US Patent 7439912 Ultra-wideband antenna

An ultra-wideband (UWB) antenna (10), disposed on a substrate (30), includes a body (100), a feeding part (160), and at least one first ground plane (120). The body, for receiving and transmitting electromagnetic signals, includes a first radiating part (102) and a second radiating part (104) connected to the first radiating part. The body defines a gap (106) between the first radiating part and the second radiating part. The feeding line, electrically connected to the body, feeds electromagnetic signals to the body. The at least one first ground plane is disposed on a side of the feeding part, and is grounded.