A small couple slotted antenna for ultra wideband application

The demand for ultra wideband (UWB) communications is rapidly increasing due to the need to support more users and to provide more information with higher data rates. With appropriate technical standards, UWB devices can operate using spectrum occupied by existing radio services without causing interference, thereby permitting scarce spectrum resources to be used more efficiently. This paper presents a small couple slotted antenna for UWB application. This proposed antenna uses a couple of L and U slot to broader the bandwidth. Truncated ground plane is also used to control the antenna´s impedance matching. Those both slots were designed by investigating the behaviour of current distribution of the patch antenna. The total antenna´s dimension is 30 mm × 30 mm and fed by microstrip line. Both simulated and measured results have shown a good return loss with respect to -10 dB and nearly omni-directional pattern over 2.5 GHz to 10.1 GHz. Thus, this proposed antenna is as potential candidate in UWB application. The simulation results in this paper are obtained from Zeland simulation, which are based on the FDTD method.