Patent ID: 8026856

Claim:
An antenna comprising: a metallic sheet defining a first slot, a second slot, a third slot parallel to the first slot, a fourth slot parallel to the second slot and a fifth slot parallel to the third slot, the second slot perpendicularly connecting the first slot to the third slot and having a length smaller than that of the fourth slot, the fourth slot perpendicularly connecting the third slot to the fifth slot, the third slot having a length greater than the length of the first slot, the fourth slot extending perpendicularly from an end of the third slot away from the second slot with the extending direction same as the extending direction of the second slot from the third slot, the fifth slot extending perpendicularly from an end of the fourth slot away from the third slot with the extending direction the same as the extending direction of the third slot from the fourth slot, the extending direction of the first slot from the second slot being the same as the extending direction of the third slot from the second slot, the metallic sheet comprising a first longitudinal side and a second longitudinal side opposite to the first longitudinal side, the first slot partially bounded by the first and second longitudinal sides; a feeding point formed on the first longitudinal side; and a grounding point formed on the second longitudinal side.