Patent ID: 8035566

Claim:
A multi-band antenna, comprising: an elongated grounding plate disposed levelly with a first end and a second end defined at a longer side thereof, the longer side having an upward first connecting portion adjacent to the first end, a vertical second connecting portion extending along the longer side and opposite to the first end from an upper portion of the first connecting portion and being spaced away from the grounding plate; a feeding portion extending downwards from a lower edge of the second connecting portion, and spaced away from the grounding plate; a first antenna radiator extended towards a same direction with respect to the second connecting portion along the grounding plate from an upper side of the second connecting portion, the first antenna radiator parallel to the grounding plate and elongated along an extending direction of the grounding plate; a second antenna radiator, the second antenna radiator including a first radiating portion extended towards the second end from a side of the second connecting portion facing the second end and longer than the first antenna radiator, a second radiating portion extended upwards from a free end of the first radiating portion, and a third radiating portion prolonged opposite to the first radiating portion from a top end of the second radiating portion, the third radiating portion substantially flush and aligned with the first antenna radiator; a third antenna radiator parallel to the first radiating portion and connected to a side of the feeding portion extending toward the second end; and a coupling component connected with the second end of the longer side and including a first section extending towards the third radiating portion, with a top edge lower than the third radiating portion, a second section extending perpendicularly and away from the third radiating portion from a free end of the first section, and a third section extending opposite to the first section from a free end of the second section and beyond the third radiating portion.