Global Patent Index - EP 1456905 A1

EP 1456905 A1 20040915 - DEVICE FOR MONITORING TRANSMISSION ANTENNAE OF ELECTROMAGNETIC DETECTION SYSTEMS

Title (en)

DEVICE FOR MONITORING TRANSMISSION ANTENNAE OF ELECTROMAGNETIC DETECTION SYSTEMS

Title (de)

EINRICHTUNG ZUR ÜBERWACHUNG DER SENDEANTENNEN VON ELEKTROMAGNETISCHEN DETEKTIONSSYSTEMEN

Title (fr)

DISPOSITIF POUR LE PILOTAGE DES ANTENNES D'EMISSION DES SYSTEMES DE DETECTION ELECTROMAGNETIQUES

Publication

EP 1456905 A1 20040915 (FR)

Application

EP 02805395 A 20021217

Priority

  • FR 0204400 W 20021217
  • FR 0116766 A 20011221

Abstract (en)

[origin: WO03055005A1] The invention concerns electromagnetic detection systems designed to detect stolen objects, and comprising at least a transmission antenna and at least a reception antenna, the or each transmission antenna being powered by a power amplifier. The device consists of: at least a transmission antenna (4) proper, not frequency-tuned, at least an on/off simplified power amplifier (6) of H-bridge or half-bridge or quarter-bridge type, the transmission antenna element (4) being directly coupled to said amplifier (6), and at least an electronic powering circuit, whereof the output is connected to the amplifier.

IPC 1-7

H01Q 7/04; H01Q 7/00

IPC 8 full level

G08B 13/24 (2006.01); H01Q 1/24 (2006.01); H01Q 7/00 (2006.01); H01Q 7/04 (2006.01)

CPC (source: EP)

H01Q 7/00 (2013.01); H01Q 7/04 (2013.01)

Citation (search report)

See references of WO 03055005A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR

DOCDB simple family (publication)

WO 03055005 A1 20030703; AT 300792 T 20050815; AU 2002364661 A1 20030709; CA 2470160 A1 20030703; CN 100452101 C 20090114; CN 1606816 A 20050413; DE 60205277 D1 20050901; DE 60205277 T2 20060608; EP 1456905 A1 20040915; EP 1456905 B1 20050727; ES 2247426 T3 20060301; FR 2834132 A1 20030627; FR 2834132 B1 20050318; HU 0402353 A2 20050228; HU 226181 B1 20080630; IL 162453 A 20091118; IL 162453 D0 20051120; JP 2005528673 A 20050922; JP 4095964 B2 20080604; MX PA04005842 A 20040910; PL 371772 A1 20050627; RU 2004122390 A 20060120; RU 2308130 C2 20071010; US 2005095983 A1 20050505; US 2008119146 A1 20080522; ZA 200404712 B 20050524

DOCDB simple family (application)

FR 0204400 W 20021217; AT 02805395 T 20021217; AU 2002364661 A 20021217; CA 2470160 A 20021217; CN 02825651 A 20021217; DE 60205277 T 20021217; EP 02805395 A 20021217; ES 02805395 T 20021217; FR 0116766 A 20011221; HU 0402353 A 20021217; IL 16245302 A 20021217; IL 16245304 A 20040610; JP 2003555619 A 20021217; MX PA04005842 A 20021217; PL 37177202 A 20021217; RU 2004122390 A 20021217; US 49926704 A 20041217; US 93637107 A 20071107; ZA 200404712 A 20040614