Ambient RF EH

This chapter investigates the ambient radio frequency (RF)–energy harvesting (EH) technology. It provides a classification according to the nature of the ambient RF source, say, static or dynamic, while showing key typical examples of each. Energy efficient scheduling algorithms that minimize the energy consumption of the power grid, while ensuring the service requirements, are necessary. The chapter discusses some approaches for enabling efficient ambient RF–EH. These include: tunable‐band harvesters, high‐gain multi‐directional rectenna, and large harvesting surfaces. The chapter discusses the possibility of using hybrid, EH–power grid, implementations for meeting more demanding energy requirements in the context of future wireless systems. The chapter presents the details of energy arrival modeling. The models for energy arrival/availability in the literature are primarily divided into two classes: deterministic and stochastic models. The chapter also provides a tractable analytical framework for statistical feasibility analysis of ambient RF–EH.