RF Energy Harvesting For Charging Low Power Device's

The increasing demand for portable and autonomous electronic systems has created a need for sustainable power sources that do not rely on frequent battery replacement. Energy available in the form of surrounding radio waves can be utilized as a source for powering small-scale electronic systems by converting it into electrical form. In this work, a method is developed to capture such signals and process them into a usable output suitable for low-energy devices like sensor nodes and IoT-based units. The implemented setup combines a planar antenna structure with intermediate circuitry that conditions the received signal before it undergoes conversion into direct current. The antenna is adjusted to operate near the 2.4 GHz band, which is commonly present in everyday wireless environments. Observations from simulation indicate that the structure is capable of receiving available signals effectively, and the subsequent conversion stage delivers a stable electrical output that can be used for practical low- power applications. Although the harvested energy is limited, the proposed system demonstrates the feasibility of battery-free operation for low-power applications and highlights the potential of RF energy harvesting in future self-sustaining electronic systems.