An elevation and azimuth direction-finding (DF) method is presented by introducing the pattern reconfigurable antenna (PRA) into a two-element array. An equivalent multidimensional array is built by ...

Indoor mmWave-based sensing technologies have garnered substantial interest from both the industrial and academic. Yet, the intrinsic challenge posed by the limited Field-of-View (FOV) of mmWave ...

The geometric phase has become a foundational element in modern metasurface design for optical phase and wavefront control. Here, we introduce the concept of geometric polarization, in which the ...