Wireless RF Powered Sensor Networks

The nodes in wireless sensor networks (WSNs) are generally powered by batteries, whose available power is very limited, and it is difficult or even impossible to replace the batteries. However, WSNs requires months or even years to survive. In recent years, WSNs, which can capture energy in the environment, has been paid more and more attention. Thereinto, WSNs powered by radio frequency (RF) is a very promising one. This paper focuses on the survey of wireless RF powered sensor networks.