Optimal Design of RF Energy Harvesting Device Using Genetic Algorithm

摘要

This paper presents optimal design of an RF energy harvesting devicernusing genetic algorithm (GA). In the present RF harvester, a planar spiral antennarn(PSA) is loaded with matching and rectifying circuits. On the first stage of thernoptimal design, the shape parameters of PSA are optimized using μGA. Then, thernequivalent circuit of the optimized PSA is derived for optimization of the circuits.rnFinally, the parameters of RF energy harvesting circuit are optimized to maximizernthe output power using GA. It is shown that the present optimization increases thernoutput power by a factor of five. The manufactured energy harvester starts workingrnwhen the input electric field is greater than 0.5 V/m.