18891079. ANTENNA DEVICE AND IC CARD HAVING THE SAME (TDK CORPORATION)
ANTENNA DEVICE AND IC CARD HAVING THE SAME
Organization Name
Inventor(s)
Chris T. Burket of Lincolnshire IL US
ANTENNA DEVICE AND IC CARD HAVING THE SAME
This abstract first appeared for US patent application 18891079 titled 'ANTENNA DEVICE AND IC CARD HAVING THE SAME
Original Abstract Submitted
Disclosed herein is an antenna device that includes: a metal plate having a first slit extending in a long side direction thereof and a second slit extending in a short side direction thereof; a first coil disposed so as to overlap with the metal plate in a plan view and circling along an outer edge of the metal plate; and a second coil electrically connected to the first coil, disposed so as to be surrounded by the first coil, and disposed so as to overlap with the first slit. The first slit has a first end that is open to divide the outer edge and a second end terminating without reaching the outer edge. The second slit has a third end that is open to divide the outer edge and a fourth end terminating without reaching the outer edge.