A Highly Efficient Power Management System for Charging Mobile Phones using RF Energy Harvesting

RF energy harvesting holds a promise able future for generating a small amount of electrical power to drive partial circuits in wirelessly communicating electronics devices. RF power harvesting is one of the diverse fields where still research continues. The energy of RF waves used by devices can be harvested and used to operate in more effective and efficient way. This paper highlights the performance of energy harvesting in an efficient way by using a simple voltage doubler. With slight modifications we attained high output voltage from harvested RF energy. The modified form of existing schottky diode based voltage doubler circuit is presented to achieve high output power for an average input RF power of 20 dBm. The performance of the circuit is studied with simulation results in ADS tools. Also in this paper we are proposing an application where this circuit that can receive the transmitted RF signals from the Bluetooth of any other device and extract power efficiently from the received signal.

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