Guest Editorial: Special Cluster on Intelligent and Highly Efficient Antennas/Metasurfaces for 6G

6G technologies are poised to revolutionize telecommunications in the coming decade, building on the commercial deployment of 5G systems. The evolution of 6G is expected to unlock transformative applications, such as connected intelligence, smart cities, artificial intelligence (AI), and digital twins, among others. To support these advancements, antennas and metasurfaces, being fundamental components of wireless systems, will play a pivotal role in shaping and expanding 6G's capabilities.