Work

Cell-Based Domain Decomposition for Metasurface Antennas Design

Year: 2026

Type: article

Abstract: Metasurface design methods typically follow a two-stage approach based on the (surface) Impedance Boundary Condition (IBC) approximation of the macroscopic behaviour of the metasurface. In the first step, the surface impedance profile is optimized to meet the specifications; then, unit-cells are designed to reproduce the impedance profile. Usually, the metasurface geometry is considered continuous and the (equivalent) current can flow everywhere on the surface. In this contribution, we investigate on the impact of the discretization of the optimization domain, and its decomposition to conform to the actual size of the unit-cells. In particular, we consider a deterministic current-only optimization method. It is shown that information on the unit-cell size can guarantee better agreement between the IBC optimization results and the actual realization with physical unit-cells. Also, optimization convergence is notably faster.

Source: IEEE Open Journal of Antennas and Propagation

DOI: 10.1109/ojap.2026.3652094

Authors: Leonardo Pollini, Marcello Zucchi, Giuseppe Vecchi

Institutions: Politecnico di Torino, LINKS Foundation

Language: English

Topic: Advanced Antenna and Metasurface Technologies

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,075

Funders: Horizon 2020 Framework Programme, H2020 Marie Skłodowska-Curie Actions