Rectennas for Microwave-Based Wireless Power Transfer (WPT)

Abstract

Electromagnetics has an important role in power and energy industry. In this chapter, the concept of rectenna is reviewed. The history of rectenna for wireless energy harvesting and transmission is discussed. Finally, examples are employed to illustrate some rectenna design and measurement issues such as rectenna impedance matching and its conversion efficiency. It is also shown that rectennas can harvest wireless energy efficiently under certain conditions and have the potential to become a power supplier for some special applications.