Phase Shifter Bank

Power divider and phase shifter banks of macro-cell RF beamformer: Decomposition of power divider bank into balanced (green) and unbalanced Wilkinson power dividers (red). For a given Nt × Ntrx arrangement, the unbalanced ratios of power dividers as well as the phase shifts are obtained by the multi-stage Wiener decomposition algorithms proposed in Sec. 3 and Sec. 4.