In this work, the design of tensor surface impedances is addressed by adapting a current-based technique for the synthesis of metasurface antennas. An objective function that incorporates both far field and realizability constraints associated with a tensor impedance is minimized using a non-linear conjugate gradient algorithm in order to determine the optimal surface current. From it, the corresponding surface impedance is retrieved and implemented through a suitable selection of anisotropic unit cells. The design of a circular metasurface antenna radiating a squinted beam with linear polarization is demonstrated.
Current-based design of tensor metasurfaces / Teodorani, Lucia; Zucchi, Marcello; Lattanzio, Francesco; Vecchi, Giuseppe. - ELETTRONICO. - (2025). (Intervento presentato al convegno 2025 IEEE International Symposium on Antennas & Propagation and North American Radio Science Meeting tenutosi a Ottawa (Can) nel 13 - 18 July 2025).
Current-based design of tensor metasurfaces
Teodorani, Lucia;Zucchi, Marcello;Lattanzio, Francesco;Vecchi, Giuseppe
2025
Abstract
In this work, the design of tensor surface impedances is addressed by adapting a current-based technique for the synthesis of metasurface antennas. An objective function that incorporates both far field and realizability constraints associated with a tensor impedance is minimized using a non-linear conjugate gradient algorithm in order to determine the optimal surface current. From it, the corresponding surface impedance is retrieved and implemented through a suitable selection of anisotropic unit cells. The design of a circular metasurface antenna radiating a squinted beam with linear polarization is demonstrated.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/3003459