Patent ID: 7126544

Claim:
A microstrip antenna having a slot structure, said microstrip antenna comprising: a base board having a first surface and a second surface, wherein said first surface is parallel to said second surface; and a microstrip patch radiator formed on said first surface of said base board, wherein said microstrip patch radiator has said slot structure exposing a portion of said base board, said slot structure having: a T-shaped slot composed of a first linear slot and a second linear slot, wherein said first linear slot is vertical to a side of said microstrip patch radiator, and vertically connects said side to a middle position of said second linear slot; an L-shaped slot, wherein one end of said L-shaped slot is vertically connected to one end of said second linear slot, and the opening direction of said L-shaped slot faces towards said first linear slot; and a reversed-L-shaped slot, wherein one end of said reversed-L-shaped slot is vertically connected to the other end of said second linear slot, and the opening direction of said reversed-L-shaped slot faces towards said first linear slot, and said L-shaped slot and said reversed-L-shaped slot are mirror-reflected to each other.