| CPC H01Q 1/48 (2013.01) [H01Q 9/0407 (2013.01); H01Q 9/0428 (2013.01)] | 8 Claims |
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1. An antenna device comprising:
a ground portion including a linear portion connecting a first point and a second point to each other along a predetermined first direction parallel to a surface of a substrate, the ground portion being formed by grounding a conductor portion of the substrate on one side in a second direction orthogonal to the first direction and parallel to the surface of the substrate;
a power feeding portion provided in a first range including the first point among the first range, wherein the first range, a second range, and a third range that are obtained by dividing the linear portion of the ground portion into three equal parts along the first direction; and
an element portion configured to receive power from the power feeding portion and formed in a conductor portion of the substrate that is insulated from the ground portion in a state in which the element portion protrudes from the first range toward an other side in the second direction with respect to the linear portion,
wherein the element portion includes a first element portion protruding from the linear portion in the first range toward the other side in the second direction, and a second element portion extending along the first direction from the first element portion toward the second point, spaced apart from the linear portion toward the other side in the second direction, and having at least one linear side, and
wherein the first element portion is formed in a rectangular shape and the second element portion is formed in a right-angled triangular shape, and a right-angled corner portion of the second element portion coincides with a corner portion of the rectangular first element portion on outer edge portion sides of the substrate.
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