Far-Field Energy Harvesting Rectifier Analysis

An accurate equivalent circuit model to predict the power conversion efficiency (PCE) of a Schottky Barrier Diode (SBD) is presented in this paper. By making use of good insight into the used SBD models and careful analysis of circuit behavior, more efficient rectifier circuits have been identified. An increase in circuit efficiency of 18-25% is shown compared to state of the art, resulting in 20-180% more available energy from the rectifying circuit. Also the accuracy of the simulation results has increased significantly. All the simulations in this paper are performed in a conjugately matched environment, which allows for an objective comparison of different Schottky diodes.