Patent ID: 7505004

Claim:
A broadband antenna comprising: a radiating element having a first metal plane, a second metal plane and a third metal plane, wherein the first metal plane is connected to the second metal plane and the second metal plane is connected to the third metal plane, wherein the first metal plane is parallel with the third metal plane, and the second metal plane is perpendicular to the first metal plane and the third metal plane to form a U-shape structure; a grounding element, wherein the first metal plane and the third metal plane are both parallel with the grounding element, and the second metal plane is perpendicular to the grounding element so an opening of the U- shaped structure faces toward the grounding element; a connecting element having a first end and a second end, wherein the first end is electrically connected to the radiating element, and the second end is electrically connected to the grounding element; and a feed line, wherein the feed line is electrically connected to the first end of the connecting element.