Ultrawideband antenna

This invention generally relates to wideband antennas, and in particular to antennas for transmitting and receiving ultrawideband (UWB) signals. An antenna comprises an antenna body having an antenna feed coupling region for coupling an antenna feed to the antenna. The antenna body effectively comprises a plurality of substantially straight conducting elements, said conducting elements having lengths ranging from a first length to a second, shorter length, a said length defining a resonant frequency of a said element. Each of said conducting elements has a proximal end in said coupling region, a said element having either said first length or said second length defining an antenna axis, said elements being disposed at angles to said antenna axis. The length of an element at an angle to said antenna axis is determined by a linear relationship between the angle and the resonant frequency for the length.