An IOT Based Wireless Energy Harvesting System Using Hybrid Voltage Multiplier Stages in an RF to DC Converter

S. Yawas, A. M. S. Tekanyi, H. A. Abdulkareem, Agbon E. E., U. F. Abdul-Aguye, M. D. Almustapha

Abstract


The Internet of Things (IoT) is a technology that enables machines to communicate and exchange data with each other without much human intervention, with the aim of enhancing the quality of life. To achieve efficient data transmission, low-cost sensor nodes, actuators, and similar devices generate, exchange, and process data autonomously. However, energy consumption is a significant challenge for IoT nodes due to limited battery power. Energy harvesting, which involves capturing transmitted RF energy from the environment and using it to power low-power devices or store it for future use, is a promising solution to improve energy efficiency. However, one of the major challenges in energy harvesting is receiving extremely low-level signals from captured RF energy. To address this issue, this study developed a Hybrid Voltage Multiplier (HVM) stage that improves the output voltage of the existing Villard Voltage Multiplier stages. By using a Greinacher Voltage Multiplier circuit and a buck-boost converter, the HVM modifies the VVM circuit. Simulation results showed that the HVM modified with a Greinacher Voltage Multiplier circuit improved the output voltage by 4.76% when compared to other existing works. The simulation tool used in this study was Multisim 13.0."


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References


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