Physically Consistent RIS: From Reradiation Mode Optimization to Practical Realization
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866917788640083968 |
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| author | Shabanpour, Javad Simovski, Constantin Geraci, Giovanni |
| author_facet | Shabanpour, Javad Simovski, Constantin Geraci, Giovanni |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_17738 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Physically Consistent RIS: From Reradiation Mode Optimization to Practical Realization Shabanpour, Javad Simovski, Constantin Geraci, Giovanni Applied Physics Information Theory Networking and Internet Architecture Signal Processing 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. |
| title | Physically Consistent RIS: From Reradiation Mode Optimization to Practical Realization |
| topic | Applied Physics Information Theory Networking and Internet Architecture Signal Processing |
| url | https://arxiv.org/abs/2409.17738 |