Patent ID: 7768464

Claim:
An antenna device adapted to be used in an electrical device and electrically connected to a conductor shell of the electrical device, comprising: a supporting body having two arms substantially parallel with each other and a connecting portion disposed between and connected with the two arms at lower portions of the two arms; and an antenna having a grounding portion extending from one end of one of the arms of the supporting body, a free end of the grounding portion extending toward the other arm to form a first radiating strip substantially perpendicular to the grounding portion, a free end of the first radiating strip extending downwardly to form a second radiating strip substantially perpendicular to the first radiating strip, a free end of the second radiating strip extending toward the grounding portion to form a third radiating strip substantially perpendicular to the second radiating strip, a free end of the third radiating strip extending toward the first radiating strip to form a fourth radiating strip substantially perpendicular to the third radiating strip, a feed-in portion extending toward the third radiating strip from the first radiating strip, the first, second, third and fourth radiating strips together defining substantially a rectangular shape.