm Electronic Gmbh Transmitting and receiving device for a radio detection system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3594809A (en) * 1968-10-29 1971-07-20 Warwick Electronics Inc Crossed loop antennas with separating shield
US4968984A (en) * 1987-06-29 1990-11-06 Nissan Motor Company, Limited Antenna unit for a vehicle
US4827275A (en) * 1987-07-16 1989-05-02 Fusinski Richard E Noise rejection antenna system for nonmetallic marine vessels
US5826201A (en) * 1992-11-25 1998-10-20 Asterion, Inc. Antenna microwave shield for cellular telephone
US5444866A (en) * 1993-02-24 1995-08-22 Cykiert; Robert C. Device for shielding a cellular telephone user from electromagnetic waves
EP0782214B1 (en) * 1995-12-22 2004-10-06 Texas Instruments France Ring antennas for resonant cicuits

Also Published As

Publication number Publication date
WO2001031741A1 (en) 2001-05-03

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase