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physics.optics2025
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.optics2013
Acoustic Wavefront Manipulation: Impedance Inhomogeneity and Extraordinary Reflection
Jiajun Zhao, Cheng-Wei Qiu, Zhining Chen +1
Optical wavefront can be manipulated by interfering elementary beams with phase inhomogeneity. Therefore a surface allowing huge, abrupt and position-variant phase change would ena…