| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device capable of flexibly adjusting each of double-resonated resonance frequencies.SOLUTION: An antenna device includes: a substrate body 2; and a ground surface G0, a first element 3, a second element 4 and a third element 5 which are formed on a surface of the substrate body. The first element includes a first extension part E1, a second extension part E2, a third extension part E3, and a fourth extension part E4. The second element 4 includes a fifth extension part E5 and a sixth extension part E6. The third element includes: a seventh extension part E7 having a base end connected to the middle of the fourth extension part and extending toward a base end side of the third extension part along the third extension part; an eighth extension part E8 extending toward a tip side of the fourth extension part along the fourth extension part from the tip of the seventh extension part; and a ninth extension part E9 extending toward the fourth extension part from the tip of the eighth extension part. |
