Patent attributes
An antenna structure includes a metal piece, a dielectric substrate, a feeding radiation element, a grounding radiation element, and a grounding metal element. The metal piece has a slot. A lower surface of the dielectric substrate is adjacent to the slot of the metal piece. The feeding radiation element is disposed on an upper surface of the dielectric substrate, and is coupled to a positive electrode of a signal source. The grounding radiation element is disposed on the upper surface of the dielectric substrate, and is coupled to a negative electrode of the signal source. The grounding radiation element is coupled through the grounding metal element to the metal piece. At least one of the feeding radiation element and the grounding radiation element has a vertical projection which at least partially overlaps the slot of the metal piece.
