VERY COMPACT PALMATE LEAF SHAPED CPW-FED MONOPOLE ANTENNA FOR UWB APPLICATIONS

摘要

This article presents a very compact coplanar waveguidefed planar monopole antenna for ultrawideband (UWB) applications. The antenna consists of a palmate leaf-shaped radiator with a modified shaped ground plane on the same side of the substrate. The measured impedance bandwidth of the proposed antenna is from 3.08 to over 14 GHz with a ratio of about 4.6:1 for VSWR_2. Experimental results show that the proposed antenna has stably omnidirectional H-plane radiation patterns with low cross-polarization level and average peak gain of 3 dBi across the UWB. The antenna dimensions are restricted to 13.5 × 14.8 × 0.8 mm~3.