GB2446536A - Multi-loop antenna for radio frequency identification applications - Google Patents

Multi-loop antenna for radio frequency identification applications Download PDF

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Publication number
GB2446536A
GB2446536A GB0809032A GB0809032A GB2446536A GB 2446536 A GB2446536 A GB 2446536A GB 0809032 A GB0809032 A GB 0809032A GB 0809032 A GB0809032 A GB 0809032A GB 2446536 A GB2446536 A GB 2446536A
Authority
GB
United Kingdom
Prior art keywords
radio frequency
radiating element
frequency identification
loop antenna
radiating
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.)
Withdrawn
Application number
GB0809032A
Other versions
GB0809032D0 (en
Inventor
Xlanming Qing
Zhining Chen
Ailian Cai
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.)
Agency for Science Technology and Research Singapore
Original Assignee
Agency for Science Technology and Research Singapore
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
Priority claimed from PCT/SG2006/000231 external-priority patent/WO2007058620A1/en
Application filed by Agency for Science Technology and Research Singapore filed Critical Agency for Science Technology and Research Singapore
Publication of GB0809032D0 publication Critical patent/GB0809032D0/en
Publication of GB2446536A publication Critical patent/GB2446536A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

An antenna for radio frequency identification is disclosed. The antenna comprises a first radiating element having at least one loop element and a second radiating element spatially displaced from the first radiating element and having at least two interconnected loop elements. The antenna further comprises a coupler for electrically coupling the first and second radiating elements. Specifically, when a first current flows in the first radiating element for generating a first magnetic field and a second current flows in the second radiating element for generating a second magnetic field, one of the first and second magnetic fields superimposes the other of the first and second magnetic fields for generating an interrogation region in the near field of the first and second radiating elements.
GB0809032A 2005-11-19 2008-05-19 Multi-loop antenna for radio frequency identification applications Withdrawn GB2446536A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SG200500396 2005-11-19
PCT/SG2006/000231 WO2007058620A1 (en) 2005-11-19 2006-08-15 Multi-loop antenna for radio frequency identification applications

Publications (2)

Publication Number Publication Date
GB0809032D0 GB0809032D0 (en) 2008-06-25
GB2446536A true GB2446536A (en) 2008-08-13

Family

ID=39596101

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0809032A Withdrawn GB2446536A (en) 2005-11-19 2008-05-19 Multi-loop antenna for radio frequency identification applications

Country Status (1)

Country Link
GB (1) GB2446536A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373163A (en) * 1980-07-14 1983-02-08 I.D. Engineering, Inc. Loop antenna for security systems
EP1229482A2 (en) * 2001-02-03 2002-08-07 SAMSUNG ELECTRONICS Co. Ltd. Antenna for card reader
US20030098814A1 (en) * 2001-11-09 2003-05-29 Keller Walter John Multiband antenna formed of superimposed compressed loops
US6590542B1 (en) * 2001-12-17 2003-07-08 James B. Briggs Double loop antenna
US20050110641A1 (en) * 2002-03-18 2005-05-26 Greg Mendolia RFID tag reading system and method
US20050162276A1 (en) * 2003-06-16 2005-07-28 Balch Brent F. Antenna system including simultaneous phase aiding and phase canceling elements

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373163A (en) * 1980-07-14 1983-02-08 I.D. Engineering, Inc. Loop antenna for security systems
EP1229482A2 (en) * 2001-02-03 2002-08-07 SAMSUNG ELECTRONICS Co. Ltd. Antenna for card reader
US20030098814A1 (en) * 2001-11-09 2003-05-29 Keller Walter John Multiband antenna formed of superimposed compressed loops
US6590542B1 (en) * 2001-12-17 2003-07-08 James B. Briggs Double loop antenna
US20050110641A1 (en) * 2002-03-18 2005-05-26 Greg Mendolia RFID tag reading system and method
US20050162276A1 (en) * 2003-06-16 2005-07-28 Balch Brent F. Antenna system including simultaneous phase aiding and phase canceling elements

Also Published As

Publication number Publication date
GB0809032D0 (en) 2008-06-25

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)