| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device capable of dealing with an ultra-wide band while achieving miniaturization.SOLUTION: An antenna device 10 comprises: a power feeding element 11 that includes a first portion 111, and a second portion 112 having a width larger than that of the first portion 111; and a passive element 12 that includes a plurality of folded parts (a first straight line part 121, a second straight line part 122, a third straight line part 123, a first coupling part 124 and a second coupling part 125) folded at two positions. In addition, a width W2 of the second portion 112 of the power feeding element 11 is set to be larger than a width W3 of the plurality of folded parts of the passive element 12. At least the second portion 112 of the power feeding element 11 is configured to be coupled with the plurality of folded parts of the passive element 12.SELECTED DRAWING: Figure 2 |
