Optimized profile planar UWB monopole antenna for optimal adaptation

An optimized profile UWB monopole antenna for use in the 2-11 GHz band has been designed, built and measured. Better than 18 dB return losses have been computed and measured in a valid prototype. Good agreement between computer analysis and measurements has been found. Radiation pattern analysis shows a monopole-like behaviour, with an increasing ripple as frequency gets higher. Fortunately, radiation patterns remain stable for the thetas = plusmn90deg which is the direction of maximum radiation and therefore the direction of interest. All these characteristics make this antenna and excellent choice for UWB systems needing very low return losses, a planar profile and omnidirectional monopole like radiation patterns.