EP 0394714 A3 19910703 - IDENTIFICATION DEVICE WITH INDUCTIVE ANTENNA COUPLING
Title (en)
IDENTIFICATION DEVICE WITH INDUCTIVE ANTENNA COUPLING
Publication
Application
Priority
DE 3912034 A 19890412
Abstract (en)
[origin: EP0394714A2] The invention relates to an identification device (10) consisting of a transmitter and receiver section (12) and an antenna connected thereto via an antenna coupling (16). Known identification devices are awkward to handle and trouble-prone in particular under rough use conditions. The new identification device is to be suitable in particular for mobile use and remain functionable even under rough ambient conditions. For this purpose in the antenna coupling (16) a dividable transformer (18) is arranged, a first transformer half having a core (20) and a winding (21) being accommodated in the transmitter and receiver section (12) and a second transformer half having a core (22) and a winding (23) being accommodated in the antenna (14). The two windings (21, 23) are inductively coupled in the connected state of the transmitter and receiver section (12) and the antenna (14).
IPC 1-7
IPC 8 full level
CPC (source: EP)
H01Q 1/24 (2013.01); H01Q 1/273 (2013.01)
Citation (search report)
- [Y] DE 8532245 U1 19860227
- [A] FR 2274147 A1 19760102 - BRITISH STEEL CORP [GB]
- [A] FR 2297525 A1 19760806 - PELCON LTD [CA]
- [A] US 4621243 A 19861104 - HARADA TAKUJI [JP]
- [Y] PATENT ABSTRACTS OF JAPAN vol. 10, no. 384 (E-466)(2441) 23 December 1986, & JP-A-61 174607 (TETSUO ISHI) 06 August 1986,
Designated contracting state (EPC)
AT BE CH DE DK FR GB IT LI NL
DOCDB simple family (publication)
EP 0394714 A2 19901031; EP 0394714 A3 19910703; EP 0394714 B1 19970709; AT E155288 T1 19970715; DE 3912034 C1 19901025; DE 69031008 D1 19970814; DE 69031008 T2 19980108
DOCDB simple family (application)
EP 90106406 A 19900404; AT 90106406 T 19900404; DE 3912034 A 19890412; DE 69031008 T 19900404