Topology Optimization for Microwave Control With Reconfigurable Intelligent Metasurfaces In Complex Media
6 November 2023
Theodosios D. Karamanos,
Proposes topology optimization to design reconfigurable metasurfaces for wave focusing
Models metasurface elements as point sources with binary phase shifts
Maximizes intensity at focus point by optimizing binary phase configuration
Applies method to focus waves in open space, leaky cavity, and cavity antenna
Infinite metasurface element interactions improve focusing over simpler models
Efficient optimization enabled by analytical or numerical 2D Green's functions
Reconfigurable metasurfaces for wave focusing
This paper proposes using topology optimization to design reconfigurable metasurfaces that can focus waves in complex environments. The metasurface elements are modelled as point sources with tunable 0 or π phase shifts. The optimization maximizes intensity at a focus point by finding the optimal binary phase configuration. This method is applied to focus waves in open space, a leaky cavity, and a cavity antenna. Considering infinite interactions between metasurface elements significantly improves focusing over simpler models. Analytical or numerical calculation of 2D Green's functions enables efficient optimization.
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