On the Path-Loss of Reconfigurable Intelligent Surfaces: On the Path-Loss of Reconfigurable Intelligent Surfaces: An Approach Based on Green’s Theorem Applied to Vector Fields
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
IEEE Transactions on Communications
AbstractIn this paper, we introduce a physics-consistent analytical characterization of the free-space path-loss of a wireless link in the presence of a reconfigurable intelligent surface. The proposed approach is based on the vector generalization of Green's theorem. The obtained path-loss model can be applied to two-dimensional homogenized metasurfaces, which are made of sub-wavelength scattering elements and that operate either in reflection or transmission mode. The path-loss is formulated in terms of a computable integral that depends on the transmission distances, the polarization of the radio waves, the size of the surface, and the desired surface transformations. Closed-form expressions are obtained in two asymptotic regimes that are representative of far-field and near-field deployments. Based on the proposed approach, the impact of several design parameters and operating regimes is unveiled.
| openaire: EC/H2020/871464/EU//ARIADNE
Electromagnetic scattering, Green’s theorems, Optical surface waves, path-loss, Receivers, reconfigurable intelligent surfaces, Size measurement, Smart radio environments, Surface impedance, Surface waves, Wireless communication
Danufane , F H , Di Renzo , M , De Rosny , J & Tretyakov , S 2021 , ' On the Path-Loss of Reconfigurable Intelligent Surfaces: On the Path-Loss of Reconfigurable Intelligent Surfaces: An Approach Based on Green’s Theorem Applied to Vector Fields ' , IEEE Transactions on Communications , vol. 69 , no. 8 , 9433568 , pp. 5573-5592 . https://doi.org/10.1109/TCOMM.2021.3081452