| 摘要 |
According to one embodiment, a coupler apparatus includes a coupling element, a ground plane, a first short element, and a second short element which short-circuits the second end of the coupling element and the ground plane. The coupling element includes a first conductive portion having first and second ends, and a second conductive portion which extends from a position between the first end and the second end and has an open end. The ground plane faces the coupling element and formed of a conductive material. The first short element short-circuits the first end of the coupling element and the ground plane The second short element short-circuits the second end of the coupling element and the ground plane.
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