ULTRA-WIDEBAND SLOT ANTENNA WITH BAND-NOTCH CHARACTERISTICS FOR WIRELESS USB DONGLE APPLICATIONS

A compact ultra-wideband (UWB) printed slot antenna is described, suitable for integration with the printed circuit board (PCB) of a wireless, universal, serial-bits dongle. The design comprises of a near-rectangular slot fed by a coplanar waveguide (CPW) printed on a PCB of size 20 X 30 nm(2). It has a large bandwidth covering the 3.1-10.6 GHz UWB band, with omnidirectional radiation patterns. Further, a notched band centered at 5.45 GHz wireless local area network bands is obtained within the wide bandwidth by inserting a narrow slot inside the tuning stub. Details of the antenna design are described, (aid the experimental results of the constructed prototype are presented. The time domain studies on the antenna shows a linear phase response throughout the band except at the notched frequency,. The transient analysis of the antenna indicates vert little pulse distortion confirming its suitability for high speed wireless connectivity. (C) 2009 Wiley Periodicals. Inc. Microwave Opt Technol Lett 51: 1500-1504, 2009 Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24385