Antenna structure with periodic patterns

An antenna structure, at least comprising a chip antenna, wherein the chip antenna comprises:

• a carrier, being a square body with a top surface and a bottom surface;
• a first radiating unit, arranged on the top surface of the carrier, wherein the first radiating unit comprises:
• two upper radiating layers, at least two periodic pattern layers, and a side radiating layer;
• the two upper radiating layers are respectively arranged at two ends of the top surface;
• the at least two periodic pattern layers are symmetrical and electrically connected between the two upper radiating layers;
• the at least two periodic pattern layers are arranged on the top surface in a coupling relationship;
• one side between the two upper radiating layers and the at least two periodic pattern layers is electrically connected to the side radiating layer;
• a second radiating unit, arranged on the bottom surface of the carrier, wherein the second radiating unit comprises:
• a first lower radiating layer and a second lower radiating layer;
• and
• an electric conductor, arranged inside the carrier and through the carrier, one end of the electric conductor electrically connected to the two upper radiating layers, the other end of the electric conductor electrically connected to the first lower radiating layer and the second lower radiating layer.