%L elediasc12438 %T Planar monopole UWB antenna with WLAN-band notched characteristics %X In this paper, a planar monopole antenna for Ultra-Wideband (UWB) communications with a notched behavior in the two sub-bands UNII1 and UNII2 of the Wireless Local Area Network (WLAN) band is presented. The antenna geometry is described by means of a spline curve and a rectangular slot. Numerical and experimental results are reported to assess the effectiveness of the proposed design in terms of impedance matching and radiation characteristics. “(c) The Electromagnetic Accademy. The final version of this article is available at the url of the journal PIERB http://www.jpier.org” %D 2011 %A Leonardo Lizzi %A Giacomo Oliveri %A Paolo Rocca %A Andrea Massa %I University of Trento %K Antenna Synthesis, Ultra-Wideband (UWB), Spline Curves, WLAN, UNII, Band Notch