Antenna frame for an IC card

摘要

There is provided an antenna frame (40) for an IC card (10), wherein a plane coil (14) formed by punching or etching a thin metallic sheet in which a conductor line (12) is substantially wound a plurality of times on the same plane is supported by an outside frame (44) formed in such a manner that a predetermined interval (42) is left between the outermost conductor (12a) of the plane coil (14) and the outside frame (44). The outermost conductor (12a) of the plane coil (14) is connected with a support portion (46) extending from an inside edge of the outside frame (44), and the conductors (12) on the circumferences adjacent to each other in the inward and outward direction of the plane coil (14) are connected with each other by connecting pieces (54).