Dual-band antenna structure

The invention discloses a double frequency antenna structure. The antenna is composed of planar metal chips; the antenna is provided with a grounding area with a U-shaped bottom and impedance matching parts at two sides; a first radiator beginning end is extended from a first junction of the grounding area and the impedance matching part at one side; the first radiator beginning end is extended towards a second junction of the grounding area and the impedance matching part at the other side, and is bent in an arc shape; the arc-shaped bent tail end is turned and vertically extended upwards to a second radiator; the second radiator beginning end is extended towards the first junction and is bent in the arc shape, so as to form the overall antenna.