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physics.optics2026
Non-Diffracting Beams for Near-Field Millimeter-Wave Communications: Advantage Regimes Under Aperture and Blockage Constraints
Yifeng Qin, Jing Chen, Zhi Hao Jiang +2
Near-field blockage changes the beam-design objective in millimeter-wave links: maximizing the unblocked on-axis gain does not necessarily maximize blocked-link performance. This p…
physics.optics2026
Pearcey-Inspired Quartic Wavefront Shaping for Obstructed Near-Field Multi-User Communications
Yifeng Qin, Jing Chen, Zhi Hao Jiang
Radiative near-field (RNF) beamforming is vulnerable to blockages that disrupt Fresnel zones. This letter proposes an obstruction-unaware wavefront shaping strategy inspired by cat…