Modeling Schottky Diode Rectifiers Considering the Reverse Conduction for RF Wireless Power Transfer

• Published in: IEEE transactions on circuits and systems. II, Express briefs Vol. 69; no. 3; pp. 1732 - 1736
• Main Authors: Trevisoli, Renan, Paz, Humberto P. da, Silva, Vinicius S. da, Doria, Rodrigo T., Casella, Ivan R. S., Capovilla, Carlos E.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-03-2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Capacitance; Diode model; Diode rectifiers; Diodes; Energy conversion efficiency; Energy harvesting; Impedance; Inductors; Load matching; Load modeling; Mathematical model; power efficiency; radio frequency; rectifier; Resistance; Schottky diodes; Time domain analysis; Wireless power transmission
• ISSN: 1549-7747; 1558-3791
• DOI: 10.1109/TCSII.2021.3102576

The aim of this work is to model Schottky diodes series rectifier for application in Radio Frequency Energy Harvesting (RFEH). A time-domain approach is proposed, including the reverse conduction of the diodes, which can significantly degrade the Power Conversion Efficiency (PCE) as the diode input power increases. The influences of the load, temperature, matching network and choke inductor have also been considered. The representativeness of the model was validated by means of computer simulations and experimental results.