Design of low power RF to DC generator for energy harvesting application

Abstract

This paper describes the design of a voltage doubler with matching circuit using Schottky diode HSMS-2850 and microstrip rectangular patch antenna array for RF energy harvesting application. Microstrip rectangular antenna array and two stage voltage doubler or charge pump circuit are designed for capturing directed electromagnetic energy and convert into suitable DC voltage. Simulation results show that a DC voltage of 0.747 V can be achieved at −10dBm input energy level at 2.4 GHz when load is 20 Kohm. This paper also describes microstrip rectangular patch antenna array (2x2) for increase the input energy level at 2.4 GHz frequency.