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Electrical and Computer Engineering
Energy harvesting is the process by which energy is derived from external sources (e.g., solar power, thermal energy, wind energy, salinity gradients, and kinetic energy, captured, and stored for small, wireless autonomous devices. The design, simulation and implementation of a radio frequency direct current (RF-DC) rectifier for use in an RF Energy Harvester is presented here. The radio frequency energy harvesting (RFEH) system developed in this paper scavenges energy from electromagnetic waves present in ambient sources to generate usable DC power for use in everyday low voltage systems. Unlike traditional power sources, which are typically voltage sources, the RF ambient energy harvester does not provide constant voltage or constant current but rather constant power.When harvesting energy from ambient energy sources, it is not a feasible technique to analyze current and voltage of each energy source.In the proposed design, the RF-DC conversion system is modified to passively amplify the available voltage for rectification by developing a resonator with a high quality factor. Passive amplification and rectification is implemented using a combination of clamper and peak detector circuit.
Dey, Kowshik, "Dual Band Rectifiers for RF Energy Harvester" (2018). 2018 IPFW Student Research and Creative Endeavor Symposium. 10.