Antenna device and IC card having the same
AssigneeTDK Corporation
InventorsShoma Kajikiya, Toshio Tomonari
Life of this patent
Estimating the term…
Loading patent…
AssigneeTDK Corporation
InventorsShoma Kajikiya, Toshio Tomonari
Estimating the term…
Disclosed herein is an antenna device that includes a metal plate having a through hole, a first coil wound along the through hole and having an opening that overlaps the through hole, and a second coil wound along an outer edge of the metal plate and connected to the first coil. The edge of the through hole includes a first edge positioned on one side in a first direction as viewed from a center of the first through hole and a second edge positioned on another side in the first direction as viewed from the center of the first through hole. The first edge has a first protruding part protruding toward the second edge and overlapping a winding area of the first coil. The second edge has a second protruding part protruding toward the first edge and overlapping the winding area of the first coil.
An antenna device comprising:
An IC card comprising:
Dependencies are inferred from the claim text.