Fig. 2: Fabricated unitary universal device and its power-divider layer.

a PCB of the fabricated unitary matrix solver comprising power-divider unit layers (yellow-dashed) and the independent active phase elements (red-dot-dashed) and individually fabricated power-divider layer. This layer is experimentally tested to properly characterize the full unitary matrix solver. b Experimental results of the real parts of the S-matrix for the individually fabricated power-divider layer (matrix F). c Transmission matrix (normalized) of the individually fabricated power-divider unit at selected frequency points, including the target operational frequency (red-dashed).