| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device having a structure that can achieve further improvement of communication characteristics.SOLUTION: An opening part 40 separated off from a closed loop edge 30 formed by an edge including an outer edge 26 of a conductor plate 20 is provided on the conductor plate 20. The opening part 40 is made such that an edge itself of the opening part 40 can form a closed loop. Further, a magnetic substance 60 is arranged such that it extends from the outside of the closed loop edge 30 to the inside of the opening part 40. A coil 80 is placed on a magnetic path where the magnetic substance 60 forms a part. This allows communication distance to be extended.SELECTED DRAWING: Figure 2 |
