A novel rectifier for wireless power transmission with a wide input power range

This paper presents a novel rectifier with a considerably expanded operating input power range for wireless power transmission (WPT) applications. By utilizing a depletion-mode metal-oxide-semiconductor field-effect transistor (MOSFET), the diode´s breakdown voltage can be enlarged while preserving the same threshold voltage. Therefore, compared with traditional rectifiers, this proposed rectifier can perform a high RF-to-dc power conversion efficiency (PCE) in a much wider input power range. The rectifier´s performance has been proved by measurement results, which show that a PCE above 50% can be achieved over the input power range from -13.5 to 16.7 dBm.