This paper presents a macroscopic bilateral modeling approach for Reconfigurable Intelligent Surfaces (RIS) capable of simulating various cases, including transmissive and bilaterally reradiating RIS. Building on recent work, the approach is based on a general power balance at the RIS surface according to a few parameters, that accounts for both desired and parasitic reradiation modes on both sides of the surface as well as diffuse scattering and dissipation. The surface effect is described using a spatial modulation coefficient that embodies the wavefront transformation of each reradiation mode, including phase and amplitude modulation. Here the model is proposed and combined with a Huygens-based field calculation method to test its effectiveness in a few applications cases found in the literature.
Kodra S., Vitucci E.M., Barbiroli M., Albani M., Degli-Esposti V. (2024). A macroscopic bilateral modeling approach for reflective and transmissive metasurfaces. Institute of Electrical and Electronics Engineers Inc. [10.23919/EuCAP60739.2024.10500949].
A macroscopic bilateral modeling approach for reflective and transmissive metasurfaces
Kodra S.;Vitucci E. M.;Barbiroli M.;Degli-Esposti V.
2024
Abstract
This paper presents a macroscopic bilateral modeling approach for Reconfigurable Intelligent Surfaces (RIS) capable of simulating various cases, including transmissive and bilaterally reradiating RIS. Building on recent work, the approach is based on a general power balance at the RIS surface according to a few parameters, that accounts for both desired and parasitic reradiation modes on both sides of the surface as well as diffuse scattering and dissipation. The surface effect is described using a spatial modulation coefficient that embodies the wavefront transformation of each reradiation mode, including phase and amplitude modulation. Here the model is proposed and combined with a Huygens-based field calculation method to test its effectiveness in a few applications cases found in the literature.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.