| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device which can flexibly adjust each of doubly resonated resonance frequencies and can be miniaturized and thinned.SOLUTION: The antenna device comprises a substrate body 2, and a ground face GND, a first element 3, a second element 4 and a third element 5 which are formed on the substrate body. The first element has a first extension part E1 which extends in a direction apart from the ground face, and a second extension part E2 which extends from a tip of the first extension part along the ground face. The second element has a third extension part E3 which extends from the base end of the first element in a direction apart from the first extension part, and a fourth extension part E4 which extends from a tip of the third extension part along the first extension part in a direction apart from the ground face. The second extension part has a narrow part E2a in which the line width is narrower than other parts of the second extension part, and a capacity loaded pattern part E2b which is connected to a tip of the narrow part, is wider than the narrow part, and extends for a long distance in an extension direction of the second extension part, in the middle of the second extension part. |
