Design of Efficient Rectifier Circuit in the GSM band for Energy Harvesting Applications

a single band compact rectifying circuit operating in the GSM-900 band of frequency is proposed. The proposed RF rectifying circuit employs two-stage Dickson charge pump configuration along with the optimized impedance matching unit comprising of lumped components. The RF rectifying circuit is designed using the Advanced Design System (ADS) software, and is fabricated on a low cost FR-4 substrate. The dimension of the fabricated circuit is 6 x 4 x 1.6 cm3 thus making it quite compact. The overall performance of the designed circuit is evaluated for different types of load conditions. The maximum RF to DC conversion efficiency of 60% is achieved at 0 dBm input RF power for a 5 k Omega load.