EP 1471597 A1 20041027 - Card with built-in antenna
Title (en)
Card with built-in antenna
Title (de)
Karte mit eingebauter Antenne
Title (fr)
Carte avec antenne intégrée
Publication
Application
Priority
JP 2003117048 A 20030422
Abstract (en)
A Varactor diode changes the resonant frequency of an inverted F-type dielectric antenna (12) in response to frequency of the signal received by the inverted F-type dielectric antenna.
IPC 1-7
IPC 8 full level
H01Q 1/22 (2006.01); H01Q 1/27 (2006.01); H01Q 1/38 (2006.01); H01Q 9/14 (2006.01); H01Q 13/08 (2006.01); H01Q 23/00 (2006.01); H04B 1/08 (2006.01); H04N 5/44 (2011.01); H04N 5/64 (2006.01)
CPC (source: EP KR)
A44B 18/0046 (2013.01 - KR); A44B 19/04 (2013.01 - KR); H01Q 1/2275 (2013.01 - EP); H01Q 1/2283 (2013.01 - EP); A45C 13/1023 (2013.01 - KR)
Citation (search report)
- [X] US 6396454 B1 20020528 - DAVIS STEVEN J [US], et al
- [X] US 6236437 B1 20010522 - SUZUKI TAKEO [JP], et al
- [X] EP 1189304 A2 20020320 - SONY CORP [JP]
- [A] EP 1154516 A1 20011114 - MITSUBISHI ELECTRIC CORP [JP]
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1471597 A1 20041027; JP 2004328129 A 20041118; KR 20040093406 A 20041105
DOCDB simple family (application)
EP 04008891 A 20040414; JP 2003117048 A 20030422; KR 20040027498 A 20040421