A Miniaturized High-Efficiency Rectifier With Extended Input Power Range for Wireless Power Harvesting
Si Ce Wang, Min Jun Li, Mei Song Tong
Abstract
This letter presents a high-efficiency rectifier based on a miniaturized branch-line hybrid coupler (MBLHC), which can be applied to wireless power harvesting (WPH) featuring a wide input power range. Originating from the connection to the MBLHC, two identical subrectifiers are used to achieve less sensitivity to the impedance mismatching, and thus the input power range is extended. For validation, theoretical analysis is carried out and a rectifier working at 5.8 GHz is configured out. The measured results show that the rectifier can achieve a conversion efficiency of more than 60% within the input power range from 2 to 17.5 dBm, and a maximum efficiency of 81% with a more compact size.
Topics & Concepts
Rectifier (neural networks)Power (physics)Electrical engineeringPrecision rectifierElectronic engineeringEnergy conversion efficiencyRange (aeronautics)Input impedanceElectrical impedancedBmWirelessPower semiconductor deviceSensitivity (control systems)EngineeringPower factorComputer scienceVoltagePhysicsTelecommunicationsCMOSAmplifierMachine learningStochastic neural networkRecurrent neural networkQuantum mechanicsArtificial neural networkAerospace engineeringEnergy Harvesting in Wireless NetworksWireless Power Transfer SystemsFull-Duplex Wireless Communications