A Broadband Rectifier Using Two Rectifier Branches for Ambient RF Power Harvesting

This paper presents a broadband rectifier for ambient RF power harvesting. Two rectifier branches are combined in the rectifier design to extend the working bandwidth. The simulated results show the maximum RF to DC conversion efficiency is 77.6% at 1.4 GHz with an input power level of 5 dBm. From 1.26 to 2.44 GHz, the return loss is better than 10 dB with an input power of 0 dBm while the conversion efficiency is better than 60%.