Multiple Scattering Model for Beam Synthesis with Reconfigurable Intelligent Surfaces
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2023-06-01
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Language
en
Pages
11
4990-5000
4990-5000
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IEEE Transactions on Antennas and Propagation, Volume 71, issue 6
Abstract
This article presents a method of synthetic beamforming for reconfigurable intelligent surfaces (RIS). The method uses a T-matrix based multiple scattering model to compute the scattering from the RIS. We assume that the elements of the RIS are infinite circular cylinders. This allows us to make the model two-dimensional. Furthermore, we assume that the RIS elements satisfy the impedance boundary condition (IBC), the complex parameter of which adjusts the phase shift of the scattered field. We synthesize the beam both analytically and numerically. Both approaches rely on an approximation that assumes RIS elements that are small compared to the wavelength. We demonstrate the efficacy of the beam synthesis by applying it in a test case that features a linear array of RIS elements.Description
Keywords
beam steering, reconfigurable intelligent surfaces, boundary conditions, surface impedance
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Citation
Rimpiläinen, T & Jäntti, R 2023, ' Multiple Scattering Model for Beam Synthesis with Reconfigurable Intelligent Surfaces ', IEEE Transactions on Antennas and Propagation, vol. 71, no. 6, pp. 4990-5000 . https://doi.org/10.1109/TAP.2023.3262638