Study and Design of a 2.45-GHz Rectifier Achieving 91% Efficiency at 5-W Input Power
Ce Wang, Bo Yang, Naoki Shinohara
Abstract
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.
Topics & Concepts
Rectifier (neural networks)Schottky diodeEnergy conversion efficiencySpiceWireless power transferDiodeElectrical engineeringEquivalent series resistancePower (physics)VoltagePower semiconductor deviceElectrical efficiencyMaterials scienceOptoelectronicsElectronic engineeringEngineeringComputer sciencePhysicsMachine learningElectromagnetic coilArtificial neural networkRecurrent neural networkQuantum mechanicsStochastic neural networkEnergy Harvesting in Wireless NetworksWireless Power Transfer SystemsAdvanced MIMO Systems Optimization