A compact monopole fractal antenna for TV white space energy harvesting applications

In this paper, a compact monopole fractal antenna for the TV white space frequency band is designed and fabricated for energy harvesting applications. The monopole is designed by the combination of modified Giuseppe Peano fractal geometry and impedance steps and fabricated on a 1.6mm thick FR-4 substrate. The feeding circuit is designed to be a microstrip line with a semi-circular ground plane. The antenna resonates at 600MHz and shows omni-directional radiation patterns with a measured gain of 1.71dBi. A size reduction of 52% is achieved as compared to the conventional planar monopole antenna.