Guest Editorial: Special Cluster on Antennas and Metasurfaces for Advanced Wireless Power Transfer

Wireless power transfer (WPT) is a key technology for the next generation of wireless technology, e.g., 6G and beyond. By utilizing energy harvesting (EH) techniques, WPT enables a seamless and efficient power supply [1], [2], [3], [4], [5]. Highly efficient and reliable WPT systems are crucial for enabling the deployment of wireless charging solutions for a wide range of low-power applications, such as sensors for health care or ambient monitoring in smart cities. In any scenario involving WPT, antennas play a critical role as they are responsible for efficiently transmitting and receiving electromagnetic waves carrying a specific amount of power. Advancements in antenna design and optimization directly impact the overall efficiency and performance of WPT systems.