National University of Singapore
In this paper, the authors provide an overview of the recent advances in microwave-enabled Wireless Energy Transfer (WET) technologies and their applications in wireless communications. Specifically, they divide their discussions into three parts. First, they introduce the state-of-the-art WET technologies and the signal processing techniques to maximize the energy transfer efficiency. Then, they discuss an interesting paradigm named Simultaneous Wireless Information and Power Transfer (SWIPT), where energy and information are jointly transmitted using the same radio waveform.