Antenna structure including parasitic conductive plate

An antenna structure is provided. The antenna structure includes at least one feeder, a plurality of dielectric substrates, a plurality of conductive plates disposed between the plurality of dielectric substrates, the plurality of conductive plates including at least one opening, and a radiator electrically connected to the at least one feeder through conductive vias in the plurality of dielectric substrates and the plurality of conductive plates. The radiator includes a plurality of first parasitic conductive plates spaced apart from each other, and a second parasitic conductive plate disposed between the plurality of first parasitic conductive plates, the second parasitic conductive plate being spaced apart from the plurality of first parasitic conductive plates.