An antenna device comprising: a radiator configured to be provided with a power feeding signal; a plurality of tuning units disposed adjacent to the radiator and being spaced apart from each other; at least one short circuit portion configured to short circuit a tuning unit to one of the adjacent tuning units or to the radiator, wherein one or some of the plurality of tuning units is/are configured to be short circuited to one of the adjacent tuning units or to the radiator, and the rest of the plurality of tuning units is/are configured to be not short circuited to any of the adjacent tuning units or to the radiator; a ground (GND), wherein the plurality of tuning units are arranged in a region between the radiator and the ground; a circuit board formed of a plurality of layers comprising at least a first layer and a second layer; a plurality of first via holes formed in each of the layers, characterized in that the radiator further comprises: a plurality of first via pads provided between the first layer and the second layer adjacent to the first layer, wherein each of the first via pads interconnects a first via hole formed in the first layer and a first via hole formed in the second layer, wherein the first via holes are arranged in one of the layers in a horizontal direction, and respective first via holes formed in one of the layers are aligned with the first via holes formed in another one of the layers such that the radiator is formed in a grid type. a radiator configured to be provided with a power feeding signal; a plurality of tuning units disposed adjacent to the radiator and being spaced apart from each other; at least one short circuit portion configured to short circuit a tuning unit to one of the adjacent tuning units or to the radiator, wherein one or some of the plurality of tuning units is/are configured to be short circuited to one of the adjacent tuning units or to the radiator, and the rest of the plurality of tuning units is/are configured to be not short circuited to any of the adjacent tuning units or to the radiator; a ground (GND), wherein the plurality of tuning units are arranged in a region between the radiator and the ground; a circuit board formed of a plurality of layers comprising at least a first layer and a second layer; a plurality of first via holes formed in each of the layers, characterized in that the radiator further comprises: a plurality of first via pads provided between the first layer and the second layer adjacent to the first layer, wherein each of the first via pads interconnects a first via hole formed in the first layer and a first via hole formed in the second layer, wherein the first via holes are arranged in one of the layers in a horizontal direction, and respective first via holes formed in one of the layers are aligned with the first via holes formed in another one of the layers such that the radiator is formed in a grid type. a plurality of first via pads provided between the first layer and the second layer adjacent to the first layer, wherein each of the first via pads interconnects a first via hole formed in the first layer and a first via hole formed in the second layer, wherein the first via holes are arranged in one of the layers in a horizontal direction, and respective first via holes formed in one of the layers are aligned with the first via holes formed in another one of the layers such that the radiator is formed in a grid type. <EOS>