A Compact Semicircular Dongle Sized Antenna for UWB Communication

In this paper, a compact dongle sized UWB antenna is presented. The proposed antenna consists of a dongle size radiator and three rectangular slots to achieve ultra-wideband impedance bandwidth from 3 GHz to 10.6 GHz, respectively. The overall layout make the antenna have a size of 15×37 mm2 which is suitable for UWB communication. Moreover the antenna has a peak gain of 4dBi, group delay profile is within 1ns and has a satisfactory radiation characteristics. Recent advances in UWB communication and demand in wireless personal area network (WPAN) network has resulted in increased research and development of UWB antennas (1-5). Ever since the release of FCC guidelines, demands in design and development of dongle sized UWB antennas to make it compatible with USB dongles for UWB communications. Size constraint of various wireless devices has resulted in development of dongle sized antennas which stimulated in proposal of many miniaturization techniques as reported in (6-8). During the last few years of research, few USB compatible UWB antennas have been developed (9-10). In this paper, a compact sized antenna has been proposed which is easily integrable with USB dongle. The Antenna exhibit a broad impedance bandwidth which covers almost the full UWB spectrum. Rest of the paper is organized as follows. Section II deals with dongle size antenna design and analysis of some parametric study. Result and discussion is presented in section III with concluding remarks in section IV.