Physically Consistent RIS: From Reradiation Mode Optimization to Practical Realization
<|reference_start|>Physically Consistent RIS: From Reradiation Mode Optimization to Practical Realization: We propose a practical framework for designing a physically consistent reconfigurable intelligent surface (RIS) to overcome the inefficiency of the conventional phase gradient approach. For a section of Cape Town and across three different coverage enhancement scenarios, we optimize the amplitude of the RIS reradiation modes using Sionna ray tracing and a gradient-based learning technique. We then determine the required RIS surface/sheet impedance given the desired amplitudes for the reradiation modes, design the corresponding unitcells, and validate the performance through full-wave numerical simulations using CST Microwave Studio. We further validate our approach by fabricating a RIS using the parallel plate waveguide technique and conducting experimental measurements that align with our theoretical predictions.<|reference_end|>
@article{shabanpour2024physically,
    title={Physically Consistent RIS: From Reradiation Mode Optimization to
  Practical Realization},
    author={Javad Shabanpour, Constantin Simovski, and Giovanni Geraci},
    journal={arXiv preprint arXiv:2409.17738},
    year={2024},
    archivePrefix={arXiv},
    eprint={2409.17738},
    primaryClass={physics.app-ph cs.IT cs.NI eess.SP math.IT}
}