Title :
An Adaptive Reconfigurable Rectifier for Wireless Power Transmission
Author :
Hucheng Sun ; Zheng Zhong ; Yong-Xin Guo
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore
Abstract :
This letter presents a novel adaptive rectifier for wireless power transmission (WPT) applications. By utilizing a depletion-mode field-effect transistor (FET) switch, the configuration of the rectifier can automatically adapt to the input power level. Compared with traditional rectifiers, it can provide a consistent high RF-to-dc power conversion efficiency (PCE) over a significantly extended operating input power range. Measured results show that the PCE of this proposed adaptive rectifier keeps above 50% in the input power range spanning from -14 up to 21 dBm. Additionally, maximum PCE of more than 75% is achieved in the input power range from 5 to 15 dBm.
Keywords :
field effect transistor switches; inductive power transmission; rectifying circuits; switching convertors; FET; PCE; RF-to-DC power conversion efficiency; WPT; adaptive reconfigurable rectifier; depletion-mode field-effect transistor switch; wireless power transmission; Field effect transistors; Power measurement; Schottky diodes; Threshold voltage; Topology; Voltage measurement; Wireless communication; Rectifier; switch; wireless power transmission (WPT);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2013.2250272
