EP 2527225 A1 20121128 - Magnetic induction antenna arrangement

Title (en)

Magnetic induction antenna arrangement

Title (de)

Magnetische Induktionsantennenanordnung

Title (fr)

Agencement d'antenne à induction magnétique

Publication

EP 2527225 A1 20121128 (EN)

Application

EP 11167547 A 20110525

Priority

EP 11167547 A 20110525

Abstract (en)

The invention relates to a magnetic induction antenna arrangement comprising an electrically conducting loop (1) forming a first antenna (2) for powering tags over the entire range from high to low distances between the first antenna (2) and the tag by producing a first electromagnetic field. The conducting loop (1) or a second conducting loop forms at least one second antenna (3), which is arranged in such a manner that a second electromagnetic field produced by the second antenna (3) partially cancels the first electromagnetic field produced by the first antenna (2).

IPC 8 full level

B61L 3/12 (2006.01); H01Q 1/22 (2006.01); H01Q 1/32 (2006.01); H01Q 1/36 (2006.01); H01Q 7/00 (2006.01)

CPC (source: EP)

B61L 3/121 (2013.01); B61L 3/126 (2013.01); H01Q 1/2216 (2013.01); H01Q 1/3225 (2013.01); H01Q 1/36 (2013.01); H01Q 7/00 (2013.01)

Citation (applicant)

US 2007100517 A1 20070503 - KIM BONG-TAEK [KR]

Citation (search report)

[XY] FR 2873341 A1 20060127 - SIEMENS TRANSP SYSTEMS SOC PAR [FR]
[Y] US 5914692 A 19990622 - BOWERS JOHN H [US], et al
[Y] WO 2009059997 A1 20090514 - COMMISSARIAT ENERGIE ATOMIQUE [FR], et al
[Y] US 2003197653 A1 20031023 - BARBER RUSSELL [US], et al
[YA] EP 1860597 A1 20071128 - SCHWEIZERISCHE BUNDESBAHNEN SB [CH]
[YA] EP 1701287 A1 20060913 - SCHWEIZERISCHE BUNDESBAHNEN SB [CH]
[A] EP 1227024 A1 20020731 - ALSTOM [FR]

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2527225 A1 20121128; EP 2527225 B1 20160427; CN 102800925 A 20121128; CN 102800925 B 20160120; ES 2578508 T3 20160727

DOCDB simple family (application)

EP 11167547 A 20110525; CN 201110181564 A 20110623; ES 11167547 T 20110525