| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device and a communication device that can secure a wide communication rage with a small scale configuration.SOLUTION: An antenna 31 includes a feeding antenna 41 and a parasitic antenna 43. Current from an unshown power supply flows through the feeding antenna 41 and a first magnetic field is formed corresponding to the current. The parasitic antenna 43 forms a combined magnetic field by combining a second magnetic field generated by induction current generated by magnetic field coupling with the feeding antenna 41 and the first magnetic field from the feeding antenna 41, and thereby covers a range where magnetic field strength exceeds prescribed magnetic field strength wider than an area when only the first magnetic field is formed.SELECTED DRAWING: Figure 4 |
