Simple RF Energy Harvesting Circuit Using AMC Backed Bowtie Antenna

In this paper, a simple RF energy harvesting circuit operating at 1800 MHz to energize low power electronic circuits is proposed. The proposed RF harvesting circuit is based on the novel design of a bow-tie dipole antenna extracting the RF energy from the cellular band of 1800 MHz. The designed antenna is quite robust, whose gain may be further increased with the help of a specially designed artificial magnetic conductor (AMC) and a metal reflector placed at the back side. The antenna is integrated with a Villard voltage doubler based rectifier and the impedance matching unit working in the specified frequency band which provide the maximum simulated efficiency of 59.4%. The antenna is designed using the full wave simulator, the CST studio, and the rectifier along with the matching circuit is simulated using the ADS circuit simulator.