%0 Journal Article %T Ism Band Rectenna Using a Ring Loaded Monopole %A Giuseppina Monti %A Laura Corchia %A Luciano Tarricone %J PIER C %D 2012 %I EMW Publishing %R 10.2528/PIERC12082813 %X This paper proposes a rectifying antenna (rectenna) for operation in the ISM (Industrial, Scientific and Medical) band centered at 2.45 GHz. It consists of a modified circular monopole loaded with a rectangular ring and a half-wave rectifier. Numerical and experimental data are reported and discussed. From measurements, it is demonstrated that, when the power density incident on the monopole is 155 ¦ÌW/cm2, the device here presented exhibits values of the RF-to-DC conversion efficiency higher than 30 % in the frequency range 2.35-2.5 GHz with a maximum of about 50 % at 2.45 GHz. %U http://www.jpier.org/pierc/pier.php?paper=12082813