In this presentation, I will explore the fascinating realm of wireless energy harvesting (WEH) and wireless power transfer (WPT). WEH focuses on efficiently obtaining energy from the wireless environment, while WPT involves the wireless transmission of energy. The key device connecting these two technologies is the rectifying antenna, also known as the rectenna. While WEH aims to harvest energy across a broad range of frequencies, WPT is designed for efficient energy transfer within specific frequency bands. My talk will begin with an overview of rectenna systems developed thus far, highlighting the challenges in maximizing power conversion efficiency—the crucial performance metric for rectennas. Most current research in this field is focused on RF and microwave frequencies. However, I will discuss the exciting potential of extending this research to higher frequencies, particularly for harnessing solar energy—the largest energy source available to us. Furthermore, I will present noteworthy research conducted at the University of Liverpool, showcasing innovative work in WEH and WPT. We will delve into diverse areas of exploration, including the integration of communication and wireless power transfer, which holds promising prospects for the future. Wireless energy harvesting and power transfer technologies have the potential to revolutionize our energy landscape. By improving rectenna systems and venturing into higher frequencies, we can unlock new possibilities for wireless energy generation. Speaker(s): Professor Yi Huang, Virtual: https://events.vtools.ieee.org/m/374451