EP 2118965 B1 20110504 - SELF-RESONANT ELECTRICALLY SMALL ANTENNA
Title (en)
SELF-RESONANT ELECTRICALLY SMALL ANTENNA
Title (de)
EIGENRESONANTE ELEKTRISCHE KLEINE ANTENNE
Title (fr)
PETITE ANTENNE ÉLECTRIQUEMENT AUTO-RÉSONANTE
Publication
Application
Priority
EP 2007000262 W 20070112
Abstract (en)
[origin: WO2008083719A1] The invention falls within the technology of antenna design, in general and particularly, in the technical field of Radiofrequency Identification (RFID). In short, an antenna is described comprising a radiating element that achieves self-resonance without needing any external matching network and can be reduced in size arbitrarily. The radiating element is based on a split ring resonator structure whose overall size can be reduced as much as needed, independently from the resonant frequency required, just by increasing the overall inductance and capacitance between the rings (R1, R2) of the structure excited at a feed point (1). The feeding method can vary to increase the radiation resistance of the antenna or for compensating the capacitive behaviour of an RFID chip. This small antenna is especially suitable for RFID applications because it can be fabricated in a planar substrate, with reduced dimensions typical for conventional antennas used as RFID tags.
IPC 8 full level
H01Q 7/00 (2006.01); H01Q 1/22 (2006.01); H01Q 13/16 (2006.01)
CPC (source: EP)
H01Q 1/2208 (2013.01); H01Q 1/2225 (2013.01); H01Q 7/00 (2013.01); H01Q 13/16 (2013.01); H01Q 15/0086 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008083719 A1 20080717; AT E508493 T1 20110515; DE 602007014410 D1 20110616; EP 2118965 A1 20091118; EP 2118965 B1 20110504; ES 2366137 T3 20111017
DOCDB simple family (application)
EP 2007000262 W 20070112; AT 07702735 T 20070112; DE 602007014410 T 20070112; EP 07702735 A 20070112; ES 07702735 T 20070112