A high gain six band frequency independent dual CP planar log periodic antenna for ambient RF energy harvesting

A six band frequency independent dual circular polarized planar log periodic antenna, with high gain and best axial ratio, for ambient radio frequency (RF) energy harvesting is presented. It is designed to harvest energy from six bands within the frequency range from 650 MHz to 2500 MHz that covers various wireless standards (Digital TV band, Cellular bands and Wi Fi bands). The important properties of presented antenna are high gain up to 7.2dBi, high radiation efficiency and good axial ratio for all six wireless standards. The simulated and measured S
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results showed good comparison within all six bands.