IL142387A - An antenna with a double loop - Google Patents

An antenna with a double loop

Info

Publication number
IL142387A
IL142387A IL14238798A IL14238798A IL142387A IL 142387 A IL142387 A IL 142387A IL 14238798 A IL14238798 A IL 14238798A IL 14238798 A IL14238798 A IL 14238798A IL 142387 A IL142387 A IL 142387A
Authority
IL
Israel
Prior art keywords
antenna
loop elements
loop
transmit
receive
Prior art date
Application number
IL14238798A
Other languages
English (en)
Hebrew (he)
Other versions
IL142387A0 (en
Original Assignee
Checkpoint Systems 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 Checkpoint Systems Inc filed Critical Checkpoint Systems Inc
Priority claimed from PCT/US1998/024182 external-priority patent/WO2000030214A1/fr
Publication of IL142387A0 publication Critical patent/IL142387A0/xx
Publication of IL142387A publication Critical patent/IL142387A/en

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Burglar Alarm Systems (AREA)
  • Near-Field Transmission Systems (AREA)
  • Aerials With Secondary Devices (AREA)
  • Support Of Aerials (AREA)
IL14238798A 1998-11-12 1998-11-12 An antenna with a double loop IL142387A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1998/024182 WO2000030214A1 (fr) 1997-05-28 1998-11-12 Antenne a boucles multiples

Publications (2)

Publication Number Publication Date
IL142387A0 IL142387A0 (en) 2002-03-10
IL142387A true IL142387A (en) 2004-06-20

Family

ID=22268290

Family Applications (1)

Application Number Title Priority Date Filing Date
IL14238798A IL142387A (en) 1998-11-12 1998-11-12 An antenna with a double loop

Country Status (6)

Country Link
EP (1) EP1138098A4 (fr)
JP (1) JP2002530910A (fr)
KR (1) KR100605341B1 (fr)
CN (1) CN1123089C (fr)
CA (1) CA2350217C (fr)
IL (1) IL142387A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1598965A4 (fr) * 2003-02-27 2008-12-31 Kiyoaki Takicuchi Systeme de communication
JP4772744B2 (ja) * 2007-05-17 2011-09-14 昭和飛行機工業株式会社 非接触給電装置用の信号伝送コイル通信装置
KR101563428B1 (ko) * 2014-05-27 2015-10-26 재단법인대구경북과학기술원 근거리 자기장 시스템
WO2016136322A1 (fr) * 2015-02-24 2016-09-01 株式会社村田製作所 Appareil d'antenne et système rfid

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3577136A (en) * 1967-08-04 1971-05-04 Security Systems Inc Short-range signaling system
US4135184A (en) * 1977-08-31 1979-01-16 Knogo Corporation Electronic theft detection system for monitoring wide passageways

Also Published As

Publication number Publication date
CN1123089C (zh) 2003-10-01
EP1138098A4 (fr) 2005-01-26
IL142387A0 (en) 2002-03-10
EP1138098A1 (fr) 2001-10-04
KR20010106513A (ko) 2001-11-29
KR100605341B1 (ko) 2006-07-28
JP2002530910A (ja) 2002-09-17
CA2350217C (fr) 2006-04-04
CN1322391A (zh) 2001-11-14
CA2350217A1 (fr) 2000-05-25

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Legal Events

Date Code Title Description
FF Patent granted
MM9K Patent not in force due to non-payment of renewal fees