Ubiquitous signal scavenging circuit for energy reaping (USER)

The intention of the work is to investigate the usage of RF signals that is present in the atmosphere and convert it into a useful DC power that can drive wireless sensor nodes. As sensor node cannot be charged manually by replacing its battery and identifying the node without of power is difficult, so the use of RF power harvesting can solve this problem. The work also revolves around the idea that alternate energy provided to wireless sensor node would make it immortal and would provide a constant link with the main node. The selection of bandwidth for RF signals and the design of the circuits for the energy harvesting can be discussed further. The circuits and antenna are embedded with the sensor node so that an alternate source of energy is found by the sensor node itself.