Design of Class E resonant rectifiers and diode evaluation for VHF power conversion

Resonant rectifiers have important applications in very-high-frequency (VHF) power conversion systems, including dc-dc converters, wireless power transfer systems, and energy recovery circuits for radio-frequency systems. In many of these applications, it is desirable for the rectifier to appear as...

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Bibliographic Details
Main Authors: Santiago-Gonzalez, Juan A., Elbaggari, Khalil M., Afridi, Khurram K., Perreault, David J.
Format: Conference Proceeding
Language:English
Subjects:
Capacitance
Current measurement
Design methodology
Impedance
Integrated circuit modeling
Rectifiers
Voltage measurement
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Summary:Resonant rectifiers have important applications in very-high-frequency (VHF) power conversion systems, including dc-dc converters, wireless power transfer systems, and energy recovery circuits for radio-frequency systems. In many of these applications, it is desirable for the rectifier to appear as a resistor at its ac input port. However, for a given dc output voltage, the input impedance of a resonant rectifier varies in magnitude and phase as output power changes. This paper presents a design methodology for Class E rectifiers that maintain near-resistive input impedance along with the experimental demonstration of this approach. Resonant rectifiers operating at 30 MHz over 10:1 and 2:1 power ranges are used to validate the design methodology and identify its limits. Furthermore, a number of Si Schottky diodes are experimentally evaluated for VHF rectification and categorized based on performance.
ISSN:2329-3721
2329-3748
DOI:10.1109/ECCE.2014.6953763