Search results for "Impedance and Voltage matching"

showing 2 items of 2 documents

Evaluation of an Optical Energy Harvester for SHM Application

2019

Abstract In this paper a preliminary study on an array configuration of rectified optical nanoantennas for energy harvesting application is proposed. Currently, the major impediments for the use of the rectified optical nanoantenna known as rectenna are the relatively low conversion efficiency and low power transfer to the load, both of them caused mainly by the mismatch between the impedance of the rectifier (several kilo ohms) and that of the antenna (hundreds of ohm). For this reason, the design of the array represents a crucial point to obtain the maximum energy transfer from the rectenna to the load, represented as a typical DC/DC boost power converter, and modeled by an equivalent inp…

Computer sciencebusiness.industryImpedance matchingElectrical engineeringImpedance and voltage matching Optical rectennas array Rectenna Structural Health Monitoring (SHM)020206 networking & telecommunications02 engineering and technologySettore ING-INF/01 - Elettronica03 medical and health sciencesRectifierRectenna0302 clinical medicine0202 electrical engineering electronic engineering information engineeringMaximum power transfer theoremStructural health monitoringElectrical and Electronic EngineeringAntenna (radio)businessEnargy Harvesting Nanoantennas Structural Health MonitoringEnergy harvestingElectrical impedance030217 neurology & neurosurgery
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Optimal matching between optical rectennas and harvester circuits

2017

This paper deals with optimal coupling issues between rectennas and harvesting circuits. An optical rectenna consists of a nanoantenna usually coupled with an ultra-high speed rectifier. These devices aim to receive and convert solar and thermal radiation in a DC voltage, while a harvester circuit provides the energy to be stored. The rectenna impedance is influenced both by its structure and by the rectifying diode, the harvester circuit impedance has to be matched to optimize the power transfer. The purpose of this contribution is to discuss the best impedance conditions by taking into account the constraints that are due to the individual devices the conversion system consist of. Finally…

energy harvestingEngineeringEnvironmental EngineeringrectennaEnergy Engineering and Power Technology02 engineering and technologyHardware_PERFORMANCEANDRELIABILITYSettore ING-INF/01 - Elettronica01 natural sciencesIndustrial and Manufacturing EngineeringRectifier0103 physical sciencesElectronic engineeringHardware_INTEGRATEDCIRCUITSMaximum power transfer theoremElectrical and Electronic Engineering010306 general physicsElectrical impedanceElectronic circuitDiodeimpedance matchingbusiness.industryElectrical engineering021001 nanoscience & nanotechnologyRectennaImpedance and Voltage matchingnanoantenna0210 nano-technologybusinessEnergy harvestingEnergy (signal processing)
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