This work demonstrates the design of an adaptive reconfigurable rectifier to address the issue of early breakdown voltage in a conventional rectifier and extends the rectifier's operation for wide dynamic input power range. A depletion-mode field-effect transistor has been introduced to operate as a switch and compensate at low and high input power levels for rectifier. This design accomplishes 40% of RF-DC power conversion efficiency over a wide dynamic input power range from -10 dBm to 27 dBm, while exhibiting 78% of peak power efficiency at 22 dBm. The power harvester is designed to operate in the 900 MHz ISM band and suitable for Wireless Power Transfer applications.

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Keywords Rectifier, Schottky diode, wireless power transfer, wirless power sensor
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Conference 16th Mediterranean Microwave Symposium, MMS 2016
Almohaimeed, A.M., Yagoub, M.C.E., & Amaya, R. (2017). A highly efficient power harvester with wide dynamic input power range for 900 MHz wireless power transfer applications. In Mediterranean Microwave Symposium. doi:10.1109/MMS.2016.7803790