Antenna structure and image display device including the same

An antenna structure comprising:

• a dielectric layer;
• a first radiation unit disposed on the dielectric layer, the first radiation unit comprising a first radiator and a first transmission line having one end portion connected to the first radiator and the other end portion opposite to the one end portion;
• a second radiation unit disposed on the dielectric layer, the second radiation unit comprising a second radiator that has the same polarization direction as that of the first radiator, and a second transmission line having one end portion connected to the second radiator and the other end portion opposite to the one end portion;
• a third radiation unit disposed on the dielectric layer, the third radiation unit comprising a third radiator that has the same polarization direction as that of the first radiator, and a third transmission line having one end portion connected to the third radiator and the other end portion opposite to the one end portion;
• and
• a fourth radiation unit spaced apart from the first radiation unit, the second radiation unit and the third radiation unit, the fourth radiation unit comprising a fourth radiator and a fourth transmission line, the fourth radiator having the same polarization direction as that of the first radiator, the fourth transmission line having one end portion connected to the fourth radiator,
• wherein the other end portion of the first transmission line, the other end portion of the second transmission line, and the other end portion of the third transmission line have feeding directions parallel to each other,
• wherein a center of the first radiator, a center of the second radiator and a center of the fourth radiator are arranged along a width direction of the dielectric layer,
• wherein an extension direction of the one end portion of the first transmission line, an extension direction of the one end portion of the second transmission line, an extension direction of the one end portion of the third transmission line, and an extension direction of the one end portion of the fourth transmission line are parallel to each other,
• wherein the first radiation unit, the second radiation unit and the third radiation unit serve as a reception radiation unit, and the fourth radiation unit serves as a transmission radiation unit.