EP 1325535 A1 20030709 - CUTOFF TRANSMISSION AND/OR RECEPTION ANTENNA
Title (en)
CUTOFF TRANSMISSION AND/OR RECEPTION ANTENNA
Title (de)
SENDE- UND/ODER EMPFANGSANTENNE MIT UNTERBRECHUNGEN
Title (fr)
ANTENNE D'EMISSION ET/OU DE RECEPTION A COUPURES
Publication
Application
Priority
- FR 0103135 W 20011011
- FR 0012981 A 20001011
Abstract (en)
[origin: US2006050008A1] An electromagnetic wave transmission and/or reception antenna ( 10 ) which includes a flat spiral wire, the spiral having at least two turns; the antenna including at least one cut ( 12 ) for the purpose of reducing the inter-turn capacitance. Such an antenna is used in a contactless communication system in which the reader transmits electromagnetic signals to a portable object (card or ticket) in order to identify the holder of the portable object when the latter transmits return identification signals to the reader.
IPC 1-7
IPC 8 full level
H01Q 1/22 (2006.01); H01Q 1/38 (2006.01); H01Q 7/00 (2006.01); H01Q 9/04 (2006.01); H01Q 9/27 (2006.01); H04B 5/48 (2024.01)
CPC (source: EP KR US)
H01Q 1/2225 (2013.01 - EP US); H01Q 1/38 (2013.01 - EP US); H01Q 7/00 (2013.01 - EP US); H01Q 9/27 (2013.01 - EP KR US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
US 2006050008 A1 20060309; AU 9567901 A 20020422; BR 0107308 A 20020813; CA 2392769 A1 20020418; CN 1251352 C 20060412; CN 1393045 A 20030122; EP 1325535 A1 20030709; FR 2815176 A1 20020412; FR 2815176 B1 20030110; HK 1051935 A1 20030822; IL 149777 A0 20021110; JP 2004511939 A 20040415; KR 20020062318 A 20020725; MX PA02005654 A 20030210; TW 543240 B 20030721; WO 0231911 A1 20020418
DOCDB simple family (application)
US 14925103 A 20030925; AU 9567901 A 20011011; BR 0107308 A 20011011; CA 2392769 A 20011011; CN 01803078 A 20011011; EP 01976392 A 20011011; FR 0012981 A 20001011; FR 0103135 W 20011011; HK 03104123 A 20030611; IL 14977701 A 20011011; JP 2002535195 A 20011011; KR 20027007119 A 20020603; MX PA02005654 A 20011011; TW 90124627 A 20011005