Study and Design of a 2.45-GHz Rectifier Achieving 91% Efficiency at 5-W Input Power

To achieve a high-efficiency microwave wireless power transfer system, a high conversion efficiency rectifier is necessary. Brown (1974) designed rectifiers with approximately 3-W input power achieved 90% conversion efficiency for 2.45 GHz, and it maintains the record for maximum conversion efficien...

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Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 31; no. 1; pp. 76 - 79
Main Authors Wang, Ce, Yang, Bo, Shinohara, Naoki
Format Journal Article
LanguageEnglish
Published IEEE 01.01.2021
Subjects
Capacitance
Junctions
Load modeling
Microwave circuits
rectifiers
Resistance
Schottky diodes
Temperature measurement
Voltage measurement
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Summary:To achieve a high-efficiency microwave wireless power transfer system, a high conversion efficiency rectifier is necessary. Brown (1974) designed rectifiers with approximately 3-W input power achieved 90% conversion efficiency for 2.45 GHz, and it maintains the record for maximum conversion efficiency. In this study, to design a high-efficiency and high-power rectifier, we designed a larger semiconductor metal junction area GaAs Schottky diodes possessing very low series resistance and high breakdown voltage. In addition, we built the SPICE model and package model for the diodes. The designed high conversion efficiency rectifier achieved 91% efficiency at 5-W input power for 2.45 GHz.
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2020.3032574