ULTRA COMPACT SEMICIRCULAR SLOT ANTENNA FOR UWB COMMUNICATIONS

An ultra compact dipole antenna with a semicircular slot suitable for UWB application is developed and discussed. The developed antenna offers a 2:1 VSWR bandwidth starting from 2.92 GHz to 11.34 GHZ which is wide enough to cover the FCC specified UWB frequency spectrum. This antenna offers an average gain of 5.1 dBi in the entire frequency band with greater than 90% radiation efficiency. Developed antenna has an overall volume of 20.3 × 14 × 1.6 mm3 which is compact when compared with other antennas designs. Another attraction of the proposed structure is the simplicity and less number of dimensional aspects and which makes it a suitable candidate in latest generation communication gadgets.