Control of Time-Reversal Aperture by High-Precision Phase-Modulated and Dual-Polarized Metasurface

In this communication, we propose a novel design concept for the generation of special beams based on time-reversal aperture (TRA) theory. First, different forms of TRAs are investigated to overcome the shortcomings of traditional TRA in special beam generation. Next, a wideband (26.11% for TE and 19.5% for TM, respectively) dual-polarization phase-modulation metasurface (MS) is designed. Subsequently, the designed MS illuminated by TE plane wave will generate sloping Bessel Beam, meanwhile, the accelerating beam will be generated by TM plane wave incident. Compared to the classical methods, the proposed MS not only achieves a dual-polarization independent phase shift range of more than 400° without dimensional changes but also maintains a high transmittance with transmission loss lower than 0.3 dB. Finally, to verify the concept, the MS is manufactured and tested. The measured results show good agreement with the theoretic demonstrations and full-wave simulations.