Guest Editorial: Special Cluster on Space–Time Modulated Antennas and Materials

The fifteen papers in this special section highlights some of the recent developments, advances, and new frontiers in the framework of space–time modulated antennas and materials, in which the time dimension is exploited as additional degree of freedom to control the wave generation and propagation. Moreover, the goal is also to showcase their potential applications to antennas and propagation problems as well as to increase their awareness within the electromagnetic community.