Patent ID: 8269676

Claim:
A dual-band antenna for a portable wireless communication device, comprising: a first antenna unit for receiving and/or sending radio frequency signals generating a low resonant frequency, the first antenna unit comprising: a first radiation member for generating radio signal; and a second radiation member for generating radio signal; and a second antenna unit for receiving and/or sending radio frequency signals generating a high resonant frequency, and the second antenna unit connected to the first antenna unit, the second antenna unit comprising: a feed portion receiving radio frequency signals and electrically connected to the first radiation member and the second radiation member; two slots being adjacent to one side of the first antenna unit and symmetrically defined at two sides of the feed portion; two gaps being parallel with each other, extending away from the first antenna unit, symmetrically defined at two sides of the feed portion and each gap communicating with one corresponding slot; and two grounding sheets symmetrically positioned at two sides of the feed portion; wherein both the first radiation member and the second radiation member are L-shaped plates and are symmetric on the feed portion, and the first radiation member and the second radiation member are coplanar with the second antenna unit.