Mitigating Beam-Split Effects in Near-Field Wideband Communications: A Modular Rotatable Array Approach
In this paper, we propose a new modular rotatable array (MRA) to mitigate the beam-split effect in near-field multi-user communications, by replacing a large number of true-time-delay (TTD) circuits with a small number of mechanically controlled rotating mechanisms to reduce the associated hardware cost and power consu...